# OOI Cassandra Data Loss Incident -- April 15 to May 19, 2026

**URL:** <https://discourse.oceanobservatories.org/t/ooi-cassandra-data-loss-incident-april-15-to-may-19-2026/1011>\
**Category:** Known Issues\
**Tags:** cgsn, ea, rca, data-explorer, data\
**Created:** [June 10, 2026, 9:07pm UTC](https://discourse.oceanobservatories.org/t/ooi-cassandra-data-loss-incident-april-15-to-may-19-2026/1011 "2026-06-10T21:07:45Z")\
**Posts on this page:** 7\
**Page:** 1

<div class="post-metadata">

**Author:** ![chris.wingard](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.oceanobservatories.org/chris.wingard/32/26_2.png) [@chris.wingard](https://discourse.oceanobservatories.org/u/chris.wingard)\
**Post date:** [June 10, 2026, 9:07pm UTC](https://discourse.oceanobservatories.org/t/ooi-cassandra-data-loss-incident-april-15-to-may-19-2026/1011/1 "2026-06-10T21:07:45Z")

</div>

On April 15, 2026, following routine maintenance on the Apache Cassandra database cluster, the system entered an unstable state known as an asymmetric network partition. While this did not cause a full outage, it resulted in intermittent read failures and, beginning April 21, intermittent failures to persist incoming data to Cassandra. The root cause was a split-brain condition in which cluster nodes held conflicting views of cluster health – each node believed itself healthy while marking others as offline. These mismatched perspectives prevented the cluster from reliably reaching quorum, causing inconsistent slowdowns and errors for users making data requests.

The issue was resolved on May 19, 2026 by sequentially restarting affected nodes, allowing each to fully synchronize with the cluster before proceeding to the next.

Analysis of EDEX ingest logs confirmed that write failures occurred in discrete time windows across seven affected days: April 21, May 7, and May 15 through May 19. Failures were not uniformly distributed across instruments – on the worst-affected day (May 19), 75 of 110 instruments had at least one stream with data loss, while May 7 saw only 3 affected instruments. Log analysis produced per-day, per-stream breakdowns identifying the specific time ranges and record counts for successful writes, failed writes, and streams with no failures, enabling targeted deletions and re-loads of the data at the instrument/method/stream level.

OOI personnel are reloading data into the impacted streams. We will update this ticket with information on the impacted streams and their reload status as they are addressed. Users who downloaded OOI data between April 15 and May 19, 2026 are encouraged to monitor this ticket and re-download the data from any impacted streams they may have downloaded once those streams have been reloaded to ensure they have the complete data record.

@mvardaro – Regional Cabled Array  
@chris.wingard – Coastal Endurance Array  
@cdobson – Global Irminger and Coastal Pioneer Arrays

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<div class="post-metadata">

**Author:** ![chris.wingard](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.oceanobservatories.org/chris.wingard/32/26_2.png) [@chris.wingard](https://discourse.oceanobservatories.org/u/chris.wingard)\
**Post date:** [June 10, 2026, 9:28pm UTC](https://discourse.oceanobservatories.org/t/ooi-cassandra-data-loss-incident-april-15-to-may-19-2026/1011/2 "2026-06-10T21:28:08Z")

</div>

**Coastal Endurance Array – Reloaded Streams**

All impacted Coastal Endurance Array sensors (currently deployed assets only were impacted) have been deleted and reloaded in the Cassandra database. The affected sensors are listed below. Note, for uncabled assets, the deletion and reload process impacts all streams.

| Site | Node | Sensor | Start | End |
| --- | --- | --- | --- | --- |
| CE02SHSM | SBD11 | 02-HYDGN0000 | 2026-04-21 | 2026-04-21 |
| CE02SHSM | SBD11 | 06-METBKA000 | 2026-04-21 | 2026-04-21 |
| CE02SHSM | SBD11 | 06-METBKA001 | 2026-04-21 | 2026-04-21 |
| CE02SHSM | SBD11 | 06-METBKA000 | 2026-05-07 | 2026-05-07 |
| CE02SHSM | SBD11 | 01-MOPAK0000 | 2026-05-15 | 2026-05-19 |
| CE02SHSM | SBD11 | 02-HYDGN0000 | 2026-05-15 | 2026-05-19 |
| CE02SHSM | SBD11 | 06-METBKA000 | 2026-05-15 | 2026-05-19 |
| CE02SHSM | SBD11 | 06-METBKA001 | 2026-05-15 | 2026-05-19 |
| CE02SHSM | SBD12 | 03-HYDGN0000 | 2026-05-15 | 2026-05-19 |
| CE02SHSM | SBD12 | 04-PCO2AA000 | 2026-05-15 | 2026-05-19 |
| CE02SHSM | SBD12 | 05-WAVSSA000 | 2026-05-15 | 2026-05-19 |
| CE05MOAS | G1153 | 00-ENG000000 | 2026-05-15 | 2026-05-19 |
| CE05MOAS | G1153 | 01-PARADM000 | 2026-05-15 | 2026-05-19 |
| CE05MOAS | G1153 | 02-FLORTM000 | 2026-05-15 | 2026-05-19 |
| CE05MOAS | G1153 | 05-CTDGVM000 | 2026-05-15 | 2026-05-19 |

An internal ticket has been created to reload the data into the Gold Copy THREDDS catalog. I’ll update this ticket once that process is complete for Endurance Array assets.

Chris Wingard

---

<div class="post-metadata">

**Author:** ![cdobson](https://avatars.discourse-cdn.com/v4/letter/c/da6949/32.png) [@cdobson](https://discourse.oceanobservatories.org/u/cdobson)\
**Post date:** [June 11, 2026, 6:50pm UTC](https://discourse.oceanobservatories.org/t/ooi-cassandra-data-loss-incident-april-15-to-may-19-2026/1011/3 "2026-06-11T18:50:08Z")

</div>

All impacted Coastal Pioneer and Global Irminger sensors have been deleted and reloaded in the Cassandra database. The affected sensors are listed in the table below.

| Site | Node | Sensor | Start | End |
| --- | --- | --- | --- | --- |
| CP10CNSM | RID26 | 00-DCLENG000 | 2026-04-21 | 2026-04-21 |
| CP10CNSM | RID26 | 03-TURBDA000 | 2026-04-21 | 2026-04-21 |
| CP10CNSM | RID26 | 04-VELPTA000 | 2026-04-21 | 2026-04-21 |
| CP10CNSM | SBD11 | 02-HYDGN0000 | 2026-04-21 | 2026-04-21 |
| CP10CNSM | SBD11 | 06-METBKA000 | 2026-04-21 | 2026-04-21 |
| CP10CNSM | SBD11 | 06-METBKA001 | 2026-04-21 | 2026-04-21 |
| CP10CNSM | SBD12 | 06-METBKA001 | 2026-04-21 | 2026-04-21 |
| CP11NOSM | MFD36 | 05-PCO2WB000 | 2026-04-21 | 2026-04-21 |
| CP11NOSM | MFD37 | 04-DOSTAD000 | 2026-04-21 | 2026-04-21 |
| CP11NOSM | RID26 | 04-VELPTA000 | 2026-04-21 | 2026-04-21 |
| CP11NOSM | RID27 | 02-FLORTD000 | 2026-04-21 | 2026-04-21 |
| CP11NOSM | RID27 | 03-CTDBPC000 | 2026-04-21 | 2026-04-21 |
| CP11NOSM | SBD11 | 00-DCLENG000 | 2026-04-21 | 2026-04-21 |
| CP11NOSM | SBD11 | 06-METBKA001 | 2026-04-21 | 2026-04-21 |
| CP11NOSM | SBD12 | 00-DCLENG000 | 2026-04-21 | 2026-04-21 |
| CP11NOSM | SBD12 | 03-HYDGN0000 | 2026-04-21 | 2026-04-21 |
| CP11NOSM | SBD12 | 05-WAVSSA000 | 2026-04-21 | 2026-04-21 |
| CP11NOSM | RID26 | 00-DCLENG000 | 2026-05-07 | 2026-05-07 |
| CP11NOSM | MFD36 | 00-DCLENG000 | 2026-05-15 | 2026-05-19 |
| CP11NOSM | MFD36 | 03-TURBDA000 | 2026-05-15 | 2026-05-19 |
| CP11NOSM | MFD36 | 05-PCO2WB000 | 2026-05-15 | 2026-05-19 |
| CP11NOSM | MFD37 | 00-DCLENG000 | 2026-05-15 | 2026-05-19 |
| CP11NOSM | MFD37 | 02-ADCPTF000 | 2026-05-15 | 2026-05-19 |
| CP11NOSM | MFD37 | 04-DOSTAD000 | 2026-05-15 | 2026-05-19 |
| CP11NOSM | RID26 | 00-DCLENG000 | 2026-05-15 | 2026-05-19 |
| CP11NOSM | RID26 | 01-PRTSZA000 | 2026-05-15 | 2026-05-19 |
| CP11NOSM | RID26 | 03-TURBDA000 | 2026-05-15 | 2026-05-19 |
| CP11NOSM | RID26 | 04-VELPTA000 | 2026-05-15 | 2026-05-19 |
| CP11NOSM | RID26 | 07-NUTNRB000 | 2026-05-15 | 2026-05-19 |
| CP11NOSM | RID26 | 08-SPKIRB000 | 2026-05-15 | 2026-05-19 |
| CP11NOSM | RID27 | 00-DCLENG000 | 2026-05-15 | 2026-05-19 |
| CP11NOSM | RID27 | 01-OPTAAD000 | 2026-05-15 | 2026-05-19 |
| CP11NOSM | RID27 | 02-FLORTD000 | 2026-05-15 | 2026-05-19 |
| CP11NOSM | RID27 | 03-CTDBPC000 | 2026-05-15 | 2026-05-19 |
| CP11NOSM | RID27 | 04-DOSTAD000 | 2026-05-15 | 2026-05-19 |
| CP11NOSM | SBD11 | 00-DCLENG000 | 2026-05-15 | 2026-05-19 |
| CP11NOSM | SBD11 | 05-SPKIRB000 | 2026-05-15 | 2026-05-19 |
| CP11NOSM | SBD11 | 06-METBKA000 | 2026-05-15 | 2026-05-19 |
| CP11NOSM | SBD11 | 06-METBKA001 | 2026-05-15 | 2026-05-19 |
| CP11NOSM | SBD12 | 00-DCLENG000 | 2026-05-15 | 2026-05-19 |
| CP11NOSM | SBD12 | 03-HYDGN0000 | 2026-05-15 | 2026-05-19 |
| CP11NOSM | SBD12 | 05-WAVSSA000 | 2026-05-15 | 2026-05-19 |
| CP11SOSM | MFD37 | 04-DOSTAD000 | 2026-04-21 | 2026-04-21 |
| CP11SOSM | RID26 | 07-NUTNRB000 | 2026-04-21 | 2026-04-21 |
| CP11SOSM | RID27 | 01-OPTAAD000 | 2026-04-21 | 2026-04-21 |
| CP11SOSM | RID27 | 03-CTDBPC000 | 2026-04-21 | 2026-04-21 |
| CP11SOSM | SBD11 | 06-METBKA000 | 2026-04-21 | 2026-04-21 |
| CP11SOSM | SBD11 | 06-METBKA001 | 2026-04-21 | 2026-04-21 |
| CP11SOSM | SBD12 | 03-HYDGN0000 | 2026-04-21 | 2026-04-21 |
| CP11SOSM | MFD36 | 00-DCLENG000 | 2026-05-07 | 2026-05-07 |
| CP11SOSM | MFD36 | 00-DCLENG000 | 2026-05-15 | 2026-05-19 |
| CP11SOSM | MFD36 | 01-PRTSZA000 | 2026-05-15 | 2026-05-19 |
| CP11SOSM | MFD36 | 03-TURBDA000 | 2026-05-15 | 2026-05-19 |
| CP11SOSM | MFD36 | 05-PCO2WB000 | 2026-05-15 | 2026-05-19 |
| CP11SOSM | MFD37 | 00-DCLENG000 | 2026-05-15 | 2026-05-19 |
| CP11SOSM | MFD37 | 03-CTDBPD000 | 2026-05-15 | 2026-05-19 |
| CP11SOSM | MFD37 | 04-DOSTAD000 | 2026-05-15 | 2026-05-19 |
| CP11SOSM | RID26 | 00-DCLENG000 | 2026-05-15 | 2026-05-19 |
| CP11SOSM | RID26 | 03-TURBDA000 | 2026-05-15 | 2026-05-19 |
| CP11SOSM | RID26 | 07-NUTNRB000 | 2026-05-15 | 2026-05-19 |
| CP11SOSM | RID26 | 08-SPKIRB000 | 2026-05-15 | 2026-05-19 |
| CP11SOSM | RID27 | 00-DCLENG000 | 2026-05-15 | 2026-05-19 |
| CP11SOSM | RID27 | 01-OPTAAD000 | 2026-05-15 | 2026-05-19 |
| CP11SOSM | RID27 | 02-FLORTD000 | 2026-05-15 | 2026-05-19 |
| CP11SOSM | RID27 | 03-CTDBPC000 | 2026-05-15 | 2026-05-19 |
| CP11SOSM | SBD11 | 00-DCLENG000 | 2026-05-15 | 2026-05-19 |
| CP11SOSM | SBD11 | 02-HYDGN0000 | 2026-05-15 | 2026-05-19 |
| CP11SOSM | SBD11 | 05-SPKIRB000 | 2026-05-15 | 2026-05-19 |
| CP11SOSM | SBD11 | 06-METBKA000 | 2026-05-15 | 2026-05-19 |
| CP11SOSM | SBD11 | 06-METBKA001 | 2026-05-15 | 2026-05-19 |
| CP11SOSM | SBD12 | 00-DCLENG000 | 2026-05-15 | 2026-05-19 |
| CP11SOSM | SBD12 | 03-HYDGN0000 | 2026-05-15 | 2026-05-19 |
| CP11SOSM | SBD12 | 05-WAVSSA000 | 2026-05-15 | 2026-05-19 |
| CP12CNSW | MFI01 | 02-CTDMOS031 | 2026-04-21 | 2026-04-21 |
| CP13SOPM | WFP01 | 00-WFPENG001 | 2026-04-21 | 2026-04-21 |
| CP13SOPM | WFP01 | 01-VEL3DK000 | 2026-04-21 | 2026-04-21 |
| CP13SOPM | WFP01 | 02-DOFSTK000 | 2026-04-21 | 2026-04-21 |
| CP13SOPM | WFP01 | 03-CTDPFK000 | 2026-04-21 | 2026-04-21 |
| GI01SUMO | RID16 | 08-SPKIRB000 | 2026-04-21 | 2026-04-21 |
| GI01SUMO | RII11 | 02-CTDBPP033 | 2026-04-21 | 2026-04-21 |
| GI01SUMO | RII11 | 02-CTDMOQ011 | 2026-04-21 | 2026-04-21 |
| GI01SUMO | RII11 | 02-FLORDG033 | 2026-04-21 | 2026-04-21 |
| GI01SUMO | SBD11 | 04-DOSTAD000 | 2026-04-21 | 2026-04-21 |
| GI01SUMO | SBD11 | 06-METBKA001 | 2026-04-21 | 2026-04-21 |
| GI01SUMO | RID16 | 00-DCLENG000 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | RID16 | 01-OPTAAD000 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | RID16 | 02-FLORTD000 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | RID16 | 03-CTDBPF000 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | RID16 | 06-DOSTAD000 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | RID16 | 07-NUTNRB000 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | RID16 | 08-SPKIRB000 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | RII11 | 02-ADCPSN010 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | RII11 | 02-CTDBPP031 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | RII11 | 02-CTDBPP032 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | RII11 | 02-CTDBPP033 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | RII11 | 02-CTDMOQ011 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | RII11 | 02-CTDMOQ012 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | RII11 | 02-CTDMOQ013 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | RII11 | 02-CTDMOQ014 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | RII11 | 02-CTDMOQ015 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | RII11 | 02-CTDMOQ016 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | RII11 | 02-CTDMOQ017 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | RII11 | 02-CTDMOR018 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | RII11 | 02-CTDMOR019 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | RII11 | 02-CTDMOR020 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | RII11 | 02-FLORDG031 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | RII11 | 02-FLORDG033 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | RII11 | 02-PCO2WC052 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | RII11 | 02-PCO2WC053 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | SBD11 | 00-DCLENG000 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | SBD11 | 03-HYDGN0000 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | SBD11 | 04-DOSTAD000 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | SBD11 | 05-SPKIRB000 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | SBD11 | 06-METBKA001 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | SBD11 | 08-NUTNRB000 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | SBD12 | 00-DCLENG000 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | SBD12 | 01-OPTAAD000 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | SBD12 | 02-FLORTD000 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | SBD12 | 03-HYDGN0000 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | SBD12 | 04-PCO2AA000 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | SBD12 | 06-METBKA000 | 2026-05-15 | 2026-05-19 |
| GI01SUMO | SBD12 | 06-METBKA001 | 2026-05-15 | 2026-05-19 |

---

<div class="post-metadata">

**Author:** ![mvardaro](https://avatars.discourse-cdn.com/v4/letter/m/8dc957/32.png) [@mvardaro](https://discourse.oceanobservatories.org/u/mvardaro)\
**Post date:** [June 12, 2026, 8:02pm UTC](https://discourse.oceanobservatories.org/t/ooi-cassandra-data-loss-incident-april-15-to-may-19-2026/1011/4 "2026-06-12T20:02:42Z")

</div>

Deletion and playback of impacted Regional Cabled Array instruments is underway. The incident affected 270 instruments (106 science sensors and 164 engineering sensors) across three time ranges. Due to the density of the streaming datasets, playback will take some time to complete individually without impacting system stability.

So far, the following 10 sensors have been fully purged and reloaded:

| **Reference Designator** | | **Start** | **End** |
| --- | --- | --- | --- |
| CE02SHBP-LJ01D-05-ADCPTB104 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| CE02SHBP-LJ01D-05-ADCPTB104 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| CE02SHBP-LJ01D-05-ADCPTB104 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| CE02SHBP-LJ01D-07-VEL3DC108 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| CE02SHBP-LJ01D-07-VEL3DC108 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| CE02SHBP-LJ01D-07-VEL3DC108 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| CE02SHBP-LJ01D-10-PHSENH110 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| CE02SHBP-LJ01D-10-PHSENH110 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| CE02SHBP-LJ01D-10-PHSENH110 | 0 | 2026-05-16 0:00:00 | 2026-05-20 0:00:00 |
| CE04OSBP-LJ01C-05-ADCPSI103 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| CE04OSBP-LJ01C-05-ADCPSI103 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| CE04OSBP-LJ01C-05-ADCPSI103 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| CE04OSBP-LJ01C-06-CTDBPO108 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| CE04OSBP-LJ01C-06-CTDBPO108 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| CE04OSBP-LJ01C-06-CTDBPO108 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| CE04OSBP-LJ01C-06-DOSTAD108 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| CE04OSBP-LJ01C-06-DOSTAD108 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| CE04OSBP-LJ01C-07-VEL3DC107 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| CE04OSBP-LJ01C-07-VEL3DC107 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| CE04OSBP-LJ01C-08-OPTAAC104 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| CE04OSBP-LJ01C-08-OPTAAC104 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| CE04OSBP-LJ01C-09-PCO2WB104 | 0 | 2026-05-16 0:00:00 | 2026-05-20 0:00:00 |
| CE04OSBP-LJ01C-10-PHSEND107 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |

---

<div class="post-metadata">

**Author:** ![mvardaro](https://avatars.discourse-cdn.com/v4/letter/m/8dc957/32.png) [@mvardaro](https://discourse.oceanobservatories.org/u/mvardaro)\
**Post date:** [June 26, 2026, 8:40pm UTC](https://discourse.oceanobservatories.org/t/ooi-cassandra-data-loss-incident-april-15-to-may-19-2026/1011/5 "2026-06-26T20:40:38Z")

</div>

Playback to fill in the data gaps of the impacted Regional Cabled Array science instruments continues (45/106 complete). The following sensor time ranges have now been reloaded into the system:

| **Reference Designator** | **Deployment** | **time\_utc** | **end\_time\_utc** |
| --- | --- | --- | --- |
| CE04OSPS-PC01B-4A-CTDPFA109 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| CE04OSPS-PC01B-4A-CTDPFA109 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| CE04OSPS-PC01B-4A-CTDPFA109 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| CE04OSPS-PC01B-4A-DOSTAD109 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| CE04OSPS-PC01B-4A-DOSTAD109 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| CE04OSPS-PC01B-4A-DOSTAD109 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| CE04OSPS-PC01B-4C-PHSENH109 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| CE04OSPS-PC01B-4C-PHSENH109 | 0 | 2026-05-16 0:00:00 | 2026-05-20 0:00:00 |
| CE04OSPS-PC01B-4D-PCO2WA105 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| CE04OSPS-PC01B-4D-PCO2WA105 | 0 | 2026-05-16 0:00:00 | 2026-05-20 0:00:00 |
| CE04OSPS-SF01B-2A-CTDPFA107 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| CE04OSPS-SF01B-2A-CTDPFA107 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| CE04OSPS-SF01B-2A-DOFSTA107 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| CE04OSPS-SF01B-2A-DOFSTA107 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| CE04OSPS-SF01B-2A-DOFSTA107 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| CE04OSPS-SF01B-2B-PHSENA108 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| CE04OSPS-SF01B-2B-PHSENA108 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| CE04OSPS-SF01B-3A-FLORTD104 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| CE04OSPS-SF01B-3A-FLORTD104 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| CE04OSPS-SF01B-3A-FLORTD104 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| CE04OSPS-SF01B-3B-OPTAAD105 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| CE04OSPS-SF01B-3B-OPTAAD105 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| CE04OSPS-SF01B-3C-PARADA102 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| CE04OSPS-SF01B-3C-PARADA102 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| CE04OSPS-SF01B-3C-PARADA102 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| CE04OSPS-SF01B-3D-SPKIRA102 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| CE04OSPS-SF01B-3D-SPKIRA102 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| CE04OSPS-SF01B-4A-NUTNRA102 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| CE04OSPS-SF01B-4A-NUTNRA102 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| CE04OSPS-SF01B-4A-NUTNRA102 | 0 | 2026-05-16 0:00:00 | 2026-05-20 0:00:00 |
| CE04OSPS-SF01B-4B-VELPTD106 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| CE04OSPS-SF01B-4B-VELPTD106 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| CE04OSPS-SF01B-4B-VELPTD106 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| CE04OSPS-SF01B-4F-PCO2WA102 | 0 | 2026-05-16 0:00:00 | 2026-05-20 0:00:00 |
| RS01SBPS-PC01A-05-ADCPTD102 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS01SBPS-PC01A-05-ADCPTD102 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS01SBPS-PC01A-05-ADCPTD102 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS01SBPS-PC01A-06-VADCPB101 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS01SBPS-PC01A-06-VADCPB101 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS01SBPS-PC01A-06-VADCPB101 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS01SBPS-PC01A-4A-CTDPFA103 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS01SBPS-PC01A-4A-CTDPFA103 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS01SBPS-PC01A-4A-DOSTAD103 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS01SBPS-PC01A-4A-DOSTAD103 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS01SBPS-PC01A-4A-DOSTAD103 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS01SBPS-PC01A-4B-PHSENA102 | 0 | 2026-05-16 0:00:00 | 2026-05-20 0:00:00 |
| RS01SBPS-PC01A-4C-FLORDD103 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS01SBPS-PC01A-4C-FLORDD103 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS01SBPS-PC01A-4C-FLORDD103 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS01SBPS-SF01A-2A-CTDPFA102 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS01SBPS-SF01A-2A-CTDPFA102 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS01SBPS-SF01A-2A-CTDPFA102 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS01SBPS-SF01A-2A-DOFSTA102 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS01SBPS-SF01A-2A-DOFSTA102 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS01SBPS-SF01A-2A-DOFSTA102 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS01SBPS-SF01A-3A-FLORTD101 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS01SBPS-SF01A-3A-FLORTD101 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS01SBPS-SF01A-3B-OPTAAD101 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS01SBPS-SF01A-3B-OPTAAD101 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS01SBPS-SF01A-3B-OPTAAD101 | 0 | 2026-05-16 0:00:00 | 2026-05-20 0:00:00 |
| RS01SBPS-SF01A-3C-PARADA101 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS01SBPS-SF01A-3C-PARADA101 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS01SBPS-SF01A-3C-PARADA101 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS01SBPS-SF01A-3D-SPKIRA101 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS01SBPS-SF01A-3D-SPKIRA101 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS01SBPS-SF01A-3D-SPKIRA101 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS01SBPS-SF01A-4A-NUTNRA101 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS01SBPS-SF01A-4A-NUTNRA101 | 0 | 2026-05-16 0:00:00 | 2026-05-20 0:00:00 |
| RS01SBPS-SF01A-4B-VELPTD102 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS01SBPS-SF01A-4B-VELPTD102 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS01SBPS-SF01A-4B-VELPTD102 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS01SBPS-SF01A-4F-PCO2WA101 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS01SBPS-SF01A-4F-PCO2WA101 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS01SLBS-LJ01A-05-HPIESA101 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS01SLBS-LJ01A-05-HPIESA101 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS01SLBS-LJ01A-05-HPIESA101 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS01SLBS-LJ01A-11-OPTAAC103 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS01SLBS-LJ01A-11-OPTAAC103 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS01SLBS-LJ01A-12-CTDPFB101 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS01SLBS-LJ01A-12-CTDPFB101 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS01SLBS-LJ01A-12-DOSTAD101 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS01SLBS-LJ01A-12-DOSTAD101 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS01SLBS-LJ01A-12-DOSTAD101 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS01SLBS-MJ01A-06-PRESTA101 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS01SLBS-MJ01A-06-PRESTA101 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS01SLBS-MJ01A-12-VEL3DB101 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS01SLBS-MJ01A-12-VEL3DB101 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS01SLBS-MJ01A-12-VEL3DB101 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |

---

<div class="post-metadata">

**Author:** ![mvardaro](https://avatars.discourse-cdn.com/v4/letter/m/8dc957/32.png) [@mvardaro](https://discourse.oceanobservatories.org/u/mvardaro)\
**Post date:** [July 3, 2026, 1:29am UTC](https://discourse.oceanobservatories.org/t/ooi-cassandra-data-loss-incident-april-15-to-may-19-2026/1011/6 "2026-07-03T01:29:43Z")

</div>

Playback to fill in the data gaps of the impacted Regional Cabled Array science instruments continues (72/106 complete). The following sensor time ranges have now been reloaded into the system:

| **RefDes** | **Deployment** | **time\_utc** | **end\_time\_utc** |
| --- | --- | --- | --- |
| RS01SUM1-LJ01B-09-PRESTB102 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS01SUM1-LJ01B-09-PRESTB102 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS01SUM1-LJ01B-09-PRESTB102 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS01SUM1-LJ01B-12-VEL3DB104 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS01SUM1-LJ01B-12-VEL3DB104 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS01SUM1-LJ01B-12-VEL3DB104 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS01SUM2-MJ01B-12-ADCPSK101 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS01SUM2-MJ01B-12-ADCPSK101 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS01SUM2-MJ01B-12-ADCPSK101 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03ASHS-MJ03B-07-TMPSFA301 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03ASHS-MJ03B-07-TMPSFA301 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS03ASHS-MJ03B-07-TMPSFA301 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03ASHS-MJ03B-10-CTDPFB304 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03ASHS-MJ03B-10-CTDPFB304 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS03ASHS-MJ03B-10-CTDPFB304 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03AXBS-LJ03A-10-ADCPTE303 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03AXBS-LJ03A-10-ADCPTE303 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS03AXBS-LJ03A-10-ADCPTE303 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03AXBS-LJ03A-11-OPTAAC303 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS03AXBS-LJ03A-11-OPTAAC303 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03AXBS-LJ03A-12-CTDPFB301 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03AXBS-LJ03A-12-CTDPFB301 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS03AXBS-LJ03A-12-CTDPFB301 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03AXBS-LJ03A-12-DOSTAD301 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03AXBS-LJ03A-12-DOSTAD301 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS03AXBS-LJ03A-12-DOSTAD301 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03AXBS-MJ03A-06-PRESTA301 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03AXBS-MJ03A-06-PRESTA301 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS03AXBS-MJ03A-06-PRESTA301 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03AXBS-MJ03A-12-VEL3DB301 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03AXBS-MJ03A-12-VEL3DB301 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS03AXBS-MJ03A-12-VEL3DB301 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03AXPS-PC03A-05-ADCPTD302 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03AXPS-PC03A-05-ADCPTD302 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS03AXPS-PC03A-05-ADCPTD302 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03AXPS-PC03A-06-VADCPB301 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03AXPS-PC03A-06-VADCPB301 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS03AXPS-PC03A-06-VADCPB301 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03AXPS-PC03A-4A-CTDPFA303 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03AXPS-PC03A-4A-CTDPFA303 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS03AXPS-PC03A-4A-CTDPFA303 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03AXPS-PC03A-4A-DOSTAD303 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03AXPS-PC03A-4A-DOSTAD303 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS03AXPS-PC03A-4A-DOSTAD303 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03AXPS-PC03A-4B-PHSENA302 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03AXPS-PC03A-4B-PHSENA302 | 0 | 2026-05-16 0:00:00 | 2026-05-20 0:00:00 |
| RS03AXPS-PC03A-4C-FLORDD303 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03AXPS-PC03A-4C-FLORDD303 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03AXPS-SF03A-2A-CTDPFA302 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03AXPS-SF03A-2A-CTDPFA302 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS03AXPS-SF03A-2A-CTDPFA302 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03AXPS-SF03A-2A-DOFSTA302 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03AXPS-SF03A-2A-DOFSTA302 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS03AXPS-SF03A-2A-DOFSTA302 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03AXPS-SF03A-2D-PHSENA301 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03AXPS-SF03A-3A-FLORTD301 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03AXPS-SF03A-3A-FLORTD301 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03AXPS-SF03A-3B-OPTAAD301 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03AXPS-SF03A-3B-OPTAAD301 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS03AXPS-SF03A-3B-OPTAAD301 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03AXPS-SF03A-3C-PARADA301 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03AXPS-SF03A-3C-PARADA301 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS03AXPS-SF03A-3C-PARADA301 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03AXPS-SF03A-3D-SPKIRA301 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03AXPS-SF03A-3D-SPKIRA301 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS03AXPS-SF03A-3D-SPKIRA301 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03AXPS-SF03A-4A-NUTNRA301 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS03AXPS-SF03A-4A-NUTNRA301 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03AXPS-SF03A-4B-VELPTD302 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03AXPS-SF03A-4B-VELPTD302 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS03AXPS-SF03A-4B-VELPTD302 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03AXPS-SF03A-4F-PCO2WA301 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |

---

<div class="post-metadata">

**Author:** ![mvardaro](https://avatars.discourse-cdn.com/v4/letter/m/8dc957/32.png) [@mvardaro](https://discourse.oceanobservatories.org/u/mvardaro)\
**Post date:** [July 7, 2026, 11:38pm UTC](https://discourse.oceanobservatories.org/t/ooi-cassandra-data-loss-incident-april-15-to-may-19-2026/1011/7 "2026-07-07T23:38:57Z")

</div>

Playback to fill in the data gaps of the impacted Regional Cabled Array science instruments is now complete. The only remaining gaps are in seismic sensor and hydrophone metadata that derive from the Antelope/ORB system (which have no playback method, but the OOI Raw Data Archive and the data sent directly to our IRIS/EarthScope partners are intact) and engineering metadata (which is mainly used for monitoring and has no effect on the science data). The following sensor time ranges have now been reloaded into the system:

| **RefDes** | **Deployment** | **time\_utc** | **end\_time\_utc** |
| --- | --- | --- | --- |
| RS03CCAL-MJ03F-12-CTDPFB305 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03CCAL-MJ03F-12-CTDPFB305 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS03CCAL-MJ03F-12-CTDPFB305 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03ECAL-MJ03E-12-CTDPFB306 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03ECAL-MJ03E-12-CTDPFB306 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS03ECAL-MJ03E-12-CTDPFB306 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03INT1-MJ03C-07-D1000A301 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03INT1-MJ03C-07-D1000A301 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS03INT1-MJ03C-07-D1000A301 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03INT1-MJ03C-09-TRHPHA302 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03INT1-MJ03C-09-TRHPHA302 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03INT1-MJ03C-10-TRHPHA301 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03INT1-MJ03C-10-TRHPHA301 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS03INT1-MJ03C-10-TRHPHA301 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03INT2-MJ03D-11-CTDPFB307 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03INT2-MJ03D-11-CTDPFB307 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS03INT2-MJ03D-11-CTDPFB307 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03INT2-MJ03D-12-VEL3DB304 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03INT2-MJ03D-12-VEL3DB304 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03ASHS-MJ03B-09-BOTPTA304 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03ASHS-MJ03B-09-BOTPTA304 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS03ASHS-MJ03B-09-BOTPTA304 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03CCAL-MJ03F-05-BOTPTA301 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03CCAL-MJ03F-05-BOTPTA301 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS03CCAL-MJ03F-05-BOTPTA301 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03ECAL-MJ03E-06-BOTPTA302 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03ECAL-MJ03E-06-BOTPTA302 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS03ECAL-MJ03E-06-BOTPTA302 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03INT2-MJ03D-06-BOTPTA303 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03INT2-MJ03D-06-BOTPTA303 | 0 | 2026-05-07 7:00:00 | 2026-05-07 12:00:00 |
| RS03INT2-MJ03D-06-BOTPTA303 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |

The following are the seismic and hydrophone sensors with metadata gaps in Cassandra:

| **RefDes** | **Deployment** | **time\_utc** | **end\_time\_utc** |
| --- | --- | --- | --- |
| CE02SHBP-LJ01D-11-HYDBBA106 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| CE02SHBP-LJ01D-11-HYDBBA106 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS01SBPS-PC01A-08-HYDBBA103 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS01SBPS-PC01A-08-HYDBBA103 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS01SLBS-LJ01A-09-HYDBBA102 | 0 | 2026-05-16 0:00:00 | 2026-05-20 0:00:00 |
| RS01SLBS-MJ01A-05-HYDLFA101 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS01SLBS-MJ01A-05-HYDLFA101 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS01SLBS-MJ01A-05-OBSBBA102 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS01SLBS-MJ01A-05-OBSBBA102 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS01SUM1-LJ01B-05-HYDLFA104 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS01SUM1-LJ01B-05-HYDLFA104 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS01SUM1-LJ01B-05-OBSBBA101 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS01SUM1-LJ01B-05-OBSBBA101 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS01SUM1-LJ01B-06-OBSSPA103 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS01SUM1-LJ01B-06-OBSSPA103 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS01SUM1-LJ01B-07-OBSSPA102 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS01SUM1-LJ01B-07-OBSSPA102 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS01SUM1-LJ01B-08-OBSSPA101 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS01SUM1-LJ01B-08-OBSSPA101 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03ASHS-MJ03B-05-OBSSPA302 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03ASHS-MJ03B-05-OBSSPA302 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03ASHS-MJ03B-06-OBSSPA301 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03ASHS-MJ03B-06-OBSSPA301 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03AXBS-LJ03A-09-HYDBBA302 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03AXBS-LJ03A-09-HYDBBA302 | 0 | 2026-05-16 0:00:00 | 2026-05-20 0:00:00 |
| RS03AXBS-MJ03A-05-HYDLFA301 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03AXBS-MJ03A-05-HYDLFA301 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03AXBS-MJ03A-05-OBSBBA303 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03AXBS-MJ03A-05-OBSBBA303 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03AXPS-PC03A-08-HYDBBA303 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03CCAL-MJ03F-06-HYDLFA305 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03CCAL-MJ03F-06-HYDLFA305 | 0 | 2026-05-16 0:00:00 | 2026-05-20 0:00:00 |
| RS03CCAL-MJ03F-06-OBSBBA301 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03CCAL-MJ03F-06-OBSBBA301 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03ECAL-MJ03E-05-OBSSPA303 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03ECAL-MJ03E-05-OBSSPA303 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03ECAL-MJ03E-08-OBSSPA304 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03ECAL-MJ03E-08-OBSSPA304 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03ECAL-MJ03E-09-OBSBBA302 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03ECAL-MJ03E-09-OBSBBA302 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |
| RS03INT2-MJ03D-05-OBSSPA305 | 0 | 2026-04-21 17:00:00 | 2026-04-21 23:00:00 |
| RS03INT2-MJ03D-05-OBSSPA305 | 0 | 2026-05-14 15:00:00 | 2026-05-20 0:00:00 |