Junction 14-A — Incident Report

INTERNATIONAL SEAM NAVIGATION AUTHORITY · OFFICE OF VESSEL OPERATIONS

INCIDENT REPORT · FORM ISNA-OVO-IR-7

1 · SUMMARY OF EVENT

At 13:58 ship-time, 23 October 2142, NV Erika Magnusdóttir commenced a scheduled pulse-test of the local boundary at Junction 14-A. The test was authorised under standard survey protocol following twenty-two days of passive observation. All systems read nominal on the pre-test verification at 13:52.

The pulse-test commenced at 14:00 at harmonic-array gain G+1. The boundary engaged within expected tolerance for the first 0.18 seconds. The secondary stack registered a phase inversion at 14:00:18. The boundary destabilised at 14:00:22. Cabin recovery procedure was initiated at 14:00:36. The recovery cabin was retrieved at 14:04:48. It was empty.

2 · TIMELINE

3 · TECHNICAL FINDINGS

Secondary-stack analysis subsequent to event recovery established that the Mark VIII redundancy module (installed during the 2134 refit) had been operating at a persistent 0.03% entropy offset across the full duration of the in-system mission, spiking to 0.07% at the moment of pulse-test failure. This offset is within tolerance under passive conditions and was not flagged at any pre-mission inspection. Under pulse-test load, the offset became operationally significant.

Replacement stack installed during the post-event refit at Svalbard Orbital Yards (Days 38-42) registered a baseline offset of 0.04% on initial calibration. Cause of this inheritance is under investigation by ISNA Engineering Division.

4 · CASUALTY

5 · CLASSIFICATION

The phenomenon engaged at Junction 14-A is classified as unidentified deep-field phenomenon — junction 14-A vicinity — no classification available at this time. Routine survey access to Junction 14-A is suspended pending review by the Office of Vessel Operations.

NV Erika Magnusdóttir released from on-site duty Day 26. Returned to Tromsø Day 28. ISNA debrief: Days 31-34. Bergen family-effects visit: Day 35. Yard refit completed Day 42.