Incidents · aircraft

Distress signal received on 121.5 mhz from aircraft vicinity 35-00N 120-00W

Eastern North Pacific · California · HYDROPAC 1135/15

What this record establishes

Archived notice · 2015-04-26 07:55Z

This notice comes from the historical archive. Its archived status does not establish when or how the reported situation ended.

Source and dates: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · RCC ALAMEDA 020224Z APR 15.. Issued 2015-04-02 05:12Z. First collected 2026-08-17 13:38Z; last seen in collection 2026-08-17 15:46Z. Collection dates record ingestion, not a new incident or a fresh field observation.
Location covered: Eastern North Pacific · California. The parsed report position is 35.000, -120.000. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.

Original warning text

EASTERN NORTH PACIFIC.
CALIFORNIA.
DNC 13.
DISTRESS SIGNAL RECEIVED ON 121.5 MHZ FROM
AIRCRAFT VICINITY 35-00N 120-00W. VESSELS IN
VICINITY REQUESTED TO KEEP A SHARP LOOKOUT,
ASSIST IF POSSIBLE. REPORTS TO U.S. COAST GUARD ALAMEDA,
TELEX: 230172343, PHONE: 510 437 3701,
E-MAIL: RCCALAMEDA@USCG.MIL.

Reading this warning

DNC (Digital Nautical Chart): A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
Distress signal received: A rescue centre has received an alert — from a beacon, a radio call or a satellite terminal — and is asking ships to look.
Position (degrees and minutes): How warnings write positions: degrees, a hyphen, then minutes, with N/S and E/W — 49-40.8N 003-43.8W.
Keep a sharp lookout: A request to every ship in the area to watch for the vessel, people or object described.
Assist if possible: The second half of the standard rescue request: ships able to help are asked to do so.

All warning terms →

Collected reports in this area · distress & casualty cases (archived)

40 within 180 nm since 1999 · 0 in the last 12 months · 0 listed in force now

Counts include repeat notices about the same situation. NGA archive coverage ends 2024-05; live collection began 2026-08-17. The period between them is incomplete. An empty year is not evidence that no hazards occurred.

Distress signal received on 406 mhz from vessel in 35-01.07N 121-24.60W2024-01-21
Distress signal received on 406 mhz in 34-16.60N 123-18.80W2024-01-14
Distress signal received on 406 mhz in vicinity 34-44.73N 123-26.00W2023-04-28
Eastern north pacific DNC 132022-11-25
Distress signal received on 406 mhz in 32-38.00N 118-13.00W2022-08-06
Distress signal received on 121.5 mhz in 36-00N 123-00.0W2019-05-03

Month of issue in the collected archive

All available years combined. Uneven collection and repeat bulletins affect these counts; this chart does not measure the seasonality or probability of incidents.

Nearby notices listed in force · within 120 nm

C22G+FM morro bay, ca, USASpills · 53.5 nm
Hazardous operations 292000Z to 300230Z sep in area bound by 33-32.00N 120-21.00W, 32-45.00N 120-53.00W,…Exercises · 104.8 nm
PQ63+HX los angeles, ca, USASpills · 116.4 nm
Hazardous operations 1330Z to 2030Z daily 28 and 29 sep in area bound by 35-04.00N 122-39.00W, 34-45.00N…Exercises · 118.7 nm

Worldwide in the collected sources

0 distress & casualty cases (archived) listed in force · see all

Record snapshot 2026-10-02 02:54Z; source collection times vary.

Incidents

Search-and-rescue broadcasts, published only once a case has been closed for 30 days: groundings, sinkings, capsizes, fires, man overboard, overdue vessels. Nothing here is live. All current distress & casualty cases (archived) →

Not for navigation. This is a re-rendering of an official navigational warning for awareness; mariners must use official NAVAREA broadcasts and their national MSI service.