ASN Wikibase Occurrence # 42670
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| Date: | Tuesday 20 December 1988 |
| Time: | 18:00 |
| Type: |  Bell 206L-1 LongRanger II |
| Owner/operator: | Helicopters Unlimited |
| Registration: | N1072S |
| MSN: | 45326 |
| Total airframe hrs: | 3244 hours |
| Engine model: | ALLISON C28B |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | San Francisco Bay, off Oakland, California -
 United States of America
|
| Phase: | En route |
| Nature: | Executive |
| Departure airport: | Oakland, California (OAK/KOAK) |
| Hunter's Point, San Francisco, California | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT DESCENDED INTO THE SAN FRANCISCO BAY AREA WHILE ON A NIGHT VISUAL FLIGHT FROM OAKLAND TO SAN FRANCISCO. THE WEATHER WAS INSTRUMENT METEOROLOGICAL CONDITIONS WITH VISIBILITY BETWEEN ONE TO FOUR MILES WITH MODERATE RAIN SHOWERS AND FOG.
PRIOR TO THE ACCIDENT THE PILOT ATTEMPTED TO RADIO SAN FRANCISCO TOWER BUT WAS ADVISED HE WAS STILL BROADCASTING ON THE OAKLAND TOWER FREQUENCY. THE PILOT ACKNOWLEDGED THE ADVICE AND WAS NOT HEARD FROM AGAIN.
THE AIRCRAFT WAS RECOVERED FROM THE BAY AFTER EXPOSURE TO SALT WATER. EXAMINATION OF THE AIRCRAFT WRECKAGE REVEALED NO EVIDENCE OF A MECHANICAL MALFUNCTION PRIOR TO THE ACCIDENT. THE PILOT WAS NOT FOUND. THE INVESTIGATION REVEALED THAT THE PILOT HAD LITTLE RECENT INSTRUMENT EXPERIENCE.
CAUSE: PILOTS INTENTIONAL FLIGHT INTO KNOWN ADVERSE WEATHER CONDITIONS FROM WHICH HE INADVERTENTLY DESCENDED INTO THE WATER AT A HIGH RATE OF SPEED. CONTRIBUTING TO THE ACCIDENT WAS THE PILOT'S FAILURE TO OBTAIN A WEATHER BRIEFING; LACK OF RECENT INSTRUMENT FLYING EXPERIENCE; OVERCONFIDENT IN HIS OWN ABILITY TO CONDUCT A SAFE FLIGHT IN ADVERSE WEATHER CONDITIONS.
Sources:
1. NTSB Identification: LAX89LA073 at http://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20001213X27450&key=1&queryId=4dc35ddb-0675-48d2-8cc2-3c9861cd1699&pgno=6&pgsize=50
2. FAA: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?omni=Home-N-Number&nNumberTxt=1072S
3. http://articles.latimes.com/1988-12-22/news/mn-1065_1_pilot-presumed-helicopters
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 22-Aug-2016 21:22 | Dr.John Smith | Updated [Time, Location, Departure airport, Destination airport, Source, Narrative] |
| 21-Dec-2016 19:24 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
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