ASN Wikibase Occurrence # 146454
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| Date: | Friday 22 June 2012 |
| Time: | 17:05 |
| Type: |  Piper J-5A Cub Cruiser |
| Owner/operator: | Private |
| Registration: | N40985 |
| MSN: | 51217 |
| Total airframe hrs: | 450 hours |
| Engine model: | Continental A80 SERIES |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Offshore 12 nautical miles east of Gloucester, MA -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Survey |
| Departure airport: | Beverly, MA (BVY) |
| Beverly, MA (BVY) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot filled the airplane’s fuel tanks before departing on the over-ocean aerial observation flight. About 5.8 hours into the flight, while the pilot was returning to the departure airport, the engine began losing power. The pilot attempted to restore engine power using carburetor heat and the engine primer but was unsuccessful, so he ditched the airplane in the ocean about 21 miles from the destination airport. The airplane subsequently sank and was not recovered; therefore, no postaccident examination of the engine or airframe could be conducted. Although no information was available regarding the dew point conditions near the accident site, according to a Federal Aviation Administration carburetor icing probability chart, the temperature and dew point at the destination airport were conducive to the formation of carburetor ice at cruise/glide power settings. Postaccident fuel consumption calculations based on information published by the engine manufacturer showed that the airplane had a potential fuel endurance of between 3.8 and 7.1 hours depending on power setting, with an average endurance of 4.8 hours. The pilot estimated that the airplane contained about 5 gallons of fuel when the engine lost power. Because the airplane sank, the investigation was not able to conclusively determine the reason for the loss of engine power.
Probable Cause: A loss of engine power for reasons that could not be determined because the aircraft sank after ditching and was not recovered.
Accident investigation:
 |
|
Sources:
NTSB
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 23-Jun-2012 10:13 | gerard57 | Added |
| 25-Jun-2012 10:01 | Geno | Updated [Time, Aircraft type, Registration, Cn, Location, Phase, Source, Narrative] |
| 21-Dec-2016 19:28 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 27-Nov-2017 20:45 | ASN Update Bot | Updated [Cn, Operator, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative] |
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