ASN Wikibase Occurrence # 37466
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| Date: | Friday 20 November 1998 |
| Time: | 14:20 LT |
| Type: |  Cessna 414A Chancellor |
| Owner/operator: | Gemco |
| Registration: | N6820J |
| MSN: | 414A0671 |
| Total airframe hrs: | 2675 hours |
| Engine model: | Continental TSIO-520NB |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | 1/2 mile off Mattapoisett, Massachusetts -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Hyannis, MA (KHYA) |
| New Bedford, MA | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The airplane was level at 2,000 feet, in instrument meteorological conditions, when the pilot reported 'we've just lost our ahh artificial horizon.' About 5 minutes later, air traffic control lost radar contact, and communications with the airplane. A witness about 1 mile north of the accident site stated he heard the sound of engine noise coming from the water and he described the sound as loud and constant. The sound lasted for about 30 seconds and was followed by an 'explosive collision/impact sound.' He further stated he walked to the shore and attempted to locate the source of the sound, but 'because of the fog, I couldn't see anything at all.' The airplane was located in about 25 feet of water, and was scattered over a 150 to 200 foot area. The recovered wreckage consisted of both engines, parts of the airplane's left wing, empennage, fuselage, seats, and interior. The airplane's attitude indicator was not recovered. A faint needle impression was found on the face of the airplane's vertical speed indicator between minus 2,500 and 3,000 feet per minute. Examination of the left and right vacuum pumps did not reveal any malfunctions or failures.
Probable Cause: The pilot's failure to maintain control of the airplane after an undetermined failure of the airplane's attitude indicator. A factor in this accident was fog.
Accident investigation:
 |
|
Sources:
NTSB NYC99FA026
FAA register: 2. FAA: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=6820J
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 21-Dec-2016 19:23 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 02-Jul-2018 20:12 | Dr. John Smith | Updated [Time, Location, Departure airport, Destination airport, Source, Narrative] |
| 04-Apr-2024 13:41 | ASN Update Bot | Updated [Time, Other fatalities, Departure airport, Destination airport, Source, Narrative, Accident report] |
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