Accident Cessna A185F N1795R,
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ASN Wikibase Occurrence # 287716
 
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Date:Friday 1 June 2012
Time:15:00 LT
Type:Silhouette image of generic C185 model; specific model in this crash may look slightly different    
Cessna A185F
Owner/operator:
Registration: N1795R
MSN: 18502511
Year of manufacture:1974
Total airframe hrs:4490 hours
Engine model:Continental IO 520 SERIES
Fatalities:Fatalities: 0 / Occupants: 2
Aircraft damage: Substantial
Category:Accident
Location:Skwentna, Alaska -   United States of America
Phase: En route
Nature:Private
Departure airport:Skwentna, AK
Destination airport:Anchorage-Lake Hood, AK (LHD/PALH)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
Narrative:
The private pilot and one passenger departed from a lake on a personal cross country flight. During the pilot's preflight check, he noted that the right wing fuel tank contained about 32 gallons of fuel, and the left wing fuel tank contained about 5 gallons of fuel. About 8 miles south of the departure lake, at an altitude of about 2,000 feet mean sea level, the airplane's engine lost power. The pilot said that he turned on the fuel boost pump, and the engine rpm rose momentarily but dropped again. He stated that he did not recall checking the fuel selector valve as part of his emergency restart procedures. He executed a forced landing in a marsh.

The pilot stated that he always operated the airplane with the fuel selector valve in the 'Both Tanks On” position; however, a postaccident inspection of the airplane revealed that the airplane's fuel selector valve was in the 'Left Tank Only” position. A postaccident engine run revealed no mechanical anomalies with the engine, and it operated normally at all power settings. An annual inspection of the airplane was completed on May 20, 2012, and the airplane had flown approximately four hours since the inspection.

Both the normal 'Before Takeoff” and the 'Emergency Landing without Engine Power” checklists direct the pilot to check the fuel selector valve position. Given the lack of mechanical deficiencies with the airplane's engine and the discovery of the fuel selector valve in the 'Left Tank Only” position, it is likely that the pilot did not check the fuel selector valve either during his preflight or after the loss of engine power. Considering the amount of fuel noted in the left wing fuel tank during the pilot's preflight, it is also likely that the engine lost power due to fuel starvation.

Probable Cause: The pilot's improper fuel management, which resulted in fuel starvation and a total loss of engine power in cruise flight. Contributing to the accident was the pilot's failure to follow the checklist after the loss of engine power.

Accident investigation:
cover
  
Investigating agency: NTSB
Report number: ANC12LA046
Status: Investigation completed
Duration: 9 months
Download report: Final report

Sources:

NTSB ANC12LA046

Location

Revision history:

Date/timeContributorUpdates
04-Oct-2022 13:39 ASN Update Bot Added

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