Accident Gulfstream AA-5B N4520D,
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ASN Wikibase Occurrence # 373902
 
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Date:Friday 21 November 1986
Time:16:33 LT
Type:Silhouette image of generic AA5 model; specific model in this crash may look slightly different    
Gulfstream AA-5B
Owner/operator:Wings Express Aviation, Inc.
Registration: N4520D
MSN: AA5B-1061
Total airframe hrs:1693 hours
Engine model:LYCOMING O-360-A4K
Fatalities:Fatalities: 0 / Occupants: 2
Aircraft damage: Substantial
Category:Accident
Location:Fullerton, CA -   United States of America
Phase: Approach
Nature:Training
Departure airport:Long Beach, CA (KLGB)
Destination airport:Fullerton, CA (KFUL)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
Narrative:
A GULFSTREAM AMERICAN AA-5B LOST POWER AND COLLIDED WITH A TREE SHORT OF THE RUNWAY WHILE ON AN IFR TRAINING FLIGHT. THE FLIGHT INSTRUCTOR HAD JUST SWITCHED FUEL TANKS WHEN THE ENGINE BEGAN TO RUN ROUGH AND THEN QUIT RUNNING. HE WAS UNABLE TO RESTART THE ENGINE. THE PRIVATE PILOT UNDERGOING INSTRUMENT TRAINING CONDUCTED THE PREFLIGHT INSPECTION WITHOUT THE AID OF THE AIRCRAFT OPERATORS MANUAL. HE DID NOT CHECK THE LEFT AND RIGHT WING FUEL SUMP DRAINS. AIRCRAFT FUEL SAMPLES WERE TAKEN FROM THE RIGHT AND LEFT WING TANK FUEL SUMPS AND FUEL LINE FROM THE FUEL PUMP TO THE CARBURETOR. LABRATORY TEST RESULTS INDICATED THE FUEL SAMPLE TAKEN FROM THE FUEL LINE FROM THE FUEL PUMP TO THE CARBURETOR CONTAINED 12.6 % WATER BY VOLUME. THE RIGHT FUEL SUMP ALSO CONTAINED TRACES OF WATER. EXAMINATION OF THE REFUELING TRUCK SAMPLE DID NOT REVEAL ANY IMPURITIES.

Probable Cause:

Accident investigation:
cover
  
Investigating agency: NTSB
Report number: LAX87LA046
Status: Investigation completed
Duration: 1 year and 3 months
Download report: Final report

Sources:

NTSB LAX87LA046

Revision history:

Date/timeContributorUpdates
27-Mar-2024 18:33 ASN Update Bot Added

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