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Safety Recommendation Details

Safety Recommendation A-72-021
Details
Synopsis: THE NATIONAL TRANSPORTATION SAFETY BOARD IS CURRENTLY INVESTIGATING A FATAL ACCIDENT WHICH OCCURRED NEAR FAIRFIELD, IDAHO, ON FEBRUARY 20, 1972, INVOLVING A BEECH MODEL 65B-80 AIRPLANE. PRELIMINARY INVESTIGATION OF THE ACCIDENT HAS DISCLOSED THAT A SEPARATION OF THE AIRCRAFT'S LEFT OUTER WING PANEL OCCURRED IN FLIGHT AND THAT THE SEPARATION WAS ASSOCIATED WITH AN INTENSE FIRE IN THE LEFT ENGINE. THE FIRE HAD PROGRESSED FROM THE ENGINE NACELLE THROUGH THE WHEEL WELL AND SUBSEQUENTLY RESULTED IN SUFFICIENT HEAT IMPINGEMENT UPON THE WING SPARS TO WEAKEN THEM TO THE POINT OF FAILURE.
Recommendation: INITIATE A REVIEW OF THE CERTIFICATION AND DESIGN CRITERIA OF BEECH MODEL 65 AND SIMILAR MODELS, AS APPLICABLE TO POWERPLANT INSTALLATION FIRE PROTECTION PROVISIONS.
Original recommendation transmittal letter: PDF
Overall Status: Closed - Acceptable Action
Mode: Aviation
Location: Fairfield, ID, United States
Is Reiterated: No
Is Hazmat: No
Is NPRM: No
Accident #: SEA72AS033
Accident Reports: Sun Valley Airlines, Inc., Beech 65B-80, N1027C
Report #: AAR-72-25
Accident Date: 2/20/1972
Issue Date: 2/25/1972
Date Closed: 1/1/1975
Addressee(s) and Addressee Status: FAA (Closed - Acceptable Action)
Keyword(s):

Safety Recommendation History
From: NTSB
To: FAA
Date: 7/1/1975
Response: Closed--acceptable action.

From: FAA
To: NTSB
Date: 7/7/1972
Response: A REVIEW OF THE DESIGN CRITERIA OF THE BEECH MODEL 65 SERIES AIRPLANES CONFIRMED THAT THESE MODELS COMPLY WITH THE POWERPLANT INSTALLATION FIRE PROTECTION REQUIREMENTS OF THE PERTINENT FAR'S.