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Safety Recommendation Details

Safety Recommendation A-72-115
Details
Synopsis: APACHE AIRLINES, INC., DEHAVILLAND MODEL 104-7AXC, N4922V, CRASHED NEAR COOLIDGE, ARIZONA, ON MAY 6, 1971, AT APPROXIMATELY 1315 M.S.T., WHILE EN ROUTE FROM TUCSON TO PHOENIX, ARIZONA. THE AIRCRAFT WAS OBSERVED TO ENTER A SHALLOW DIVE WHICH STEEPENED AS THE AIRCRAFT APPROACHED THE GROUND. THE RIGHT WING SEPARATED FROM THE FUSELAGE JUST PRIOR TO GROUND IMPACT. THE AIRCRAFT DISINTEGRATED UPON IMPACT AND ALL 10 PASSENGERS AND THE TWO CREWMEMBERS WERE FATALLY INJURED.
Recommendation: (A)CONDUCT A ONE-TIME METALLURGICAL INSPECTION ON AN EXPEDITED BASIS BY APPROVED METHODS OF ALL LOWER MAIN WING SPAR ROOT FITTINGS P/N CPD-2004 ON ALL DEHAVILLAND MODEL DH-104 "DOVE" AIRPLANES THAT HAVE BEEN MODIFIED UNDER STC NO. SA1747WE. (B) REVIEW THE ADEQUACY OF AIRWORTHINESS DIRECTIVE 70-15-6 AND REVISE AS NECESSARY TO ASSURE ADEQUATE SERVICE LIMITS ON THIS FITTING.
Original recommendation transmittal letter: PDF
Overall Status: Closed - Unacceptable Action
Mode: Aviation
Location: Coolidge, AZ, United States
Is Reiterated: No
Is Hazmat: No
Is NPRM: No
Accident #: LAX71AL066
Accident Reports: Apache Airlines, Inc., DeHavilland DH-104-7AXC, N4922V
Report #: AAR-72-19
Accident Date: 5/6/1971
Issue Date: 6/23/1971
Date Closed: 2/13/1973
Addressee(s) and Addressee Status: FAA (Closed - Unacceptable Action)
Keyword(s):

Safety Recommendation History
From: FAA
To: NTSB
Date: 8/11/1972
Response: 8/11/72 - RESPONSE FROM THE FAA TO SAY THAT THEY HAD SATISFIED THE BOARD'S EARLIER RECOMMENDATION BUT THE REQUEST TO REEVALUATE THE SUPPLEMENTAL TYPE CERTIFICATE (STC) PROGRAM FROM A QUALITY CONTROL VIEWPOINT WAS A NEW ASPECT. THEY HAD ALWAYS LOOKED FOR WAYS AND MEANS TO IMPROVE THEIR INSPECTION AND SURVEILLANCE PROGRAMS AND THEY SHALL CONTINUE TO SEEK IMPROVEMENTS IN ALL THEIR AREAS OF RESPONSIBILITY. HOWEVER, THE STC PROGRAM AND DESIGNATED ENGINEERING REPRESENTATIVE (DER) PROGRAM SHOULD NOT, IN THEIR JUDGEMENT, BE FAULTED BY VIRTUE OF QUESTIONABLE TECHNIQUE IN ONE ISOLATED INSTANCE. 11/30/72 IN RESPONSE TO THE BOARD'S REQUEST OF 10/4/72 THAT THE FAA AUDIT ITS STC PROGRAM, THE FAA STATED THAT THEY HAD REVIEWED THE ACCIDENT REPORT AND DID NOT FIND IT TO REFLECT ADVERSELY ON THE STC PROGRAM. ALSO, THEY DID NOT BELIEVE THAT FURTHER INVESTIGATION OF THE STC PROGRAM WOULD PROVE PRODUCTIVE INSOFAR AS IMPROVING AIRWORTHINESS OF AIRCRAFT, HOWEVER, THEY WILL CONTINUE TO STRIVE, WITH ALL MEANS AT THEIR DISPOSAL, TO PROVIDE THE HIGHEST PRACTICABLE SAFETY POSSIBLE FOR ALL AIRCRAFT UNDER ITS JURISDICTION.