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Safety Recommendation Details

Safety Recommendation A-69-004
Details
Synopsis: THE INVESTIGATION OF THE LOS ANGELES AIRWAYS' S-61-L HELICOPTER ACCIDENT OF AUGUST 14, 1968, REVEALED, AS YOU KNOW, THAT A MAIN ROTOR BLADE SPINDLE, P/N S6110-23325-2, SERIAL NO. AJ19, HAD FAILED WHILE IN FLIGHT. THIS CAUSED THE (YELLOW) MAIN ROTOR BLADE TO SEPARATE FROM THE HUB. THE SPINDLE HAD FAILED DUE TO METAL FATIGUE.
Recommendation: THE BOARD RECOMMENDED THAT THE FAA REEVALUATE PROCEDURES AND CRITERIA INVOLVED IN CARRYING OUT THE INTENT OF FEDERAL AVIATION REGULATIONS PART 21, SUBPART D, (CHANGES TO TYPE CERTIFICATES). THE PROCEDURES AND CRITERIA SHOULD INSURE THAT ALL CHANGES AFFECTING A PART CRITICAL TO THE CONTINUED SAFE OPERATION OF THE AIRCRAFT BE BROUGHT TO THE ATTENTION OF THE APPROPRIATE FAA INSPECTOR SO THAT PROPER ACTION MAY BE TAKEN.
Original recommendation transmittal letter: PDF
Overall Status: Closed - Acceptable Action
Mode: Aviation
Location: Los Angeles, CA, United States
Is Reiterated: No
Is Hazmat: No
Is NPRM: No
Accident #: DCA69A0003
Accident Reports: Los Angeles Airways, Inc., 5-61L, Helicopter, N300Y
Report #: AAR-69-07
Accident Date: 8/14/1968
Issue Date: 2/20/1969
Date Closed: 4/2/1969
Addressee(s) and Addressee Status: FAA (Closed - Acceptable Action)
Keyword(s): Maintenance, Oversight

Safety Recommendation History
From: FAA
To: NTSB
Date: 3/24/1969
Response: 3/24/69 THE FAA REPORTED THEY HAD REQUESTED THEIR REGIONS TO REVIEW THE PROCEDURES USED BY THE MANUFACTURERS, OPERATORS, REPAIR STATIONS, AND THE FAA IN CATEGORIZING AND EVALUATING MAJOR AND MINOR REPAIRS AND DESIGN CHANGES, AND TO RECOMMEND ANY CHANGES NEEDED IN PROCEDURES. FAA HAVE ALSO REVIEWED WITH SIKORSKY REPAIR STATION PERSONNEL THE CRITERIA FOR CATEGORIZING REPAIRS AS MAJOR OR MINOR, AND THE PROCEDURES FOR EVALUATING SUCH REPAIRS; INSTITUTING PROCEDURES TO INSURE THAT SIKORSKY ENGINEERING CONTINUES TO EVALUATE INSTRUCTIONS FOR ALL REPAIRS PROCESSED THROUGH THEIR REPAIR STATION.