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Safety Recommendation Details

Safety Recommendation A-90-177
Details
Synopsis: ON JULY 19, 1989, AT 1516, A DC-10-10, N1819U, OPERATED BY UNITED AIRLINES (UAL) AS FLIGHT 232, EXPERIENCED A CATASTROPHIC FAILURE OF THE NO. 2 TAIL-MOUNTED ENGINE DURING CRUISE FLIGHT. THE SEPARATION, FRAGMENTATION AND FORCEFUL DISCHARGE OF STAGE 1 FAN ROTOR ASSEMBLY PARTS FROM THE NO. 2 ENGINE LED TO THE LOSS OF THE THREE HYDRAULIC SYSTEMS THAT POWERED THE AIRPLANE'S FLIGHT CONTROLS. THE FLIGHTCREW EXPERIENCED SEVERE DIFFICULTIES CONTROLLING THE AIRPLANE, WHICH SUBSEQUENTLY CRASHED DURING AN ATTEMPTED LANDING AT SIOUX GATEWAY AIRPORT, IOWA. THERE WERE 285 PASSENGERS AND 11 CREWMEMBERS ONBOARD. ONE FLIGHT ATTENDANT AND 110 PASSENGERS WERE FATALLY INJURED.
Recommendation: THE NTSB RECOMMENDS THAT THE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA: ENCOURAGE MEMBERS TO INCORPORATE SPECIFIC MAINTENANCE INSPECTION TECHNIQUES AND INSPECTION EQUIPMENT IN THEIR SERVICE MANUALS THAT SIMPLIFY, AUTOMATE, AND PROVIDE REDUNDANT ("SECOND SET OF EYES") INSPECTION OVER SIGHT FOR CRITICAL PART INSPECTIONS, SUCH AS FOR ROTATING ENGINE PARTS.
Original recommendation transmittal letter: PDF
Overall Status: Closed - Unacceptable Action - No Response Received
Mode: Aviation
Location: SIOUX CITY, IA, United States
Is Reiterated: No
Is Hazmat: No
Is NPRM: No
Accident #: DCA89MA063
Accident Reports: United Airlines Flight 232 McDonnell Douglas DC-10-10‚Äč
Report #: AAR-90-06
Accident Date: 7/19/1989
Issue Date: 12/14/1990
Date Closed: 2/5/1998
Addressee(s) and Addressee Status: Aerospace Industries Association (Closed - Unacceptable Action - No Response Received)
Keyword(s):

Safety Recommendation History
From: NTSB
To: Aerospace Industries Association
Date: 6/16/1997
Response: OUR RECORDS INDICATE THAT THE BOARD HAS NEVER RECEIVED A RESPONSE FROM YOUR ASSOCIATION THIS RECOMMENDATION. WE WOULD APPRECIATE BEING INFORMED ABOUT EFFORTS THAT HAVE BEEN MADE TO IMPLEMENT THIS RECOMMENDATION. A COPY OF THESE RECOMMENDATION IS ENCLOSED FOR YOUR CONVENIENCE. IF WE HAVE NOT RECEIVED A rESPONSE FROM YOU WITHIN 45 DAYS, THIS RECOMMENDATION WILL BE CLASSIFIED "CLOSED--UNACCEPTAABLE ACTION/NO RESPONSE RECEIVED."