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Safety Recommendation Details

Safety Recommendation A-90-176
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 AIR TRANSPORT ASSOCIATION: ENCOURAGE MEMBERS TO INCORPORATE SPECIFIC MAINTENANCE INSPECTION TECHNIQUES IN THEIR MAINTENANCE MANUALS AND MAINTENANCE CONTRACTS THAT SIMPLIFY, AUTOMATE AND PROVIDE REDUNDANT ("SECOND SET OF EYES") INSPECTION OVERSIGHT FOR CRITICAL PART INSPECTION, SUCH AS FOR ROTATING ENGINE PARTS.
Original recommendation transmittal letter: PDF
Overall Status: Closed - Acceptable Action
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: 12/17/1997
Addressee(s) and Addressee Status: Air Transport Association of America, Inc. (Closed - Acceptable Action)
Keyword(s):

Safety Recommendation History
From: NTSB
To: Air Transport Association of America, Inc.
Date: 6/16/1997
Response: ASSOCIATION CONCERNING THESE RECOMMENDATIONS. WE WOULD APPRECIATE BEING INFORMED ABOUT EFFORTS THAT HAVE BEEN MADE TO IMPLEMENT THESE RECOMMENDATIONS. A COPY OF THESE RECOMMENDATIONS IS ENCLOSED FOR YOUR CONVENIENCE. IF WE HAVE NOT RECEIVED A RESPONSE FROM YOU WITHIN 45 DAYS, THESE RECOMMENDATIONS WILL BE CLASSIFED "CLOSED--UNACCEPTABLE ACTION/NO RESPONSE RECEIVED."