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Safety Recommendation Details

Safety Recommendation A-90-147
Details
Synopsis: ON JULY 19, 1989, A MCDONNELL DOUGLAS DC-10-10, OPERATED BY UNITED AIRLINES AS FLIGHT 232, EN ROUTE FROM DENVER, COLORADO, TO CHICAGO, ILLINOIS, WITH 296 PERSONS ON BOARD, EXPERIENCED AN IN-FLIGHT EMERGENCY FOLLOWING THE FRAGMENTATION AND SEPARATION OF THE NO. 2 ENGINE FAN DISK. THE AIRPLANE CRASHED DURING AN ATTEMPTED EMERGENCY LANDING TO RUNWAY 4/22 AT SIOUX GATEWAY AIRPORT (SUX) SIOUX CITY, IOWA. DURING THE ACCIDENT, THE AIRPLANE SEPARATED INTO FOUR SECTIONS AND PORTIONS BURNED. OF THE 296 PERSONS ON BOARD, 110 PASSENGERS AND 1 FLIGHT ATTENDANT WERE FATALLY INJURED: 35 OF THESE PERSONS, SOME WITH TRAUMATIC BLUNT FORCE INJURIES, DIED OF ASPHYXIA SECONDARY TO SMOKE INHALATION, AND 76 DIED OF BLUNT FORCE TRAUMA. OF THE REMAINING 185 PERSONS, 47 SUSTAINED SERIOUS INJURIES, 125 SUSTAINED MINOR INJURIES, AND 13 WERE NOT INJURED.
Recommendation: THE NTSB RECOMMENDS THAT THE U.S. DEPARTMENT OF THE AIR FORCE: REQUIRE THAT KOVATCH A/S32P-18 VEHICLES COMPLY WITH KOVATCH TECHNICAL SERVICE BULLETIN 8-KFTS-P-18-5 AND EXPEDITE THE DISTRIBUTION OF MODIFICATION KITS THAT WILL PERMIT COMPLIANCE WITH THE SERVICE BULLETIN.
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: 10/19/1990
Date Closed: 3/27/1992
Addressee(s) and Addressee Status: United States Department of Defense, Department of the Air Force (Closed - Acceptable Action)
Keyword(s):

Safety Recommendation History
From: NTSB
To: United States Department of Defense, Department of the Air Force
Date: 3/27/1992
Response:

From: United States Department of Defense, Department of the Air Force
To: NTSB
Date: 9/19/1991
Response: THE AIR FORCE DID TAKE THE APPROPRIATE REPAIR ACTION TO EMPLOY THE USE OF HOSE CLAMPS WHEN IT FIRST DISTRIBUTED INTERIM, REPAIR INSTRUCTIONS TO THE FIELD IN SEPTEMBER 1989 AND AGAIN WHEN KOVATCH CORPORATION RELEASED THE TECHNICAL SERVICE BULLETIN IN NOVEMBER 1989.

From: NTSB
To: United States Department of Defense, Department of the Air Force
Date: 7/31/1991
Response:

From: United States Department of Defense, Department of the Air Force
To: NTSB
Date: 1/12/1991
Response: (SUMMARIZED) ALL 210 P-18 FIRE TRUCK HAVE BEEN MODIFIED BY REPLACING THE 2 INCH STIFFENER WITH A 4 INCH STIFFENER. AS AN ENHANCEMENT, A STEEL REINFORCED HOSE NEGATES THE NEED FOR STIFFENERS AND WILL BE INSTALLED BY ATTRITION.