Serious incident McDonnell Douglas DC-10-10 N1845U,
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ASN Wikibase Occurrence # 362877
 
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Date:Wednesday 23 September 1992
Time:10:22 LT
Type:Silhouette image of generic DC10 model; specific model in this crash may look slightly different    
McDonnell Douglas DC-10-10
Owner/operator:United Airlines
Registration: N1845U
MSN: 48261/347
Total airframe hrs:36958 hours
Engine model:GE CF6-6D
Fatalities:Fatalities: 0 / Occupants: 235
Aircraft damage: Minor
Category:Serious incident
Location:San Francisco, CA -   United States of America
Phase: En route
Nature:Unknown
Departure airport:
Destination airport:Kona, HI (KOA)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
Narrative:
A MCDONNELL DOUGLAS AIRCRAFT COMPANY DC 10 SERIES 10 AIRCRAFT EXPERIENCED AN UNCONTAINED FAILURE OF THE NUMBER 1 ENGINE WHILE IN THE CRUISE CLIMB. THE ENGINE HAD SUSTAINED AN UNCONTAINED FAILURE OF THE 14TH THROUGH 16TH STAGE COMPRESSOR SPOOL. ABOUT 11 YEARS BEFORE THE INCIDENT, THE SPOOL WAS DAMAGED BEYOND MAINTENANCE MANUAL LIMITS. THE DAMAGE CONSISTED OF A 360 DEGREE RUB ON THE AFT RIM SURFACE (SURFACE Q) OF THE 16TH STAGE COMPRESSOR. THE SPOOL WAS PLACED IN STORAGE FOR FIVE YEARS AND THEN RETURNED TO SERVICE AFTER BEING REPAIRED. FLIGHT PROFILE STRESSES WERE ANALYZED BY ENGINE MANUFACTURER. ACCORDING TO THE ENGINE MANUFACTURER, PEAK STRESSES IN THE AFT RIM REGION OR SURFACE Q OCCUR AT THE SAME TIME IN THE FLIGHT PROFILE AS THE UNCONTAINED FAILURE.

Probable Cause: A FRACTURED COMPRESSOR ASSEMBLY.

Accident investigation:
cover
  
Investigating agency: NTSB
Report number: LAX92IA397
Status: Investigation completed
Duration: 1 year
Download report: Final report

Sources:

NTSB LAX92IA397

Location

Revision history:

Date/timeContributorUpdates
18-Mar-2024 11:13 ASN Update Bot Added

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