Serious incident McDonnell Douglas DC-9-51 N676MC,
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ASN Wikibase Occurrence # 314476
 
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Date:Saturday 6 August 2011
Time:10:52 LT
Type:Silhouette image of generic DC95 model; specific model in this crash may look slightly different    
McDonnell Douglas DC-9-51
Owner/operator:Delta Air Lines
Registration: N676MC
MSN: 47652/798
Year of manufacture:1975
Engine model:P & W JT8D-17 SER
Fatalities:Fatalities: 0 / Occupants:
Aircraft damage: Minor
Category:Serious incident
Location:Atlanta Hartsfield-Jackson International Airport, GA (ATL/KATL) -   United States of America
Phase: Take off
Nature:Unknown
Departure airport:Atlanta Hartsfield-Jackson International Airport, GA (ATL/KATL)
Destination airport:Pittsburgh International Airport, PA (PIT/KPIT)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
Narrative:
Based on metallurgical analysis, a fan blade in the No. 2 engine separated at the blade root due to a high cycle fatigue crack when the engines were accelerated for takeoff. The liberated blade entered the gas path and caused damage to the inlet guide vanes, the remaining fan blades, fan exit guide vanes, and low pressure compressor as it was ingested. The mid span shrouds on the remaining fan blades exhibited shingling and witness marks also consistent with impact from the separated blade. The crew reacted to the engine failure and were able to abort takeoff and safely stop the airplane on the runway surface.

Probable Cause: The probable cause of the No. 2 engine failure and subsequent aborted takeoff was the high cycle fatigue failure of a fan blade near the blade root that resulted in extensive low pressure compressor damage and compressor case breach.

Accident investigation:
cover
  
Investigating agency: NTSB
Report number: ENG11IA043
Status: Investigation completed
Duration: 3 years and 3 months
Download report: Final report

Sources:

NTSB ENG11IA043

Location

Revision history:

Date/timeContributorUpdates
02-Jun-2023 17:41 ASN Update Bot Added

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