Serious incident McDonnell Douglas DC-9-51 N412EA,
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ASN Wikibase Occurrence # 376046
 
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Date:Saturday 19 October 1985
Time:12:35 LT
Type:Silhouette image of generic DC95 model; specific model in this crash may look slightly different    
McDonnell Douglas DC-9-51
Owner/operator:Eastern Air Lines
Registration: N412EA
MSN: 47733
Engine model:P&W JT8D-17
Fatalities:Fatalities: 0 / Occupants: 122
Aircraft damage: Minor
Category:Serious incident
Location:Tampa, FL -   United States of America
Phase: Initial climb
Nature:Passenger - Scheduled
Departure airport:(KTPA)
Destination airport:Atlanta Hartsfield-Jackson International Airport, GA (ATL/KATL)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
Narrative:
SHORTLY AFTER LIFT-OFF, THE FLT CREW HEARD A LOUD NOISE (SIMILAR, BUT LOUDER THAN A TIRE BLOW-OUT) AS THE #1 ENG FAILED.THEY SECURED THE #1 ENG, REMAINED IN THE TRAFFIC PATTERN & LANDED ON THE SAME RWY. AFTER LANDING, AN EXAM REVEALED THE COMBUSTION CHAMBER OUTER CASE, PN 616315, HAD FAILED FROM LOW CYCLE FATIGUE. THE FATIGUE HAD PROPAGATED FROM A BOLT HOLEON THE REAR FLANGE & PROGRESSED FORWARD UNTIL IT REACHED A CRITICAL LENGTH, THEN THE REMAINING FRACTURE WAS FROM TENSILE OVERLOAD. NICKEL-CADMIUM PLATING WAS FOUND IN THE FATIGUE CRACKED AREA. THE CASE WAS LAST REPLATED AFTER IT WAS MODIFIED, APRX 5152 FLT HRS PRIOR TO THE ACDNT. PRATT & WHITNEY ENGINE REPAIR MANUAL 72-42-11 PROHIBITS THE NICKEL-CADMIUM PLATING OF THE FRONT & REAR CASE FLANGE BOLT HOLES.

Probable Cause:

Accident investigation:
cover
  
Investigating agency: NTSB
Report number: MIA86MA013
Status: Investigation completed
Duration:
Download report: Final report

Sources:

NTSB MIA86MA013

Location

Revision history:

Date/timeContributorUpdates
29-Mar-2024 12:10 ASN Update Bot Added

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