McDonnell Douglas DC-9-51 N412EA

Summary

On 19 October 1985 at about 16:35 local time, a McDonnell Douglas DC-9-51 registered N412EA, operated by Eastern Airlines, was involved in an incident near Tampa, Florida, United States. 122 people were on board and nobody was injured. The aircraft was slightly damaged. No probable cause statement is available for this record.

Date

19 October 1985 at 16:35

Classification

Incident

Location

Tampa, Florida, United States

Nearest airport

Tampa Intl (TPA)

Coordinates

27.9609, -82.4899

Aircraft

McDonnell Douglas DC-9-51

Registration

N412EA

Category

Airplane

Engines

2

Operator

Eastern Airlines

Operating rule

Part 121: Air Carrier

Purpose of flight

Unknown

Phase of flight

Not recorded

Route

Unknown → Atlanta

Aircraft damage

Minor

Weather

VMC

Light

Day

NTSB number

MIA86MA013

Nobody was injured.

The NTSB has not published a probable cause for this record. No probable cause statement is present in the source data.

Nothing about the cause is stated here that is not in the source record.

Read the full NTSB 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.

Quoted verbatim from the NTSB record.