Event Details


Title:Contained #2 engine failure, Boeing 727-232, August 14, 1996
Micro summary:Contained #2 turbine failure on this Boeing 727-232 resulted in a diversion.
Event Time:1996-08-14 at 1920 EDT
File Name:1996-08-14-US.pdf
Publishing Agency:National Transportation Safety Board (NTSB)
Publishing Country:USA
Report number:NYC96IA168
Pages:5
Site of event:Flushing, NY
Departure:LaGuardia International Airport, New York, New York, USA
Destination:Tampa International Airport, Tampa, Florida, USA
Airplane Type(s):Boeing 727-232
Flight Phase:Takeoff
Registration(s):N533DA
Operator(s):Delta Air Lines
Type of flight:Revenue
Occupants:139
Fatalities:0
Serious Injuries:0
Minor/Non-Injured:139
Other Injuries:0
Executive Summary:

NTSB short summary:

a failure of the low pressure turbine assembly for undetermined reason(s).

NTSB synopsis:

The pilots reported that shortly after takeoff, there was a compressor stall in the No. 2 engine, followed by a loss of engine power, and an abnormal oil pressure reading. The engine was shut down and the pilot made an emergency landing at JFK Airport. Debris came to rest in a residential area where a vehicle was struck. Examination of the engine revealed that turbine parts punctured through the turbine exhaust case in several locations but were contained by the fan exit duct. All the 4th stage turbine blades fractured across the airfoil just above the platform and were retained in the disk. Twelve of the twenty-five 4th stage turbine vane clusters were missing and the remaining clusters showed considerable trailing edge damage. All the 3rd stage turbine blades and vanes exhibited minor secondary damage with no blade or vane damage observed forward of the 3rd stage. The engine had accumulated 235 flight hours and 171 cycles prior to the incident since its last heavy maintenance inspection. The investigation did not reveal the exact origin of the turbine failure.

NTSB factual narrative text:

On August 14, 1996, about 1920 eastern daylight time, a Boeing 727-232, N533DA, operated by Delta Airlines as flight 801, experienced a turbine failure of the number two engine, during departure from LaGuardia Airport, Flushing, New York. The airplane received minor damage, and the occupants were not injured. Visual meteorological conditions existed and an instrument flight plan was filed. The destination was Tampa, Florida and the flight was operated under the provisions of 14 CFR Part 121.

The pilot reported that shortly after takeoff, there was a compressor stall, followed by a loss of engine power, and an abnormal oil pressure reading. The engine was shut down and the flight diverted to John F. Kennedy Airport for a landing. After landing, the flight taxied to the gate where the passengers deplaned normally through the jetway.

Debris came to rest in a residential area where a vehicle was struck.

Examination of the engine revealed that turbine parts punctured through the turbine exhaust case in several locations but were contained by the fan exit duct. All the 4th stage turbine blades were fractured across the airfoil just above the platform and were retained in the disk. Twelve of the twenty-five 4th stage turbine vane clusters were missing and the remaining clusters showed considerable trailing edge damage. All the 3rd stage turbine blades and vanes exhibited minor secondary damage with no blade or vane damage observed forward of the 3rd stage. The engine had accumulated 235 flight hours and 171 cycles prior to the incident since its last heavy maintenance inspection. The investigation did not reveal the exact origin of the turbine failure.
Learning Keywords:Systems - Engine - Compressor surge/stall
Systems - Engine - Contained Engine Failure
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Engine failure, Aircraft incident at Kajaani airport, Finland 1. October 1996
Runway excursion on landing involving a Boeing 747-136, G-AWNN at Shannon Airport, on 24 October 1998
Crash short of runway, Boeing 737-400, British Midlands, G-OBME at Nottingham East Midlands Airport
Engine vibration on climb, Airbus A321-211, F-GTAF
Engine failure on takeoff, Boeing 747-436, G-BNLG
Birdstrike, rejected takeoff, and runway overrun, Boeing 737-200, Nashville, July 8, 1996
Bird ingestion into both engines, Douglas DC-9-15F, March 4, 1999
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