ASN Wikibase Occurrence # 314275
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| Date: | Tuesday 15 October 2013 |
| Time: | 13:51 LT |
| Type: |  Airbus A319-132 |
| Owner/operator: | Spirit Airlines |
| Registration: | N516NK |
| MSN: | 2704 |
| Year of manufacture: | 2006 |
| Engine model: | IAE V2524-A5 |
| Fatalities: | Fatalities: 0 / Occupants: 150 |
| Aircraft damage: | Minor |
| Category: | Serious incident |
| Location: | Greenville, Texas -
 United States of America
|
| Phase: | En route |
| Nature: | Passenger - Scheduled |
| Departure airport: | Dallas/Fort Worth International Airport, TX (DFW/KDFW) |
| Atlanta Hartsfield-Jackson International Airport, GA (ATL/KATL) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
A Spirit Airlines Airbus A319, registration number N516NK, experienced a No. 1 (left) engine failure during climb out from Dallas-Fort Worth International Airport (DFW), Dallas, Texas. The airplane was equipped with two International Aero Engines (IAE) V2524-A5 turbofan engines. The flight crew reported that about ten minutes after takeoff, at FL190, the electronic centralized aircraft monitor (ECAM) displayed a No. 1 engine pressure ratio (EPR) mode fault, N2 over limit warning, and an exhaust gas temperature (EGT) over limit warning. The ECAM notifications coincided with heavy vibrations that could be felt throughout the cockpit and cabin. Both engines were advanced to the take-off/go around (TO/GA) power setting until a No. 1 engine fire warning registered about four minutes later at which time the flight crew shutdown the No. 1 engine and discharged one fire suppression bottle. During the event sequence smoke began entering the cockpit and the crew donned oxygen masks. The airplane returned to DFW and executed an uneventful single engine landing. Aircraft Rescue and Fire Fighting (ARFF) personnel met the aircraft on the runway and determined the fire had been extinguished.
Based on metallurgical analysis, a No. 1 engine high pressure turbine (HPT) 2nd stage blade separated below the blade platform due to stress corrosion cracking in the blade J-channel cooling air cavity. The liberated blade entered the gas path and caused extensive damage to the HPT and low pressure turbine (LPT) hardware and cases. The damaged engine was left at a high power setting for about four minutes until the crew received a No. 1 engine fire warning. During this time the turbine was exposed to temperatures that exceeded the material annealing temperature and resulted in failure and separation of multiple components including the LPT 3rd and 4th stage disks, turbine exhaust case center body, and the No. 5 bearing housing. The engine nacelle was not breached and all separated engine components traveled out the back of the engine.
Probable Cause: A high pressure turbine 2nd stage blade separation due to stress corrosion cracking in the J channel cooling cavity. The failed blade entered the gas path and caused substantial damage to the low pressure turbine. The engine was subsequently left at a high power setting for approximately four minutes, exposing the turbine hardware to temperatures that exceeded the material annealing temperature and resulted in in failure and separation of multiple engine components.
Accident investigation:
 |
|
Sources:
NTSB ENG14IA001
History of this aircraft
Other occurrences involving this aircraft
| 6 May 2008 | N516NK | Spirit Airlines | 0 | Detroit-Metropolitan Wayne County Airport, MI (DTW/KDTW) | |
min |
| Cowling loss | ||||||
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 02-Jun-2023 15:22 | ASN Update Bot | Added |
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