Vietnam A321 at Ho Chi Minh City on Mar 18th 2020, rejected takeoff due to uncontained engine failure sets grass alight
Last Update: January 12, 2021 / 10:35:25 GMT/Zulu time
Incident Facts
Date of incident
Mar 18, 2020
Classification
Incident
Cause
Rejected takeoff
Airline
Vietnam Airlines
Flight number
VN-920
Departure
Ho Chi Minh City, Vietnam
Destination
Phnom Penh, Cambodia
Aircraft Registration
VN-A392
Aircraft Type
Airbus A321
ICAO Type Designator
A321
The airline reported there was a technical issue with one of the nose wheel tyres, there was no fire or explosion on the aircraft. The crew rejected takeoff and stopped safely. There were no injuries.
Vietnam's Civil Aviation Authority reported a part of the tyre impacted and damaged the side of the right hand engine's (V2533) cover, which in turn caused the grass fire. The CAA have opened an investigation into the occurrence.
On Mar 22nd 2020 (Mar 21st 2020 US East Coast Time) the FAA released an emergency airworthiness directive EAD-2020-07-51 for all International Aero Engines AG (IAE) V2522-A5, V2524-A5, V2525-D5, V2527-A5, V2527E-A5, V2527M-A5, V2528-D5, V2530-A5, and V2533-A5 model turbofan engines.
The FAA argues: "This emergency AD was prompted by investigative findings from an event that occurred on March 18, 2020, in which an Airbus Model A321-231 airplane, powered by IAE V2533-A5 model turbofan engines, experienced an uncontained high-pressure turbine (HPT) 1st-stage disk failure that resulted in an aborted takeoff. This condition, if not addressed, could result in release of high-energy debris, damage to the engine, damage to the airplane, and loss of the airplane."
Operators of such engines are required to determined whether a HPT first stage disk of specific serial numbers are installed and if so, remove those HPT stage 1 disks from the engine within 5 cycles.
On Apr 9th 2020 the NTSB reported: "The government of Vietnam has notified the NTSB of an incident involving an Airbus A321 airplane that occurred on March 18, 2020. A Vietnam Airbus A321-231 powered by two International Aero Engines V2533-A5 turbofan engines experienced a No. 2 (right) engine high pressure turbine disk rupture and uncontainment during the takeoff roll from Tan Son Nhat International Airport, Ho Chi Minh City, Vietnam. The Captain performed a rejected takeoff and the airplane was stopped safely on the runway; no injuries were report and no evacuation was necessary. Post event engine inspection confirmed a high pressure turbine stage 1 disk had burst and penetrated through the engine case and engine cowling."
On Jun 17th 2020 The Aviation Herald learned that the crew heard a loud bang from the right hand side followed by an ECAM "ENG 2 FAIL" indication. The aircraft also began to veer to the right side. The captain took control of the aircraft and rejected takeoff at 130 KIAS. After the aircraft came to a stop the ECAM actions were performed including discharging the fire agent. As result of the rejected takeoff tyre #4 deflated. An assessment by tower and crew indicated no emergency evacuation was needed. The passengers disembarked normally onto the runway and were bussed to the terminal.
On Jan 6th 2021 the FAA released another Airworthiness Directive AD-2021-01-03 now also including the high pressure turbine stage 2 disks reasoning:
On March 18, 2020, an Airbus Model A321-231 airplane, powered by IAE V2533-A5 model turbofan engines, experienced an uncontained HPT 1st-stage disk failure that resulted in high-energy debris penetrating the engine cowling. Based on a preliminary analysis of this event, on March 21, 2020, the FAA issued Emergency AD 2020-07-51, which requires the removal from service of certain HPT 1st-stage disks installed on IAE V2522-A5, V2524-A5, V2525-D5, V2527-A5, V2527EA5, V2527M-A5, V2528-D5, V2530-A5, and V2533-A5 model turbofan engines.
Since the FAA issued AD 2020-07-51, the manufacturer conducted a root cause analysis and identified a different population of HPT 1st-stage and HPT 2nd-stage disks that are affected by the unsafe condition and require removal from service. This condition, if not addressed, could result in failure of the HPT, uncontained HPT failure, damage to the engine, damage to the airplane, and loss of the airplane. The FAA is issuing this AD to address the unsafe condition on these products.
AD Requirements
This AD requires the removal from service of certain HPT 1st-stage and HPT 2nd-stage disks installed on IAE V2500-A1, V2522-A5, V2524-A5, V2525-D5, V2527-A5, V2527E-A5, V2527MA5, V2528-D5, V2530-A5, V2531-E5, and V2533-A5 model turbofan engines.
Incident Facts
Date of incident
Mar 18, 2020
Classification
Incident
Cause
Rejected takeoff
Airline
Vietnam Airlines
Flight number
VN-920
Departure
Ho Chi Minh City, Vietnam
Destination
Phnom Penh, Cambodia
Aircraft Registration
VN-A392
Aircraft Type
Airbus A321
ICAO Type Designator
A321
This article is published under license from Avherald.com. © of text by Avherald.com.
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