A320, vicinity Auckland New Zealand, 2012

A320, vicinity Auckland New Zealand, 2012

Summary

On 20 June 2012, the right V2500 engine compressor of an Airbus A320 suddenly stalled on final approach. The crew reduced the right engine thrust to flight idle and completed the planned landing uneventfully. Extensive engine damage was subsequently discovered and the investigation conducted attributed this to continued use of the engine in accordance with required maintenance procedures following bird ingestion during the previous sector. No changes to procedures for deferral of a post bird strike boroscope inspection for one further flight in normal service were proposed but it was noted that awareness of operations under temporary alleviations was important.

Description

On 20 June 2012, an Airbus A320 (ZK-OJQ) being operated by Air New Zealand on a domestic passenger flight from Wellington to Auckland experienced sudden surging of the right hand V2500 engine late on final approach at destination in day Visual Meteorological Conditions (VMC). The engine involved was set to idle and the intended landing was completed without further event with taxi-in accomplished using the remaining serviceable engine. On the previous flight, the aircraft had ingested a bird into the same engine when landing and was operating in accordance with an approved deferral of a required borescope check of the engine for one further flight.

Investigation

After receiving preliminary information about the occurrence, in which it was clear that IAE 2500 engine involved had sustained substantial core damage, the New Zealand Transport Accident Investigation Commission (TAIC) decided to open an Investigation.

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