Hawaiian A332 at Los Angeles on Sep 22nd 2022, trim motor failure causes erratic movements of trim wheel
Last Update: October 27, 2022 / 13:25:08 GMT/Zulu time
The NTSB reported the primary trim motor failed causing the erratic movements of the trim wheel. No notification of any faults were displayed on the ECAM. The crew returned to Los Angeles.
The aircraft returned to service after about 2 days on the ground.
On Oct 27th 2022 the NTSB released their preliminary report reporting the sequence of events:
As the airplane was climbing through Flight Level (FL) 360 after departure from LAX, the flight crew reported that the trimmable horizontal stabilizer (THS) pitch trim wheel began a rapid uncommanded nose up/nose down movement while autopilot 2 was engaged. The first officer, who was the pilot flying, disconnected autopilot 2 and took manual control of the aircraft. The trim wheel continued the uncommanded movement with the autopilot disengaged; however, the crew stated the airplane was controllable during manual flight. No messages regarding the pitch trim anomaly were generated on the electronic centralized aircraft monitor (ECAM).
The captain declared an emergency and notified air traffic control that they would be returning to LAX and would need to jettison fuel. He then requested a non-revenue A330 captain seated in the cabin to assist in the cockpit. The captain stated he used this additional crew member, plus an A330 first officer that was jumpseating, to distribute workload in the cockpit: assisting the primary crew in troubleshooting the pitch trim, jettisoning fuel, and preparing for the airplane’s arrival back to LAX.
Before landing, the crew assessed the aircraft handling qualities in the landing configuration and remained vigilant to the continued movement of the manual trim wheel. The landing was uneventful, and the aircraft was taxied to a remote parking area where the passengers deplaned.
Aircraft Registration Data
This article is published under license from Avherald.com. © of text by Avherald.com.
Read unlimited articles and receive our daily update briefing. Gain better insights into what is happening in commercial aviation safety.
Support AeroInside by sending a small tip amount.
A Hawaiian Airlines Airbus A330-200, registration N393HA performing flight HA-35 from Phoenix,AZ to Honolulu,HI (USA) with 281 passengers and 10…
A Hawaiian Airlines Airbus A330-200, registration N392HA performing flight HA-16 from Honolulu,HI to San Diego,CA (USA) with 284 people on board, was…
A Hawaiian Airlines Boeing 717-200, registration N476HA performing flight HA-230 from Kahului,HI to Kona,HI (USA), was on approach to Kona when the…
A Hawaiian Airlines Airbus A330-200, registration N379HA performing flight HA-10 from Honolulu,HI to Los Angeles,CA (USA), was climbing out of…
A Hawaiian Airlines Airbus A330-200, registration N375HA performing positioning flight HA-8075 from Everett,WA to Seattle,WA (USA) with 2 crew,…
An Iberia Airbus A321-200 on behalf of Finnair, registration EC-JGS performing flight AY-1654 from Barcelona,SP (Spain) to Helsinki (Finland), was…
A THY Turkish Airlines Airbus A321-200, registration TC-JRR performing flight TK-1941 from Istanbul (Turkey) to Brussels (Belgium), was on approach…
Are you researching aviation incidents? Get access to AeroInside Insights, unlimited read access and receive the daily newsletter.Pick your plan and subscribe
A new way to document and demonstrate airworthiness compliance and aircraft value. Find out more.
ELITE Simulation Solutions is a leading global provider of Flight Simulation Training Devices, IFR training software as well as flight controls and related services. Find out more.
Never miss an article from AeroInside. Subscribe to our free weekly newsletter and join 5603 existing subscribers.
Popular aircraftAirbus A320
Boeing 737-800 MAX
Popular airlinesAmerican Airlines