Loganair AT42 at Aberdeen on Aug 27th 2022, both engines show 0 torque in flight, multiple electrical failures

Last Update: August 27, 2025 / 16:35:02 GMT/Zulu time

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Photo of Loganair G-LMRC, ATR ATR-42 — Loganair G-LMRC, ATR ATR-42 (Photo credit: Ronnierob / Flickr / License: CC by-sa)

Incident Facts

Date of incident
Aug 27, 2022

Classification
Incident

Airline
Loganair

Flight number
LM-72

Departure
Aberdeen, United Kingdom

Destination
Sumburgh, United Kingdom

Aircraft Registration
G-LMRC

Aircraft Type
ATR ATR-42

ICAO Type Designator
AT42

A Loganair Avions de Transport Regional ATR-42-500, registration G-LMRC performing flight LM-72 from Aberdeen,SC to Sumburgh,SC (UK), was climbing out of Aberdeen when the crew stopped the climb at about 10500 feet after multiple electrical faults occurred and both engines (PW127) showed zero torque. The aircraft descended to 5000 feet, maintained 5000 feet for about 7 minutes and subsequently positioned for a safe landing on Aberdeen's runway 34 about 35 minutes after departure.

The AAIB rated the occurrence a serious incident and opened an investigation.

The British AAIB reported: "During the departure climb the aircraft suffered a loss of multiple electrical systems and the flight crew reported that all the electronic instrument display screens went blank. The displays returned but some system faults remained. The aircraft returned to Aberdeen where it landed normally. A fault with the 1PA electrical contactor was found which had probably contributed to the severity of the incident, but the underlying cause(s) are still under investigation. The aircraft manufacturer published an Airworthiness Operator Message (AOM 2022/04) in October 2022 to recommend that all operators of this aircraft type perform an operational test of the 1PA contactor. The manufacturer is currently in discussions with EASA about publishing an Airworthiness Directive to mandate this initial test and a repetitive test." The investigation is ongoing.

On Aug 27th 2025 the AAIB released an interim statement reading:

This statement provides the mandated update on the third anniversary of a Serious Incident which remains under investigation. The Serious Incident involved an ATR 42-500, registration G-LMRC, after departure from Aberdeen Airport, on 27 August 2022. During the departure climb the aircraft suffered a loss of multiple electrical systems and the flight crew reported that all the electronic instrument display screens went blank. The displays returned but some system faults remained. The aircraft returned to Aberdeen where it landed normally. A fault with the 1PA electrical contactor was found which had probably contributed to the severity of the incident, but the underlying cause(s) are still under investigation. The aircraft manufacturer published an Airworthiness Operator Message (AOM 2022/04) in October 2022 to recommend that all operators of this aircraft type perform an operational test of the 1PA contactor. In October 2023 the European Union Aviation Safety Agency published Airworthiness Directive 2023-0181 which mandated the operational test of the 1PA contactor and for it to be repeated at 1,000 flight hour intervals.

During the past year additional ground testing and flight testing has been accomplished by the aircraft manufacturer to help understand the causes of the event. A final report will be published when the investigation has been completed.