Canada B789 near Arctic Bay on Dec 16th 2019, engine accelerated uncommandedly

Last Update: December 23, 2019 / 23:24:46 GMT/Zulu time

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Incident Facts

Date of incident
Dec 16, 2019

Classification
Incident

Airline
Air Canada

Flight number
AC-31

Destination
Beijing, China

Aircraft Registration
C-FRSE

ICAO Type Designator
B789

An Air Canada Boeing 787-9, registration C-FRSE performing flight AC-31 from Toronto,ON (Canada) to Beijing (China) with 297 people on board, was enroute at FL340 about 75nm southwest of Arctic Bay,NU (Canada) and about 1700nm north of Toronto when the left hand engine (GEnx) accelerated itself without any command by pilots or autothrust. The pilots reduced the thrust lever by about 1.5 inches to compensate. After consultation with dispatch and maintenance the crew decided to return to Toronto, declared PAN PAN and landed safely back in Toronto about 4 hours after the decision to return.

The Canadian TSB reported maintenance replaced the throttle quadrant module.
Aircraft Registration Data
Registration mark
C-FRSE
Country of Registration
Canada
Date of Registration
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Certification Basis
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TCDS Ident. No.
Manufacturer
Boeing
Aircraft Model / Type
787-9
ICAO Aircraft Type
B789
Year of Manufacture
Serial Number
Aircraft Address / Mode S Code (HEX)
Maximum Take off Mass (MTOM) [kg]
Engine Count
Engine Type
Main Owner
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Aircraft registration data reproduced and distributed with the permission of the Government of Canada.

Incident Facts

Date of incident
Dec 16, 2019

Classification
Incident

Airline
Air Canada

Flight number
AC-31

Destination
Beijing, China

Aircraft Registration
C-FRSE

ICAO Type Designator
B789

This article is published under license from Avherald.com. © of text by Avherald.com.
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