Norwegian B788 near Calgary on Jul 22nd 2017, engine oil leak

Last Update: August 23, 2017 / 19:03:40 GMT/Zulu time

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Incident Facts

Date of incident
Jul 22, 2017

Classification
Incident

Flight number
DY-7064

Destination
Oslo, Norway

Aircraft Registration
LN-LNB

ICAO Type Designator
B788

A Norwegian Air Shuttle Boeing 787-800, registration LN-LNB performing flight DY-7064 from Oakland,CA (USA) to Oslo (Norway), was enroute at FL370 about 80nm west of Calgary,AB (Canada) when the crew detected an engine (Trent 1000) oil leak and decided to return to Oakland. The aircraft descended to FL360 for the return. About 20 minutes later the crew drifted the aircraft down to FL220 and continued to Oakland for a safe landing on runway 30 about 2 hours after turning around.

The airline reported the indications were false. The aircraft is now expected to depart again with a delay of about 12 hours, the passengers have been taken to hotels in the meantime.

On Aug 23rd 2017 the Canadian TSB reported the crew received a Low Oil Level indication for the right hand engine. The flight crew consulted with dispatch and airline's maintenance then decided to return to Oakland. The flight crew reduced the engine to idle about 20 minutes after receiving the initial indication, descended the aircraft to FL220 and landed safely in Oakland. Oil residue was found on the tail pipe of the high pressure compressor.

The occurrence aircraft remained on the ground until Jul 26th.
Incident Facts

Date of incident
Jul 22, 2017

Classification
Incident

Flight number
DY-7064

Destination
Oslo, Norway

Aircraft Registration
LN-LNB

ICAO Type Designator
B788

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