Westjet B737 over Atlantic on May 30th 2017, fuel mystery

Last Update: June 2, 2017 / 20:05:58 GMT/Zulu time

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Incident Facts

Date of incident
May 30, 2017

Classification
Incident

Flight number
WS-30

Aircraft Registration
C-GWCN

Aircraft Type
Boeing 737-700

ICAO Type Designator
B737

A Westjet Boeing 737-700, registration C-GWCN performing flight WS-30 (dep May 29th) from Halifax,NS (Canada) to Glasgow,SC (UK) with 130 people on board, was enroute when the crew noticed at their first fuel check point, that they were about 500 lbs of fuel below planned progression. At the ETOPS exit point the crew found they were 1100 lbs below the planned fuel. The crew increased their fuel monitoring and entered the Oceanic crossing checking fuel flow, EGT and fuel balance with all parameters appearing normal. A fuel leak was suspected and the crew proceeded to shut the APU down. About 40 minutes later the fuel seemed to have stabilized at about 800 lbs above the required minimum to continue to Glasgow. However, about 30 minutes prior to landing the extra fuel started to disappear, the crew declared PAN and requested priority handling from ATC. The aircraft landed safely in Glasgow, however, the 800 lbs extra fuel had all disappeared. Emergency services checked the aircraft for leaks but didn't find any.

The Canadian TSB reported the operator is investigating the incident.

The occurrence aircraft remained on the ground in Glasgow for about 4 hours, then departed for the return flight WS-31 with a delay of about 2.75 hours.
Aircraft Registration Data
Registration mark
C-GWCN
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
737-7CT
ICAO Aircraft Type
B737
Year of Manufacture
Serial Number
Aircraft Address / Mode S Code (HEX)
Maximum Take off Mass (MTOM) [kg]
Engine Count
Engine Type
Main Owner
FpkAljll lhbdqcgniik khde pifdnllklAqeqAngflgcpcAmipkbd dApcl Subscribe to unlock

Aircraft registration data reproduced and distributed with the permission of the Government of Canada.

Incident Facts

Date of incident
May 30, 2017

Classification
Incident

Flight number
WS-30

Aircraft Registration
C-GWCN

Aircraft Type
Boeing 737-700

ICAO Type Designator
B737

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