Westjet B38M enroute on Oct 21st 2023, loss of cabin pressure after both packs failed

Last Update: November 9, 2023 / 20:37:55 GMT/Zulu time

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Incident Facts

Date of incident
Oct 21, 2023

Classification
Accident

Flight number
WS-2251

Destination
Calgary, Canada

Aircraft Registration
C-GDDR

Aircraft Type
Boeing 737-800MAX

ICAO Type Designator
B38M

A Westjet Boeing 737-8 MAX, registration C-GDDR performing flight WS-2251 from Puerto Vallarta (Mexico) to Calgary,AB (Canada), was climbing through about FL350 out of Puerto Vallarta when the crew received a left hand pack caution indication. While working the related checklist the right hand pack caution light illuminated and a cabin altitude warning occurred. The crew actioned the related checklist and found the cabin pressure uncontrollable. The crew donned their oxygen masks, declared emergency and initiated an emergency descent initially to FL240, subsequently to 14,000 and 13,000 feet. The crew consulted with dispatch and decided to divert to Phoenix,AZ (USA), where the aircraft landed normally and taxied to the apron.

The Canadian TSB reported 2 people received minor injuries.
Aircraft Registration Data
Registration mark
C-GDDR
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
737-8
ICAO Aircraft Type
B38M
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
Oct 21, 2023

Classification
Accident

Flight number
WS-2251

Destination
Calgary, Canada

Aircraft Registration
C-GDDR

Aircraft Type
Boeing 737-800MAX

ICAO Type Designator
B38M

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