Alaska B739 at Juneau and Ketchikan on Apr 18th 2017, cabin pressure problems

Last Update: April 19, 2017 / 22:46:12 GMT/Zulu time

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Incident Facts

Date of incident
Apr 18, 2017

Classification
Incident

Cause
Cabin pressure problems

Airline
Alaska Airlines

Flight number
AS-176

Departure
Juneau, United States

Destination
Seattle, United States

Aircraft Registration
N305AS

Aircraft Type
Boeing 737-900

ICAO Type Designator
B739

An Alaska Airlines Boeing 737-900, registration N305AS performing flight AS-176 from Juneau,AK to Seattle,WA (USA), was climbing out of Juneau when the crew stopped the climb at FL250 due to problems with the cabin pressure but continued the flight in direction of Seattle. About 18 minutes after levelling off at FL250 the crew initiated a descent to 8000 feet due to the loss of cabin pressure and diverted to Ketchikan,AK (USA) for a safe landing about 40 minutes after departure from Juneau.

A passenger reported the captain announced after boarding that there was a malfunction of the air conditioning system and there would be delay of 20 minutes, 40 minutes later another delay of 20 minutes was announced, about 30 minutes later the captain announced it would be at least one hour and permitted the passengers to disembark into the departure lounge. The aircraft was finally able to depart with a delay of 2:40 hours. About 30 minutes into the flight the crew announced cabin pressure had been lost and they were diverting to Ketchikan. They needed to stay in Ketchikan over night.

The occurrence aircraft had been involved in a similiar occurrence 8 days earlier already, see Incident: Alaska B739 near Portland on Apr 10th 2017, cabin pressure problems.
Incident Facts

Date of incident
Apr 18, 2017

Classification
Incident

Cause
Cabin pressure problems

Airline
Alaska Airlines

Flight number
AS-176

Departure
Juneau, United States

Destination
Seattle, United States

Aircraft Registration
N305AS

Aircraft Type
Boeing 737-900

ICAO Type Designator
B739

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