Alaska B734 near San Jose on Aug 8th 2012, loss of cabin pressure, electric failure
Last Update: August 9, 2012 / 17:05:27 GMT/Zulu time
Incident Facts
Date of incident
Aug 8, 2012
Classification
Incident
Cause
Loss of cabin pressure
Airline
Alaska Airlines
Flight number
AS-539
Departure
Ontario, United States
Destination
Seattle, United States
Aircraft Registration
N797AS
Aircraft Type
Boeing 737-400
ICAO Type Designator
B734
Airport fire fighters reported their initial information indicated the aircraft had experienced a catastrophic electrical failure and the loss of cabin pressure, the electrical problems turned out minor later on.
The airline confirmed the aircraft diverted to San Jose due to a serious electrical problem. The aircraft has been removed from service and will not be permitted to re-enter service before a very detailed examination has identified the cause of the electrical issue.
The airline subsequently added that a malfunction of the air/ground switch, indicating that the aircraft was on the ground although enroute, caused the loss of cabin pressure and several systems including autoflight systems to drop offline. The passenger oxygen masks did not need to deploy.
Incident Facts
Date of incident
Aug 8, 2012
Classification
Incident
Cause
Loss of cabin pressure
Airline
Alaska Airlines
Flight number
AS-539
Departure
Ontario, United States
Destination
Seattle, United States
Aircraft Registration
N797AS
Aircraft Type
Boeing 737-400
ICAO Type Designator
B734
This article is published under license from Avherald.com. © of text by Avherald.com.
Article source
You can read 2 more free articles without a subscription.
Subscribe now and continue reading without any limits!
Read unlimited articles and receive our daily update briefing. Gain better insights into what is happening in commercial aviation safety.
Send tip
Support AeroInside by sending a small tip amount.
Related articles
Fleet type match
Alaska B734 at Seattle on Feb 28th 2016, lightning strike
An Alaska Airlines Boeing 737-400, registration N797AS performing flight AS-69 from Seattle,WA to Ketchikan,AK (USA) with 150 people on board, was…
Fleet type match
Alaska B739 at San Jose on Nov 17th 2024, APU failure and smell of smoke
An Alaska Airlines Boeing 737-900, registration N431AS performing flight AS-1084 from Seattle,WA to San Jose,CA (USA) with 175 passengers and 6 crew,…
Fleet type match
Alaska B739 at Washington and Los Angeles on Nov 14th 2024, blew tyre on departure
An Alaska Airlines Boeing 737-900, registration N461AS performing flight AS-309 from Washington Dulles,DC to Los Angeles,CA (USA) with 175 passengers…
Fleet type match
Alaska B39M at Portland on Oct 20th 2024, bird strike
An Alaska Airlines Boeing 737-9 MAX, registration N968AK performing flight AS-300 from Portland,OR to Orlando,FL (USA) with 174 people on board, was…
Alaska B739 near Missoula on Oct 11th 2024, cracked windshield
An Alaska Airlines Boeing 737-900, registration N288AK performing flight AS-345 from Columbus,OH to Seattle,WA (USA), was enroute at FL360 about…
Fleet type match
Alaska B39M and Southwest B737 at Nashville on Sep 12th 2024, operational error forces rejected takeoff
An Alaska Airlines Boeing 737-9 MAX, registration N919AK performing flight AS-369 from Nashville,TN to Seattle,WA (USA) with 160 passengers and 16…
Newest articles
Fleet type match
Delta A21N at Boston on Mar 21st 2025, smoke in cabin
A Delta Airlines Airbus A321-200N, registration N535DN performing flight DL-1780 from Boston,MA (USA) to San Juan (Puerto Rico) with 197 people on…
Fleet type match
Transat A333 at Montreal on Mar 16th 2025, first officer partially incapacitated on final approach
An Air Transat Airbus A330-300, registration C-GTSD performing flight TS-539 from Cancun (Mexico) to Montreal,QC (Canada) with 340 passengers and 11…
Subscribe today
Are you researching aviation incidents? Get access to AeroInside Insights, unlimited read access and receive the daily newsletter.
Pick your plan and subscribePartner
ELITE Simulation Solutions is a leading global provider of Flight Simulation Training Devices, IFR training software as well as flight controls and related services. Find out more.
SafetyScan Pro provides streamlined access to thousands of aviation accident reports. Tailored for your safety management efforts. Book your demo today
AeroInside Blog
Popular aircraft
Airbus A320Boeing 737-800
Boeing 737-800 MAX
Popular airlines
American AirlinesUnited
Delta
Air Canada
Lufthansa
British Airways