Event Details

Title:Pressurization emergency, Boeing 737-204 (ADV) EI-CJC, 70 nm south of Spanish/French Pyrenees border, November 8, 2004
Micro summary:Pressurization emergency resulting from bleed air being turned off for takeoff.
Event Time:2004-11-08 at 1330 UTC
File Name:2004-11-08-IE.pdf
Publishing Agency:Air Accident Investigation Unit (AAIU)
Publishing Country:Ireland
Report number:2005/009
Site of event:70 nm south of Spanish/French Pyrenees border
Departure:Reus Airport, Reus, Spain
Airplane Type(s):Boeing 737-204 (ADV)
Flight Phase:Cruise
Type of flight:Revenue
Serious Injuries:0
Other Injuries:0
Executive Summary:Following a “BLEEDS OFF” take-off (See from Runway (RWY) 25 at Reus Airport (LERS), Spain, the aircraft climbed to its cruising level of FL320 enroute to Dublin Airport (EIDW). Shortly after becoming established in the cruise, the “Cabin Altitude (CAB ALT)” horn sounded. Unable to control the cabin altitude rising further the Captain initiated an emergency descent. During this descent, the flight crew discovered that the engine bleed switches were selected in the “OFF” position. The aircraft diverted to Biarritz (LFBZ), in France, where it landed without further incident.

Learning Keywords:Systems - Pneumatics
Systems - Pressurization
Systems - Pressurization - Bleeds-off Pressurization Emergency
Close match:Pressurization emergency, Boeing 737-548, Aer Lingus, EI-CDB
Air conditioning misconfiguration resulting in cabin depressurization, Ryanair Boeing 737-204 (ADV), EI-CJE
Pressurization emergency, Boeing 737-800 EI-CSC, October 7, 2000
Cabin depressurization, Westjet Airlines, Ltd., Boeing 737-200, C-FGWJ, Kelowna, British Columbia, 120 nm, NE 12 June 2000


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