Event Details

Title:Depressurization in Cruise, Aer Lingus Boeing 737-500, EI-CDD, north of Paris, December 9, 2000
Micro summary:Mechanical failures result in a pressurization failure on this Boeing 737-500.
Event Time:2000-12-09 at 1345 UTC
File Name:2000-12-09-IE.pdf
Publishing Agency:Air Accident Investigation Unit (AAIU)
Publishing Country:Ireland
Report number:2003/012
Diversion Airport:Charles De Gaulle International Airport (Roissy Airport), Paris, France
Site of event:North of Paris, FL370
Departure:Dublin Airport, Dublin, Ireland
Airplane Type(s):Boeing 737-500
Flight Phase:Cruise
Operator(s):Aer Lingus
Type of flight:Revenue
Serious Injuries:0
Other Injuries:0
Diverted to:Charles De Gaulle International Airport (Roissy Airport), Paris, France
Executive Summary:While cruising north of Paris at FL 370, the aircraft experienced a pressurisation failure. After declaring a “MAYDAY”, the crew carried out an emergency descent to FL 100. Diverting to Charles de Gaulle (LFPG) Paris, the aircraft landed at 14.20 hrs without further incident. There were no reported injuries to crew or passengers.

(b) Causes
A combination of factors, including failure of the CPC in AUTO-mode and a defective outflow valve, coupled with an intermittent supply pack fault could have given rise to this loss of pressurisation.
Learning Keywords:Systems - Pressurization
Close match:Pressurization failure, Boeing 737-436, G-DOCR, 26 June 1996
Pressurization emergency, Final Report by the Aircraft Accident Investigation Bureau concerning the incident to the MCDonnell Douglas DC-9-82 aircraft, LN-RML operated by SAS Scandinavian Airlines System under flight number SK 682 on 13 July 2003
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Damage caused to airplane by light cover, McDonnell Douglas DC-9-51, December 27, 2000
Cabin depressurization, Westjet Airlines, Ltd., Boeing 737-200, C-FGWJ, Kelowna, British Columbia, 120 nm, NE 12 June 2000


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