Loss of pressurization Incident Avro RJ100 HB-IXW, Monday 2 July 2012
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Date:Monday 2 July 2012
Time:12:15 LT
Type:Silhouette image of generic RJ1H model; specific model in this crash may look slightly different    
Avro RJ100
Owner/operator:Swiss International Airlines
Registration: HB-IXW
MSN: E3272
Year of manufacture:1995
Fatalities:Fatalities: 0 / Occupants: 95
Other fatalities:0
Aircraft damage: None
Location:24 NM south-east of Rolampont beacon -   France
Phase: En route
Nature:Passenger - Scheduled
Departure airport:LSZH
Destination airport:EGLC
Confidence Rating: Accident investigation report completed and information captured
Narrative:
At 09:47 UTC the Avro RJ100, registration HB-IXW took off on a scheduled passenger flight, LX456, from Zurich (LSZH) to London City (EGLC).
After a flight time of approximately 22 minutes and when in climb at FL244, various warning lights illuminated, including the R ZONE HI TEMP warning. This warning triggered several automatic shutdowns, including the shutdown of airconditioning pack 2. At this time, the aircraft was 24 NM south-east of the Rolampont omni-directional radio beacon (RLP) in France.
Since airconditioning pack 1 was already deactivated at the commencement of the flight, the cockpit crew realised that cabin pressurisation was no longer ensured and that the pressure inside the aircraft would drop. The crew donned their oxygen masks. A good minute after the first alerts, the CABIN HI ALT warning light illuminated. The crew reported the emergency situation to the Reims Control air traffic control centre and initiated an emergency descent.
Shortly afterwards the oxygen masks in the cabin were automatically deployed. These were donned by the passengers in accordance with the cabin crew’s instructions. At 10:15:40 UTC the aircraft reached FL 100. After a detailed analysis and assessment of the situation, the crew decided to return to Zurich. The approach and landing were uneventful. None of the passengers or crew was injured.

Causes
The serious incident is attributable to the fact that after a defect in the right bleed air system the cabin pressurisation system failed completely at FL 244 (7437 m) and the crew were forced to make an emergency descent to a safe altitude. The fact that airconditioning pack 1 had been deactivated prior to the flight contributed to the serious incident.

Accident investigation:
cover
  
Investigating agency: 
Report number: 
Status: Investigation completed
Duration:
Download report: Final report

Sources:

http://www.sust.admin.ch/pdfs/AV-berichte/2199_e.pdf

History of this aircraft

Other occurrences involving this aircraft

21 August 2003 HB-IXW Swiss International Air Lines 0 Zürich-Kloten Airport (ZRH/LSZH) min
Runway excursion

Revision history:

Date/timeContributorUpdates
29-Jul-2012 04:50 Alpine Flight Added
18-Jan-2014 19:46 harro Updated [Location, Source, Narrative]

Corrections or additions? ... Edit this accident description

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