Flybe DH8D near Manchester on Feb 3rd 2016, suspected rapid loss of cabin pressure
Last Update: June 9, 2016 / 16:14:11 GMT/Zulu time
Incident Facts
Date of incident
Feb 3, 2016
Classification
Report
Airline
Flybe
Flight number
BE-326
Departure
Birmingham, United Kingdom
Destination
Aberdeen, United Kingdom
Aircraft Registration
G-JECR
Aircraft Type
De Havilland Dash 8 (400)
ICAO Type Designator
DH8D
The AAIB released their bulletin summarizing the occurrence with "The aircraft was climbing to Flight Level (FL) 190 but, at FL170, the crew heard a loud noise followed by the sound of rushing air and the commander suspected a rapid loss of cabin pressure. He initiated an emergency descent and both crew donned oxygen masks. The aircraft diverted to Manchester Airport, flying at FL100 with the cabin depressurised, and subsequently made an uneventful landing" and reporting the engineering investigation established the following:
The aircraft was inspected on the ground, paying particular attention to the condition of door seals – no defects were found. In accordance with the Fault Isolation Manual procedure, for the pressurisation fault light, both the Cabin Pressure Controller module and the Outflow Valve were replaced. The aircraft then underwent a pressurisation check, during which it performed normally, and afterwards returned to service. Analysis of the Flight Data Recorder indicated that a cabin pressure warning had not been annunciated, which would occur had the cabin altitude risen above 10,400 ft.
The Cabin Pressure Controller module and the Outflow Valve were returned to their manufacturer for strip examination. Testing there showed no defects with the Controller module but the Outflow Valve failed a number of tests and was found to have contamination and wear issues. It is considered that the valve was unserviceable and had been responsible for the depressurisation.
Incident Facts
Date of incident
Feb 3, 2016
Classification
Report
Airline
Flybe
Flight number
BE-326
Departure
Birmingham, United Kingdom
Destination
Aberdeen, United Kingdom
Aircraft Registration
G-JECR
Aircraft Type
De Havilland Dash 8 (400)
ICAO Type Designator
DH8D
This article is published under license from Avherald.com. © of text by Avherald.com.
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