The ATSB is investigating a depressurisation involving a Fokker 100, registered VH-NHC, that occurred 167 km SSE of Geraldton Airport, Western Australia.
During cruise, the crew received a master caution EXCESSIVE CABIN ALTITUDE alert and the crew observed a reduction of cabin pressure. The crew and passengers donned oxygen masks and the crew conducted a descent to 10,000 ft.
The engineering inspection revealed an insulation blanket had become lodged in the pressurisation outflow valve, which prevented the aircraft from pressurising.
The evidence collection phase of the investigation will include interviewing the flight and cabin crews, review of maintenance documentation and recorded flight data.
A final report will be released at the conclusion of the investigation. Should a critical safety issue be identified during the course of the investigation, the ATSB will immediately notify relevant parties, so that appropriate safety action can be taken.
|Date:||10 August 2020||Investigation status:||Active|
|Time:||7:40 WST||Investigation level:||Short - click for an explanation of investigation levels|
|Location:||167 km SSE Geraldton||Investigation phase:||Final report: Internal review|
|State:||Western Australia||Occurrence type:||Air/pressurisation|
|Report status:||Pending||Highest injury level:||None|
|Anticipated completion:||1st Quarter 2021|
|Aircraft manufacturer||Fokker B.V.|
|Aircraft model||F28 MK 0100|
|Type of operation||Air Transport High Capacity|
|Damage to aircraft||Unknown|
|Departure point||Perth, Western Australia|
|Destination||Geraldton, Western Australia|