The ATSB is investigating the depressurisation of a Boeing 737, VH-XMO near Melbourne Airport, Victoria, on 6 July 2021.
While passing 8,000 ft on descent, the crew received pressurisation system warnings and the cabin depressurised. The engineering inspection revealed an insulation blanket had detached and lodged in the aft outflow valve.
The evidence collection phase of the investigation will include a review and examination of maintenance procedures, maintenance records and the gathering of any other relevant evidence.
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:||06 July 2021||Investigation status:||Active|
|Time:||15:00 UTC||Investigation level:||Short - click for an explanation of investigation levels|
|Location:||Ballarat Aerodrome, 161° T 37Km (FR24)||Investigation phase:||Evidence collection|
|Report status:||Pending||Highest injury level:||None|
|Anticipated completion:||1st Quarter 2022|
|Aircraft manufacturer||The Boeing Company|
|Serial number||23488 LN:1352|
|Operator||EXPRESS FREIGHTERS AUSTRALIA PTY LIMITED|
|Damage to aircraft||Nil|
|Departure point||Perth, Western Australia|