The Australian Transport Safety Bureau (ATSB) is investigating an unreliable airspeed and altitude indications involving a Boeing 737-476SF, registered ZK-TLJ, that occurred on a flight out of Perth Airport, Western Australia, on 10 June 2022.
During the cruise, the flight crew noted a discrepancy between the captain and first officer’s indicated altitude, indicated airspeed, and Mach number. After consulting maintenance watch, the flight crew elected to return to Perth Airport.
A final report will be released at the conclusion of the investigation. However, should a critical safety issue be identified during the course of the investigation, the ATSB will immediately notify relevant parties so appropriate safety action can be taken.
|Date:||10 June 2022||Investigation status:||Active|
|Time:||0249 UTC||Investigation level:||Short - click for an explanation of investigation levels|
|Location:||about 167 km west of Meekatharra Airport||Investigation phase:||Evidence collection|
|State:||Western Australia||Occurrence type:||Avionics/flight instruments|
|Anticipated completion:||4th Quarter 2022|
|Aircraft manufacturer||The Boeing Company|
|Serial number||24432 LN:1879|
|Operator||AIRWORKS HOLDING LIMITED|
|Type of operation||Air Transport High Capacity|
|Damage to aircraft||Nil|
|Departure point||Perth Airport, Western Australia|
|Destination||Christmas Island Airport, Christmas Island|