Aviation safety investigations & reports

Cabin crew incapacitation involving Fokker F100, registered VH-FNU, near Mount Magnet Aerodrome, WA on 27 December 2021

Investigation number:
Status: Active
Investigation in progress


The ATSB has commenced a transport safety investigation into a cabin crew incapacitation occurrence involving Fokker F100, registered VH-FNU, near Mount Magnet Aerodrome, Western Australia on 27 December 2021.

The aircraft was being operated on a scheduled passenger flight between Newman and Perth, Western Australia with 5 crew and 7 passengers. During cruise at flight level 340 (34,000 ft), a cabin crew member began to feel unwell and was treated with portable oxygen. The flight crew climbed to flight level 350. A few minutes later the other two cabin crew members also felt unwell and reported to the flight crew that they suspected possible hypoxia.

The first officer later reported that they had also felt light-headed and experienced slight nausea. As a precaution, the flight crew donned oxygen masks, manually deployed the passenger oxygen masks and conducted an emergency descent to 10,000 ft. The aircraft landed at Perth Airport and one cabin crew member was taken to hospital for assessment.

The investigation is continuing. 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.

General details
Date: 27 December 2021   Investigation status: Active  
Time: 1108 WST   Investigation level: Short - click for an explanation of investigation levels  
Location   (show map): 28 NM 209 degrees from Mount Magnet Aerodrome   Investigation phase: Evidence collection  
State: Western Australia   Occurrence type: Crew incapacitation  
  Occurrence category: Incident  
Report status: Pending   Highest injury level: Minor  
Anticipated completion: 3rd Quarter 2022    

Aircraft details

Aircraft details
Aircraft manufacturer Fokker B.V.  
Aircraft model F28 MK 0100  
Aircraft registration VH-FNU  
Serial number 11373  
Type of operation Air Transport High Capacity  
Sector Jet  
Damage to aircraft Nil  
Departure point Newman, WA  
Destination Perth, WA  
Last update 06 January 2022