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Strap extension not always fitted
Date issue released
Issue number
AO-2022-055-SI-01
Issue Status
Closed – Adequately addressed
Transport Function
Aviation: Air transport
Issue Owner
Link Airways
Mode of Transport
Aviation
Issue finalisation date
Safety Issue Description

On one-third of the Link Airways Saab 340B flights for which video surveillance was examined, including the occurrence flight, the flight crews did not fit the strap extension between the propeller strap and the airstairs. As the cabin door could not be closed with the strap extension in place, its correct fitment would almost certainly prevent a flight from proceeding with a propeller strap fitted.

Issue Status Justification

Cabin crew checks should reduce the likelihood of the strap extension not being fitted. Flight crew checks should prevent the flight proceeding in the event the strap extension is not fitted and the propeller strap is left on. This action will ultimately reduce the likelihood of a propeller strap not being removed prior to departure.

Proactive action
Action number
AO-2022-055-PSA-198
Organisation
Link Airways
Action Status
Closed
Action description

Link Airways advised that it added the following amendments within the Cabin crew operating manual:

  • a check by the cabin manager to confirm that the strap extension is fitted before passenger boarding can commence
  • a check by the cabin manager that both propeller straps have been removed and that the propellers are dressed prior to engine start.

The Flight crew operating manual was amended to include:

  • an explicit check in the engine start checklist that both propellers are ‘crossed [dressed] and clear’
  • a requirement for the pilot flying to confirm propeller rotation prior to the introduction of fuel. 

Link also enhanced its Line Operational Safety Program, including ground pre- and post- flight inspections, and confirmed training standards.