Network Aviation did not provide their flight crew with a diversion decision-making procedure for the circumstances where their flights encountered unforecast weather below landing minima. This increased the risk that their flight crew would not anticipate and be adequately prepared for a diversion.
The ATSB notes that Network Aviation have introduced several diversion decision-making tools for their Fokker Aircraft F100 flight crew. They included an amendment to their flight plans to include an 'alternate summaries' section for all flights, the top of descent arrival brief procedure to include 'minimum divert fuel', and the introduction of an F100 Company Procedures Manual with pre-populated standard divert calculations for their F100 destinations. The ATSB is satisfied that the inclusion of these tools will address the safety issue.
Network Aviation have produced a Fokker Aircraft F100 Company Procedures Manual incorporating standard pre-populated divert procedural information for their F100 destinations.
Network Aviation amended their Fokker Aircraft F100 Flight Crew Operating Manual arrival briefing procedure to raise awareness around fuel status and increase flight crew coordination. Where alternate fuel requirements were previously only briefed ‘if applicable’, it is now mandatory for all arrival briefings to include the minimum fuel required to divert to an alternate.
Network Aviation amended their flight plan format to include an alternate summaries section at the top of each flight plan for 2 alternate aerodromes. While this was previously provided for flight plans that legally required an alternate aerodrome, it is now provided for all flight plans.