AD/F28/91 - Engine Controls - Fuel Fire Shut-off Valve Actuator - CANCELLED

This document cancels an Airworthiness Directive (AD)—a mandatory safety instruction issued by the Civil Aviation Safety Authority that aircraft operators must follow.

What it does:

• Formally cancels directive AD/F28/91, which previously required maintenance or inspection of fuel fire shut-off valve actuators on Fokker F28 aeroplanes.
• The cancellation fixes a registration error: the original directive was mistakenly applied to the entire F28 series when it should only have covered specific models (the F28 70 and 100 series).
• A corrected version of the directive has been separately issued for the appropriate aircraft models.

Who it affects:

• Operators, pilots, and maintenance engineers responsible for Fokker F28 aircraft who were working to comply with the cancelled directive.

Practical effect:

• Compliance with the cancelled AD/F28/91 is no longer required; affected parties should instead follow the replacement directive applicable to their specific F28 model.