AD applicability & due limits

Check the requirement details

Use the aircraft and requirement information displayed in FSHANGAR. A directive mentioning a broad aircraft family does not necessarily apply to every aircraft in that family.

Applicability

Real-world directives can use model, variant, component or configuration conditions. The product must represent applicability before assigning a requirement to an aircraft. Missing real-world identifiers can limit the fidelity of the simulation.

Timing

• FH: a flight-hour-based deadline.
• FC: a cycle-based deadline.
• Calendar: a date or elapsed interval.
• Recurrence: a requirement that becomes due again after compliance.

Complex directives

Some directives have multiple applicability branches and timing rules. Do not infer an unsupported deadline from the title alone. Follow the requirement's modeled timing and any limitation disclosed by the product.