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F-NI: Fire/smoke (non-impact) - Fire or smoke in or on the aircraft, in flight or on the ground, which is not the result of impact.
- Includes fire due to a combustive explosion from an accidental ignition source.
- Includes fire and smoke from system/component failures/malfunctions in the cockpit, passenger cabin, or cargo area.
- Non-combustive explosions such as tire burst and pressure bulkhead failures are coded under System/Component Failure - Non-Powerplant (SCF-NP).
- Fire/Smoke resulting from an accident impact is coded under Fire/Smoke (post-impact) (F-POST).