Definition
Any condition related to the aircraft itself that could contribute to an unsafe outcome on a particular flight, including mechanical airworthiness, equipment limitations, fuel state, performance capability, and suitability for the planned operation.
Plain English
A risk that comes from the aircraft you are flying — its condition, its equipment, or whether it is the right machine for the job.
Context Anchor
Used in risk planning with the PAVE checklist, where the pilot looks separately at the Pilot, Aircraft, enVironment, and External pressures before deciding whether and how to fly.
Derivation
‘Hazard’ comes from the Old French ‘hasard’, meaning a game of chance or risk. In aviation risk management, a hazard is not the accident itself but a condition that could lead to one — anything about the aircraft that introduces uncertainty into the flight.
Why Pilots Care
Recognizing aircraft hazards before flight allows the pilot to decide whether to proceed, delay, or choose a different aircraft, directly reducing accident risk from mechanical or performance issues.
Intuition Check
Do not read “aircraft hazard” as meaning the airplane is automatically unsafe. It means there is something about the aircraft that needs attention because it could raise the risk of the flight.
Example Sentence 1
During preflight planning, the pilot identified an aircraft hazard: the airplane lacked anti-ice equipment, making the forecast icing conditions a no-go.
Example Sentence 2
Low fuel quantity was listed as an aircraft hazard that made the planned cross-country flight too risky.