Definition
A practical risk management checklist used by pilots to evaluate five key areas at critical points during a flight: the Plan (route, weather, fuel, regulations), the Plane (aircraft condition, fuel state, systems), the Pilot (fitness to fly, fatigue, currency), the Passengers (their condition, expectations, and influence on decisions), and the Programming (the avionics and automation set up for the flight). The check is typically applied at preflight, pretakeoff, cruise, predescent, and before approach and landing.
Plain English
A simple five-point check pilots run through at key moments in a flight to make sure nothing important has been overlooked. You ask yourself how each of the five things — the plan, the aircraft, you, your passengers, and your avionics setup — is doing right now, and adjust if any of them has changed.
Context Anchor
Used in flight planning and in-flight decision-making, especially at natural pause points such as before takeoff, during cruise, before descent, or when something changes.
Derivation
The name comes from the five checklist areas that begin with the letter P: Plan, Plane, Pilot, Passengers, and Programming. Remembering the repeated P helps the pilot quickly recall all five areas without needing a long written checklist.
Why Pilots Care
Systematic use of the 5 Ps reduces the chance of overlooking a factor that could lead to an accident or an unsafe decision.
Intuition Check
The 5 Ps is not just a memory trick for ground school. It is a practical check a pilot repeats as the flight changes.
Example Sentence 1
Before starting the descent, the pilot ran through the 5 Ps and realized the updated weather meant the original Plan needed to change.
Example Sentence 2
Mid-flight the pilot used the 5 Ps check and realized fatigue was affecting the pilot category, so they elected to divert.