Definition
A named section of an airplane checklist covering all items the pilot must complete after entering the cockpit but before activating the starter. It typically includes preflight briefings, seat and seatbelt adjustment, document checks, fuel selector position, electrical and avionics setup, circuit breakers, and confirmation that the area around the propeller is clear.
Plain English
It is the part of the checklist you work through once you are sitting in the airplane, before you actually start the engine. It makes sure the cockpit is set up correctly and the airplane is safe to start.
Context Anchor
Seen as a checklist section during preflight preparation, just before the pilot starts the engine.
Why Pilots Care
Confirms the aircraft is safe and properly set up before introducing engine power, reducing risk of damage or departure with unresolved issues.
Intuition Check
Do not read this as a casual time label. In an aviation checklist, “Before engine start” means a specific set of required checks must be completed before the engine is turned on.
Example Sentence 1
After strapping in and briefing his passenger, the pilot pulled out the checklist and worked through the Before Engine Start items.
Example Sentence 2
Before engine start, the pilot set the parking brake and adjusted the seat and harness.