Definition
A maintenance inspection and functional test of an aircraft component performed on a workbench in a shop, after the component has been removed from the aircraft. The check verifies that the unit meets its operating specifications and identifies whether repair, overhaul, or replacement is required.
Plain English
Taking a part off the aircraft and testing it on a workbench in the shop to see if it still works correctly and meets the required standards.
Context Anchor
Seen in aircraft maintenance, repair shop work, maintenance records, and troubleshooting discussions when a part may need to be tested outside the aircraft.
Derivation
From 'bench,' meaning a workshop table where mechanics inspect and test parts, plus 'check,' meaning a verification or test. The term simply describes where the check happens — on the bench, not on the aircraft.
Why Pilots Care
Confirms a removed component meets specifications before reinstallation, directly affecting continued airworthiness and flight safety.
Intuition Check
Do not read bench check as just a casual look at something. In this context, it means a maintenance test done with the part removed from the aircraft or tested on shop equipment.
Example Sentence 1
The vacuum pump was sent to the shop for a bench check after intermittent gauge readings.
Example Sentence 2
After the rough landing, the mechanic pulled the attitude indicator for a bench check to rule out internal damage.