Definition
Pilots who have completed the training, testing, and certification required to fly under Instrument Flight Rules, meaning they are qualified to operate an aircraft solely by reference to instruments and to navigate within the air traffic control system in clouds, low visibility, or other conditions where outside visual references are not reliable.
Plain English
Pilots who have been trained and certified to fly using only the cockpit instruments, without needing to see the ground or horizon outside.
Context Anchor
Seen in instrument procedure discussions where the FAA is describing who the procedures are designed for and what level of crew capability is assumed.
Derivation
‘IFR’ stands for Instrument Flight Rules — the set of FAA rules that govern flight conducted primarily by instruments rather than by looking outside. A ‘flight crew’ is the pilot or pilots operating the aircraft. So the phrase simply names pilots whose training has prepared them to fly under those rules.
Why Pilots Care
These crews can continue safe operations in clouds, fog, or low visibility where visual flight would be impossible or illegal.
Intuition Check
Do not read “IFR-trained” as simply “has flown in clouds before.” It means trained and qualified to operate under Instrument Flight Rules using instruments, clearances, and approved procedures.
Example Sentence 1
The procedure assumes IFR-trained flight crews who can interpret the approach chart and fly the published missed approach without delay.
Example Sentence 2
Air carriers assign IFR-trained flight crews to all scheduled flights to ensure they can handle changing weather conditions.