PATRICK SPACE FORCE BASE, Fla. -- 920th Maintenance Squadron Airmen conducted a letter B isochronal inspection for a 39th Rescue Squadron HC-130J Combat King II aircraft at Patrick Space Force Base, Florida, April 6, 2025.
Isochronal inspections are increasingly in-depth throughout the three-letter cycle and allow maintainers from varying shops and specialties to strip down the aircraft to identify any deficiencies, structural issues, or other repairs needed. To ensure longevity of the fleet, the Air Force's C-130 airframes are required to undergo an isochronal inspection every 540 days.
The 920th RQW is AFRC’s only combat search and rescue wing, whose mission is to plan, lead and conduct military rescue operations and missions to deny competitors and adversaries exploitation of isolated personnel.