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US Air Forces’ HH-60G fleet is experiencing maintenance challenges

Posted by Dylan Malyasov on


The U.S. Government Accountability Office (GAO) issued a report on 16 August regarding the aging HH-60G Pave Hawk fleet that is experiencing maintenance challenges.

According to the report, the aging HH-60G fleet has declined and maintenance challenges have increased, in part due to extensions beyond the designed service life of the helicopters.

About 68 percent of the 96-helicopter fleet were mission-capable as of fiscal year 2017, below the Air Force desired mission-capable rate of 75 percent. The fleet is experiencing maintenance challenges.

For example, the helicopters undergoing depot-level maintenance spent an average of 332 days undergoing such maintenance in fiscal year 2017 compared with 233 days in fiscal year 2007, more than a 40-percent increase.

Air Force officials attribute these challenges to the helicopters exceeding their initially planned service life. Currently, available helicopters across the fleet average about 7,100 flight hours about 18 percent more than their initial expected service life of 6,000 hours.

HH-60G Pave Hawk Inventory by Mission Type, as of May 2018

According to Air Force officials, the schedule for fielding the new Combat Rescue Helicopters generally prioritizes the replacement of helicopters with the highest number of flight hours; as a result, the active component is scheduled to begin receiving its new helicopters in fiscal year 2020, 6 years before the reserve
component.

In May 2018, the Air Force’s active component HH-60Gs averaged about 2,000 more flight hours per helicopter than the reserve component. Under the fielding schedule, the Air National Guard squadrons are to receive new Combat Rescue Helicopters beginning in 2027, at the end of the fielding period.

According to officials, in the meantime, to address aging helicopters in the Air National Guard, the Guard is scheduled to receive refurbished Army helicopters beginning in 2019. According to Air Force officials, these helicopters will have 3,000 or fewer flight hours and will be upgraded to the Air Force’s HH-60G
configuration.

Average Number of Flight Hours by HH-60G Helicopter Mission Type for Both Active and Reserve Components in May 2018

The Air Force officials explained that these helicopters are expected to increase reliability rates, reduce the need for unscheduled maintenance, and bridge the gap until the Air National Guard receives the new Combat Rescue Helicopters.

Due to the Air Force fielding schedule for the Combat Rescue Helicopters, the Air Force may face a challenge in supporting formal training for reserve component squadrons in fiscal year 2025 through 2028.

The training squadrons at Kirtland and Nellis Air Force Bases conduct all formal HH-60G training for both the active and reserve components. By 2025, these training squadrons are scheduled to be completely transitioned to the new Combat Rescue Helicopters.

: Locations, Components, and Inventories of HH-60G Pave Hawk Rescue Squadrons

Given the fielding schedule, the training squadrons will not have any legacy HH60Gs for formal training for the reserve component. However, some squadrons in the reserve component are scheduled to continue flying HH-60Gs until 2028 and will still need formal training. Air Force reserve component officials did not concur with the new Combat Rescue Helicopter fielding schedule.

Fielding Schedule for the Combat Rescue Helicopters, Fiscal Years 2019-2029

However, Air Force officials said that they plan to maintain their fielding schedule because changing it would require renegotiation of the contract, likely increase costs, and possibly delay delivery of the new helicopters. Air Force officials acknowledged this potential training issue and told GAO that the Air Force was considering options to address it; including retaining some legacy HH-60Gs at a training squadron to provide training during any gap period

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