The report, titled “US Aircraft Combat Damage in Operation Epic Fury: Considerations for Congress,” provides a rare official accounting of the damage inflicted on US military forces, including some of Washington’s most advanced and expensive aircraft.

The Congressional Research Service said the list was compiled from media reports, statements by the US Department of Defense and Central Command, and Defense Department inspector general reports.

The report cautioned that the figure could change because some information remains classified, military operations are continuing and responsibility for some incidents remains difficult to establish.

Some damaged aircraft may also have returned to service following repairs.

Among the fighter losses are 12 F-15E aircraft.

Three F-15Es were destroyed by US friendly fire over Kuwait on March 2, while another was shot down over Iran on April 5.

Eight additional F-15Es sustained damage during Iranian strikes on the Muwaffaq Salti Air Base in Jordan on Sept. 9 and 10, although the damaged aircraft were later returned to service.

The losses also include an F-35A, one of the most advanced and expensive fighter aircraft in the US arsenal, which was damaged by ground fire in Iran on March 19.

Two A-10 attack aircraft are also listed among the losses.

US Joint Chiefs Chairman Gen. Dan Caine said on April 6 that one A-10 was destroyed after being hit by gunfire and crashed, while another was reportedly severely damaged during Iran’s Sept. 9-10 strikes on the US-linked base in Jordan.

Beyond fighter aircraft, Iranian retaliatory attacks also inflicted losses on the logistical and surveillance infrastructure supporting US military operations.

Seven KC-135 aerial refueling aircraft are included in the Congressional Research Service’s list.

On March 12, US Central Command reported that two KC-135 aircraft were involved in incidents, with one crashing in Iraq and killing all six members of its crew, while the other was forced to make an emergency landing.

Two days later, another report said five KC-135 aircraft had been damaged during an Iranian attack on the US aircraft at Prince Sultan Air Base in Saudi Arabia.

An E-3 Sentry surveillance aircraft was also damaged at the same base.

A March 28 report said the aircraft sustained damage, while a later report on Sept. 15 said it had been directly targeted.

Two MC-130J special operations aircraft were also destroyed on April 5 while participating in a search-and-rescue operation for an F-15E shot down over Iran, according to the report.

The most substantial losses have been suffered by the US drone fleet.

At least 45 MQ-9 Reaper drones were lost during US operations against Iran, according to a report citing three US officials on Aug. 13.

The MQ-9 is widely used by the US military for surveillance and missile strikes and is estimated to cost between $30 million and $50 million per aircraft.

The losses reduced the US MQ-9 fleet to 135 aircraft, according to an Air Force general who told the Senate that the service is supposed to maintain at least 189 deployable Reapers.

Other US unmanned aircraft were also lost.

One MQ-4C Triton was lost in a crash, while three MQ-1 drones were also lost.

US Central Command acknowledged on May 31 that Iran had shot down one MQ-1, while a Sept. 17 report citing US officials said Iran had downed at least two more in the preceding days.

The damage extended to US helicopter forces.

The Congressional Research Service lists one AH-64 Apache, four AH-6 Little Birds, one MH-60 Sea Hawk and one HH-60W search-and-rescue helicopter among the damaged or destroyed aircraft.

According to a Defense Department inspector general report dated Sept. 14, the AH-64 was shot down over the Strait of Hormuz, while four AH-6 helicopters were destroyed by US forces during a rescue operation.

The same report said an MH-60 Sea Hawk crashed in the Arabian Sea.

Gen. Dan Caine previously said an HH-60W search-and-rescue helicopter was damaged during an operation to locate the crew of an F-15E shot down over Iran.

The Congressional Research Service’s accounting highlights the scale of the military losses suffered by Washington during its aggression against Iran, spanning advanced fighter jets, aerial refueling aircraft, surveillance platforms, special operations aircraft, drones and helicopters.

The documented losses comprise 12 F-15E Strike Eagles, one F-35A Lightning II, two A-10 attack aircraft, seven KC-135 Stratotankers, one E-3 Sentry, two MC-130J special operations aircraft, 45 MQ-9 Reapers, one MQ-4C Triton, three MQ-1 drones, one AH-64 Apache, four AH-6 Little Birds, one MH-60 Sea Hawk and one HH-60W search-and-rescue helicopter.