The figure comes not from Tehran, but from the U.S. Congressional Research Service (CRS), making it particularly difficult to dismiss as Iranian wartime propaganda.
According to the updated CRS assessment, the losses since the beginning of the U.S.-Israeli military operation against Iran on February 28 include fighter aircraft, helicopters, refuelling aircraft, surveillance aircraft and drones. The MQ-9 Reaper alone accounts for 45 of the reported losses.
The list also includes some of America's most sophisticated aircraft.
Among them are 12 F-15E Strike Eagles, an F-35A Lightning II, an E-3 Sentry, seven KC-135 tankers and other military aircraft. The CRS says the total replacement or repair bill could reach between $1.9 billion and $3.3 billion.
Tehran’s message is becoming harder to ignore. For Iran, the significance goes beyond the number itself.
The Islamic Republic has spent years facing a vastly superior American military machine, operating under sanctions and severe restrictions on access to Western military technology.
Yet the war has demonstrated that possessing the world's most expensive military aircraft does not automatically guarantee an uncontested battlefield.
Iranian strikes have reached U.S. military facilities in the region, including Muwaffaq Salti Air Base in Jordan, where a U.S. official confirmed that an Iranian strike damaged an A-10 and caused light damage to roughly eight F-15s. Those F-15s were subsequently returned to service.
That detail matters.
An aircraft being damaged is not necessarily the same as an aircraft being permanently destroyed. But every damaged aircraft still represents maintenance, repairs, downtime, logistical pressure and resources that Washington must commit to keeping its forces operational.
.
And that is where Iran's military performance becomes strategically significant.
Tehran does not need to match Washington aircraft-for-aircraft to impose costs.
It only needs to demonstrate that American assets can be detected, targeted, damaged and forced out of service.
Iranian Foreign Minister Abbas Araghchi has seized on the revised figure, arguing that the real toll is even higher. That remains an Iranian claim rather than an independently verified figure.
But the underlying 81-aircraft figure is no longer merely a claim from Tehran.
It is contained in a U.S. congressional assessment.