WASHINGTON — An American military refueling plane taking part in the operation against Iran crashed in Iraq and rescue efforts were underway, U.S. Central Command said Thursday.
The U.S. Central Command said four of the six crewmembers on board the crashed KC-135 have been confirmed dead and that rescue efforts are continuing. It said the circumstances of the crash are under investigation but that the loss of the aircraft was “not due to hostile or friendly fire.”
A U.S. Air Force KC-135 Stratotanker refueling tanker aircraft takes off Aug. 30, 2023, from the Kadena Air Base airfield in Kadena Town, Japan.
U.S. Central Command, which oversees the Middle East, said two aircraft were involved; one landed safely and the other went down in western Iraq.
A second U.S. official, who similarly spoke on condition of anonymity, said the other plane involved also was a KC-135 tanker.
"More information will be made available as the situation develops," Central Command said. "We ask for continued patience to gather additional details and provide clarity for the families of service members."
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The tanker is the fourth publicly acknowledged aircraft to crash as part of the U.S. military's operations against Iran.
A North American Aerospace Defense Command F-16 fighter refuels Feb. 19 from a KC-135 Stratotanker over western Alaska.
Last week, three American fighter jets were mistakenly downed by friendly Kuwaiti fire.
All six crew members safely ejected from the F-15E Strike Eagles and were in stable condition after being recovered, the U.S. said.
Seven American troops have been killed in combat during the Iran war so far, while about 140 U.S. service members have been injured, including eight severely, the Pentagon said earlier this week.
Both President Donald Trump and Defense Secretary Pete Hegseth warned that the Iran war would likely claim more American lives before it ends.
Six of the fallen service members were killed when an Iranian drone struck an operations center at a civilian port in Kuwait. They were in the Army Reserve and worked in logistics, keeping troops supplied with food and equipment.
They died one day after the U.S. and Israel launched the military campaign against Iran on Feb. 28. The Islamic Republic has retaliated with missiles and drones against Israel and several Gulf Arab states that host U.S. armed forces.
The seventh American service member died after being wounded during a March 1 attack on the Prince Sultan Air Base, Saudi Arabia.
Trump joined grieving families for a dignified transfer at Dover Air Force Base when the remains of the first six soldiers were returned to the United States. Vice President JD Vance, Hegseth and others saluted the seventh flag-draped transfer case as it arrived this week at Dover.
The KC-135 tanker involved in the latest crash is based on the same design as the Boeing 707 airliner and entered military service more than 60 years ago. Like other long-serving aircraft, the planes underwent various retrofits and upgrades over the years.
The KC-135 tankers typically have a crew of three. It's not immediately clear what role the extra crew members were serving aboard the flight.
According to a report from the Congressional Research Service, the Air Force last year had a total of 376 KC-135s, including 151 on active duty, 163 in the Air National Guard and 62 in the Air Force Reserve.
Photos from Middle East in the 2nd week of the Iran war
U.S. embassy personnel inspect the damage caused by a bombing in Baghdad, Saturday, March 14, 2026. (AP Photo/Hadi Mizban)
A woman sits on rubble across from a residential building damaged last Sunday during the U.S.-Israeli air campaign in Tehran, Iran, Thursday, March 12, 2026. (AP Photo/Vahid Salemi)
Residents inspect damage which according to them was caused by fragments of an intercepted Iranian rocket that landed on a Palestinian three story building, in West Bank town of Biddya, west of Salfit, Wednesday, March 11, 2026. (AP Photo/Majdi Mohammed)
Smoke rise from an Israeli airstrike in Dahiyeh, Beirut's southern suburbs, at sunset in Beirut, Lebanon, Tuesday, March 10, 2026. (AP Photo/Bilal Hussein)
A boy runs inside cement pipe turned into a bomb shelter as air raid sirens warn of incoming Iranian missile strike in Michmoret, Israel, Tuesday, March 10, 2026. (AP Photo/Ariel Schalit)
Smoke rise from an Israeli airstrike in Dahiyeh, Beirut's southern suburbs, Monday, March 9, 2026. (AP Photo/Hassan Ammar)
A man passes in front of a destroyed building that housed a branch of Al-Qard Al-Hassan, a non-bank financial institution run by Hezbollah, which was hit by an Israeli airstrike in Dahiyeh, Beirut's southern suburbs, Lebanon, Tuesday, March 10, 2026. (AP Photo/Hussein Malla)
People walk past closed shops at the nearly empty traditional main bazaar in Tehran, Iran, Tuesday, March 10, 2026. (AP Photo/Vahid Salemi)
Motorbikes drive past a billboard depicting Iran’s late Supreme Leader Ayatollah Ali Khamenei, center, handing the country’s flag to his son and successor Ayatollah Mojtaba Khamenei, right, as the late revolutionary founder Ayatollah Ruhollah Khomeini stands at left, in a square in downtown Tehran, Iran, Tuesday, March 10, 2026. (AP Photo/Vahid Salemi)
Flames rise after an Israeli airstrike in Dahiyeh Beirut's southern suburbs, Monday, March 9, 2026. (AP Photo/Hassan Ammar)
A man holds a poster of Ayatollah Mojtaba Khamenei, the successor to his late father Ayatollah Ali Khamenei as supreme leader, during a rally to support him in Tehran, Iran, Monday, March 9, 2026. (AP Photo/Vahid Salemi)
People wave Iranian flags as they hold posters of the late Supreme Leader Ayatollah Ali Khamenei, showing him at different ages, during a rally to support his son Ayatollah Mojtaba Khamenei, who succeeds his father as the new supreme leader, in Tehran, Iran, Monday, March 9, 2026. (AP Photo/Vahid Salemi)
People gather in a rally to support Ayatollah Mojtaba Khamenei, the successor to his late father Ayatollah Ali Khamenei as supreme leader, in Tehran, Iran, Monday, March 9, 2026. (AP Photo/Vahid Salemi)
The coffin of Mehdi Hosseini, a man killed in a U.S.-Israeli strike, is carried for burial at Behesht-e Zahra cemetery in Tehran, Iran, Monday, March 9, 2026. (AP Photo/Vahid Salemi)
A girl displaced by Israeli airstrikes, looks on at a school used as a shelter in Beirut, Lebanon, Monday, March 9, 2026. (AP Photo/Hassan Ammar)
Relatives mourn over the flag draped coffin of Mehdi Hosseini who was killed in a U.S.-Israeli strike during his burial ceremony at Behesht-e Zahra cemetery in Tehran, Iran, Monday, March 9, 2026. (AP Photo/Vahid Salemi)
Israeli security forces and ZAKA rescue service members carry the body of a man killed in an Iranian missile strike in Yehud, Israel, Monday, March 9, 2026. (AP Photo/Ohad Zwigenberg)
Two women from the Iranian Red Crescent Society stand as a thick plume of smoke from a U.S.-Israeli strike on an oil storage facility late Saturday rises in the sky in Tehran, Iran, Sunday, March 8, 2026. (AP Photo/Vahid Salemi)
A woman walks past a cordoned-off area damaged during an Iranian strike in Tel Aviv, Israel, Sunday, March 8, 2026. (AP Photo/Ohad Zwigenberg)
Mourners carry the bodies of Hezbollah fighters who were killed by Israeli airstrikes during their funeral procession in Khraibeh village, eastern Lebanon, Sunday, March 8, 2026. (AP Photo/Bilal Hussein)
Residents look on and take pictures as flames and smoke rise from an oil storage facility struck as attacks hit the city during the U.S.–Israeli military campaign in Tehran, Iran, Saturday, March 7, 2026. (Alireza Sotakbar/ISNA via AP)
Residents flee the site of an Israeli airstrike that hit an apartment building in the southern port city of Sidon, Lebanon, Friday, March 13, 2026. (AP Photo/Mohammed Zaatari)
A cleric chants slogans during the annual anti-Israeli Quds Day, or Jerusalem Day rally in support of Palestinians in Tehran, Iran, Friday, March 13, 2026. (AP Photo/Vahid Salemi)
People inspect the site of a destroyed branch of Al-Qard Al-Hassan, a non-bank financial institution run by Hezbollah, which was hit by an Israeli airstrike in central Beirut, Thursday, March 12, 2026. (AP Photo/Hussein Malla)
An Israeli army strike explodes next to a tent camp after residents were given a warning to evacuate before the strike in Gaza City, Wednesday, March 11, 2026. (AP Photo/Yousef Al Zanoun)
A woman gathers belongings from her family's home after it was damaged by a projectile launched from Lebanon, in Haniel, central Israel, Thursday, March 12, 2026. (AP Photo/Baz Ratner)
Israeli authorities inspect homes damaged by a projectile launched from Lebanon, in Haniel, central Israel, Thursday, March 12, 2026. (AP Photo/Baz Ratner)
Smoke and flames rise from buildings following an Israeli airstrike in Dahiyeh, Beirut's southern suburbs, Lebanon, Wednesday, March 11, 2026. (AP Photo/Bilal Hussein)
Rescue workers gather at the site where Israeli airstrikes hit apartments in Beirut, Lebanon, Wednesday, March 11, 2026. (AP Photo/Hussein Malla)
People take cover in an underground bomb shelter as air raid sirens warn of incoming Iranian missile strike, in Ramat Gan, Israel, Wednesday, March 11, 2026. (AP Photo/Oded Balilty)
Smoke rises from buildings following an Israeli airstrike in Dahiyeh, Beirut's southern suburbs, Lebanon, Wednesday, March 11, 2026. (AP Photo/Bilal Hussein)
A man walks along the shore as oil tankers and cargo ships line up in the Strait of Hormuz, as seen from Khor Fakkan, United Arab Emirates, Wednesday, March 11, 2026. (AP Photo/Altaf Qadri)
Residents look on and take pictures as flames and smoke rise from an oil storage facility struck as attacks hit the city during the U.S.–Israeli military campaign in Tehran, Iran, Saturday, March 7, 2026. (Alireza Sotakbar/ISNA via AP)
A man stands atop the rubble as smoke rises from a building destroyed in an Israeli airstrike in Dahiyeh, Beirut's southern suburbs, Lebanon, Saturday, March 14, 2026. (AP Photo/Hassan Ammar)
Rescue workers inspect an apartment damaged in an Israeli airstrike as thick smoke fills the building in the southern port city of Sidon, Lebanon, Saturday, March 14, 2026. (AP Photo/Mohammad Zaatari)
A girl walks inside a cement pipe turned into a bomb shelter as air raid sirens warn of incoming Iranian missile strike in Michmoret, Israel, Saturday, March 14, 2026. (AP Photo/Ariel Schalit)
Fire and plumes of smoke rise from an oil facility in Fujairah, United Arab Emirates, Saturday, March 14, 2026. (AP Photo/Altaf Qadri)

