A brief but significant communications lapse between Army and civilian air traffic controllers led to two commercial jets aborting their landings at Washington, D.C.'s Reagan National Airport earlier this month, according to U.S. Army officials.

The incident, which took place on May 1, has further heightened concerns about aviation safety in the already congested airspace around the nation’s capital.

Military air traffic controllers lost contact with a U.S. Army Black Hawk helicopter for approximately 20 seconds as it approached the Pentagon, causing confusion among civilian air traffic controllers and ultimately leading to the diversion of two incoming flights.

The Army disclosed these details in an exclusive interview with The Associated Press.

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This event comes just months after a tragic midair collision in January involving an Army helicopter and a passenger jet, which resulted in the deaths of 67 people.

That crash spurred the Federal Aviation Administration (FAA) to ban helicopter traffic from the specific route where the accident occurred.

The May 1 incident now raises fresh questions about whether systemic issues in communication and radar coordination between military and civilian aviation sectors are being adequately addressed.

Brigadier General Matthew Braman, who oversees Army aviation, explained that the communication breakdown happened due to a temporary control tower antenna, which was not positioned effectively to maintain contact with the Black Hawk during its low-altitude approach.

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“The controllers lost contact with the Black Hawk because a temporary control tower antenna was not set up in a location where it would be able to maintain contact with the helicopter as it flew low and rounded the Pentagon to land,” Braman said.

That antenna has since been relocated to the roof of the Pentagon to avoid similar issues in the future.

Further complicating the situation, civilian air traffic controllers at Reagan National reportedly struggled to pinpoint the exact location of the Black Hawk.

Despite the helicopter transmitting ADSB-Out data that should have clearly displayed its position, FAA personnel later told Braman that data from multiple radar feeds and sensors was inconsistent — in some cases, deviating by as much as three-quarters of a mile.

“It certainly led to confusion of air traffic control of where they were,” Braman acknowledged.

The FAA has not confirmed whether the inconsistencies were due to issues with its own equipment, citing the ongoing investigation by the National Transportation Safety Board (NTSB).

However, Transportation Secretary Sean Duffy has been vocal about the urgent need to modernize the agency’s air traffic control systems, particularly following other recent failures affecting major U.S. airports, including Newark Liberty International.

Initial FAA reports suggested the Army helicopter may have been flying a “scenic route,” which could have contributed to the incident.

However, the Army has since refuted that claim. The ADSB-Out data, which was shared with the Associated Press, shows the Black Hawk following its approved flight path precisely — up the I-395 highway corridor, known in aviation as Route 5, and then looping around the Pentagon.

The confusion surrounding the helicopter’s approach prompted airport air traffic controllers to intervene.

According to Braman, “FAA air traffic controllers at the airport aborted the landing of a Delta Air Lines Airbus A319 during the Black Hawk’s initial flight toward the Pentagon because they realized both aircraft would be nearing the Pentagon around the same time.”

The 20-second loss of communication also meant the Black Hawk could not receive landing clearance from the Pentagon’s tower, forcing it to circle the building for a second approach.

During that second pass, uncertainty over the helicopter’s position led to the FAA aborting the landing of a second aircraft — a Republic Airways Embraer E170.

The incident has triggered a temporary pause of all Army helicopter flights into and out of the Pentagon while the Army works closely with the FAA to address the underlying safety concerns.

While no one was harmed in the May 1 incident, it underscores the critical importance of seamless coordination between military and civilian air traffic operations, especially in high-traffic, high-security zones like Washington, D.C.

As investigations continue, the spotlight remains on the FAA's aging infrastructure and the need for real-time, reliable coordination tools that can bridge the communication gap between government and civilian aviation authorities.

Until those upgrades are realized, safety concerns in the D.C. airspace will likely remain front and center.

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