T-38C Lost Both Horizontal Stabilizers Before Crashing in Alabama, Investigation Finds

A U.S. Air Force Accident Investigation Board determined that maintenance errors allowed a horizontal stabilizer actuator pin to become loose, triggering aerodynamic flutter that tore both stabilizers from the T-38C that crashed on May 12, 2026.

The U.S. Air Force has released on Oct. 30, 2026, the results of its investigation into the May 12, 2026, crash of a T-38C Talon II assigned to Columbus Air Force Base, Mississippi. As we reported at the time, the aircraft crashed in rural Lamar County, Alabama, near the Mississippi border, after both pilots were able to eject safely.

The Accident Investigation Board (AIB) found the chain of events that ultimately led to the crash started from a maintenance error. Because of the failure to secure and verify the connection, the left actuator’s aft attach pin backed out during flight, introducing mechanical play that catastrophically overloaded the torque tube and separated the horizontal stabilizer from the aircraft, says the AIB report.

The investigation also identified multiple maintenance compliance failures that allowed the aircraft to return to flight without a required inspection.

The training flight and the mishap

The T-38C involved, serial number 66-4362 assigned to the 49th Fighter Training Squadron, was flying a fighter bomber fundamentals training sortie as part of the Introduction to Fighter Fundamentals (IFF) course. The crew included an instructor and an international student pilot, whose nationality was not disclosed.

The aircraft was part of a larger four-ship formation, flying in the number 2 position. The first phase of the flight went smoothly, with the first issues emerging during the G-warmup maneuver.

A T-38C Talon of the U.S. Air Force. | Source: U.S. Air Force photo by MSgt Christopher Boitz This maneuver, which usually includes two consecutive turns with increasing number of Gs, is used to prepare the pilots before they are subjected to high G-loads during training flights. In this case, the first was a 4G, 180-degree turn to the left.

During the maneuver, the crew “heard a loud sound” and the aircraft started to shudder, followed by strong vibrations and negative Gs. The instructor immediately took control to stabilize the aircraft.

However, the T-38 “produced a second, louder noise,” with substantially increased vibrations and an uncommanded pitch downwards with a spike in negative G. The instructor tried to use a full aft stick input to raise the nose back to level flight, without any effect.

Considered the decreasing altitude, high airspeed, and inability to control the jet, the instructor gave the order to eject. “Severe aerodynamic forces caused the horizontal stabilizers to separate from the main fuselage, which then tumbled through the air,” said the report, and the T-38 “struck the ground in a flat, inverted (upside down) attitude, splitting in half upon impact.”

A maintenance error

The investigation traced the accident to maintenance work performed on the aircraft several weeks before the crash. In April 2026, the T-38C had previously been impounded following an uncommanded 130-degree roll to the right.

A U.S. Air Force T-38C Talon assigned to the 49th Flying Training Squadron taxies to the runway on Columbus Air Force Base, Miss., Oct. 10, 2025. | Source: U.S. Air Force photo by Airman 1st Class Kaylie Dille During troubleshooting, maintenance personnel removed and reinstalled the aft fuselage, also known as the boattail, and found that the travel measurements on the right horizontal stabilizer’s trailing edge were outside the prescribed limits. After performing a backlash check on the right stabilizer, maintainers did not annotate defects.

On the other side, the left horizontal stabilizer actuator servo arm was written-up for “excessive play.” The actuator was removed, repaired, and reinstalled, however the required backlash check was not annotated in the maintenance logs.

In the end, the report says the right horizontal stabilizer rigging was accomplished and checked, correcting the out-of-limit travel, while the horizontal left stabilizer travel, system preload, and primary flight control checks were signed off as “good.” The T-38 was released from impound and completed a functional check flight on May 1 before returning operational.

Investigators determined that the missing backlash check was a critical omission. The contractors who signed off the actuator installation, the work center supervisor, the Impoundment Official, Quality Assurance personnel and the Impoundment Release Authority all had the opportunity and capability to identify the missing inspection, but failed to do so.

The horizontal stabilizers

The horizontal stabilizers control the T-38’s pitch. Their actuators work against each other to apply tension to the torque tubes, helping prevent unwanted movement and aerodynamic flutter.

An Air Force T-38 Talon taxis to an aircraft shelter at the Fleet Readiness Center Southeast (FRCSE). | Source: U.S. Navy photo by Toiete Jackson Investigators determined that an improperly secured pin in the left horizontal stabilizer actuator allowed excessive movement in the system. The resulting play, or backlash, disrupted the tension in the torque tubes and allowed aerodynamic flutter to develop and increase until the horizontal stabilizers separated from the aircraft.

“The left torque tube snapped mid-air, causing both surfaces to depart the aircraft and land in separate geographic locations,” said the AIB report. “The left actuator and supporting structure tore free of the fuselage in flight, while the right actuator remained attached to the lower longeron support fitting.”

The Air Force Research Laboratory and the Southwest Research Institute examined recovered components and confirmed one-time overload from axial and bending stresses with no fatigue present.

“The torque tube failure was secondary,” described the report. “The loss of system rigidity resulting from a minor mechanical displacement (0.1”) at the left actuator’s aft attachment point was all that was required for catastrophic failure.”

The pilots

The Accident Investigation Board found no evidence that the crew contributed to the mishap. The instructor pilot attempted to regain control after the aircraft began experiencing severe vibrations and an uncommanded pitch-down movement.

However, the separation of the horizontal stabilizers left the aircraft uncontrollable, leaving the crew without other options. Both pilots successfully ejected, although they had difficulties when maneuvering their parachutes, and both became caught in trees..

The instructor sustained a minor laceration to the face, but landed on his feet, according to the report. On the other hand, the student pilot “was suspended in a 1-meter-high bush, and had to drop approximately 12 inches to the ground,” and later “had difficulty walking due to severe pain in his left calf, causing him to limp.