The FAA adopted its emergency Gulfstream G700 and G800 engine-mount AD. Federal Register publication came on 2 July 2026. The rule takes effect on 17 July 2026.
The directive was prompted by a broken hollow pin cap on the right-side engine aft thrust strut mount interface of one aircraft. A missing sleeve bushing caused the failure. A subsequent audit found a second aircraft that failed a gap check at the right-side forward thrust strut mount interface. The FAA stated the condition could result in in-flight separation of the engine and loss of control.
The rule requires a visual inspection of the upper surface of the engine mount at the hollow pin head interface on both engines. Operators must also inspect the forward and aft thrust strut mount hardware to confirm proper installation of the sleeve bushing, nut, washers and cotter pins. Applicable corrective actions follow.
The AD covers Gulfstream G700 airframes with serial numbers 87002 through 87049, plus 87053 and 87076. It also covers G800 airframes with serial numbers 88002 through 88014. The applicability lists 50 G700 and 13 G800 airframes by serial number. The FAA had already issued the emergency AD 2026-13-51 to all known US owners and operators on 18 June 2026. The 2 July final rule formalises the same requirements.
Comments are open until 17 August 2026, but the requirements are already in force via the emergency issuance. Operators of affected aircraft should contact Gulfstream to schedule the inspection ahead of the 17 July effective date.
Source: FAA final rule AD 2026-13-51, Federal Register document 2026-13476, 2 July 2026.