FAA has finalised an airworthiness directive on the Embraer Phenom 300. The final rule was published in the Federal Register on 1 June 2026. It becomes effective on 6 July 2026.
The directive applies to certain Embraer S.A. Model EMB-505 airplanes. That type designation covers the Phenom 300, Phenom 300E and Phenom 300MED. The rule was prompted by ANAC AD 2025-04-01, issued on 15 April 2025 by Brazil's civil aviation authority. ANAC is the state of design for the type.
The AD follows reports that some Phenom 300 airplanes may have invalid horizontal-stabiliser backlash test results, due to incorrect procedures during production or maintenance. The FAA states that excessive backlash could result in an aeroelastic phenomenon. That phenomenon could expose surrounding structure and systems to unacceptable vibration levels. The condition, if not addressed, could result in reduced controllability of the airplane.
The mandated action is an inspection of left-hand and right-hand horizontal-stabiliser backlash. Operators must then replace, as applicable, the LH and RH hinge-point attachment parts. They must also replace the LH or RH pitch-trim actuator rod-end attachment parts, and the pitch-trim actuator itself, where measurements require it.
For Phenom 300 owners and Part 91 flight departments, the AD sets a compliance window tied to the 6 July effective date. The published rule lists the affected serial numbers, the threshold and grace periods for the inspection, and approved methods of compliance. Owners should confirm with their Embraer service centre whether their aircraft is in scope, and schedule the work before the deadline.
Source: FAA AD 2026-10854, Federal Register, 1 June 2026; ANAC AD 2025-04-01, 15 April 2025.