AD 2023-26-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Pilatus | Aircraft Ltd | Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes |
| aircraft | Aviat | Various | Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes |
Unsafe Condition
The titanium threaded bolts at the forward end of the short rudder trim tab actuating rods could be subject to unexpectedly high oscillating loads due to aerodynamic forces acting on the rudder trim tab, which could lead to failure of the bolt with consequent damage to the rudder and rudder trim tab, resulting in loss of rudder control and reduced or loss of control of the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Periodic replacement of affected titanium threaded bolts, a one-time inspection of the rudder mass balance arm and other elements of the rudder trim tab installation for correct attachment, damage, cracks, deformation, surface finish, and corrosion on any surrounding parts, and, depending on findings, accomplishment of applicable corrective actions, as specified in EASA Emergency AD 2023-0219-E.
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Compliance Time
Within 10 hours time-in-service (TIS) after the effective date of this AD for airplanes that have already accumulated more than 300 hours TIS.
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Affected Aircraft
Pilatus Model PC-24 airplanes, with titanium threaded bolts, part number (P/N) 527.20.24.489, installed on the rudder trim tab short control rods.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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