AD 2021-07-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | Helicopters Deutschland GmbH | Airworthiness Directives; Airbus Helicopters Deutschland GmbH Helicopters |
| aircraft | Aviat | Various | Airworthiness Directives; Airbus Helicopters Deutschland GmbH Helicopters |
Unsafe Condition
uncommanded disengagement of the main rotor trim actuators during flight with the autopilot engaged and hands-off controls could result in high roll and pitch rates requiring pilot intervention within a reaction time below that required by current airworthiness standards.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
installing a cyclic stick weight compensation modification to correct this unsafe condition
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Compliance Time
Within 200 hours time-in-service
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Affected Aircraft
Airbus Helicopters Deutschland GmbH Model EC135P1, EC135P2, EC135P2+, EC135P3, EC135T1, EC135T2, EC135T2+, and EC135T3 helicopters, certificated in any category, with autopilot installed, having serial numbers (S/Ns) up to 1263 inclusive, 1265, and 2001 up to 2024 inclusive, but excluding S/N 2006, 2008, 2013, 2017, 2019, 2020, and 2022.
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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