AD 2020-22-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | Helicopters Deutschland GmbH Model EC135P1 | Airworthiness Directives; Airbus Helicopters Deutschland GmbH |
| aircraft | Aviat | Various | Airworthiness Directives; Airbus Helicopters Deutschland GmbH |
Unsafe Condition
Improper heat treatment of titanium (Ti)-bolts installed on the forward and aft tail rotor drive shafts, resulting in a broken Ti-bolt.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
An inspection to determine if Ti-bolts installed on the forward and aft tail rotor drive shafts are affected parts, and replacement of affected parts, as specified in EASA AD 2020-0099.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight
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Affected Aircraft
All Airbus Helicopters Deutschland GmbH Model EC135P1, EC135P2, EC135P2+, EC135P3, EC135T1, EC135T2, EC135T2+, EC135T3, EC635P2+, EC635P3, EC635T1, EC635T2+, and EC635T3 helicopters.
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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