AD 2021-10-14
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
aging of the elastomeric material in a tension torsion strap (TT-strap) could affect the structural characteristics of the TT-strap, leading to premature failure of a TT-strap, resulting in loss of control of the helicopter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
replace certain TT-straps with serviceable parts and implementation of a new storage life limit for TT-straps, as specified in an EASA AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 flight hours
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Affected Aircraft
Airbus Helicopters Deutschland GmbH Model BO-105A, BO-105C, BO-105S, and BO-105LS A-3 helicopters, certificated in any category, equipped with a tension torsion strap (TT-strap) as identified in EASA AD 2019-0024.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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