AD 2021-03-04

final rule
Data completeness: 80%

Airworthiness Directives; Airbus Helicopters Deutschland GmbH Helicopters

AD Number
2021-03-04
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. FAA-2020-1037
FR Citation
86 FR 10449

Applicability

TypeManufacturerModelDetails
aircraft Airbus Helicopters Deutschland GmbH Airworthiness Directives; Airbus Helicopters Deutschland GmbH Helicopters

Unsafe Condition

Failure of an affected Ti-bolt installed in a critical location, possibly resulting in reduced control of the helicopter.

AI-generated summary from the source AD text. Verify against the official source before acting.

Required Actions

Remove any Ti-bolt identified in paragraph (a) of this AD, located on the forward tail rotor drive shaft, from service. Within 50 hours time-in-service or 3 months, whichever occurs first.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

Within 50 hours time-in-service or 3 months, whichever occurs first

AI-generated summary from the source AD text. Verify against the official source before acting.

Affected Aircraft

Airbus Helicopters Deutschland GmbH Model EC135P1, EC135P2, EC135P2+, EC135P3, EC135T1, EC135T2, EC135T2+, and EC135T3 helicopters, certificated in any category, with a Titanium (Ti) bolt part number L535M2001203 marked with manufacturer monogram ``D'' or with an illegible manufacturer monogram installed on the forward tail rotor drive shaft.

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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