Airworthiness directives › 2026-03-02
AD 2026-03-02 Airworthiness Directives; Airbus Helicopters Deutschland GmbH (AHD) Helicopters
Models named: EC135P3, EC135T3. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Airbus Helicopters Deutschland GmbH (AHD) Model EC135P1, EC135P2, EC135P2+, EC135P3, EC135T1, EC135T2, EC135T2+, EC135T3, and EC635T2+ helicopters, certificated in any category with mounting ring frame X9227, part number (P/N) L535H2120301, L535H2120303, or L535H2120304, installed, except those with frame reinforcement P/N L535H2100201 or L535H2100202 installed. Note 1 to paragraph (c): Helicopters with an EC135P3H designation are Model EC135P3 helicopters. Helicopters with EC135T3H designation are Model EC135T3 helicopters.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Except as specified in paragraphs (h) and (i) of this AD: Perform all required actions within the compliance times specified in, and in accordance with, European Union Aviation Safety Agency (EASA) AD 2025-0174R1, dated September 22, 2025 (EASA AD 2025-0174R1).
Unsafe condition
This AD was prompted by fatigue crack found on the ring frame ring that attaches the fuselage tail boom structure to the tail rotor housing. The FAA is issuing this AD to detect and address fatigue cracking in the ring frame. The unsafe condition, if not addressed, could result in loss of a tail rotor and consequent loss of control of the helicopter.
Affected ADs
This AD replaces AD 2014-13-09, Amendment 39-17885 (79 FR 41095, July 15, 2014).
Read the original on the Federal Register →
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1