EASA AD CF-2017-37: Flight Controls — Restriction of directional control pedal movement | RegNotify

Airworthiness DirectiveEASA AD CF-2017-37

Flight Controls — Restriction of directional control pedal movement

Published: Dec 21, 2017
Effective: Jan 2, 2018
Deadline: Jan 27, 2018

AI-generated summary of the official EASA document. Verify against the PDF before acting.

What to do

Operators must modify the affected litter kits within 25 hours air time from the effective date of January 2, 2018, following the specified Airbus Helicopters service bulletin. Installation of non-modified litter kits is prohibited after the effective date. Compliance can also be achieved by installing Transport Canada STC SH94-29 issue 10 or later, or STC SH96-62 issue 6 or later.

Summary

Canadian Airworthiness Directive CF-2017-37 addresses a restriction of directional control pedal movement caused by certain litter kits installed on Airbus Helicopters AS350 and AS355 models. The affected litter kits include part numbers 350-200034, 350-200194 (left-hand), and 350-200144 (right-hand). This directive applies to multiple Supplemental Type Certificates issued by Transport Canada, the FAA, and other international authorities.

What changed

This new Airworthiness Directive introduces a mandatory modification to the affected litter kits to prevent the lanyards from restricting pedal movement. It prohibits installation of these litter kits unless they are modified according to Airbus Helicopters Canada Limited service bulletin SB-AHCA-128 or later approved revisions. Certain Transport Canada STC issues also satisfy the AD requirements.

Why it matters

This directive is critical for aviation professionals because uncorrected restrictions on directional control pedals can impair helicopter handling and safety during flight. Operators and maintenance organizations must ensure compliance to avoid control difficulties that could lead to accidents. Compliance teams need to track affected aircraft and STCs to maintain airworthiness and regulatory adherence.

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