AD 2021-10-24

final rule
Data completeness: 70%

Airworthiness Directives; Leonardo S.p.a. (Type Certificate Previously Held by Agusta S.p.A.) Helicopters

AD Number
2021-10-24
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. FAA-2021-0127
FR Citation
86 FR 26365

Applicability

TypeManufacturerModelDetails
aircraft Agusta S.p.A. Various Airworthiness Directives; Leonardo S.p.a. (Type Certificate Previously Held by Agusta S.p.A.) Helicopters

Unsafe Condition

play on a slider, which could result in loss of tail rotor pitch control and consequently loss of helicopter control.

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

Required Actions

inspect the slider for play within 25 hours time-in-service (TIS) after the effective date of this AD, and thereafter at intervals not to exceed 25 hours TIS, and replace the slider with a slider P/N 109-0130-11-7 with suffix "R" marked after the serial number if there is play greater than 2.3 millimeters (0.09 inch), and replace slider P/N 109-0130-11-7 with slider P/N 109-0130-11-7 with suffix "R" marked after the serial number within 800 hours TIS after the effective date of this AD, and installing slider P/N 109-0130-11-7 with suffix "R" marked after the serial number is a terminating action for the repetitive inspections required by paragraph (g)(1) of this AD.

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

Compliance Time

Within 25 hours TIS after the effective date of this AD, and thereafter at intervals not to exceed 25 hours TIS, and within 800 hours TIS after the effective date of this AD.

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

Affected Aircraft

Leonardo S.p.a. (Type Certificate previously held by Agusta S.p.A.) Model A109A and A109A II helicopters, certificated in any category, with a slider assembly pitch control (slider) part number (P/N) 109-0130-11-7 installed, except those sliders marked with an "R" after the serial number.

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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