Airworthiness directives › 2021-10-24
AD 2021-10-24 Airworthiness Directives; Leonardo S.p.a. (Type Certificate Previously Held by Agusta S.p.A.) Helicopters
Models named: A109A, A109A II. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to 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.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
(1) Within 25 hours time-in-service (TIS) after the effective date of this AD, and thereafter at intervals not to exceed 25 hours TIS, inspect the slider for play. If there is play greater than 2.3 millimeters (0.09 inch), before further flight, replace the slider with a slider P/N 109-0130-11-7 with suffix “R” marked after the serial number. (2) Within 800 hours TIS after the effective date of this AD, if not previously required per paragraph (g)(1) of this AD, replace slider P/N 109-0130-11-7 with slider P/N 109-0130-11-7 with suffix “R” marked after the serial number. (3) 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. (4) As of the effective date of this AD, do not install slider P/N 109-0130-11-7 on any helicopter unless the slider is marked with suffix “R” after the serial number.
Unsafe condition
This AD defines the unsafe condition as play on a slider. This condition could result in loss of tail rotor pitch control and consequently loss of helicopter control.
Affected ADs
This AD replaces AD 2015-25-04, Amendment 39-18342 (80 FR 76381, December 9, 2015).
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