Airworthiness directives › 2020-15-18
AD 2020-15-18 Airworthiness Directives; Leonardo S.p.A. Helicopters
Models named: AB139, AW139, AW169, AW189. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to the Leonardo S.p.A. helicopters identified in paragraphs (c)(1) through (3) of this AD, certificated in any category. (1) Model AB139 and AW139 helicopters, all serial numbers, equipped with an emergency flotation system (EFS) float assembly having part number (P/N) 3G9560V00332, 3G9560V00432, 3G9560V01432, or 3G9560V01532. (2) Model AW169 helicopters, all serial numbers, equipped with an EFS float assembly having any part number. (3) Model AW189 helicopters, all serial numbers, equipped with an EFS float assembly having P/N 8G9560V00331 or 8G9560V00431.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
(1) An “affected part” is an SMA inflation system having P/N 3G9560V01052 (Model AB139 and AW139 helicopters), P/N 6F9560V00551 (Model AW169 helicopters), or P/N 8G9560V01751 (Model AW189 helicopters), as applicable, with a serial number specified in Figure 1 to paragraph (g)(1) of this AD except those which have been corrected in accordance with the Accomplishment Instructions of Leonardo Helicopters Alert Service Bulletin (ASB) No. 139-533, dated August 30, 2018 (ASB 139-533); Leonardo Helicopters ASB No. 169-099, dated August 30, 2018 (ASB 169-099); or Leonardo Helicopters ASB No. 189-195, dated August 30, 2018 (ASB 189-195); as applicable. ER27AU20.006 (2) A “serviceable part” is an affected part that has been corrected in accordance with the Accomplishment Instructions of ASB 139-533; ASB 169-099; or ASB 189-195; as applicable; or a part that is not affected.
Unsafe condition
This AD was prompted by reports of uncommanded deployment of the EFS due to improper accomplishment of the reset procedure of the shape memory alloy (SMA) inflation system actuation device. The FAA is issuing this AD to address uncommanded EFS deployment, which could result in reduced control of the helicopter.
Affected ADs
None.
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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