Airworthiness Directive
AD 2021-17-15: Leonardo S.p.a. Helicopters
Airworthiness Directives; Leonardo S.p.a. Helicopters
- Effective
- Oct 13, 2021
- Published
- Sep 8, 2021
- Registered aircraft
- 1
Models this AD may apply to
AI-extracted — verify against originalMatched from the AD's applicability section. Applicability must be confirmed by a mechanic against the aircraft's records.
Aircraft
- Leonardo S P A AB139
- Serial numbers per Table 1 of Leonardo Helicopters Alert Service Bulletin No. 139-520, dated April 26, 2018. Only with: Main rotor blade P/N 3G6210A00131 with less than 1,200 total hours TIS and serial number listed in Table 1 of ASB 139-520 installed.
- Only with: Main rotor blade P/N 3G6210A00131 with less than 1,200 total hours TIS and serial number listed in Table 1 of ASB 139-520 installed.
Applicability
From the AD textThis AD applies to Leonardo S.p.a. Model AB139 and AW139 helicopters, certificated in any category, with a main rotor blade (MRB) that has less than 1,200 total hours time-in-service (TIS) and has part number 3G6210A00131 with any serial number listed in Table 1 of Leonardo Helicopters Alert Service Bulletin No. 139-520, dated April 26, 2018 (ASB 139-520), installed.
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