Skip to content
KnownTail
Airworthiness Directive

AD 2022-27-03: Leonardo S.p.a. Helicopters

Airworthiness Directives; Leonardo S.p.a. Helicopters

Effective
Jan 31, 2023
Published
Dec 27, 2022
Registered aircraft
1

Models this AD may apply to

AI-extracted — verify against original

Matched from the AD's applicability section. Applicability must be confirmed by a mechanic against the aircraft's records.

Aircraft

  • Leonardo S P A AB139
  • Only with: Main rotor gearbox P/N 3G6320A00131, 3G6320A00132, 3G6320A00133, 3G6320A00134, 3G6320A00135, 3G6320A00136, 3G6320A22031, 4G6320A00132, or 4G6320A00133, with MGB spherical bearing lock nut P/N 3G6320A09151 installed.
  • Only with: Main rotor gearbox P/N 3G6320A00131, 3G6320A00132, 3G6320A00133, 3G6320A00134, 3G6320A00135, 3G6320A00136, 3G6320A22031, 4G6320A00132, or 4G6320A00133, with MGB spherical bearing lock nut P/N 3G6320A09151 installed.

Applicability

From the AD text
This AD applies to Leonardo S.p.a. Model AB139 and AW139 helicopters, certificated in any category, with a main rotor gearbox (MGB) part number (P/N) 3G6320A00131, 3G6320A00132, 3G6320A00133, 3G6320A00134, 3G6320A00135, 3G6320A00136, 3G6320A22031, 4G6320A00132, or 4G6320A00133, and MGB spherical bearing lock nut (lock nut) P/N 3G6320A09151 installed.

Related ADs

Supersedes or revises AD 2021-20-10.

Read the AD in the Federal RegisterReport an error on this page