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Airworthiness Directives

 

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The FAA is superseding Airworthiness Directive (AD) 2012–10–53 for Eurocopter Deutschland GmbH (now Airbus Helicopters) Model EC135P1, EC135P2, EC135P2+, EC135T1, EC135T2, and EC135T2+ helicopters. AD 2012–10–53 required, before further flight and at specified intervals, checking and inspecting the upper and lower main rotor hub shaft flanges for a crack, and inspecting the lower hub-shaft flange bolt attachment areas for a crack.

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06

The FAA is publishing a new airworthiness directive (AD) for certain AgustaWestland S.p.A. Model AB139 and AW139 helicopters. This AD requires repetitively inspecting the Main Rotor (M/R) Rotating Scissors for play of the Lower Half Scissor Spherical Bearing (bearing) and removing the bearing if there is play beyond allowable limits.

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05

The FAA is adopting a new airworthiness directive (AD) for MD Helicopters, Inc. Model MD900 helicopters. This AD requires an eddy current inspection of the main rotor upper hub assembly (upper hub) for a crack and replacing the upper hub with an airworthy upper hub before further flight if there is a crack.

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05

The FAA is publishing a new airworthiness directive (AD) for Airbus Helicopters Model EC130B4 and EC130T2 helicopters, which was sent previously to all known U.S. owners and operators of these helicopters. This AD requires repetitively inspecting the Fenestron to tailboom junction frame for a crack.

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05

The FAA is adopting a new airworthiness directive (AD) for the Sikorsky S-92A helicopter. This AD requires revising the Rotorcraft Flight Manual to include the appropriate operating limitations for performing Class D external load-combination operations.

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15

The FAA is adopting a new airworthiness directive (AD) for Airbus Helicopters Model EC135P1, P2, P2+, T1, T2, and T2+ helicopters. This AD requires repetitive visual inspections of the ring frame X9227 for a crack and, if there is a crack, replacing the ring frame before further flight. This AD is prompted by a fatigue crack in the ring frame.

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15

The FAA is publishing a new airworthiness directive (AD) for Airbus Helicopters Model MBB-BK 117 A-3, MBB-BK 117 A-4, MBB-BK 117 B-1, and MBB-BK 117 C-2 helicopters with a certain Metro Aviation, Inc., vapor-cycle air conditioning kit pulley installed, which was sent previously to all known U.S. owners and operators of these helicopters. This AD supersedes AD 2013-12-06, which required inspecting the pulley for looseness and properly installed lockwire and re-installing the pulley.

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02

The FAA is adopting a new airworthiness directive (AD) for certain Pratt & Whitney Canada Corp. turboprop engines. This AD requires installing a reinforcement liner to the power turbine (PT) containment ring and, for certain PT containment rings, adding scallops.

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02

The FAA is adopting a new airworthiness directive (AD) for Columbia Helicopters, Inc. Model 234 helicopters. This AD requires visually and tap inspecting each fore and aft rotor blade for any defect, damage, or a disbond and, if necessary, repairing or replacing the blade.

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01

The FAA is superseding airworthiness directive (AD) 2007-10-07 for all Turbomeca S.A. Arriel 2B, 2B1, and 2B1A turboshaft engines. AD 2007-10-07 required an inspection of the splines of the coupling assembly and the hydro-mechanical metering unit (HMU) drive gear shaft for wear.

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