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Airworthiness Directives

 

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15


The FAA is adopting a new airworthiness directive (AD) for Sikorsky Model S-92A helicopters. This AD requires, initially and each time the clamps are removed, inspecting for chafing between the electrical wires and the hydraulic lines and, if there is chafing between the wires or lines, before further flight, replacing the unairworthy wires or lines with airworthy wires or lines. Also, this AD requires inspecting each clamp for correct installation, and if a clamp is incorrectly installed or missing, before further flight, correctly installing the clamps.

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13


The FAA is superseding airworthiness directive 2007-19-09R1 for all Turbomeca S.A. Arriel 2B1 turboshaft engines that do not have modification TU157 incorporated. AD 2007-19-09R1 required replacement of the hydromechanical metering unit with a serviceable HMU.

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31


An EMERGENCY airworthiness directive is being sent to owners and operators of Airbus Helicopters Model AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350C, AS350D, AS350D1, AS355E, AS355F, AS355F1, AS355F2, AS355N, and AS355NP helicopters with modification 07 3215 or with a reinforcement angle, part number 350A08.2493.21 or P/N 350A08.2493.23, installed.

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31


An EMERGENCY airworthiness directive is being sent to owners and operators of AgustaWestland S.p.A. Model AB139 and AW139 helicopters. This EAD was prompted by reports of certain Lower Half Scissor Spherical Bearings dislodging from certain Main Rotor (M/R) Rotating Scissors.

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19


The FAA is revising Airworthiness Directive 2011-22-05 for Eurocopter France Model AS350B, B1, B2, B3, BA, C, D, D1, AS355E, F, F1, F2, N, and NP helicopters with certain tail rotor pitch control rods installed. AD 2011-22-05 required checking the control rod for play before the first flight of each day.

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18


The FAA is adopting a new airworthiness directive for various restricted category helicopters, originally manufactured by Bell Helicopter Textron, Inc., model numbers HH-1K, TH-1F, TH-1L, UH-1A, UH-1B, UH-1E, UH-1F, UH-1H, UH-1L, and UH-1P. This AD requires inspecting the tail rotor cable assembly for an incorrectly machined body.

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16


The FAA is adopting a new airworthiness directive for Airbus Helicopters Model AS332C, AS332L, AS332L1, AS332L2, and SA330J helicopters. This AD prohibits use of the hydraulic hoist in helicopters equipped with certain parts and configurations until a hoist beam lower fitting protector is installed.

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13


The FAA is superseding airworthiness directive 2010-11-51 for Eurocopter France Model AS350B, BA, B1, B2, C, D, and D1 helicopters and Model AS355E, F, F1, F2, and N helicopters with certain part-numbered tail gearbox control levers installed. AD 2010-11-51 required repetitive visual inspections of the TGB control lever for a crack and replacing a cracked TGB control lever with an airworthy TGB control lever.

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12


The FAA is adopting a new airworthiness directive for certain Airbus Helicopters Model AS332L1 helicopters. This AD requires replacing the rivets on the left-hand and right-hand Y350 longitudinal beams.

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12


The FAA is adopting a new airworthiness directive for Eurocopter Deutschland GmbH Model EC135 and MBB-BK 117 C-2 helicopters. This AD requires inspecting the flight-control bearings repetitively, replacing any loose bearing with an airworthy flight-control bearing, and installing bushings and washers.

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