The FAA is superseding an existing airworthiness directive for the Bell Helicopter Textron Model 212 helicopters and adopting requirements for Bell Model 204B, 205A, 205A- 1, 205B and 210 helicopters with certain part-numbered main rotor hub inboard strap fittings.

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The FAA is adopting a new airworthiness directive for MD Helicopters, Inc. Model 500N, 600N and MD900 helicopters to require determining the cure date for each NOTAR fan blade tension-torsion strap.

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The FAA is adopting a new airworthiness directive for Eurocopter France Model AS350B3 and EC130B4 helicopters. This AD requires revising the Limitations section of the Rotorcraft Flight Manual.

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The FAA is adopting a new airworthiness directive for Bell Helicopter Textron, Inc. Model 412 and 412EP helicopters. This AD requires creating a component history card or equivalent record and begin counting and recording the number of accumulated landings for each high aft crosstube assembly.

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The FAA is adopting a new airworthiness directive for Turbomeca S.A. Arriel 2D turboshaft engines. This AD was prompted by a low fuel pressure event caused by deterioration and a loss of the low-pressure drive function within the hydro-mechanical metering unit.

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The FAA is adopting a new airworthiness directive for Bell Model 206L, 206L-1, 206L-3, and 206L-4 helicopters. This AD requires inspecting certain hydraulic servo actuator assemblies for a loose nut, shaft, and clevis assembly, modifying or replacing the servo as necessary, and reidentifying the servo.

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The FAA is superseding four airworthiness directives related to the main rotor yoke on the Bell Model 204B, 205A, 205A-1, 205B, and 212 helicopters, to retain certain inspections and certain life limits, to require an increased inspection frequency for certain yokes, and to expand these inspections and retirement lives to other yokes.

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The FAA is correcting an airworthiness directive that published in the Federal Register. That AD applies to Lycoming Engines TSIO-540-AK1A, and Continental Motors, Inc. TSIO-360-MB, TSIO-360-SB, and TSIO-360-RB reciprocating engines, with certain Hartzell Engine Technologies turbochargers.

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The FAA is adopting a new airworthiness directive for all Turbomeca S.A. Arriel 1A1, 1A2, 1B, 1C, 1C1, 1C2, 1D, 1D1, 1E2, 1K1, 1S, and 1S1 turboshaft engines. This AD requires performing a high gas generator speed rating vibration check.

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The FAA is adopting a new airworthiness directive for all Eurocopter France Model SA-365N, SA-365N1, AS-365N2, AS 365 N3, EC 155B, EC155B1, SA-365C, SA-365C1, SA-365C2, and SA-366G1 helicopters.

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