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.

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.

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.

The FAA is adopting a new airworthiness directive for the Bell Helicopter Textron Inc. Model 205A, 205A-1, and 205B helicopters with certain starter/generator power cable assemblies.

A new rule amends the regulations governing noise certification standards for issuing type and airworthiness certificates for the civil, hybrid airplane-rotorcraft known as the tiltrotor.

The FAA is adopting a new airworthiness directive for all Eurocopter Deutschland GmbH Model EC135 helicopters, except the EC 135 P2+ and T2+. This AD requires inspecting each upper and lower plain journal bearing and replacing the swashplate assembly with an airworthy swashplate assembly if a bearing is not correctly positioned.

The FAA is superseding an existing airworthiness directive for all Turbomeca S.A. Arriel 1A, 1A1, 1A2, 1B, 1C, 1C1, 1C2, 1D, 1D1, 1E, 1E2, 1K, 1K1, 1S, and 1S1 turboshaft engines. This new AD requires determining the engine history; performing a one-time visual inspection of the axial compressor for erosion; performing initial and repetitive cleaning of the gas generator hollow shaft; and replacing the rear bearing if the amount of dust collected during cleaning exceeds 8 grams.

The FAA is adopting a new airworthiness directive for all Eurocopter France Model SA.315B Alouette III, SE.3160 Alouette III, SA.316B Alouette III, SA.316C Alouette III, SA.319B Alouette III, SA 3180-ALOUETTE ASTAZOU, SA 318B-ALOUETTE ASTAZOU, and SA 318 C-ALOUETTE ASTAZOU helicopters.

The FAA is adopting a new airworthiness directive for Eurocopter Deutschland GmbH Model EC135 P1, EC135 P2, EC135 P2+, EC135 T1, EC135 T2, and EC135 T2+ helicopters. This is the Federal Register publication of an Emergency AD that was previously sent to all known owners and operators of these helicopters.

The FAA is adopting a new airworthiness directive for the Sikorsky Aircraft Corporation Model S-92A helicopters. This AD requires inspecting the tail rotor pylon for a loose or missing fastener, a crack, damage, or corrosion and adding an internal doubler to the aft shear deck tunnel assembly.

The FAA is adopting a new airworthiness directive for certain Sikorsky Aircraft Corporation Model S-76C helicopters. This AD requires installing an improved throttle stop and a wider trigger on the engine control levers.

The FAA is adopting a new airworthiness directive to supersede an existing for MD Helicopters MD900s. The existing AD requires a visual inspection, and if necessary, an eddy current inspection of the main rotor lower hub assembly (lower hub) for a crack.

The FAA is adopting a new airworthiness directive for Eurocopter France Model EC225 helicopters with certain epicyclic modules installed. This AD requires inspecting the epicyclic module for the presence of a through-hole upstream of the magnetic plug.

The FAA is proposing to adopt a new airworthiness directive for Robinson Helicopter Company Model R44 and R44 II helicopters equipped with emergency floats, which would require replacing the inflation valve assembly.

The FAA is proposing to adopt a new airworthiness directive for Bell Helicopter Textron, Inc. Model 412 and 412EP helicopters. This is prompted by reports of cracking in the swashplate outer ring assemblies.

The FAA is adopting a new airworthiness directive for Eurocopter France Model SA330F, SA330G, SA330J, AS332C, AS332L, AS332L1, and AS332L2 helicopters to require cleaning, inspecting, and lubricating each tangential gearbox and adjusting, as necessary, the fuel shut-off control lever.

The FAA is adopting a new airworthiness directive for the Bell Helicopter Textron Canada Limited Model 407 helicopters. This AD requires you to replace tail boom attachment hardware, and perform initial and recurring determinations of the torque on the nuts of the tail boom-attachment bolts at all four attachment locations.

The FAA is revising an earlier proposed airworthiness directive for the Sikorsky Aircraft Corporation Model S-92A helicopter, which proposed revising the Rotorcraft Flight Manual, Operating Limitations section, to prohibit Class D external load operations.

The FAA is proposing to adopt a new airworthiness directive for the Sikorsky Model S-70, S-70A, S-70C, S-70C (M), and S-70C (M1) helicopters with General Electric T700-GE-401C or T700-GE-701C engines installed.

The FAA is adopting a new airworthiness directive for all Eurocopter France Model SA-365N, SA-365N1, SA-366G1, AS-365N2, AS 365 N3, EC 155B, and EC155B1 helicopters. This AD was prompted by the discovery of a cracked main rotor mast nut.

The FAA is adopting a new airworthiness directive for all Honeywell TFE731-20R, -20AR, -20BR, -40, -40AR, -40R, -50R, and -60 turbofan engines.

The FAA is correcting an airworthiness directive that was published in the Federal Register. That AD applies to Eurocopter Deutschland GmbH Model MBB-BK 117 C-2 helicopters.

The FAA is adopting a new airworthiness directive for various restricted category helicopters, requiring inspection of tail rotor blade forward tip weight retention blocks and aft tip closures for adhesive bond voids.

The FAA is adopting a new airworthiness directive for all Eurocopter Deutschland MBB-BK 117 A-3, MBB-BK 117 A-4, MBB-BK B-1, MBB-BK 117 B-2, and MBBBK C-1 helicopters equipped with a certain external-hoist system.

The FAA is adopting a new airworthiness directive for CHI Model 107-II and Kawasaki Model KV107-II and KV107-IIA helicopters. This AD requires, before further flight, replacing certain upper collective pitch control yoke bolts.

The FAA is adopting a new airworthiness directive for certain aircraft equipped with Honeywell Model KGS200 Mercury2 wide area augmentation system global navigation satellite sensor units.

The FAA is adopting a new airworthiness directive for Sikorsky Aircraft Corporation Model S-92A helicopters. This AD requires inspecting the main gearbox for a crack.

The FAA is superseding an existing airworthiness directive (AD) for all Eurocopter Deutschland GmbH (ECD) Model MBB-BK 117 C-2 helicopters. Before the FAA issued that AD, the manufacturer developed a procedure which provides terminating action for the AD's requirements. The superceding AD is intended to require implementing this terminating action.

The FAA is adopting a new airworthiness directive (AD) for Agusta S.p.A. (Agusta) Model AB139 and AW139 helicopters with a certain generator control unit (GCU), to require replacing each affected GCU with an airworthy GCU.

The FAA is adopting a new airworthiness directive for Turbomeca S.A. Arriel 2C1, 2C2, and 2S2 turboshaft engines. This AD requires replacement of affected digital engine control units.

The FAA is superseding an existing airworthiness directive for Enstrom Model F-28C, F-28C-2, F-28F, 280C, 280F, 280FX, TH-28, 480, and 480B helicopters to add another trim relay to the applicability and to revise the modification instructions.

AIN Online - The FAA is proposing an airworthiness directive for the Bell Helicopter 412, 412EP and 412CF. It is the result of a reported failure of a collective lever.

The FAA is adopting an Airworthiness Directive for Eurocopter Deutschland GMBH Model MBB-BK 117 C-1 and C-2 helicopters that requires installing a placard corresponding to the maximum permissible flight altitude.