Sun Yi

This airworthiness directive (AD) requires an inspection of each TRB for the general condition and any evidence of…

This airworthiness directive (AD) requires a visual inspection of the affected rods for damage, cracks, or abnormal play…

This airworthiness directive (AD) continues to require the actions specified in AD 2019-05-06 and also requires a modification…

This EASA airworthiness directive (AD), 2021-0131, applies to the AW189 helicopter, all serial numbers, and regards a design…

This proposed airworthiness directive (PAD), 21-059R1, concerns certain tail rotor sleeve assemblies.

This airworthiness directive (AD) repetitively inspecting the MGB particle detector and the MGB bottom housing (oil sump) for…

This airworthiness directive (AD) requires replacement of certain TT-straps with serviceable parts and implementation of a new storage…

This proposed airworthiness directive (AD) requires removing certain main rotor head torsion tie bars from service and revising…

This airworthiness directive (AD) requires temporarily revising the existing rotorcraft flight manual for your helicopter and installing an…

This airworthiness directive (AD) required inspecting for a gap between the main gearbox oil cooling fan assembly rotor…

This proposed airworthiness directive (AD) would require dye penetrant inspecting certain TGB actuating rods for a crack, and…

This airworthiness directive (AD) required repetitively inspecting, cleaning, and lubricating each life raft inflation cylinder percussion system bellcrank…

This airworthiness directive (AD) 2015-25-04 required inspecting the slider assembly pitch control (slider) for play and replacing the…

This proposed airworthiness directive (AD) would require repetitive inspections of the vertical fin vibration absorber installation and the…

This proposed airworthiness directive (PAD) 21-067: Airbus Helicopters Deutschland Model Bo 105 helicopters; ATA 05 – Time Limits…

This EASA airworthiness directive (AD) 2021-0126: Leonardo S.p.A. AB 212 and AB 412 helicopters; ATA 28 / 79…

This EASA airworthiness directive (AD) 2021-0123-E: Airbus Helicopters Model AS350 helicopters; ATA 29 – Hydraulic Power – Tail…

This airworthiness directive (AD) requires revising the life limit for certain part-numbered tail rotor (T/R) blades, updating the…

The FAA is revising a notice of proposed rulemaking (NPRM) that applied to certain Airbus Helicopters Model EC225…

This EASA airworthiness directive (AD), AD 2021-0122, ATA 05, covers time limits / maintenance checks, the airworthiness limitation…

The FAA is revising a notice of proposed rulemaking that applied to certain Bell Textron Canada Model 206A,…

This proposed airworthiness directive (AD) would require measuring the 9-degree frame flange for the correct edge distance of…

This airworthiness directive (AD) requires removing certain switch units from service and prohibits installing those switch units.

This EASA airworthiness directive (AD) 2020-0132R1: Airbus Helicopters Model EC175 B helicopters; ATA 55 – Stabilizers – Horizontal…

This EASA airworthiness directive (AD) 2020-0094R1: Airbus Helicopters Model EC175 B helicopters; ATA 52 – Doors – Cargo…

This EASA airworthiness directive (AD) 2019-0148R1: Airbus Helicopters Model EC175 B helicopters; ATA 55 – Stabilizers – Horizontal…

This proposed airworthiness directive (PAD) affects A109C, A109K2, A109E, A109S, and AW109SP helicopters, all serial numbers (s/n).

This proposed airworthiness directive (PAD) 21-058: Airbus Helicopters Models AS350, EC130 and EC120 helicopters; ATA 31 – Indicating…

This proposed airworthiness directive (AD) would also require reporting certain information and prohibit the installation of an affected…

Airworthiness directive (AD) 2016-08-20 required repetitively inspecting the tail boom to Fenestron junction frame (junction frame) for a…

This airworthiness directive, prompted by the discovery of a main gearbox (MBG) with worn ramps and broken roller…

This airworthiness directive (AD), which supersedes EASA AD 2018-0163, dated 25 July 2018, affects MBB/BK 117 D-2 helicopters…

This proposed airworthiness directive, prompted by a report of sudden severe vibrations and a cracked open blade trailing…

This airworthiness directive requires repetitive inspections of a certain part-numbered stainless steel cable installed on a certain part-numbered…

This airworthiness directive (AD) requires replacing certain tail rotor blades (TRBs), re-identifying certain TRBs, and repairing certain other…

This airworthiness directive (AD) requires repetitively inspecting frame number (No.) 9 for a crack.

This proposed airworthiness directive (AD) would require repetitive inspections for hydraulic leaks, corrective actions if necessary, and an…

This proposed airworthiness directive (AD) would require a functional check of the pilot and copilot door jettisoning system…

This notice proposes to cancel EASA Airworthiness Directive 2007-0256 dated Sep 19, 2007, which regarded certain Pacific Scientific…

This proposed airworthiness directive (AD) would require revising the existing Rotorcraft Flight Manual (RFM) for all Leonardo Model…

These special conditions are issued for Airbus H160B helicopter, which has a novel or unusual design feature associated…

This proposed AD, which applies to certain Model BO105 series helicopters, would require inspections of the hoist control…

This proposed airworthiness directive (AD) would require a one-time inspection of the main rotor slip ring and, depending…