Robinson airworthiness directives
30 ADs in the reference matching Robinson — from the Federal Register, checked every weekday. Applicability may depend on serial and effectivity: verify against the official AD before any maintenance action.
Reference last synced: 10/23/2026 04:00 UTC · 10,462 ADs indexed
Airworthiness Directives; Robinson Helicopter Company Helicopters
The FAA is superseding Airworthiness Directive (AD) 2024-19-11 for all Robinson Helicopter Company Model R44 and R44 II helicopters. AD 2024-19-11 required visually inspecting a certain flex plate assembly (flex plate) and certain clutch shaft forward yokes (yokes), including each flex plate bolt, and depending on the results, taking corrective actions. AD 2024-19-11 also required removing certain yokes from service…
Airworthiness Directives; Robinson Helicopter Company
The FAA is adopting a new airworthiness directive (AD) for certain Robinson Helicopter Company Model R44 and R44 II helicopters. This AD was prompted by several reports of failed clutch actuators and failed rivets attaching the belt tension clutch actuator brackets (bracket) to the fan scroll housing. This AD requires inspecting each bracket and, depending on the results, accomplishing additional inspections or taki…
Airworthiness Directives; Robinson Helicopter Company Helicopters
The FAA is adopting a new airworthiness directive (AD) for Robinson Helicopter Company (Robinson Helicopter) Model R22 Beta, R22 Mariner, R44, and R44 II helicopters with a certain governor controller installed. This AD was prompted by reports of engine governor failure, which was a result of water intrusion inside of the governor controller. This AD requires replacing certain governor controllers and prohibits inst…
Airworthiness Directives; Robinson Helicopter Company Helicopters
The FAA is adopting a new airworthiness directive (AD) for all Robinson Helicopter Company Model R44 and R44 II helicopters. This AD was prompted by reports of a fractured clutch shaft forward yoke (yoke) on the main rotor (M/R) drive due to fatigue cracking. This AD requires visually inspecting a certain part-numbered flex plate assembly (flex plate) and certain part-numbered yokes, including each flex plate bolt,…
Airworthiness Directives; Robinson Helicopter Company Helicopters
The FAA is adopting a new airworthiness directive (AD) for certain Robinson Helicopter Company Model R22, R22 Alpha, R22 Beta, R22 Mariner, R44, R44 II, and R66 helicopters. This AD was prompted by reports of helicopters losing a tail rotor blade (TRB) tip cap. This AD requires visually checking and inspecting certain part-numbered and serial-numbered TRB tip caps for evidence of corrosion and, depending on the resu…
Airworthiness Directives; Robinson Helicopter Company Helicopters
The FAA is superseding Airworthiness Directive (AD) 2021-19- 08, which applied to certain Robinson Helicopter Company (Robinson) Model R44 and R44 II helicopters. AD 2021-19-08 required checking each tail rotor blade (blade) for any crack and removing any cracked blade from service. AD 2021-19-08 also required removing all affected blades from service and prohibited installing any affected blade on any helicopter. S…
Airworthiness Directives; Robinson Helicopter Company Helicopters
The FAA is adopting a new airworthiness directive (AD) for certain Robinson Helicopter Company Model R22 BETA, R44, and R44 II helicopters. This AD was prompted by reports of intermittent or abnormal operation of the engine revolutions per minute (RPM) governor (governor). This AD requires inspecting the engine RPM sensor wiring and installing a wiring kit. The FAA is issuing this AD to address the unsafe condition…
Airworthiness Directives; Robinson Helicopter Company Helicopters
The FAA is adopting a new airworthiness directive (AD) for certain Robinson Helicopter Company Model R44 and R44 II helicopters. This AD was prompted by reports of cracked tail rotor blades (blades). This AD requires checking each blade for any crack and removing any cracked blade from service. This AD also requires removing all affected blades from service and prohibits installing any affected blade on any helicopt…
Airworthiness Directives; Robinson Helicopter Company Helicopters
The FAA is adopting a new airworthiness directive (AD) for Robinson Helicopter Company (Robinson) Model R66 helicopters. This AD was prompted by reports of tail rotor (T/R) drive shaft forward hanger bearing failures. This AD requires installing a certain part numbered kit and removing parts from service or replacing a certain part- numbered T/R drive shaft assembly. This AD also prohibits the installation of certai…
Airworthiness Directives; Robinson Helicopter Company
The FAA is superseding Airworthiness Directive (AD) 2019-12-18 for Robinson Helicopter Company (Robinson) Model R44 II helicopters. AD 2019-12-18 required inspecting certain engine air induction hoses (hoses) and replacing any hose that was not airworthy. AD 2019-12-18 also prohibited the installation of certain hoses. This AD continues to require inspecting those previously affected hoses and amends the applicabili…
Airworthiness Directives; Robinson Helicopter Company Helicopters
The FAA is adopting a new airworthiness directive (AD) for Robinson Helicopter Company (Robinson) Model R44 and R44 II helicopters. This AD was prompted by reports of cracking in certain tail rotor blades. This AD requires visually checking each tail rotor blade for a crack. The FAA is issuing this AD to address the unsafe condition on these products.
Airworthiness Directives; Robinson Helicopter Company Helicopters
The FAA is adopting a new airworthiness directive (AD) for Robinson Helicopter Company Model R44 and R44 II helicopters with an agricultural spray system installed by Supplemental Type Certificate (STC) SR00286BO (spray system). This spray system is also known as a Simplex Manufacturing Company (Simplex) Model 244 spray system. This AD was prompted by a report of an in-flight failure of the spray system elbow pump f…
Airworthiness Directives; Robinson Helicopter Company Helicopters
The FAA is adopting a new airworthiness directive (AD) for Robinson Helicopter Company (Robinson) Model R44 II helicopters. This AD requires inspecting the engine air induction hose (hose) and replacing any hose that is not airworthy. This AD was prompted by multiple reports of separation between the outer and inner layers of the hoses. The FAA is issuing this AD to address the unsafe condition on these products.
Airworthiness Directives; Robinson Helicopter Company Helicopters
We are adopting a new airworthiness directive (AD) for certain Robinson Helicopter Company (Robinson Helicopter) Model R66 helicopters. This AD requires inspecting the oil tank outlet's fitting color. If the fitting is blue, this AD requires replacing the tank with an oil tank that lacks a blue fitting. This AD also requires determining the revision letter on the ink stamp, and installing an oil tank angle based on…
Airworthiness Directives; Robinson Helicopter Company Helicopters
We are adopting a new airworthiness directive (AD) for Robinson Helicopter Company (Robinson) Model R44, R44 II, and R66 helicopters. This AD requires inspecting the main rotor blade (MRB). This AD was prompted by a determination that some MRBs may have reduced blade thickness due to blending out corrosion. The actions are intended to prevent the unsafe condition on these products.
Airworthiness Directives; Robinson Helicopter Company (Robinson)
We are adopting a new airworthiness directive (AD) for Robinson Model R22, R22 Alpha, R22 Beta, and R22 Mariner helicopters with certain fuel shut-off valves installed. This AD requires replacing the fuel shut-off valve with a newer design fuel shut-off valve. This AD is prompted by three accidents that occurred because the fuel shut- off valve was inadvertently moved to the "off" position. These actions are intende…
Airworthiness Directives; Robinson Helicopter Company Helicopters
We are adopting a new airworthiness directive (AD) for Robinson Helicopter Company (Robinson) Model R44 and R44 II helicopters equipped with emergency floats. This AD requires replacing the inflation valve assembly. This AD was prompted by the failure of the emergency floats to deploy during a factory test because a needle was binding within the inflation valve assembly. The actions are intended to prevent the failu…
Airworthiness Directives; Robinson Helicopter Company Helicopters
The FAA is correcting an airworthiness directive (AD) that was published in the Federal Register. That AD applies to Robinson Helicopter Company (Robinson) Model R22, R22 Alpha, R22 Beta, R22 Mariner, R44, and R44 II helicopters. The paragraph reference in paragraph (b) of the Compliance section is incorrect. Paragraph (b) references paragraph (d), when it should reference paragraph (c). This document corrects that…
Airworthiness Directives; Robinson Helicopter Company (Robinson) Model R22, R22 Alpha, R22 Beta, and R22 Mariner Helicopters, and Model R44, and R44 II Helicopters
This amendment adopts a new airworthiness directive (AD) for Robinson Model R22, R22 Alpha, R22 Beta, and R22 Mariner helicopters, and Model R44 and R44 II helicopters. This AD requires visually inspecting each tail rotor (T/R) control pedal bearing block support (support) for a crack, measuring the thickness of each support, installing support safety tabs on certain supports, and replacing supports of a certain thi…
Airworthiness Directives; Robinson Helicopter Company Models R22, R22 Alpha, R22 Beta, R22 Mariner, R44 and R44 II Helicopters
This amendment adopts a new airworthiness directive (AD) for the specified Robinson Helicopter Company (Robinson) helicopters. This action requires a one-time visual inspection for skin separation along the leading edge of blade skin aft of the skin-to-spar bond line on the lower surface of each blade and in the tip cap area. This action also requires a "tap test" for detecting a separation or void in both bonded ar…
Airworthiness Directives; Robinson Helicopter Company Model R44 and R44 II Helicopters
This amendment adopts a new airworthiness directive (AD) for Robinson Helicopter Company (Robinson) Model R44 and R44 II helicopters that have a certain seat belt buckle (buckle) assembly installed, that requires removing the buckle assembly and the buckle assembly spacer, and replacing them with airworthy parts. This amendment is prompted by an accident in which a seat belt failed, and also by reports of cracking i…
Airworthiness Directives; Robinson Helicopter Company Model R-22 Series Helicopters
This amendment adopts a new airworthiness directive (AD) for the specified Robinson Helicopter Company (Robinson) Model R-22 series helicopters that have been modified in accordance with Supplemental Type Certificate (STC) No. SR09189RC. This action requires inspecting the left-hand door and right-hand door for a crack in the door assembly integral frame, and replacing the door assembly if a crack is found. This AD…
Airworthiness Directives; Robinson Helicopter Company Model R22-Series Helicopters
This amendment supersedes an existing emergency airworthiness directive (AD) for the Robinson Helicopter Company (Robinson) Model R22, R22 Alpha, R22 Beta, and R22 Mariner helicopters, that currently requires track-and-balancing certain main rotor blades (blades), replacing blades, and determining the age of each blade and revising the component history card or equivalent maintenance record. This amendment requires…
Airworthiness Directives; Robinson Helicopter Company Model R44 Helicopters
This amendment adopts a new airworthiness directive (AD) for Robinson Helicopter Company (RHC) Model R44 helicopters that requires inspecting the tail rotor pitch control assembly for roughness or binding of the pitch control bearings (bearings) by hand-rotating the pitch control bearing housing (housing). If the housing does not rotate freely, the AD requires replacing the unairworthy pitch control assembly with an…
Airworthiness Directives; Robinson Helicopter Company Model R22 Helicopters
This amendment adopts a new airworthiness directive (AD) for Robinson Helicopter Company (RHC) Model R22 helicopters that requires inspecting the tail rotor pitch control assembly for roughness or binding of the pitch control bearings (bearings) by hand-rotating the pitch control bearing housing (housing). If the housing does not rotate freely, the AD requires replacing the unairworthy pitch control assembly with an…
Airworthiness Directives; Robinson Helicopter Company Model R44 Helicopters
This amendment adopts a new airworthiness directive (AD) for Robinson Helicopter Company (RHC) Model R44 helicopters that requires establishing a life limit of 2200 hours time-in-service (TIS) for affected horizontal stabilizers. This amendment is prompted by engineering analysis which indicates that certain vertical-to- horizontal stabilizer attach channels (channels) will crack sooner than the original life limit…
Airworthiness Directives; Robinson Helicopter Company Model R22 Helicopters
This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) 2000-20-51, which was sent previously to all known U.S. owners and operators of Robinson Helicopter Company (RHC) Model R22 helicopters by individual letters. This AD requires checking the yoke half assembly (yoke) for any crack and replacing a cracked yoke assembly before further flight. This AD also requires replacin…
Airworthiness Directives; Robinson Helicopter Company Model R22 Helicopters
This amendment adopts a new airworthiness directive (AD), applicable to Robinson Helicopter Company (RHC) Model R22 helicopters. This action requires replacing certain serial number sprag clutches with an airworthy sprag clutch as specified in this AD. This amendment is prompted by several reports of clutch assemblies with cracked or fractured sprag ends. The actions specified by this AD are intended to prevent a sp…
Airworthiness Directives; Robinson Helicopter Company Model R44 Helicopters
This amendment adopts a new airworthiness directive (AD), applicable to Robinson Helicopter Company (RHC) Model R44 helicopters. This action requires replacing certain serial number (S/N) sprag clutches with an airworthy sprag clutch as specified in this AD. This amendment is prompted by several reports of sprag clutch failures. The actions specified by this AD are intended to prevent a sprag clutch failure, loss of…
Airworthiness Directives; Robinson Helicopter Company Model R44 Helicopters
This amendment adopts a new airworthiness directive (AD), applicable to Robinson Helicopter Company (Robinson) Model R44 helicopters, that requires inspecting the wire harness for contact with the fuel line assembly, removing and replacing the fuel line assembly if chafing has occurred, and installing spiral wrap tubing on the fuel line assembly. This amendment is prompted by four incidents of contact between the wi…