N91HR

01 /  Registration

Filed with the Federal Aviation Administration

Every cell below is a literal field from the FAA Aircraft Registry. Click any value to open the FAA registry record for N91HR.

02 /  NTSB Records

Events on file with the National Transportation Safety Board

03 /  Airworthiness Directives

Applicable to EUROCOPTER EC120B

Federal Aviation Administration airworthiness directives matched to make and model. Each entry links to the Federal Register publication.

• Apr 3, 2025

  Airworthiness Directives; Airbus Helicopters (Type Certificate Previously Held by Eurocopter France)

  The FAA is superseding Airworthiness Directive (AD) 2008-10-01 and AD 2010-05-51, which applied to certain Eurocopter France (now Airbus Helicopters) Model EC120B helicopters. AD 2008-10-01 required replacing certain part-numbered and serial-numbered spherical thrust bearings. AD 2010-05-51 required repetitively inspecting the main rotor (M/R) head rotor hu…

  Federal Register →

• Nov 29, 2024

  Airworthiness Directives; Airbus Helicopters (Type Certificate Previously Held by Eurocopter France)

  The FAA proposes to supersede Airworthiness Directive (AD) 2008-10-01 and AD 2010-05-51, which apply to certain Eurocopter France (now Airbus Helicopters) Model EC120B helicopters. AD 2008-10-01 requires replacing certain part-numbered and serial-numbered spherical thrust bearings. AD 2010-05-51 requires repetitively inspecting the main rotor (M/R) head rot…

  Federal Register →

• Feb 10, 2022

  Airworthiness Directives; Airbus Helicopters

  The FAA is adopting a new airworthiness directive (AD) for Airbus Helicopters Model EC120B helicopters. This AD was prompted by a report of corrosion found on the external tail boom skin, under the Very High Frequency (VHF) antenna. This AD requires inspecting the tail boom at the VHF antenna attachments and depending on the results, repairing or modifying…

  Federal Register →

• Dec 23, 2021

  Airworthiness Directives; Airbus Helicopters

  The FAA is superseding Airworthiness Directive (AD) 2020-11- 05, which applied to all Airbus Helicopters Model EC120B helicopters. AD 2020-11-05 required repetitive inspections of the tail rotor (TR) hub body for cracks and applicable corrective actions if necessary, and repetitive replacement of the attachment bolts, washers, and nuts of the TR hub body. T…

  Federal Register →

• Oct 28, 2021

  Airworthiness Directives; Airbus Helicopters

  The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus Helicopters Model EC120B helicopters. This proposed AD was prompted by a report of corrosion found on the external tail boom skin, under the Very High Frequency (VHF) antenna. This proposed AD would require inspecting the tail boom at the VHF antenna attachments and depending on the…

  Federal Register →

• Oct 18, 2021

  Airworthiness Directives; Airworthiness Directives; Airbus Helicopters and Airbus Helicopters Deutschland GmbH (AHD) Helicopters

  The FAA is adopting a new airworthiness directive (AD) for Airbus Helicopters Model AS332C, AS332C1, AS332L, AS332L1, AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350D, AS355E, AS355F, AS355F1, AS355F2, AS355N, AS355NP, AS-365N2, AS 365 N3, EC120B, EC130B4, EC130T2, EC 155B, EC155B1, SA-365N, and SA-365N1 helicopters; and Airbus Helicopters Deutschland Gmb…

  Federal Register →

• Oct 8, 2021

  Airworthiness Directives; Airbus Helicopters

  The FAA proposes to supersede Airworthiness Directive (AD) 2020-11-05, which applies to all Airbus Helicopters Model EC120B helicopters. AD 2020-11-05 requires repetitive inspections of the tail rotor (TR) hub body for cracks and applicable corrective actions if necessary, and repetitive replacement of the attachment bolts, washers, and nuts of the TR hub b…

  Federal Register →

• Jun 16, 2021

  Airworthiness Directives; Airbus Helicopters and Airbus Helicopters Deutschland GmbH (AHD) Helicopters

  The FAA proposes to adopt a new airworthiness directive (AD) for Airbus Helicopters Model AS332C, AS332C1, AS332L, AS332L1, AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350D, AS355E, AS355F, AS355F1, AS355F2, AS355N, AS355NP, AS-365N2, AS 365 N3, EC120B, EC130B4, EC130T2, EC 155B, EC155B1, SA-365N, and SA-365N1 helicopters; and Airbus Helicopters Deutschla…

  Federal Register →

• Dec 20, 2017

  Airworthiness Directives; Airbus Helicopters (Previously Eurocopter France)

  We are superseding Airworthiness Directive (AD) 2009-25-07 for Airbus Helicopters Model EC120B helicopters. AD 2009-25-07 required amending the rotorcraft flight manual supplement (RFMS) and pre-flight checking the emergency flotation gear before each flight over water. Since we issued AD 2009-25-07, Airbus Helicopters developed a terminating action and ide…

  Federal Register →

• Jul 14, 2017

  Airworthiness Directives; Airbus Helicopters (Previously Eurocopter France)

  We propose to supersede Airworthiness Directive (AD) 2009-25- 07 for Airbus Helicopters Model EC120B helicopters. AD 2009-25-07 currently requires amending the rotorcraft flight manual supplement (RFMS) and pre-flight checking the emergency flotation gear before each flight over water. Since we issued AD 2009-25-07, Airbus Helicopters developed a terminatin…

  Federal Register →

• Oct 26, 2016

  Airworthiness Directives; Airbus Helicopters (Previously Eurocopter France)

  We propose to supersede Airworthiness Directive (AD) 2014-12- 12 for Airbus Helicopters (previously Eurocopter France) Model EC130B4 and Model EC120B helicopters. AD 2014-12-12 currently requires inspecting and, if necessary, replacing parts of the sliding door star support attachment assembly. This proposed AD would expand the applicability and provide rev…

  Federal Register →

• Jun 22, 2016

  Airworthiness Directives; Airbus Helicopters (Previously Eurocopter France) Helicopters

  We are superseding Airworthiness Directive (AD) 2000-05-17 and AD 2001-04-12, which apply to Eurocopter France (now Airbus Helicopters) Model EC120B helicopters. AD 2000-05-17 and AD 2001-04-12 required repetitive visual checks of the engine-to-main gearbox (MGB) coupling tube assembly (coupling tube) for a crack and replacing any cracked tube with an airwo…

  Federal Register →

• Dec 31, 2015

  Airworthiness Directives; Airbus Helicopters (Previously Eurocopter France)

  We are superseding airworthiness directive (AD) 2002-13-11 for Eurocopter France (now Airbus Helicopters) Model EC120B helicopters. AD 2002-13-11 required installing front and side covers on the cabin floor to protect the yaw control at both the pilot and co-pilot stations. Since we issued AD 2002-13-11, we have determined that the required actions should a…

  Federal Register →

• Jun 16, 2015

  Airworthiness Directives; Airbus Helicopters (Previously Eurocopter France) (Airbus Helicopters) Helicopters

  This document proposes superseding Airworthiness Directives (AD) 2000-05-17 and AD 2001-04-12, which apply to Eurocopter France (now Airbus Helicopters) Model EC120B helicopters. AD 2000-05-17 and AD 2001-04-12 require repetitive visual checks of the engine-to-main gearbox (MGB) coupling tube assembly (coupling tube) for a crack and replacing any cracked tu…

  Federal Register →

• May 14, 2015

  Airworthiness Directives; Airbus Helicopters (Previously Eurocopter France)

  We propose to supersede airworthiness directive (AD) 2002-13- 11 for Eurocopter France (now Airbus Helicopters) Model EC120B helicopters. AD 2002-13-11 currently requires installing front and side covers on the cabin floor to protect the yaw control at both the pilot and co-pilot stations. Since we issued AD 2002-13-11, we have determined that the required…

  Federal Register →

• Jun 30, 2014

  Airworthiness Directives; Airbus Helicopters (Previously Eurocopter France) Helicopters

  We are adopting a new airworthiness directive (AD) for certain Airbus Helicopters Model EC120B and EC130B4 helicopters. This AD requires replacing parts of the sliding door star support attachment assembly, depending on the outcome of required inspections. This AD is prompted by a report that passengers in a helicopter were forced to exit through the pilot…

  Federal Register →

• Jan 2, 2014

  Airworthiness Directives; Eurocopter France Helicopters

  We propose to adopt a new airworthiness directive (AD) for certain Eurocopter France (Eurocopter) Model EC120B and EC130B4 helicopters. This proposed AD would require replacing parts of the sliding door star support attachment assembly, depending on the outcome of required inspections. This proposed AD is prompted by a report that passengers in a Eurocopter…

  Federal Register →

• Aug 23, 2013

  Airworthiness Directives; Eurocopter France Helicopters

  We are adopting a new airworthiness directive (AD) for Eurocopter France (Eurocopter) Model EC120B and EC130B4 helicopters with a certain emergency flotation gear (float) installed. This AD requires inspecting the float for chafing of the fabric covering and adding protectors to the float installation to prevent contact between the float and the protruding…

  Federal Register →

• Apr 15, 2013

  Airworthiness Directives; Eurocopter France Helicopters

  We propose to adopt a new airworthiness directive (AD) for Eurocopter France (Eurocopter) Model EC120B and EC130B4 helicopters with certain emergency flotation gear (float) installed. This proposed AD would require inspecting the float for chafing of the fabric covering and adding protectors to the float installation to prevent contact between the float and…

  Federal Register →

• Aug 26, 2011

  Airworthiness Directives; Eurocopter France (ECF) Model EC120B Helicopters

  This amendment adopts a new airworthiness directive (AD) for ECF Model EC120B helicopters. This action requires inserting an emergency procedure appendix from an ECF Emergency Alert Service Bulletin into the Rotorcraft Flight Manual (RFM). This action also requires modifying the emergency switch electrical wiring and performing tests to ensure correct opera…

  Federal Register →

• Jun 2, 2011

  Airworthiness Directives; L'Hotellier Portable Halon 1211 Fire Extinguishers

  This amendment adopts a new airworthiness directive (AD) for the specified fire extinguishers. This action requires replacing each unairworthy portable fire extinguisher with an airworthy portable fire extinguisher. This amendment is prompted by an ongoing investigation that has established that unapproved Halon 1211 has been used to fill L'Hotellier portab…

  Federal Register →

• Apr 29, 2010

  Airworthiness Directives; Eurocopter France (ECF) Model EC120B Helicopters

  This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) 2010-05-51, which was sent previously to all known U.S. owners and operators of ECF Model EC120B helicopters by individual letters. This AD requires, at specified intervals, inspecting the main rotor head rotor hub (rotor hub) for a crack. If you find scoring,…

  Federal Register →

• Dec 11, 2009

  Airworthiness Directives; Eurocopter France Model EC120B Helicopters

  We are adopting a new airworthiness directive (AD) for the Eurocopter France (ECF) Model EC120B helicopters. This AD results from a mandatory continuing airworthiness information (MCAI) AD issued by the European Aviation Safety Agency (EASA), which is the Technical Agent for the Member States of the European Community. The MCAI AD states that operators have…

  Federal Register →

• Jul 15, 2009

  Airworthiness Directives; Turbomeca S.A. ARRIUS 2F Turboshaft Engines

  We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:

  Federal Register →

• Jun 29, 2009

  Airworthiness Directives; Turbomeca S.A. Arrius 2F Turboshaft Engines

  The FAA is superseding an existing airworthiness directive (AD) for Turbomeca S.A. Arrius 2F turboshaft engines that have not incorporated Turbomeca Modification Tf75. That AD currently requires replacing the O-ring on the check valve piston in the lubrication unit at repetitive intervals. This AD requires the same repetitive replacements and would require…

  Federal Register →

• Apr 13, 2009

  Airworthiness Directives; Turbomeca S.A. ARRIUS 2F Turboshaft Engines

  We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as: Rubs between the pipe and…

  Federal Register →

• Jan 22, 2009

  Airworthiness Directives; Turbomeca S.A. Arrius 2F Turboshaft Engines

  The FAA proposes to supersede an existing airworthiness directive (AD) for Turbomeca S.A. Arrius 2F turboshaft engines that have not incorporated Turbomeca Modification Tf75. That AD currently requires replacing the O-ring on the check valve piston in the lubrication unit at repetitive intervals. This proposed AD would require the same repetitive replacemen…

  Federal Register →

• Jul 2, 2008

  Airworthiness Directives; Turbomeca S.A. Arrius 2F Turboshaft Engines

  We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:

  Federal Register →

• May 6, 2008

  Airworthiness Directives; Eurocopter France Model EC120B Helicopters

  We are adopting a new airworthiness directive (AD) for Eurocopter France Model EC120B helicopters. This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on a helicopter. The aviation authority of France, with which we have a bilateral agre…

  Federal Register →

• Aug 28, 2007

  Airworthiness Directives; Turbomeca Arrius 2F Turboshaft Engines

  We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD results from mandatory continuing airworthiness information (MCAI) provided by the aviation authority of France to identify and correct an unsafe condition on Turbomeca Arrius 2F turboshaft engines. The MCAI states the following:

  Federal Register →

• May 22, 2007

  Airworthiness Directives; Turbomeca Arrius 2F Turboshaft Engines

  The FAA is superseding an existing airworthiness directive (AD) for Turbomeca Arrius 2F turboshaft engines. That AD currently requires removing from service certain serial number (SN) fuel control units (FCUs) or replacing the constant delta pressure (delta P) diaphragm in those FCUs. This AD requires replacing all FCUs not incorporating modification Tf 55…

  Federal Register →

• Feb 14, 2007

  Airworthiness Directives; Turbomeca S.A. Arrius 2F Turboshaft Engines

  The FAA is revising an existing airworthiness directive (AD) for Turbomeca S.A. Arrius 2F turboshaft engines. That AD currently requires replacing certain O-rings on the check valve piston in the lubrication unit, at repetitive intervals. This AD requires the same actions except it reduces the applicability from all Turbomeca S.A. Arrius 2F turboshaft engin…

  Federal Register →

• Jan 17, 2007

  Airworthiness Directives; Turbomeca Arrius 2 F Turboshaft Engines

  The FAA proposes to supersede an existing airworthiness directive (AD) for Turbomeca Arrius 2 F turboshaft engines. That AD currently requires removing from service certain serial number (SN) fuel control units (FCUs) or replacing the constant delta pressure diaphragm in those FCUs. This proposed AD would require replacing all FCUs not incorporating modific…

  Federal Register →

• Nov 8, 2006

  Airworthiness Directives; Turbomeca S.A. Arrius 2F Turboshaft Engines

  The FAA proposes to revise an existing airworthiness directive (AD) for Turbomeca S.A. Arrius 2F turboshaft engines. That AD currently requires replacing certain O-rings on the check valve piston in the lubrication unit, at repetitive intervals. This proposed AD would require the same actions except reduce the applicability from all Turbomeca S.A. Arrius 2F…

  Federal Register →

• Jan 19, 2006

  Airworthiness Directives; Turbomeca S.A. Arrius Models 2B, 2B1, and 2F Turboshaft Engines

  The FAA is revising an existing airworthiness directive (AD) for Turbomeca S.A. Arrius Models 2B, 2B1, and 2F turboshaft engines. That AD currently requires replacing the right injector half manifold, left injector half manifold, and privilege injector pipe. This AD requires the same actions, but relaxes the compliance time for the repetitive replacements o…

  Federal Register →

• Sep 16, 2005

  Airworthiness Directives; Turbomeca Arrius 2 F Turboshaft Engines

  The FAA is adopting a new airworthiness directive (AD) for Turbomeca Arrius 2 F turboshaft engines. This AD requires removing from service certain serial number (SN) fuel control units (FCUs) or replacing the constant delta pressure diaphragm in those FCUs. This AD results from a report of an accident in July 2005 involving a Eurocopter EC120B helicopter. W…

  Federal Register →

• Aug 26, 2005

  Airworthiness Directives; Turbomeca S.A. Arrius 2F Turboshaft Engines

  The FAA is adopting a new airworthiness directive (AD) for Turbomeca S.A. Arrius 2F turboshaft engines. This AD requires replacing certain O-rings on the check valve piston in the lubrication unit. This AD results from a report of a forced landing of a Eurocopter EC120B helicopter. We are issuing this AD to prevent an uncommanded in-flight shutdown of the e…

  Federal Register →

• May 27, 2005

  Airworthiness Directives; Turbomeca S.A. Arrius Models 2B, 2B1, and 2F Turboshaft Engines

  The FAA proposes to revise an existing airworthiness directive (AD) for Turbomeca S.A. Arrius Models 2B, 2B1, and 2F turboshaft engines. That AD currently requires replacing the right injector half manifold, left injector half manifold, and privilege injector pipe. This proposed AD would require the same actions, but relaxes the compliance time for the repe…

  Federal Register →

• May 9, 2005

  Airworthiness Directives; Eurocopter France Model EC120 Helicopters

  This amendment adopts a new airworthiness directive (AD) for Eurocopter France (Eurocopter) Model EC120 helicopters that requires inspecting the tail rotor drive shaft (drive shaft) damper half-clamps (half-clamps) to determine if they are centered on the friction ring, and if not correctly positioned, centering the half-clamps on the friction ring. This am…

  Federal Register →

• Feb 10, 2005

  Airworthiness Directives; Eurocopter France Model EC120 Helicopters

  This document proposes adopting a new airworthiness directive (AD) for Eurocopter France (Eurocopter) Model EC120 helicopters. This proposal would require inspecting the tail rotor drive shaft (drive shaft) damper half-clamps (half-clamps) to determine if they are centered on the friction ring, and if not correctly positioned, centering the half-clamps on t…

  Federal Register →

• Nov 5, 2003

  Airworthiness Directives; Eurocopter France Model EC120B Helicopters

  This amendment adopts a new airworthiness directive (AD) for the specified Eurocopter France model helicopters that requires operators to either temporarily or permanently secure the electrical bonding braid (bonding braid) that is installed on the left cyclic pitch control stick base within 10 hours time-in-service (TIS) and, if temporarily secured, instal…

  Federal Register →

• Jul 16, 2003

  Airworthiness Directives; Eurocopter France Model EC120B Helicopters

  This document proposes adopting a new airworthiness directive (AD) for the specified Eurocopter France (Eurocopter) model helicopters. This proposal would require operators to either temporarily or permanently secure the electrical bonding braid (bonding braid) that is installed on the left cyclic pitch control stick base within 10 hours time-in-service (TI…

  Federal Register →

• Apr 17, 2003

  Airworthiness Directives; Eurocopter France Model EC120B Helicopters

  This amendment adopts a new airworthiness directive (AD) for the specified model Eurocopter France (ECF) helicopters that requires inspecting the attachment of the bolted assemblies of the cyclic pitch flight control torque tube (torque tube) for an appropriate locking device. If a bolted assembly is single-locked, the AD requires, if necessary, tightening…

  Federal Register →

• Aug 2, 2002

  Airworthiness Directives; Eurocopter France Model EC120B, EC 155B, SA330F, SA330G, SA330J, AS332C, AS332L, AS332L1, AS332L2, AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350D, AS355E, AS355F, AS355F1, AS355F2, AS355N, AS365N2, AS 365 N3, SA-365N, and SA-365N1 Helicopters

  This amendment adopts a new airworthiness directive (AD) for specified Eurocopter France (ECF) model helicopters. This AD requires determining the load release unit (cargo hook) serial number, measuring the clearance between the locking catch and the cargo hook, and removing unairworthy cargo hooks from service. This amendment is prompted by the discovery o…

  Federal Register →

• Jul 9, 2002

  Airworthiness Directives; Eurocopter France Model EC120B Helicopters

  This amendment adopts a new airworthiness directive (AD) for specified Eurocopter France (ECF) model helicopters that requires installing front and side covers to protect the yaw control. This amendment is prompted by a report of a mobile phone falling between the windshield canopy (canopy) and the cabin floor jamming the yaw control pedal. The actions spec…

  Federal Register →

• Apr 10, 2002

  Airworthiness Directives; Eurocopter France Model EC120B, EC155B, SA330F, SA330G, SA330J, AS332C, AS332L, AS332L1, AS332L2, AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350D, AS355E, AS355F, AS355F1, AS355F2, AS355N, AS365N2, AS365N3, SA-365N, and SA-365N1 Helicopters

  This document proposes adopting a new airworthiness directive (AD) for the specified Eurocopter France (ECF) helicopters. That proposal would require determining the load release unit (cargo hook) serial number, measuring the clearance between the locking catch and the cargo hook, and removing unairworthy cargo hooks from service. This proposal is prompted…

  Federal Register →

• Feb 14, 2002

  Airworthiness Directives; Eurocopter France Model EC120B Helicopters

  This document proposes adopting a new airworthiness directive (AD) for Eurocopter France (ECF) Model EC120B helicopters. This proposal would require installing front and side covers to protect the yaw control. This proposal is prompted by the report of a mobile phone falling between the windshield canopy (canopy) and the cabin floor jamming the yaw control…

  Federal Register →

• Feb 14, 2002

  Airworthiness Directives; Eurocopter France Model EC120B Helicopters

  This document proposes adopting a new airworthiness directive (AD) for Eurocopter France (ECF) Model EC120B helicopters. This proposal would require inspecting the attachment of the bolted assemblies of the cyclic pitch flight control torque tube (torque tube) for an appropriate locking device. If a bolted assembly is single- locked, the proposed AD would r…

  Federal Register →

• Dec 3, 2001

  Airworthiness Directives; Eurocopter France Model EC 120 Helicopters

  This amendment supersedes an existing airworthiness directive (AD) that applies to Eurocopter France (ECF) Model EC120B helicopters and currently requires adjusting the clearance of the cabin sliding door if necessary. This amendment requires adding an end stop to the front rail and modifying the rear stop of the middle rail to increase its adjustment range…

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• Aug 23, 2001

  Airworthiness Directives; Eurocopter France Model EC120B Helicopters

  This document proposes the supersedure of an existing airworthiness directive (AD) for Eurocopter France (ECF) Model EC120B helicopters. That AD currently requires adjusting the clearance of the cabin sliding door if necessary. This action would require adding an end stop to the front rail and modifying the rear stop of the middle rail to increase its adjus…

  Federal Register →

04 /  Service Difficulty Reports

FAA SDR filings

The FAA does not currently expose a public API for Service Difficulty Reports. We do not back-fill or paraphrase. Search the FAA SDR portal directly →

05 /  Sources & Methodology

Every fact on this page links to its primary US-government source

• FAA Aircraft Registry →

  Refreshed May 5, 2026

  Available

• NTSB CAROL →

  Refreshed May 5, 2026

  Available

• Federal Register (FAA Airworthiness Directives) →

  Refreshed May 5, 2026

  Available

• FAA Service Difficulty Reports →

  Refreshed May 5, 2026

  Unavailable

We render only what the agency publishes. Found a factual error? Report it → We acknowledge within 5 business days and resolve within 14.