N820H

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 N820H.

02 /  NTSB Records

Events on file with the National Transportation Safety Board

03 /  Airworthiness Directives

Applicable to BELL HELICOPTER TEXTRON CANADA 206B

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

• Oct 31, 2024

  Airworthiness Directives; Various Helicopters

  The FAA is adopting a new airworthiness directive (AD) for various helicopters modified by certain supplemental type certificates (STCs) that approve the installation of an emergency float kit or an emergency float with a liferaft kit. This AD was prompted by the results of an accident investigation and subsequent reports of difficulty pulling the emergency…

  Federal Register →

• Apr 25, 2024

  Airworthiness Directives; Various Helicopters

  The FAA proposes to adopt a new airworthiness directive (AD) for various helicopters modified by certain supplemental type certificates (STCs) that approve the installation of an emergency float kit or an emergency float with liferaft kit. This proposed AD was prompted by the results of an accident investigation and subsequent reports of difficulty pulling…

  Federal Register →

• Apr 14, 2023

  Airworthiness Directives; Bell Textron Canada Limited Helicopters

  The FAA is adopting a new airworthiness directive (AD) for all Bell Textron Canada Limited Model 206A, 206A-1 (OH-58A), 206B, 206B-1, 206L, 206L-1, 206L-3, and 206L-4 helicopters. This AD was prompted by a loss of tail rotor (TR) drive due to a failure of an adhesively bonded joint between an adapter and a tube on one of the segmented TR drive shaft (TRDS)…

  Federal Register →

• Nov 28, 2022

  Airworthiness Directives; Bell Textron Canada Limited Helicopters

  The FAA proposes to adopt a new airworthiness directive (AD) for all Bell Textron Canada Limited Model 206A, 206A-1 (OH-58A), 206B, 206B-1, 206L, 206L-1, 206L-3, and 206L-4 helicopters. This proposed AD was prompted by a loss of tail rotor (TR) drive due to a failure of an adhesively bonded joint between an adapter and a tube on one of the segmented TR driv…

  Federal Register →

• Nov 18, 2022

  Airworthiness Directives; Bell Textron Canada Limited Helicopters

  The FAA is superseding airworthiness directive (AD) 2021-26- 08, which applied to certain Bell Textron Canada Limited Model 206, 206A, 206A-1, 206B, 206B-1, 206L, 206L-1, 206L-3, and 206L-4 helicopters. AD 2021-26-08 required removing certain nuts from service; installing newly designed nuts; applying a specific torque, and a torque stripe to each newly ins…

  Federal Register →

• Jun 30, 2022

  Airworthiness Directives; Bell Textron Canada Limited Helicopters

  The FAA proposes to supersede Airworthiness Directive (AD) 2021-26-08, which applies to certain Bell Textron Canada Limited Model 206, 206A, 206A-1, 206B, 206B-1, 206L, 206L-1, 206L-3, and 206L-4 helicopters. AD 2021-26-08 requires removing certain nuts from service; installing newly designed nuts; applying a specific torque, and a torque stripe to each new…

  Federal Register →

• Dec 23, 2021

  Airworthiness Directives; Bell Textron Canada Limited Helicopters

  The FAA is adopting a new airworthiness directive (AD) for certain Bell Textron Canada Limited Model 206, 206A, 206A-1, 206B, 206B-1, 206L, 206L-1, 206L-3, and 206L-4 helicopters. This AD was prompted by reports of cracked or missing nuts on the tail rotor drive shaft (TRDS) disc pack (Thomas) couplings. This AD requires removing certain nuts from service,…

  Federal Register →

• Sep 14, 2021

  Airworthiness Directives; Bell Textron Canada Limited

  The FAA proposes to adopt a new airworthiness directive (AD) for certain Bell Textron Canada Limited Model 206, 206A, 206A-1, 206B, 206B-1, 206L, 206L-1, 206L-3, and 206L-4 helicopters. This proposed AD was prompted by reports of cracked or missing nuts on the tail rotor drive shaft (TRDS) disc pack (Thomas) couplings. This proposed AD would require removin…

  Federal Register →

• Sep 8, 2021

  Airworthiness Directives; Bell Textron Canada Limited Helicopters

  The FAA is adopting a new airworthiness directive (AD) for certain Bell Textron Canada Limited Model 206, 206A, 206A-1 (OH-58A), 206B, 206B-1, 206L, 206L-1, 206L-3, 206L-4, 222, 222B, 222U, 230, 407, 427, 429, and 430 helicopters. This AD was prompted by a report of a shoulder harness seat belt comfort clip (comfort clip) interfering with the seat belt iner…

  Federal Register →

• Jul 23, 2021

  Airworthiness Directives; Bell Textron Canada Limited (Type Certificate Previously Held by Bell Helicopter Textron Canada Limited)

  The FAA is adopting a new airworthiness directive (AD) for certain Bell Helicopter Textron Canada Limited (now Bell Textron Canada Limited) Model 206A, 206B, 206L, 206L-1, 206L-3, and 206L-4 helicopters. This AD was prompted by a report that a certain tail rotor disc assembly, sold as an alternate part, does not conform to the approved configuration. This A…

  Federal Register →

• Jul 6, 2021

  Airworthiness Directives; Bell Textron Canada Limited Helicopters

  The FAA proposes to adopt a new airworthiness directive (AD) for Bell Textron Canada Limited (Bell) Model 206, 206A, 206A-1 (OH- 58A), 206B, 206B-1, 206L, 206L-1, 206L-3, 206L-4, 222, 222B, 222U, 230, 407, 427, 429, and 430 helicopters. This proposed AD would require removing each shoulder harness seat belt comfort clip (comfort clip) from service, inspecti…

  Federal Register →

• Jun 10, 2021

  Airworthiness Directives; Bell Textron Canada Limited Helicopters

  The FAA is superseding Airworthiness Directive (AD) 2013-20-13 for certain Bell Helicopter Textron Canada Limited (now Bell Textron Canada Limited) (Bell) Model 206B and 206L helicopters. AD 2013-20-13 required installing a placard beneath the engine power dual tachometer and revising the Operating Limitations section of the existing Rotorcraft Flight Manua…

  Federal Register →

• May 7, 2021

  Airworthiness Directives; Bell Textron Canada Limited (Type Certificate Previously Held by Bell Helicopter Textron Canada Limited)

  The FAA is revising a notice of proposed rulemaking (NPRM) that applied to certain Bell Helicopter Textron Canada Limited (now Bell Textron Canada Limited) Model 206A, 206B, 206L, 206L-1, 206L-3, and 206L-4 helicopters. This action revises the NPRM by revising the format, rearranging certain paragraphs, converting a certain table to paragraph format, and re…

  Federal Register →

• Mar 11, 2021

  Airworthiness Directives; Bell Textron Canada Limited Helicopters

  The FAA proposes to supersede Airworthiness Directive (AD) 2013-20-13 for certain Bell Helicopter Textron Canada Limited (now Bell Textron Canada Limited) (Bell) Model 206B and 206L helicopters. AD 2013-20-13 requires installing a placard beneath the engine power dual tachometer and revising the Operating Limitations section of the existing Rotorcraft Fligh…

  Federal Register →

• Mar 9, 2021

  Airworthiness Directives; Bell Helicopter Textron Canada Helicopters

  The FAA is withdrawing a notice of proposed rulemaking (NPRM) that proposed to adopt a new airworthiness directive (AD) that would have applied to certain Bell Helicopter Textron Canada Model 206A, 206B, and 206B3 helicopters. The NPRM was prompted by the need for corresponding operating limitations prohibiting flight, including hover, with the litter doorp…

  Federal Register →

• May 20, 2019

  Airworthiness Directives; Bell Helicopter Textron Canada Limited Helicopters

  We are adopting a new airworthiness directive (AD) for Bell Helicopter Textron Canada Limited (Bell) Model 206A, 206B, 206L, 206L- 1, 206L-3, 206L-4, and 407 helicopters. This AD requires inspecting and cleaning the oil supply restrictor (restrictor) to the freewheel assembly. This AD was prompted by reports of a blocked oil line restrictor in the freewheel…

  Federal Register →

• Dec 17, 2018

  Airworthiness Directives; Air Comm Corporation Air Conditioning Systems

  We are adopting a new airworthiness directive (AD) for Air Comm Corporation (Air Comm) air conditioning systems installed on various model helicopters. This AD requires replacing electrical connectors and prohibits the installation of other parts. This AD was prompted by reports of overheated connectors. The actions of this AD are intended to address an uns…

  Federal Register →

• Aug 21, 2018

  Airworthiness Directives; Bell Helicopter Textron Canada Limited Helicopters

  We propose to adopt a new airworthiness directive (AD) for Bell Helicopter Textron Canada Limited (Bell) Model 206A, 206B, 206L, 206L-1, 206L-3, 206L-4, and 407 helicopters. This proposed AD would require inspecting and cleaning the oil supply restrictor (restrictor) to the freewheel assembly. This proposed AD is prompted by reports of a blocked oil line re…

  Federal Register →

• Jan 11, 2018

  Airworthiness Directives; Air Comm Corporation Air Conditioning Systems

  We propose to adopt a new airworthiness directive (AD) for Air Comm Corporation (Air Comm) air conditioning systems installed on various model helicopters. This proposed AD would require replacing electrical connectors and would prohibit the installation of other parts. This proposed AD is prompted by reports of overheated connectors. The proposed actions a…

  Federal Register →

• Mar 2, 2017

  Airworthiness Directives; Bell Helicopter Textron Canada Limited Helicopters

  We are adopting a new airworthiness directive (AD) for certain Bell Helicopter Textron Canada Limited (BHTC) Model 206 helicopters. This AD requires removing certain tension-torsion straps (TT straps) from service and is prompted by reports of corroded TT straps. These actions are intended to prevent an unsafe condition on these products.

  Federal Register →

• Nov 5, 2013

  Airworthiness Directives; Bell Helicopter Textron Canada Limited (Bell) Helicopters

  We are adopting a new airworthiness directive (AD) for certain Bell Model 206B and 206L helicopters. This AD requires installing a placard beneath the engine power dual tachometer and revising the operating limitations section of the rotorcraft flight manual (RFM). This AD was prompted by several incidents of third stage engine turbine wheel failures, which…

  Federal Register →

• Sep 12, 2013

  Airworthiness Directives; Bell Helicopter Textron Canada Limited (Bell) Helicopters

  We are adopting a new airworthiness directive (AD) for Bell Model 206A, 206B, 206L, 206L-1, 206L-3, 206L-4, 222, 222B, 222U, 230, 407, 427, and 430 helicopters. This AD requires inspecting each bearing to determine if it has been properly staked and replacing the bearing or assembly if it has not been properly staked. This AD was prompted by bearings not be…

  Federal Register →

• Sep 6, 2013

  Airworthiness Directives; Bell Helicopter Textron Canada Inc. Helicopters

  We are adopting a new airworthiness directive (AD) for certain Bell Helicopter Textron Canada Inc. (BHT) Model 206A, 206B, and 206L helicopters. This AD requires replacing certain part-numbered engine auto-relight kit control boxes. This AD was prompted by a design review that revealed the control box chipset did not meet the required temperature range requ…

  Federal Register →

• Jun 7, 2013

  Airworthiness Directives; Bell Helicopter Textron Canada Limited (Bell) Helicopters

  We propose to adopt a new airworthiness directive (AD) for certain Bell Model 206B and 206L helicopters. This proposed AD would require installing a placard beneath the engine power dual tachometer and revising the operating limitations section of the rotorcraft flight manual (RFM). This proposed AD is prompted by several incidents of third stage engine tur…

  Federal Register →

• May 13, 2013

  Airworthiness Directives; Bell Helicopter Textron Canada Limited (Bell) Model Helicopters

  We propose to adopt a new airworthiness directive (AD) for Bell Model 206A, 206B, 206L, 206L-1, 206L-3, 206L-4, 222, 222B, 222U, 230, 407, 427, and 430 helicopters. This proposed AD would require inspecting each bearing to determine if it has been properly staked and replacing the bearing or assembly if it has not been staked properly. This proposed AD is p…

  Federal Register →

• Apr 22, 2013

  Airworthiness Directives; Bell Helicopter Textron Canada Inc. Helicopters

  We propose to adopt a new airworthiness directive (AD) for certain Bell Helicopter Textron Canada Inc. (BHT) Model 206A, 206B, and 206L helicopters. This proposed AD would require replacing certain part-numbered engine auto-relight kit control boxes. This proposed AD is prompted by a design review that revealed the control box chipset did not meet the requi…

  Federal Register →

• Jun 19, 2012

  Airworthiness Directives; Bell Helicopter Textron Canada, Limited, Helicopters

  We are adopting a new airworthiness directive (AD) for Bell Helicopter Textron Canada (Bell) Model 206, 206A, 206A-1, 206B, 206B-1, 206L, 206L-1, 206L-3, and 206L-4 helicopters, with Aviation Specialties Unlimited, Inc. (ASU), Night Vision Imaging System (NVIS) lighting modified by Supplemental Type Certificate SR01383SE (STC). This AD requires determining…

  Federal Register →

• Feb 3, 2012

  Airworthiness Directives; Bell Helicopter Textron Canada, Limited (Bell) Helicopters

  We propose to adopt a new airworthiness directive (AD) for the Bell Model 206, 206A, 206A-1, 206B, 206B-1, 206L, 206L-1, 206L-3, and 206L-4 helicopters with Aviation Specialties Unlimited Inc. (ASU) Night Vision Imaging System (NVIS) lighting modified by Supplemental Type Certificate SR01383SE (STC). This proposed AD is prompted by the finding that an unfil…

  Federal Register →

• May 13, 2011

  Airworthiness Directives; Bell Helicopter Textron Canada (Bell) Model 206A, 206B, and 206B3 Helicopters

  We propose to adopt a new airworthiness directive (AD) for the specified Bell model helicopters. This proposed AD would require revising the Operating Limitations, Section 1, of the Rotorcraft Flight Manual (RFM) to add an operating limitation when a litter kit is installed. This proposed AD is prompted by the need for corresponding operating limitations pr…

  Federal Register →

• Mar 10, 2011

  Airworthiness Directives; Bell Helicopter Textron Canada Limited (BHTC) Model 206A, 206B, 206L, 206L-1, 206L-3, 206L-4, 222, 222B, 222U, 230, 407, 427, and 430 Helicopters

  This document publishes in the Federal Register an amendment adopting Emergency Airworthiness Directive (AD) 2010-26-51, which was sent previously to all known U.S. owners and operators of the specified model helicopters by individual letters. This AD also supersedes existing AD 2009-08-03. This AD is prompted by another incident in which the tail rotor bla…

  Federal Register →

• Aug 30, 2010

  Airworthiness Directives; Bell Helicopter Textron Canada Limited Models 206A, 206B, 206L, 206L-1, 206L-3, and 206L-4 Helicopters

  We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD results from mandatory continuing airworthiness information (MCAI) originated 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 →

• Apr 16, 2009

  Airworthiness Directives; Bell Helicopter Textron Canada Limited Model 206A Series, 206B Series, 206L Series, 407, and 427 Helicopters

  This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) 2009-07-52 and supersedes Emergency AD 2009-07-51, issued March 17, 2009, which was sent previously to all known U.S. owners and operators of Bell Helicopter Textron Canada Limited (Bell) Model 206A series, 206B series, 206L series, 407, and 427 helicopters by…

  Federal Register →

• Apr 9, 2009

  Airworthiness Directives; Bell Helicopter Textron Canada Limited Model 206A, 206B, 206L, 206L-1, 206L-3, 206L-4, 222, 222B, 222U, 230, 407, 427, and 430 Helicopters

  We are adopting a superseding airworthiness directive (AD) for the specified Bell Helicopter Textron Canada Limited (BHTC) Model 206A, 206B, 206L, 206L-1, 206L-3, 206L-4, 222, 222B, 222U, 230, 407, 427, and 430 helicopters. That AD currently requires replacing each affected tail rotor blade (blade) with an airworthy blade that has a serial number not listed…

  Federal Register →

• Jul 10, 2008

  Airworthiness Directives; Bell Helicopter Textron Canada Model 206A, 206B, 206L, 206L-1, 206L-3, and 206L-4 Helicopters

  We are adopting a new airworthiness directive (AD) for the specified Bell Helicopter Textron Canada (BHTC) Model 206A, 206B, 206L, 206L-1, 206L-3, and 206L-4 helicopters. This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority to identify and correct an unsafe condition on an aviation product. The aviat…

  Federal Register →

• Jan 23, 2008

  Airworthiness Directives; Bell Helicopter Textron Canada (BHTC) Models 206A, 206B, 206L, 206L-1, 206L-3, and 206L-4 Helicopters

  We propose to adopt a new airworthiness directive (AD) for the specified BHTC model helicopters. This proposed AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The aviation authority of Canada, with which we have a…

  Federal Register →

• Dec 10, 2007

  Airworthiness Directives; Bell Helicopter Textron Canada Limited Model 206A and 206B Helicopters

  This amendment adopts a new airworthiness directive (AD) for Bell Helicopter Textron Canada Limited (BHTC) Model 206A and 206B helicopters, serial numbers (S/N) 0004 through 3906, with two-piece vertical stabilizer (fin) supports (fin supports) installed, that requires inserting a revision into the applicable maintenance manual, verifying the torque on the…

  Federal Register →

• Nov 21, 2007

  Airworthiness Directives; Bell Helicopter Textron Canada Model 206A and 206B Helicopters

  We are adopting a new airworthiness directive (AD) for Bell Helicopter Textron Canada (BHTC) Model 206A and 206B helicopters. This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority to identify and correct an unsafe condition on an aviation product. The aviation authority of Canada, with which we have a…

  Federal Register →

• Nov 20, 2007

  Airworthiness Directives; Bell Helicopter Textron Canada Limited Model 206A, 206B, 206L, 206L-1, 206L-3, 206L-4, 222, 222B, 222U, 230, 407, 427, and 430 Helicopters

  This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) 2007-19-52, which was sent previously to all known U.S. owners and operators of the specified Bell Helicopter Textron Canada Limited (BHTC) model helicopters by individual letters. This AD requires replacing each affected tail rotor blade (blade) with an airwo…

  Federal Register →

• Oct 22, 2007

  Airworthiness Directives; Bell Helicopter Textron Canada Model 206A and 206B Series Helicopters

  We are adopting a new airworthiness directive (AD) for Bell Helicopter Textron Canada (Bell) Model 206A and 206B series helicopters. This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority to identify and correct an unsafe condition on an aviation product. The aviation authority of Canada, with which we…

  Federal Register →

• Jul 13, 2007

  Airworthiness Directives; Bell Helicopter Textron Canada Limited Model 206A and 206B Helicopters

  This document proposes adopting a new airworthiness directive (AD) for Bell Helicopter Textron Canada Limited (BHTC) Model 206A and 206B helicopters, serial numbers (S/N) 0004 through 3906, with two- piece vertical stabilizer (fin) supports (fin supports) installed. This proposal would require inserting a revision into the applicable maintenance manual, ver…

  Federal Register →

• Aug 3, 2006

  Airworthiness Directives; Rolls-Royce Corporation (Formerly Allison Engine Company, Allison Gas Turbine Division, and Detroit Diesel Allison) (RRC) 250-B and 250-C Series Turboshaft and Turboprop Engines

  The FAA is superseding an existing airworthiness directive (AD) for RRC 250-B and 250-C series turboshaft and turboprop engines. That AD currently requires a onetime inspection of the fuel nozzle screen for contamination, and if contamination is found, inspection and cleaning of the entire aircraft fuel system before further flight. That AD also requires re…

  Federal Register →

• Oct 18, 2005

  Airworthiness Directives; Rolls-Royce Corporation (Formerly Allison Engine Company, Allison Gas Turbine Division, and Detroit Diesel Allison) (RRC) 250-B and 250-C Series Turboshaft and Turboprop Engines

  The FAA proposes to supersede an existing airworthiness directive (AD) for certain RRC 250-B and 250-C series turboshaft and turboprop engines. That AD currently requires a onetime inspection of the fuel nozzle screen for contamination, and if contamination is found, inspection and cleaning of the entire aircraft fuel system before further flight. That AD a…

  Federal Register →

• Dec 1, 2004

  Airworthiness Directives; Rolls-Royce Corporation (Formerly Allison Engine Company, Allison Gas Turbine Division, and Detroit Diesel Allison) (RRC) 250-B and 250-C Series Turboshaft and Turboprop Engines

  The FAA is adopting a new airworthiness directive (AD) for certain RRC 250-B and 250-C series turboshaft and turboprop engines. This AD requires a onetime inspection of the fuel nozzle screen for contamination, and if contamination is found, inspection and cleaning of the entire aircraft fuel system before further flight. This AD also requires replacing the…

  Federal Register →

• May 7, 2004

  Airworthiness Directives; Rolls-Royce Corporation (Formerly Allison Engine Company, Allison Gas Turbine Division, and Detroit Diesel Allison) (RRC) 250-B and 250-C Series Turboshaft and Turboprop Engines

  The FAA proposes to adopt a new airworthiness directive (AD) for certain RRC 250-B and 250-C series turboshaft and turboprop engines. This proposed AD would require a one-time inspection of the fuel nozzle screen for contamination, and if contamination is found, inspection and cleaning of the entire aircraft fuel system before further flight. This proposed…

  Federal Register →

• Jul 8, 2003

  Airworthiness Directives; Bell Helicopter Textron Canada Model 206A, 206A-1, 206B, 206B-1, 206L, 206L-1, 206L-3, and 206L-4 Helicopters

  This amendment adopts a new airworthiness directive (AD) for the specified Bell Helicopter Textron Canada (BHTC) model helicopters that requires performing a continuity test, temporarily repairing any unairworthy chip detector, and replacing any repaired chip detectors. This amendment is prompted by reports of poor or no continuity between the insert and th…

  Federal Register →

• Oct 21, 2002

  Airworthiness Directives; Bell Helicopter Textron, A Division of Textron Canada Model 206A, 206A-1, 206B, 206B-1, 206L, 206L-1, 206L-3, and 206L-4 Helicopters

  This document proposes adopting a new airworthiness directive (AD) for Bell Helicopter Textron, A Division of Textron Canada (BHT) Model 206A, 206A-1, 206B, 206B-1, 206L, 206L-1, 206L-3, and 206L-4 helicopters. This proposal would require performing a continuity test, and repairing temporarily any unairworthy chip detector, and replacing any repaired chip d…

  Federal Register →

• Feb 2, 2001

  Airworthiness Directives; Bell Helicopter Textron Canada Model 206A, B, L, L1, and L3 Helicopters

  This amendment adopts a new airworthiness directive (AD) for Bell Helicopter Textron Canada (BHTC) Model 206A, B, L, L1, and L3 helicopters. This AD requires inspecting the collective lever assembly (assembly) for a raised forging boss, inspecting the assembly for adequate clearance between the collective lever and the swashplate outer ring (outer ring), an…

  Federal Register →

• Sep 11, 2000

  Airworthiness Directives; Bell Helicopter Textron Canada Model 206A, B, L, L1, and L3 Helicopters

  This document proposes the adoption of a new airworthiness directive (AD) for Bell Helicopter Textron Canada (BHTC) Model 206A, B, L, L1, and L3 helicopters. This proposal would require inspecting the collective lever assembly (assembly) for a raised forging boss, inspecting the assembly for adequate clearance between the collective lever and the swashplate…

  Federal Register →

• Apr 25, 2000

  Airworthiness Directives; Allison Engine Company 250-C18 and -C20 Series Turboshaft Engines

  This document proposes to adopt a new airworthiness directive (AD), applicable to Allison Engine Company 250-C18 and -C20 series turboshaft engines. This proposal would require a one-time visual inspection of the fuel nozzle screen for contamination. If contamination is found, this proposal would require, prior to further flight, replacement of the fuel noz…

  Federal Register →

• Dec 3, 1998

  Airworthiness Directives; Allison Engine Company 250-B and 250-C Series Turboshaft and Turboprop Engines

  This amendment adopts a new airworthiness directive (AD), applicable to certain Allison Engine Company 250-B and 250-C series turboshaft and turboprop engines, that requires replacing existing beryllium copper main fuel control (MFC) bellows assemblies with Inconel 718 stainless steel welded MFC bellows assemblies. This amendment is prompted by reports of l…

  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.