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Public Record · As of May 5, 2026

N4981P

Piper PA-23-235 · 1963 View Type →

Status

Registration Valid

Type

Fixed Wing Multi Engine

Engine

LYCOMING 0-540 SERIES

Last Cert Issue

02 /  NTSB Records

Events on file with the National Transportation Safety Board

03 /  Airworthiness Directives

Applicable to PIPER PA-23-235

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

  • Jun 12, 2023

    Airworthiness Directives; Various Airplanes, Helicopters, and Engines

    The FAA is adopting a new airworthiness directive (AD) for turbocharged, reciprocating engine-powered airplanes and helicopters and turbocharged, reciprocating engines with a certain v-band coupling installed. This AD was prompted by multiple failures of spot-welded, multi-segment v-band couplings at the tailpipe to the turbocharger exhaust housing flange (…

    Federal Register →
  • Oct 31, 2022

    Airworthiness Directives; Piper Aircraft, Inc. (Type Certificate Previously Held by The New Piper Aircraft Inc. and Piper Aircraft Corporation) Airplanes

    The FAA is withdrawing a notice of proposed rulemaking (NPRM) and supplemental notice of proposed rulemaking (SNPRM) that proposed to supersede Airworthiness Directive (AD) 92-13-04 for certain Piper Aircraft Corporation (now Piper Aircraft, Inc.) (Piper) Model PA-23-150 (type certificated as PA-23) and PA-23-160 airplanes. AD 92-13-04 requires preflight wa…

    Federal Register →
  • Aug 17, 2020

    Airworthiness Directives; Aspen Avionics, Inc.

    The FAA is correcting an airworthiness directive (AD) that published in the Federal Register. The AD applies to certain Aspen Avionics, Inc., Evolution Flight Display (EFD) EFD1000 Emergency Backup Display, EFD1000 Multi-Function Display, and EFD1000 Primary Flight Display systems installed on various airplanes. As published, the docket number and product i…

    Federal Register →
  • Jul 31, 2020

    Airworthiness Directives; Aspen Avionics, Inc.

    The FAA is adopting a new airworthiness directive (AD) for certain Aspen Avionics, Inc., Evolution Flight Display (EFD) EFD1000 Emergency Backup Display, EFD1000 Multi-Function Display, and EFD1000 Primary Flight Display systems installed on various airplanes. This AD imposes operating restrictions on these display systems by revising the Limitations sectio…

    Federal Register →
  • Jan 23, 2019

    Airworthiness Directives; Aspen Avionics, Inc., Evolution Flight Display Units

    We are adopting a new airworthiness directive (AD) for certain Aspen Avionics, Inc. (Aspen), Evolution Flight Display (EFD) EFD1000 Primary Flight Display (PFD), EFD1000 Multi-Function Display (MFD), EFD1000 Emergency Backup Display (EBD), and EFD500 MFD units installed on various aircraft. This AD requires disabling the Automatic Dependent Surveillance-Bro…

    Federal Register →
  • Jul 24, 2017

    Airworthiness Directives; Piper Aircraft, Inc. Airplanes

    We are superseding Airworthiness Directive (AD) 69-13-03 for all Piper Aircraft, Inc. Models PA-23, PA-23-160, PA-23-235, PA-23-250, PA-E23-250, and PA-30 airplanes. AD 69-13-03 required inspection of the heater exhaust extension, replacement of the extension as necessary, and overhaul of the combustion heater assembly. This AD retains the inspection of the…

    Federal Register →
  • Mar 2, 2017

    Airworthiness Directives; Piper Aircraft, Inc. Airplanes

    We propose to supersede Airworthiness Directive (AD) 69-13-03, which applies to all Piper Aircraft, Inc. Models PA-23, PA-23-160, PA- 23-235, PA-23-250, PA-E23-250, and PA-30 airplanes. AD 69-13-03 currently requires inspection of the heater exhaust extension, replacement of the extension as necessary, and overhaul of the combustion heater assembly. Since w…

    Federal Register →
  • Sep 29, 2011

    Airworthiness Directives; Piper Aircraft, Inc. Airplanes

    We are revising an existing airworthiness directive (AD) for certain Piper Aircraft, Inc. Models PA-23, PA-23-160, PA-23-235, PA-23- 250, PA-23-250 (Navy UO-1), PA-E23-250, PA-31, PA-31-300, PA-31-325, PA-31-350, PA-31P, PA-31P-350, PA-31T, PA-31T1, PA-31T2, PA-31T3, PA- 42, PA-42-720, and PA-42-1000 airplanes that are equipped with a baggage door in the fu…

    Federal Register →
  • Aug 12, 2011

    Airworthiness Directives; Lycoming Engines (L)O-360, (L)IO-360, AEIO-360, O-540, IO-540, AEIO-540, (L)TIO-540, IO-580, and IO-720 Series Reciprocating Engines

    We propose to supersede an existing airworthiness directive (AD) that applies to the products listed above. The existing AD currently requires replacing certain crankshafts. Since we issued that AD, Lycoming Engines discovered that the start date of affected engine models in Mandatory Service Bulletin (MSB) No. 569A, is incorrect. This proposed AD would cor…

    Federal Register →
  • May 20, 2011

    Airworthiness Directives; Piper Aircraft, Inc. PA-23, PA-31, and PA-42 Airplanes

    We propose to revise an existing airworthiness directive (AD) that applies to Piper Aircraft, Inc. PA-23, PA-31, and PA-42 airplanes. The existing AD currently establishes life limits for safety-critical nose baggage door components. That AD also requires you to replace those safety-critical nose baggage door components and repetitively inspect and lubricat…

    Federal Register →
  • Dec 31, 2009

    Airworthiness Directives; Engine Components, Inc. (ECi) Reciprocating Engine Cylinder Assemblies

    The FAA is superseding an existing airworthiness directive (AD) for Lycoming Engines (formerly Textron Lycoming) models 320, 360, and 540 series, "Parallel Valve" reciprocating engines, with certain Engine Components, Inc. (ECi) cylinder assemblies, part number (P/N) AEL65102 series "Titan," installed. That AD currently requires initial and repetitive visua…

    Federal Register →
  • Jul 30, 2009

    Airworthiness Directives; Engine Components, Inc. (ECi) Reciprocating Engine Cylinder Assemblies

    The FAA proposes to supersede an existing airworthiness directive (AD) for Lycoming Engines (formerly Textron Lycoming) models 320, 360, and 540 series, "Parallel Valve" reciprocating engines, with certain Engine Components, Inc. (ECi) cylinder assemblies, part number (P/N) AEL65102 series "Titan," installed. That AD currently requires initial and repetitiv…

    Federal Register →
  • Jun 19, 2009

    Airworthiness Directives; Piper Aircraft, Inc. PA-23, PA-31, and PA-42 Series Airplanes

    We are adopting a new airworthiness directive (AD) for certain Piper Aircraft, Inc. (Piper) PA-23 series airplanes and all PA-31 and PA-42 series airplanes. This AD establishes life limits for safety- critical nose baggage door components. This AD also requires you to replace those safety-critical nose baggage door components and repetitively inspect and lu…

    Federal Register →
  • Mar 10, 2009

    Airworthiness Directives; Piper Aircraft, Inc. PA-23, PA-31, and PA-42 Series Airplanes

    We propose to adopt a new airworthiness directive (AD) for certain Piper Aircraft, Inc. (Piper) PA-23 series airplanes and all PA- 31 and PA-42 series airplanes. This proposed AD would establish life limits for safety-critical nose baggage door components. This proposed AD would also require you to replace those safety-critical nose baggage door components…

    Federal Register →
  • Sep 15, 2008

    Airworthiness Directives; Engine Components, Inc. (ECi) Reciprocating Engine Cylinder Assemblies

    The FAA is adopting a new airworthiness directive (AD) for Lycoming Engines (formerly Textron Lycoming) models 320, 360, and 540 series, "Parallel Valve" reciprocating engines, with certain Engine Components, Inc. (ECi) cylinder assemblies, part number (P/N) AEL65102 series "Titan", installed. This AD requires initial and repetitive visual inspections and c…

    Federal Register →
  • May 19, 2008

    Airworthiness Directives; Engine Components Inc. (ECi) Reciprocating Engine Cylinder Assemblies

    The FAA proposes to adopt a new airworthiness directive (AD) for Lycoming Engines (formerly Textron Lycoming) models 320, 360, and 540 series, "Parallel Valve" reciprocating engines, with certain Engine Components Inc. (ECi) cylinder assemblies, part number (P/N) AEL65102 series "Titan", installed. This proposed AD would require initial and repetitive visua…

    Federal Register →
  • Apr 2, 2007

    Airworthiness Directives; Superior Air Parts, Inc. (SAP), Cylinder Assemblies Part Numbers Series: SA47000L, SA47000S, SA52000, SA55000, SL32000W, SL32000WH, SL32006W, SL36000TW, SL36000W, and SL36006W

    The FAA is revising an existing airworthiness directive (AD) for certain SAP cylinder assemblies installed in Teledyne Continental Motors (TCM) 470, 520, and 550 series reciprocating engines, Lycoming Engines (LE) 320, 360, and 540 series reciprocating engines, Avco Lycoming (AL) 540 series reciprocating engines, and Superior Air Parts, Inc. (SAP) 360 serie…

    Federal Register →
  • Feb 23, 2007

    Airworthiness Directives; Superior Air Parts, Inc. (SAP), Cast Cylinder Assemblies Part Numbers Series: SA47000L, SA47000S, SA52000, SA55000, SL32000W, SL32000WH, SL32006W, SL36000TW, SL36000W, and SL36006W

    The FAA is adopting a new airworthiness directive (AD) for certain SAP cast cylinder assemblies installed in Teledyne Continental Motors (TCM) 470, 520, and 550 series reciprocating engines, Lycoming Engines (LE) 320, 360, and 540 series reciprocating engines, Avco Lycoming (AL) 540 series reciprocating engines, and Superior Air Parts, Inc. (SAP) 360 series…

    Federal Register →
  • Sep 29, 2006

    Airworthiness Directives; Lycoming Engines (L)O-360, (L)IO-360, AEIO-360, O-540, IO-540, AEIO-540, (L)TIO-540, IO-580, and IO-720 Series Reciprocating Engines.

    The FAA is adopting a new airworthiness directive (AD) for certain Lycoming Engines (L)O-360, (L)IO-360, AEIO-360, O-540, IO-540, AEIO-540, (L)TIO-540, IO-580, and IO-720 series reciprocating engines. This AD requires replacing certain crankshafts. This AD results from reports of 23 confirmed failures of similar crankshafts in Lycoming Engines 360 and 540 s…

    Federal Register →
  • Jun 6, 2006

    Airworthiness Directives; Engine Components Inc. (ECi) Reciprocating Engine Cylinder Assemblies

    The FAA is superseding an existing airworthiness directive (AD) for Lycoming Engines (formerly Textron Lycoming) models 320, 360, and 540 series, "Parallel Valve" reciprocating engines, with certain Engine Components Inc. (ECi) cylinder assemblies, part number (P/N) AEL65102 series "Classic Cast", installed. That AD currently requires replacing these ECi cy…

    Federal Register →
  • May 18, 2006

    Airworthiness Directives; Engine Components Incorporated (ECi) Reciprocating Engine Connecting Rods

    The FAA is adopting a new airworthiness directive (AD) for certain Lycoming Engines (formerly Textron Lycoming) 360 and 540 series reciprocating engines with ECi connecting rods, part number (P/N) AEL11750, installed. The Airmotive Engineering Corp, Division of Engine Components Incorporated (ECi), holds the Parts Manufacturer Approval (PMA) for the affecte…

    Federal Register →
  • Feb 24, 2006

    Airworthiness Directives; Engine Components Inc. (ECi) Reciprocating Engine Cylinder Assemblies

    The FAA proposes to supersede an existing airworthiness directive (AD) for Lycoming Engines (formerly Textron Lycoming) models 320, 360, and 540 series, "Parallel Valve" reciprocating engines, with certain Engine Components Inc. (ECi) cylinder assemblies, part number (P/N) AEL65102 series "Classic Cast", installed. That AD currently requires replacing these…

    Federal Register →
  • Feb 7, 2006

    Airworthiness Directives; Aero Advantage ADV200 Series (Part Numbers ADV211CC and ADV212CW) Vacuum Pumps

    The FAA adopts a new airworthiness directive (AD) for all airplanes equipped with Aero Advantage ADV200 series (part numbers ADV211CC and ADV212CW) vacuum pumps installed under supplemental type certificate number SA10126SC, through field approval, or other methods. This AD requires you to remove from service any affected vacuum pump and install an FAA-appr…

    Federal Register →
  • Dec 27, 2005

    Airworthiness Directives; Engine Components Inc. (ECi) Reciprocating Engine Cylinder Assemblies

    The FAA is adopting a new airworthiness directive (AD) for Lycoming Engines (formerly Textron Lycoming) models 320, 360, and 540 series, "Parallel Valve" reciprocating engines, with certain Engine Components Inc. (ECi) cylinder assemblies, part number (P/N) AEL65102 series "Classic Cast", installed. This AD requires replacing these ECi cylinder assemblies.…

    Federal Register →
  • Oct 5, 2005

    Airworthiness Directives; Engine Components Incorporated (ECi) Reciprocating Engine Connecting Rods

    The FAA proposes to adopt a new airworthiness directive (AD) for certain Lycoming Engines (formerly Textron Lycoming) 360 and 540 series reciprocating engines with ECi connecting rods, part number (P/ N) AEL 11750, installed. This proposed AD would require replacing certain serial-numbered connecting rods, P/N AEL 11750. This proposed AD would also prohibit…

    Federal Register →
  • Sep 16, 2005

    Airworthiness Directives; Lycoming Engines (Formerly Textron Lycoming) AEIO-360, IO-360, O-360, LIO-360, LO-360, AEIO-540, IO-540, O-540, and TIO-540 Series Reciprocating Engines

    The FAA is adopting a new airworthiness directive (AD) for certain Lycoming Engines (formerly Textron Lycoming) AEIO-360, IO-360, O-360, LIO-360, LO-360, AEIO-540, IO-540, O-540, and TIO-540 series reciprocating engines rated at 300 horsepower (HP) or lower. This AD requires replacing certain crankshafts. This AD results from reports of 12 crankshaft failur…

    Federal Register →
  • Sep 9, 2005

    Airworthiness Directives; Engine Components Inc. (ECi) Reciprocating Engine Cylinder Assemblies

    The FAA proposes to adopt a new airworthiness directive (AD) for Lycoming Engines (formerly Textron Lycoming) models 320, 360, and 540 series, "Parallel Valve" reciprocating engines, with certain Engine Components Inc. (ECi) cylinder assemblies, part number (P/N) AEL65102 series "Classic Cast," installed. This proposed AD would require replacing these ECi c…

    Federal Register →
  • Jul 22, 2005

    Airworthiness Directives; Lycoming Engines (Formerly Textron Lycoming) AEIO-360, IO-360, O-360, LIO-360, LO-360, AEIO-540, IO-540, O-540, and TIO-540 Series Reciprocating Engines

    The FAA proposes to adopt a new airworthiness directive (AD) for certain Lycoming Engines (formerly Textron Lycoming) AEIO-360, IO- 360, O-360, LIO-360, LO-360, AEIO-540, IO-540, O-540, and TIO-540 series reciprocating engines rated at 300 horsepower (HP) or lower. This proposed AD would require replacing certain crankshafts. This proposed AD results from r…

    Federal Register →
  • May 11, 2005

    Airworthiness Directives; Aero Advantage ADV200 Series (Part Numbers ADVPL211CC and ADVPL212CW) Vacuum Pumps

    The FAA proposes to adopt a new airworthiness directive (AD) for all airplanes equipped with Aero Advantage ADV200 series (part numbers ADVPL211CC and ADVPL212CW) vacuum pumps installed under supplemental type certificate number SA10126SC, through field approval, or other methods. This proposed AD would require you to remove any affected vacuum pump and rel…

    Federal Register →
  • Jan 19, 2005

    Airworthiness Directives; GARMIN International Inc. GTX 33, GTX 33D, GTX 330, and GTX 330D Mode S Transponders

    The FAA is adopting a new airworthiness directive (AD) to supersede Airworthiness Directive 2004-10-15, which applies to certain GTX 330 and GTX 330D Mode S transponders that are installed on airplanes. AD 2004-10-15 currently requires you to install GTX 330/330D Software Upgrade Version 3.03, 3.04, or 3.05. This AD applies to certain GTX 33, GTX 33D, GTX 3…

    Federal Register →
  • Jan 7, 2005

    Airworthiness Directives; The New Piper Aircraft, Inc. Models PA-23-235, PA-23-250, and PA-E23-250 Airplanes

    The FAA adopts a new airworthiness directive (AD) that supersedes Airworthiness Directive (AD) 74-06-01, which applies to certain The New Piper Aircraft, Inc. (Piper) Models PA-23-235, PA-23- 250, and PA-E23-250 airplanes equipped with Garrett Aviation Services (Garrett) (formerly AiResearch) turbosuperchargers installed under supplemental type certificate…

    Federal Register →
  • Oct 7, 2004

    Airworthiness Directives; GARMIN International Inc. GTX 33, GTX 33D, GTX 330, and GTX 330D Mode S Transponders

    The FAA proposes to supersede Airworthiness Directive (AD) 2004-10-15, which applies to certain GTX 330 and GTX 330D Mode S transponders that are installed on airplanes. AD 2004-10-15 currently requires you to install GTX 330/330D Software Upgrade Version 3.03, 3.04, or 3.05. This proposed AD applies to certain GTX 33, GTX 33D, GTX 330, and GTX 330D Mode S…

    Federal Register →
  • Sep 22, 2004

    Airworthiness Directives; The New Piper Aircraft, Inc. Models PA-23-235, PA-23-250, and PA-E23-250 Airplanes

    The FAA proposes to supersede Airworthiness Directive (AD) 74- 06-01, which applies to certain The New Piper Aircraft, Inc. (Piper) Models PA-23-235, PA-23-250, and PA-E23-250 airplanes equipped with Garrett Aviation Services (Garrett) (formerly AiResearch) turbosuperchargers installed under supplemental type certificate (STC) SA852WE, SA909WE, or SA978WE;…

    Federal Register →
  • May 21, 2004

    Airworthiness Directives; GARMIN International Inc. GTX 330 Mode S Transponders and GTX 330D Diversity Mode S Transponders

    The FAA adopts a new airworthiness directive (AD) for certain GARMIN International Inc. GTX 330/GTX 330D Mode S transponders that are installed on aircraft. This AD requires you to install GTX 330/330D Software Upgrade Version 3.03, 3.04, or 3.05. This AD is the result of observations that the GTX 330 and GTX 330D may detect, from other aircraft, the S1 (su…

    Federal Register →
  • Mar 15, 2004

    Airworthiness Directives; Lycoming Engines (Formerly Textron Lycoming) AEIO-540, IO-540, LTIO-540, O-540, and TIO-540 Series Reciprocating Engines

    The FAA is superseding an existing airworthiness directive (AD) for Lycoming Engines (Formerly Textron Lycoming) AEIO-540, IO-540, LTIO-540, O-540, and TIO-540 series reciprocating engines. That action requires replacing certain zinc-plated crankshaft gear retaining bolts. This action retains that requirement, but expands the population of affected engines.…

    Federal Register →
  • Dec 30, 2003

    Airworthiness Directives; GARMIN International Inc. GTX 330 Mode S Transponders and GTX 330D Diversity Mode S Transponders

    The FAA proposes to adopt a new airworthiness directive (AD) for certain GARMIN International Inc. GTX 330/GTX 330D Mode S transponders. This proposed AD would require you to install GTX 330/ 330D Software Upgrade Version 3.03. This proposed AD is the result of observations that the GTX 330 and GTX 330D may detect, from other aircraft, the S1 (suppression)…

    Federal Register →
  • May 9, 2003

    Airworthiness Directives; the New Piper Aircraft, Inc. Models PA-23, PA-23-160, PA-23-235, PA-23-250, and PA-E23-250 Airplanes

    This amendment adopts a new airworthiness directive (AD) that applies to certain The New Piper Aircraft, Inc. (Piper) Models PA-23, PA-23-160, PA-23-235, PA-23-250, and PA-E23-250 airplanes that do not incorporate a certain design flap control torque tube or torque tube assembly. This AD requires you to repetitively inspect the flap control torque tube for…

    Federal Register →
  • Jan 27, 2003

    Airworthiness Directives; The New Piper Aircraft, Inc. Models PA-23, PA-23-160, PA-23-235, PA-23-250, and PA-E23-250 Airplanes

    This document proposes to adopt a new airworthiness directive (AD) that would apply to certain The New Piper Aircraft, Inc. (Piper) Models PA-23, PA-23-160, PA-23-235, PA-23-250, and PA-E23-250 airplanes that do not incorporate a certain design flap control torque tube or torque tube assembly. This proposed AD would require you to repetitively inspect the f…

    Federal Register →
  • Nov 14, 2002

    Airworthiness Directives; Textron Lycoming AEIO-540, IO-540, LTIO-540, O-540, and TIO-540 Series Reciprocating Engines

    This amendment supersedes an emergency airworthiness directive (AD) that was sent previously to all known U.S. owners and operators of Textron Lycoming (T/L) AEIO-540, IO-540, LTIO-540, O-540, and TIO-540 series reciprocating engines. That action requires replacing certain zinc-plated crankshaft gear retaining bolts. This action still requires replacing cer…

    Federal Register →
  • Oct 29, 1999

    Airworthiness Directives; Bob Fields Aerocessories Inflatable Door Seals

    This document proposes to revise Airworthiness Directive (AD) 98-21-21, which currently requires de-activating the electric door seal inflation system for all aircraft equipped with Bob Fields Aerocessories inflatable door seals. Since issuance of that AD, the manufacturer has developed a modification that would allow these electric door seal inflation syst…

    Federal Register →
  • Jun 28, 1999

    Airworthiness Directives; The New Piper Aircraft, Inc. PA-23, PA- 30, PA-31, PA-34, PA-39, PA-40, and PA-42 Series Airplanes

    This amendment supersedes Airworthiness Directive (AD) 98-04- 27, which currently requires incorporating certain icing information into the FAA-approved airplane flight manual (AFM) of The New Piper Aircraft, Inc. (Piper) PA-23, PA-30, PA-31, PA-34, PA-39, PA-40, and PA-42 series airplanes. The Federal Aviation Administration (FAA) inadvertently omitted Pip…

    Federal Register →
  • Mar 3, 1999

    Airworthiness Directives; The New Piper Aircraft, Inc. PA-23, PA- 24, PA-28, PA-32, and PA-34 Series Airplanes

    This amendment adopts a new airworthiness directive (AD) that applies to certain The New Piper Aircraft, Inc. (Piper) PA-23, PA-24, PA-28, PA-32, and PA-34 series airplanes that incorporate certain Facet (manufactured by the Purolator Products Company) induction air filters. This AD requires replacing these induction air filters. This AD results from report…

    Federal Register →
  • Nov 17, 1998

    Airworthiness Directives; Parker Hannifan Airborne Dry Air Pumps, Conversion Kits, and Coupling Kits

    This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) 98-23-01, which was sent previously to all known U.S. owners and operators of aircraft and engines equipped with certain Parker Hannifin Airborne dry air pumps, conversion kits, and coupling kits, utilizing part number (P/N) B1-19-1 flexible coupling that has…

    Federal Register →
  • Oct 22, 1998

    Airworthiness Directives; The New Piper Aircraft, Inc.; Models PA-23-235, PA-23-250, and PA-E23-250 Airplanes

    This amendment clarifies information contained in Airworthiness Directive (AD) 83-22-01, which currently requires inserting certain zero fuel weight limitations into the Limitations Section of the airplane flight manual (AFM) on certain The New Piper Aircraft, Inc. (Piper) Models PA-23-235, PA-23-250, and PA-E23-250 airplanes. The FAA has received reports t…

    Federal Register →
  • Oct 15, 1998

    Airworthiness Directives; Bob Fields Aerocessories Inflatable Door Seals

    This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) 98-21-21, which was sent previously to all known U.S. owners and operators of aircraft equipped with Bob Fields Aerocessories inflatable door seals installed in accordance with the applicable supplemental type certificate (STC). These inflatable door seals cou…

    Federal Register →
  • Oct 9, 1998

    Airworthiness Directives; Twin Commander Aircraft Corporation Model 680FL Airplanes

    This document proposes to adopt a new airworthiness directive (AD) that would apply to Twin Commander Aircraft Corporation (Twin Commander) Model 680FL airplanes. The proposed AD would require revising the FAA-approved Airplane Flight Manual (AFM) to specify procedures that would prohibit flight in severe icing conditions (as determined by certain visual cu…

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  • Sep 28, 1998

    Airworthiness Directives; Twin Commander Aircraft Corporation Models 500, 500-A, 500-B, 500-S, 500-U, 520, 560, 560-A, 560-E, 560-F, 680, 680-E, 680FL(P), 680T, 680V, 680W, 681, 685, 690, 690A, 690B, 690C, 690D, 695, 695A, 695B, and 720 Airplanes

    This amendment adopts a new airworthiness directive (AD) that applies to Twin Commander Aircraft Corporation Models 500, 500-A, 500- B, 500-S, 500-U, 520, 560, 560-A, 560-E, 560-F, 680, 680-E, 680FL(P), 680T, 680V, 680W, 681, 685, 690, 690A, 690B, 690C, 690D, 695, 695A, 695B, and 720 airplanes. This action requires revising the FAA-approved Airplane Flight…

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  • Sep 24, 1998

    Airworthiness Directives; The New Piper Aircraft, Inc. PA-23, PA- 30, PA-31, PA-34, PA-39, PA-40, and PA-42 Series Airplanes

    This document proposes to supersede Airworthiness Directive (AD) 98-04-27, which currently requires incorporating certain icing information into the FAA-approved airplane flight manual (AFM) of The New Piper Aircraft, Inc. (Piper) PA-23, PA-30, PA-31, PA-34, PA-39, PA- 40, and PA-42 series airplanes. The Federal Aviation Administration (FAA) inadvertently o…

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  • Sep 24, 1998

    Airworthiness Directives; Pilatus Aircraft Ltd. Models PC-12 and PC-12/45 Airplanes

    This amendment adopts a new airworthiness directive (AD) that applies to Pilatus Aircraft Ltd. Models PC-12 and PC-12/45 airplanes. This AD requires revising the FAA-approved Airplane Flight Manual (AFM) to specify procedures that would prohibit flight in severe icing conditions (as determined by certain visual cues), limit or prohibit the use of various fl…

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  • Jun 8, 1998

    Airworthiness Directives; Raytheon Aircraft Company 200 Series Airplanes

    This document proposes to adopt a new airworthiness directive (AD) that would apply to Raytheon Aircraft Company (Raytheon) 200 series airplanes. The proposed AD would require revising the FAA- approved Airplane Flight Manual (AFM) to specify procedures that would prohibit flight in severe icing conditions (as determined by certain visual cues), limit or pr…

    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

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