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Public Record · As of May 5, 2026

N331CK

Boeing 737-300 · 1986 View Type →

Status

Registration Valid

Type

Fixed Wing Multi Engine

Engine

CFM INTL CFM56-3B-1

Last Cert Issue

02 /  NTSB Records

Events on file with the National Transportation Safety Board

03 /  Airworthiness Directives

Applicable to BOEING 737-300

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

  • Feb 10, 2025

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 737-100, -200, -200C, -300, -400, and -500 series airplanes. This AD was prompted by a report indicating cracks in the frame inner chord and web at station (STA) 727. This AD requires an inspection for any repair installed, repetitive inspections of the frame inner chord…

    Federal Register →
  • Dec 2, 2024

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 737-300 and -400 series airplanes. This AD was prompted by a report that flight control rigging tolerances could result in spoiler deflection not reaching the minimal level required to engage the cruise thrust split monitor (MONFD) used by the autothrottle (A/T) syst…

    Federal Register →
  • Oct 11, 2024

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 737-300, -400, and -800 series airplanes. This AD was prompted by a report that the protective spiral wrap used on certain galley wire bundles does not have the correct flammability properties. This AD requires inspecting certain galleys to determine part numbers, in…

    Federal Register →
  • Jul 29, 2024

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA proposes to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737-300 and -400 series airplanes. This proposed AD was prompted by a report that flight control rigging tolerances could result in spoiler deflection not reaching the minimal level required to engage the cruise thrust split monitor (MONFD) used by the autothro…

    Federal Register →
  • Jun 24, 2024

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA proposes to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737-300, -400, and -800 series airplanes. This proposed AD was prompted by a report that the protective spiral wrap used on certain galley wire bundles does not have the correct flammability properties. This proposed AD would require inspecting certain galleys…

    Federal Register →
  • Jul 31, 2023

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 737-100, 737-200, 737-200C, 737-300, 737-400, 737-500, 737-600, 737-700, 737-700C, 737-800, 737-900, 737-900ER, 757- 200, 757-200PF, 757-200CB, 757-300, 767-200, 767-300, 767-300F, and 767-400ER series airplanes. This AD was prompted by reports indicating premature aging…

    Federal Register →
  • Jul 24, 2023

    Airworthiness Directives; The Boeing Company Model Airplanes

    The FAA proposes to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 757-200, -200CB, and -200PF series airplanes. This proposed AD was prompted by a crack growth analysis, which indicated that current inspections are not adequate to detect cracks in certain sections of the upper frame at the frame splice between certain stringe…

    Federal Register →
  • Jan 12, 2023

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 707 and Model 727 airplanes. This AD was prompted by a report indicating cracking in fastener holes at the center wing box and at certain positions of the rear spar and lower skin on a Model 737-300 airplane. A cross model review determined that similar cracking of the f…

    Federal Register →
  • Dec 22, 2022

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA is superseding Airworthiness Directive (AD) 2021-14- 20, which applied to all The Boeing Company Model 737 airplanes. AD 2021-14-20 required repetitive functional tests of the cabin altitude pressure switches, and on-condition actions, including replacement, if necessary. AD 2021-14-20 also required reporting test results. This AD was prompted by da…

    Federal Register →
  • Dec 9, 2022

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA proposes to adopt a new airworthiness directive (AD) for all The Boeing Company Model 737-100, 737-200, 737-200C, 737-300, 737-400, 737-500, 737-600, 737-700, 737-700C, 737-800, 737-900, 737- 900ER, 757-200, 757-200PF, 757-200CB, 757-300, 767-200, 767-300, 767- 300F, and 767-400ER series airplanes. This proposed AD was prompted by reports indicating…

    Federal Register →
  • Nov 2, 2022

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 757 airplanes. This AD was prompted by a report of cracks found in the fastener holes at a certain location in the center wing box rear spar, lower skin. This AD requires repetitive inspections for cracking of certain areas of the center wing box rear spar, lower skin an…

    Federal Register →
  • Oct 26, 2022

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 737-300, -400, and -500 series airplanes. This AD was prompted by a report that a spoiler sensor failure may go undetected by the autothrottle (A/T) computer. This AD requires repetitive built-in test equipment (BITE) tests of the A/T computer to detect a spoiler sen…

    Federal Register →
  • Sep 15, 2022

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA proposes to adopt a new airworthiness directive (AD) for all The Boeing Company Model 707 and Model 727 airplanes. This proposed AD was prompted by a report indicating cracking in fastener holes at the center wing box and at certain positions of the rear spar and lower skin on a Model 737-300 airplane. A cross model review determined that similar cr…

    Federal Register →
  • Apr 11, 2022

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA proposes to adopt a new airworthiness directive (AD) for all The Boeing Company Model 757 airplanes. This proposed AD was prompted by a report of cracks found in the fastener holes at a certain location on the center wing box rear spar, lower skin. This proposed AD would require repetitive inspections for cracking of certain areas of the center wing…

    Federal Register →
  • Jan 18, 2022

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 737-300, -400, and -500 series airplanes. This AD was prompted by an evaluation by the design approval holder (DAH) indicating that the frame splice between certain stringers is subject to widespread fatigue damage (WFD). This AD requires an inspection of certain fus…

    Federal Register →
  • Nov 24, 2021

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 757-200, -200PF, -200CB, and -300 series airplanes. This AD was prompted by crack indications found in the lower aft wing skin bolt holes where the flap tracks attach to the track support fitting; this finding was on a Model 737-300 series airplane, which has a design si…

    Federal Register →
  • Aug 24, 2021

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA proposes to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737-300, -400, and -500 series airplanes. This proposed AD was prompted by an evaluation by the design approval holder (DAH) indicating that the frame splice between certain stringers is subject to widespread fatigue damage (WFD). This proposed AD would require…

    Federal Register →
  • May 18, 2021

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 737-300, -400, and -500 series airplanes. This AD was prompted by a flap synchro wire failure that may go undetected by the autothrottle (A/T) computer. This AD requires repetitive BITE (built-in test equipment) tests of the A/T computer to detect a flap synchro wire fai…

    Federal Register →
  • Apr 9, 2021

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA proposes to adopt a new airworthiness directive (AD) for all The Boeing Company Model 757-200, -200PF, -200CB, and -300 series airplanes. This proposed AD was prompted by crack indications found in the lower aft wing skin bolt holes where the flap tracks attach to the track support fitting. This proposed AD would require repetitive high frequency ed…

    Federal Register →
  • Feb 24, 2021

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA proposes to adopt a new airworthiness directive (AD) for all The Boeing Company Model 737-100, -200, -200C, -300, -400, and -500 series airplanes. This proposed AD was prompted by a report indicating that a crack was found on the splice angle flange that is attached to the station (STA) 540 bulkhead in the area between certain stringers. This propos…

    Federal Register →
  • Nov 20, 2020

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA is superseding Airworthiness Directive (AD) 2018-23- 51, which applied to all The Boeing Company Model 737-8 and 737-9 (737 MAX) airplanes. AD 2018-23-51 required revising certificate limitations and operating procedures of the Airplane Flight Manual (AFM) to provide the flightcrew with runaway horizontal stabilizer trim procedures to follow under c…

    Federal Register →
  • Aug 25, 2020

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA is superseding Airworthiness Directive (AD) 2019-03- 06, which applied to certain The Boeing Company Model 737-300, -400, and -500 series airplanes. AD 2019-03-06 required installing lanyard assemblies on the passenger service units (PSUs) and, for certain airplanes, on the life vest panels. This AD was prompted by a report indicating that the PSUs…

    Federal Register →
  • Aug 11, 2020

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 737-300, -400, -500, -600, -700, -700C, -800, -900, and -900ER series airplanes. An emergency AD was sent to all known U.S. owners and operators of these airplanes. This AD requires inspections of the engine bleed air 5th stage check valve on each engine, and replacement…

    Federal Register →
  • Jul 28, 2020

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA proposes to adopt a new airworthiness directive (AD) for all The Boeing Company Model 737-100, -200, -200C, -300, -400, and -500 series airplanes. This proposed AD was prompted by crack indications found in the lower aft wing skin bolt holes where the flap tracks attach to the track support fitting. This proposed AD would require repetitive inspecti…

    Federal Register →
  • Jul 23, 2020

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 737-300, -400, and -500 series airplanes. This AD was prompted by a report that a crack indication consistent with fatigue cracking was found on the left nacelle support overwing fitting flange fastener hole during teardown of a Model 737-300 series airplane. This AD req…

    Federal Register →
  • Mar 9, 2020

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA proposes to supersede Airworthiness Directive (AD) 2019-03-06, which applies to certain The Boeing Company Model 737-300, -400, and -500 series airplanes. AD 2019-03-06 requires installing lanyard assemblies to the passenger service units (PSUs) and, for certain airplanes, on the life vest panels. Since AD 2019-03-06 was issued, the FAA has determin…

    Federal Register →
  • Feb 18, 2020

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA proposes to adopt a new airworthiness directive (AD) for all The Boeing Company Model 737-300, -400, and -500 series airplanes. This proposed AD was prompted by a report that a crack indication consistent with fatigue cracking was found on the left nacelle support overwing fitting flange fastener hole during teardown of a Model 737-300 series airpla…

    Federal Register →
  • Feb 12, 2020

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 737-200, -200C, -300, -400, and -500 series airplanes. This AD was prompted by an evaluation by the design approval holder (DAH) indicating that the lower skin of the fuselage skin lap splices along the lower fastener row of a certain stringer lap splice on certain b…

    Federal Register →
  • Jan 21, 2020

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA is adopting a new airworthiness directive (AD) for The Boeing Company Model 737-300, -400, and -700 series airplanes, modified to a Bedek Division Special Freighter (BDSF) by Supplemental Type Certificate (STC) ST01566LA, ST01961SE, or ST02556SE, with a 9G rigid barrier. An emergency AD was sent to all known U.S. owners and operators of these airpla…

    Federal Register →
  • Jan 16, 2020

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA is correcting an airworthiness directive (AD) that published in the Federal Register. That AD applies to all The Boeing Company Model 737-100, -200, -200C, -300, -400, and -500 series airplanes. As published, the service information reference specified in a certain paragraph of the regulatory text is incorrect. This document corrects that error. In…

    Federal Register →
  • Dec 16, 2019

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 737-100, -200, -200C, -300, -400, and -500 series airplanes. This AD was prompted by significant changes made to the airworthiness limitations (AWLs) related to fuel tank ignition prevention and the nitrogen generation system. This AD requires revising the existing maint…

    Federal Register →
  • Dec 12, 2019

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 737-300, -400, -500, -600, -700, -700C, -800, -900, and -900ER series airplanes; Model 757 series airplanes; Model 767 series airplanes; Model 777 series airplanes; and Model 787-8 and 787-9 airplanes. This AD was prompted by reports of fuel crossfeed valves failing to o…

    Federal Register →
  • Dec 9, 2019

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 737-300, -400, and -500 series airplanes. This AD was prompted by fuel system reviews conducted by the manufacturer. This AD requires applying sealant to the fasteners in the fuel tanks, replacing wire bundle clamps external to the fuel tanks, and installing Teflon sleev…

    Federal Register →
  • Oct 15, 2019

    Airworthiness Directives; Various Transport Airplanes

    The FAA is adopting a new airworthiness directive (AD) for various transport airplanes. This AD was prompted by reports of smoke and fumes in the flight deck. This AD requires modification of certain universal serial bus (USB) receptacles located in the flight deck. The FAA is issuing this AD to address the unsafe condition on these products.

    Federal Register →
  • Sep 12, 2019

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA is correcting an airworthiness directive (AD) that published in the Federal Register. That AD applies to certain The Boeing Company Model 737-100, 737-200, 737-200C, 737-300, 737-400, and 737-500 series airplanes. As published, a paragraph reference specified in the regulatory text is incorrect. This document corrects that error. In all other respec…

    Federal Register →
  • Sep 4, 2019

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA proposes to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737-200, -200C, -300, -400, and - 500 series airplanes. This proposed AD was prompted by an evaluation by the design approval holder (DAH) indicating that the lower skin of the fuselage skin lap splices along the lower fastener row of a certain stringer lap spl…

    Federal Register →
  • Aug 15, 2019

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 737-100, 737-200, 737-200C, 737-300, 737-400, and 737-500 series airplanes. This AD was prompted by reports of cracks in the frames below the passenger floor. This AD requires repetitive inspections for cracking of the fuselage lower lobe frames, and applicable on-co…

    Federal Register →
  • Jun 25, 2019

    Airworthiness Directives; The Boeing Company Airplanes

    The FAA proposes to adopt a new airworthiness directive (AD) for all The Boeing Company Model 737-300, -400, and -500 series airplanes. This proposed AD was prompted by fuel system reviews conducted by the manufacturer. This proposed AD would require applying sealant to the fasteners in the fuel tanks, replacing wire bundle clamps external to the fuel tanks…

    Federal Register →
  • Jun 24, 2019

    Airworthiness Directives; Various Transport Airplanes

    The FAA proposes to adopt a new airworthiness directive (AD) for various transport airplanes. This proposed AD was prompted by reports of smoke and fumes in the flight deck. This proposed AD would require modification of certain universal serial bus (USB) receptacles located in the flight deck. The FAA is proposing this AD to address the unsafe condition on…

    Federal Register →
  • Jun 10, 2019

    Airworthiness Directives; The Boeing Company Airplanes

    We propose to adopt a new airworthiness directive (AD) for all The Boeing Company Model 737-100, -200, -200C, -300, -400, and -500 series airplanes. This AD was prompted by significant changes made to the airworthiness limitations (AWLs) related to fuel tank ignition prevention and the nitrogen generation system. This AD would require revising the existing…

    Federal Register →
  • Mar 1, 2019

    Airworthiness Directives; The Boeing Company Airplanes

    We propose to adopt a new airworthiness directive (AD) for all The Boeing Company Model 737-100, 737-200, 737-200C, 737-300, 737-400, and 737-500 series airplanes. This proposed AD was prompted by reports of cracks in the frame webs below the passenger floor. This proposed AD would require repetitive inspections for cracking of the fuselage lower lobe frame…

    Federal Register →
  • Feb 22, 2019

    Airworthiness Directives; The Boeing Company Airplanes

    We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 737-300, -400, and -500 series airplanes. This AD was prompted by a report indicating the passenger service units (PSUs) became separated from their attachments during several survivable accident sequences. This AD requires installing lanyard assemblies on the PSU and, f…

    Federal Register →
  • Feb 22, 2019

    Airworthiness Directives; The Boeing Company Airplanes

    We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737-200, -200C, -300, -400, and -500 airplanes. This proposed AD was prompted by reports of cracking in the lower lobe skin panel assemblies of the fuselage. This proposed AD would require replacement of lower lobe skin panel assemblies, and detailed inspections for…

    Federal Register →
  • Dec 17, 2018

    Airworthiness Directives; The Boeing Company Airplanes

    We are adopting a new airworthiness directive (AD) for all The Boeing Company Model 727 airplanes. This AD was prompted by a report of cracking in the inboard lower flange and adjacent web near the forward attachment of the outboard flap track at a certain position on a Model 737-300 airplane. The flap tracks of Model 737-300 airplanes are similar to the fl…

    Federal Register →
  • Sep 28, 2018

    Airworthiness Directives; The Boeing Company Airplanes

    We propose to adopt a new airworthiness directive (AD) for all The Boeing Company Model 727 airplanes. This proposed AD was prompted by a report of cracking in the inboard lower flange and adjacent web near the forward attachment of the outboard flap track at a certain position on a Model 737-300 airplane. The flap tracks of Model 737-300 airplanes are simi…

    Federal Register →
  • Jul 6, 2018

    Airworthiness Directives; The Boeing Company Airplanes

    We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737-300, -400, and -500 series airplanes. This proposed AD was prompted by a report indicating that the primary latch securing the passenger service unit (PSU) to the airplane structure is not adequate for the higher loads experienced during survivable accidents. Thi…

    Federal Register →
  • May 25, 2018

    Airworthiness Directives; The Boeing Company Airplanes

    We propose to adopt a new airworthiness directive (AD) for all The Boeing Company Model 737-100, -200, -200C, -300, -400, -500 series airplanes. This proposed AD was prompted by the results of a fleet survey that revealed cracking in the bulkhead frame web at a certain body station. This proposed AD would require repetitive inspections of the bulkhead frame…

    Federal Register →
  • Mar 19, 2018

    Airworthiness Directives; The Boeing Company Airplanes

    We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 737-300 and -500 series airplanes. This AD was prompted by a report indicating that fatigue cracks were found in the lower wing skin of an airplane with winglets installed. This AD requires repetitive inspections for cracking of the lower wing skin, and repair if necessa…

    Federal Register →
  • Mar 5, 2018

    Airworthiness Directives; The Boeing Company Airplanes

    We are adopting a new airworthiness directive (AD) for all The Boeing Company Model 737-100, -200, -200C, -300, -400, -500 series airplanes. This AD was prompted by a report of wire damage on a fuel boost pump power cable, and a separate report of a fuel tank explosion on a similarly equipped airplane. This AD requires the installation of new shielded wire…

    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.