Type Record · As of May 3, 2026
DOUGLAS DC-9-21
Fixed Wing Multi Engine · P & W JT8D SERIES
Registered
1
NTSB Events
0
Airworthiness Directives
50
01 / Distribution
Where the fleet lives and was built
Counts of currently-registered DOUGLAS DC-9-21 aircraft by US state and decade of manufacture, sourced from the FAA Aircraft Registry.
By State (top 10)
- CA 100.0% 1
By Decade of Manufacture
- Unknown 100.0% 1
02 / NTSB Records
Events involving DOUGLAS DC-9-21 aircraft
No NTSB-recorded events match DOUGLAS DC-9-21 in the indexed corpus.
03 / Airworthiness Directives
FAA directives applicable to DOUGLAS DC-9-21
50 directive(s) on file. Showing the most recent 25 · 25 more in the Federal Register.
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Feb 17, 2016
Airworthiness Directives; The Boeing Company Airplanes
We are superseding Airworthiness Directive (AD) 2012-18-05 for The Boeing Company Model DC-9-10, DC-9-20, DC-9-30, DC-9-40, and DC-9- 50 series airplanes; and Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9- 83 (MD-83), DC-9-87 (MD-87), MD-88, and MD-90-30 airplanes; equipped with a center wing fuel tank and Boeing origi…
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Nov 6, 2014
Airworthiness Directives; The Boeing Company Airplanes
We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model DC-9-10, DC-9-20, DC-9-30, DC-9-40, and DC-9- 50 series airplanes. This AD was prompted by an evaluation by the design approval holder (DAH) indicating that the bulkhead dome tees, which connect the bulkhead web to the fuselage, ar…
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Nov 6, 2014
Airworthiness Directives; The Boeing Company Airplanes
We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model DC-9-10, DC-9-20, and DC-9-30 series airplanes. This AD was prompted by an evaluation by the design approval holder (DAH) indicating that the improved (shot-peened) aft fuselage non-ventral pressure bulkhead tee is subject to wides…
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May 29, 2014
Airworthiness Directives; The Boeing Company Airplanes
We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model DC-9-10, DC-9-20, and DC-9-30 series airplanes. This proposed AD was prompted by an evaluation by the design approval holder (DAH) indicating that the improved (shot-peened) aft fuselage non-ventral pressure bulkhead tee is sub…
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Apr 17, 2014
Airworthiness Directives; the Boeing Company Airplanes
We propose to adopt a new airworthiness directive (AD) for certain the Boeing Company Model DC-9-10, DC-9-20, DC-9-30, DC-9-40, and DC-9-50 series airplanes. This proposed AD was prompted by an evaluation by the design approval holder (DAH) indicating that the bulkhead dome tees, which connect the bulkhead web to the…
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Nov 9, 2010
Airworthiness Directives; McDonnell Douglas Corporation Model DC-9-14, DC-9-15, and DC-9-15F Airplanes; and Model DC-9-20, DC-9-30, DC-9-40, and DC-9-50 Series Airplanes
We are superseding an existing airworthiness directive (AD) for the products listed above. That AD currently requires repetitive high frequency eddy current inspections to detect cracking in the vertical radius (also known as the "vertical leg") of the upper cap of the center wing rear spar, and repair if necessary. T…
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Oct 8, 2010
Airworthiness Directives; McDonnell Douglas Corporation Model DC-9-14, DC-9-15, and DC-9-15F Airplanes; and DC-9-20, DC-9-30, DC-9-40, and DC-9-50 Series Airplanes
We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD would require installing new in-line fuses for the fuel level float switch and new in-line fuses for the pressure switch, as applicable, and changing the wiring. The proposed actions would affect the left and right w…
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Aug 5, 2010
Airworthiness Directives; McDonnell Douglas Corporation Model DC-9-14, DC-9-15, and DC-9-15F Airplanes; and Model DC-9-20, DC-9-30, DC-9-40, and DC-9-50 Series Airplanes
The FAA proposes to supersede an existing airworthiness directive (AD) that applies to certain Model DC-9-14 and DC-9-15 airplanes; and Model DC-9-20, DC-9-30, DC-9-40, and DC-9-50 series airplanes. The existing AD currently requires repetitive high frequency eddy current inspections to detect cracking in the vertical…
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Jan 20, 2010
Airworthiness Directives; AVOX Systems and B/E Aerospace Oxygen Cylinder Assemblies, as Installed on Various Transport Airplanes
The FAA is revising an existing airworthiness directive (AD), which applies to certain AVOX Systems and B/E Aerospace oxygen cylinder assemblies, as installed on various transport airplanes. That AD currently requires removing certain oxygen cylinder assemblies from the airplane. This AD removes certain oxygen cylinde…
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Jan 19, 2010
Airworthiness Directives; Sicma Aero Seat 88xx, 89xx, 90xx, 91xx, 92xx, 93xx, 95xx, and 96xx Series Passenger Seat Assemblies, Installed on Various Transport Category Airplanes
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 uns…
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Dec 4, 2009
Airworthiness Directives; McDonnell Douglas Model DC-9-14, DC-9-15, and DC-9-15F Airplanes; and McDonnell Douglas Model DC-9-20, DC-9-30, DC-9-40, and DC-9-50 Series Airplanes
The FAA is superseding an existing airworthiness directive (AD) that applies to all McDonnell Douglas Model DC-9-14, DC-9-15, and DC-9-15F airplanes; and McDonnell Douglas Model DC-9-20, DC-9-30, DC-9- 40, and DC-9-50 series airplanes. That AD currently requires repetitive inspections for cracks of the main landing ge…
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Dec 2, 2009
Airworthiness Directives; AVOX Systems and B/E Aerospace Oxygen Cylinder Assemblies, as Installed on Various Transport Airplanes
We are adopting a new airworthiness directive (AD) for certain AVOX Systems and B/E Aerospace oxygen cylinder assemblies, as installed on various transport airplanes. This AD requires removing certain oxygen cylinder assemblies from the airplane. This AD was prompted by the reported rupture of a high-pressure gaseous…
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Jul 30, 2009
Airworthiness Directives; McDonnell Douglas Model DC-9-14, DC-9-15, and DC-9-15F Airplanes; and McDonnell Douglas Model DC-9-20, DC-9-30, DC-9-40, and DC-9-50 Series Airplanes
The FAA proposes to supersede an existing airworthiness directive (AD) that applies to all McDonnell Douglas Model DC-9-14, DC- 9-15, and DC-9-15F airplanes; and McDonnell Douglas Model DC-9-20, DC- 9-30, DC-9-40, and DC-9-50 series airplanes. The existing AD currently requires repetitive inspections for cracks of the…
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Feb 24, 2009
Airworthiness Directives; McDonnell Douglas Model DC-9-14, DC-9-15, and DC-9-15F Airplanes; and Model DC-9-20, DC-9-30, DC-9-40, and DC-9-50 Series Airplanes
We are adopting a new airworthiness directive (AD) for certain McDonnell Douglas airplanes listed above. This AD requires installing a dam assembly for the container of the fuel boost pump of the center tank located in the right main tank, and doing the related investigative actions, and corrective actions if necessar…
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Dec 3, 2008
Airworthiness Directives; McDonnell Douglas Model DC-9-10, DC-9-20, DC-9-30, DC-9-40, and DC-9-50 Series Airplanes, Equipped With a Tail Cone Evacuation Slide Container Installed in Accordance With Supplemental Type Certificate (STC) ST735SO
We are adopting a new airworthiness directive (AD) for McDonnell Douglas Model DC-9-10, DC-9-20, DC-9-30, DC-9-40, and DC-9-50 series airplanes, equipped with tail cone evacuation slide containers as specified above. This AD requires modifying the tail cone slide. This AD also requires additional tail cone drops and s…
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Aug 1, 2008
Airworthiness Directives; McDonnell Douglas Model DC-9-14, DC-9-15, and DC-9-15F Airplanes, and DC-9-20, DC-9-30, DC-9-40, and DC-9-50 Series Airplanes
We propose to adopt a new airworthiness directive (AD) for certain McDonnell Douglas airplanes listed above. This proposed AD would require installing a dam assembly for the container of the fuel boost pump of the center tank located in the right main tank, and doing the related investigative actions, and corrective a…
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May 29, 2008
Airworthiness Directives; McDonnell Douglas Model 717-200 Airplanes; Model DC-9-10 Series Airplanes; Model DC-9-20 Series Airplanes; Model DC-9-30 Series Airplanes; Model DC-9-40 Series Airplanes; Model DC-9-50 Series Airplanes; Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) Airplanes; Model MD-88 Airplanes; and Model MD-90-30 Airplanes
We are adopting a new airworthiness directive (AD) for all McDonnell Douglas airplanes identified above. This AD requires revising the FAA-approved maintenance program, or the Airworthiness Limitations (AWLs) section of the Instructions for Continued Airworthiness, as applicable, to incorporate new AWLs for fuel tank…
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Mar 24, 2008
Airworthiness Directives; Goodrich Evacuation Systems Approved Under Technical Standard Orders (TSOs) TSO-C69, TSO-C69a, TSO-C69b, and TSO-C69c, Installed on Various Boeing, McDonnell Douglas, and Airbus Transport Category Airplanes
We are adopting a new airworthiness directive (AD) for certain Goodrich evacuation systems approved under Technical Standard Orders (TSOs) TSO-C69, TSO-C69a, TSO-C69b, and TSO-C69c, installed on certain Boeing, McDonnell Douglas, and Airbus transport category airplanes. For certain systems, this AD requires replacing…
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Feb 5, 2008
Airworthiness Directives; McDonnell Douglas Model DC-8-11, DC-8-12, DC-8-21, DC-8-31, DC-8-32, DC-8-33, DC-8-41, DC-8-42, and DC-8-43 Airplanes; Model DC-8F-54 and DC-8F-55 Airplanes; Model DC-8-50, -60, -60F, -70, and -70F Series Airplanes; Model DC-9-10, -20, -30, -40, and -50 Series Airplanes; Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) Airplanes; and Model MD-88 Airplanes
The FAA is superseding an existing airworthiness directive (AD), which applies to certain McDonnell Douglas airplanes. The existing AD currently requires an initial general visual or dye penetrant inspection, repetitive dye penetrant inspections, and replacement, as necessary, of the rudder pedal bracket. The existing…
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Jan 18, 2008
Airworthiness Directives; McDonnell Douglas Model 717-200 Airplanes; Model DC-9-10 Series Airplanes; Model DC-9-20 Series Airplanes; Model DC-9-30 Series Airplanes; Model DC-9-40 Series Airplanes; Model DC-9-50 Series Airplanes; Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) Airplanes; Model MD-88 Airplanes; and Model MD-90-30 Airplanes
We propose to adopt a new airworthiness directive (AD) for all McDonnell Douglas airplanes identified above. This proposed AD would require revising the FAA-approved maintenance program, or the Airworthiness Limitations (AWLs) section of the Instructions for Continued Airworthiness, as applicable, to incorporate new A…
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Aug 31, 2007
Airworthiness Directives; McDonnell Douglas Model DC-8-11, DC-8-12, DC-8-21, DC-8-31, DC-8-32, DC-8-33, DC-8-41, DC-8-42, and DC-8-43 Airplanes; Model DC-8F-54 and DC-8F-55 Airplanes; Model DC-8-50, -60, -60F, -70, and -70F Series Airplanes; Model DC-9-10, -20, -30, -40, and -50 Series Airplanes; Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) Airplanes; and Model MD-88 Airplanes
The FAA proposes to supersede an existing airworthiness directive (AD) that applies to certain McDonnell Douglas airplanes. The existing AD currently requires an initial general visual or dye penetrant inspection, repetitive dye penetrant inspections, and replacement, as necessary, of the rudder pedal bracket. The exi…
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Aug 28, 2007
Airworthiness Directives; McDonnell Douglas Model DC-9-10, -20, -30, -40, and -50 Series Airplanes; Model DC-9-81 (MD-81), -82 (MD-82), -83 (MD-83), and -87 (MD-87) Airplanes; and Model MD-88 Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain McDonnell Douglas Model DC-9-10, -20, -30, -40, and -50 series airplanes; Model DC-9-81 (MD-81), -82 (MD-82), -83 (MD- 83), and -87 (MD-87) airplanes; and Model MD-88 airplanes; that requires repetitive inspections and functional tests of…
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Aug 6, 2007
Airworthiness Directives; McDonnell Douglas Model DC-9-10, DC-9-20, DC-9-30, DC-9-40, and DC-9-50 Series Airplanes, Equipped with a Tail Cone Evacuation Slide Container Installed in Accordance With Supplemental Type Certificate (STC) ST735SO
The FAA proposes to adopt a new airworthiness directive (AD) for McDonnell Douglas Model DC-9-10, DC-9-20, DC-9-30, DC-9-40, and DC- 9-50 series airplanes, equipped with tail cone evacuation slide containers as specified above. This proposed AD would require modifying the tail cone slide. This proposed AD also would r…
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Jun 8, 2007
Airworthiness Directives; Goodrich Evacuation Systems Approved Under Technical Standard Order (TSO), TSO-C69, TSO-C69a, TSO-C69b, and TSO-69c, Installed on Various Boeing, McDonnell Douglas, and Airbus Transport Category Airplanes
The FAA proposes to adopt a new airworthiness directive (AD) for certain Goodrich evacuation systems approved under TSO-C69, TSO- C69a, TSO-C69b, and TSO-69c, installed on certain Boeing, McDonnell Douglas, and Airbus transport category airplanes. For certain systems, this proposed AD would require replacing the evacu…
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Oct 25, 2006
Airworthiness Directives; McDonnell Douglas Model DC-9-10 Series Airplanes; DC-9-20 Series Airplanes; DC-9-30 Series Airplanes; DC-9-40 Series Airplanes; and DC-9-50 Series Airplanes
The FAA is superseding an existing airworthiness directive (AD), which applies to certain McDonnell Douglas transport category airplanes. That AD currently requires, among other things, revision of an existing program of structural inspections. This new AD requires implementation of a program of structural inspections…
07 / PMA replacement parts
FAA-approved replacement parts for DOUGLAS DC-9-21
60+ parts on file from the FAA Parts Manufacturer Approval database. Each is a non-OEM part the FAA has authorized for use as a replacement on this aircraft type.
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P-1013#https://drs.faa.gov/browse/excelExternalWindow/2179D15187CE02D486257B4000546D0C.0001##
Element Assembly
Western Filter A Division of Donalson Company Inc replaces 663180-2
PMA holder → -
P-1013#https://drs.faa.gov/browse/excelExternalWindow/D84557611E1232D6862570AD0064B374.0001##
Element Assembly
Western Filter A Division of Donalson Company Inc replaces 663180-2
PMA holder → -
P-1013#https://drs.faa.gov/browse/excelExternalWindow/13E47B8073AF3FA386257348005BF856.0001##
Element Assembly
Western Filter A Division of Donalson Company Inc replaces 663180-2
PMA holder → -
B101001-503#https://drs.faa.gov/browse/excelExternalWindow/9BDA695C023E28D9862584B7007279BF.0001##
Coffee Maker
Safran Cabin Inc. replaces B/E Aerospace, 50405-200
PMA holder → -
B101001-501#https://drs.faa.gov/browse/excelExternalWindow/388A1AF7446475438625849E005B85E1.0001##
Coffee Maker
Safran Cabin Inc. replaces B/E Aerospace, 50405-200
PMA holder → -
B101001-503#https://drs.faa.gov/browse/excelExternalWindow/B7AB13C96469262986257B6D00647A15.0001##
Coffee Maker
Safran Cabin Inc. replaces B/E Aerospace, 50405-200
PMA holder → -
KW 205S#https://drs.faa.gov/browse/excelExternalWindow/DB48D57F7AADA42F862584B70072702B.0001##
Incandescent Displays
WAMCO INC replaces KW 205S
PMA holder → -
KW 105S#https://drs.faa.gov/browse/excelExternalWindow/369DAC4F0D656F1E862584B700727035.0001##
Incandescent Displays
WAMCO INC replaces KW 105S
PMA holder → -
KW 105S-TB#https://drs.faa.gov/browse/excelExternalWindow/0D1D9E86B1069901862584B70072701A.0001##
Incandescent Displays
WAMCO INC replaces KW 105S-TB
PMA holder → -
KW 205S-DP-TB#https://drs.faa.gov/browse/excelExternalWindow/7582C2A54C29E7B7862584B70072703D.0001##
Incandescent Displays
WAMCO INC replaces KW 205S-DP-TB
PMA holder → -
KW 205AL#https://drs.faa.gov/browse/excelExternalWindow/33E510295A199E2D862584B700726FCB.0001##
Incandescent Displays
WAMCO INC replaces KW 205AL
PMA holder → -
KW 205S-PM-TB#https://drs.faa.gov/browse/excelExternalWindow/DA49F17E2B91F5AB862584B700726FF8.0001##
Incandescent Displays
WAMCO INC replaces KW 205S-PM-TB
PMA holder → -
KW 205S-TB#https://drs.faa.gov/browse/excelExternalWindow/9B34D796E2D29FBD862584B700727009.0001##
Incandescent Displays
WAMCO INC replaces KW 205S-TB
PMA holder → -
KW 105S-TB#https://drs.faa.gov/browse/excelExternalWindow/74BA7DF180F04D0086257F38006591EA.0001##
Incandescent Displays
WAMCO INC replaces KW 105S-TB
PMA holder → -
KW 205S-DP-TB#https://drs.faa.gov/browse/excelExternalWindow/1A80B8927180021A86257F3800659241.0001##
Incandescent Displays
WAMCO INC replaces KW 205S-DP-TB
PMA holder → -
KW 105S#https://drs.faa.gov/browse/excelExternalWindow/F0919890DA82761386257F3800659225.0001##
Incandescent Displays
WAMCO INC replaces KW 105S
PMA holder → -
KW 205S#https://drs.faa.gov/browse/excelExternalWindow/02A8F1230DED5C3686257F3800659208.0001##
Incandescent Displays
WAMCO INC replaces KW 205S
PMA holder → -
KW 205S-PM-TB#https://drs.faa.gov/browse/excelExternalWindow/EC2E81DBA502FE5A86257F38006591A4.0001##
Incandescent Displays
WAMCO INC replaces KW 205S-PM-TB
PMA holder → -
KW 205S-TB#https://drs.faa.gov/browse/excelExternalWindow/08A3F6060416BDEF86257F38006591CE.0001##
Incandescent Displays
WAMCO INC replaces KW 205S-TB
PMA holder → -
KW 205AL#https://drs.faa.gov/browse/excelExternalWindow/3BDC0A3F2B6DC45E86257F380065917B.0001##
Incandescent Displays
WAMCO INC replaces KW 205AL
PMA holder → -
KW 205S-DP-TB#https://drs.faa.gov/browse/excelExternalWindow/CEFDB36D63C1BEFF86257E46005FAECA.0001##
Incandescent Displays
WAMCO INC replaces KW 205S-DP-TB
PMA holder → -
KW 105S#https://drs.faa.gov/browse/excelExternalWindow/E7CF86CB920CD10786257E46005FAE8F.0001##
Incandescent Displays
WAMCO INC replaces KW 105S
PMA holder → -
KW 105S-TB#https://drs.faa.gov/browse/excelExternalWindow/FEA99A865DE3AADE86257E46005FAE25.0001##
Incandescent Displays
WAMCO INC replaces KW 105S-TB
PMA holder → -
KW 205S#https://drs.faa.gov/browse/excelExternalWindow/B4FCE80302C4576686257E46005FAE58.0001##
Incandescent Displays
WAMCO INC replaces KW 205S
PMA holder → -
KW 205S-PM-TB#https://drs.faa.gov/browse/excelExternalWindow/07F2035C289C5F5D86257E46005FADB3.0001##
Incandescent Displays
WAMCO INC replaces KW 205S-PM-TB
PMA holder → -
KW 205S-TB#https://drs.faa.gov/browse/excelExternalWindow/3FBD1065D40EF09A86257E46005FADF0.0001##
Incandescent Displays
WAMCO INC replaces KW 205S-TB
PMA holder → -
KW 205AL#https://drs.faa.gov/browse/excelExternalWindow/638E4D918BEB11D686257E46005FAD49.0001##
Incandescent Displays
WAMCO INC replaces KW 205AL
PMA holder → -
KW 205S-DP-TB#https://drs.faa.gov/browse/excelExternalWindow/3FF6A7E9A7D70B018625717600676344.0001##
Incandescent Displays
WAMCO INC replaces KW 205S-DP-TB
PMA holder → -
KW 205S#https://drs.faa.gov/browse/excelExternalWindow/628E499B1FDE265286257176006762ED.0001##
Incandescent Displays
WAMCO INC replaces KW 205S
PMA holder → -
KW 105S#https://drs.faa.gov/browse/excelExternalWindow/BFC18616FAECCC2D8625717600676319.0001##
Incandescent Displays
WAMCO INC replaces KW 105S
PMA holder → -
KW 205S-TB#https://drs.faa.gov/browse/excelExternalWindow/33E2E3BF519E5B99862571760067627F.0001##
Incandescent Displays
WAMCO INC replaces KW 205S-TB
PMA holder → -
KW 105S-TB#https://drs.faa.gov/browse/excelExternalWindow/5FF305F12CAD094C86257176006762B8.0001##
Incandescent Displays
WAMCO INC replaces KW 105S-TB
PMA holder → -
KW 205AL#https://drs.faa.gov/browse/excelExternalWindow/CCAD4C08DC1FC34D8625717600676215.0001##
Incandescent Displays
WAMCO INC replaces KW 205AL
PMA holder → -
KW 205S-PM-TB#https://drs.faa.gov/browse/excelExternalWindow/0ACD96A834E86765862571760067624C.0001##
Incandescent Displays
WAMCO INC replaces KW 205S-PM-TB
PMA holder → -
A483-()AM () represents three digits that designate the color code.#https://drs.faa.gov/browse/excelExternalWindow/0CF1C37A0C0240BA8625836A004F8860.0001##
Assembly Toilet Seat
AeroMade Industries LLC replaces BWD7031-7273 BWD7031-6628 BWD7031-7453 BWD7031-6499 BWD7031-501
PMA holder → -
A483-()AM () represents three digits that designate the color code.#https://drs.faa.gov/browse/excelExternalWindow/A9C14828336F69AA862582F800488D36.0001##
Assembly Toilet Seat
AeroMade Industries LLC replaces BWD7031-7273, BWD7031-6628, BWD7031-7453, BWD7031-6499, BWD7031-501
PMA holder → -
A483-( )AM#https://drs.faa.gov/browse/excelExternalWindow/AC51FC0DBDAA17A6862585500067327C.0001##
Assembly, Toilet Seat
AeroMade Industries LLC replaces BWD7031-7273 BWD7031-6628 BWD7031-7453 BWD7031-6499 BWD7031-501
PMA holder → -
8921069G5#https://drs.faa.gov/browse/excelExternalWindow/78E79978E005D0EC86258288005E25D7.0001##
Heater Panel
UTC Aerospace Systems, Goodrich Sensors & Integrated Systems replaces McDonnell Douglas PN SCD-7956497-507
PMA holder → -
8921069G1#https://drs.faa.gov/browse/excelExternalWindow/FF37EF97108F6FE086258288005E25CD.0001##
Heater Panel
UTC Aerospace Systems, Goodrich Sensors & Integrated Systems replaces McDonnell Douglas PN SCD-7956497-1
PMA holder → -
8921069G2#https://drs.faa.gov/browse/excelExternalWindow/1C2C03C2E399BB8686258288005E25D0.0001##
Heater Panel
UTC Aerospace Systems, Goodrich Sensors & Integrated Systems replaces McDonnell Douglas PN SCD-7956497-501
PMA holder →
+ 20 more PMA parts on file
04 / Regulations watching this type
Advisory Circulars and Federal Register activity for DOUGLAS DC-9-21
Advisory Circulars
ACs whose subject explicitly mentions DOUGLAS or DC-9-21.
Recent Federal Register activity
Latest rulemakings touching general operating rules (Part 91) and maintenance rules (Part 43).
- 2026-04-17 Settlement Policy for Small Unmanned Aircraft System (UAS) Cases FR ↗
- 2026-02-10 Normalizing Unmanned Aircraft Systems Beyond Visual Line of Sight Operations; Reopening of Comment Period; Denial of Extension FR ↗
- 2026-02-02 25-Hour Cockpit Voice Recorder (CVR) Requirement, New Aircraft Production FR ↗
- 2026-01-28 Normalizing Unmanned Aircraft Systems Beyond Visual Line of Sight Operations; Reopening of Comment Period FR ↗
- 2026-01-07 Requirements for Interference-Tolerant Radio Altimeter Systems FR ↗
05 / Aircraft of this type
All 1 registered N-numbers
Every tail currently on the FAA registry for this make/model. Click an N-number to query the FAA Aircraft Inquiry; rows flagged ● have NTSB events on file. Tails seeded with full TallyAero pages link directly.
| N-number | St | Year | NTSB | FAA |
|---|---|---|---|---|
| N127NK | CA | — | · | Look up ↗ |
Source — FAA Aircraft Registry · click "Look up" to query the live registry record (owner, address, last airworthiness)
05 / Sources & Methodology
Every count traces back to a primary US-government source
- FAA Aircraft Registry →
Refreshed Apr 27, 2026
Available
- NTSB CAROL →
Refreshed Apr 27, 2026
Available
- Federal Register (FAA Airworthiness Directives) →
Refreshed Apr 27, 2026
Available
We render counts and lists as the agency publishes them. Read the methodology →