Type Record · As of May 3, 2026
MAULE M-7-420
Fixed Wing Single Engine · ALLISON 250-B17 SER
Registered
2
Year Range
1990–1991
NTSB Events
1
Airworthiness Directives
3
Aircraft Resources
01 / Distribution
Where the fleet lives and was built
Counts of currently-registered MAULE M-7-420 aircraft by US state and decade of manufacture, sourced from the FAA Aircraft Registry.
By State (top 10)
- MA 50.0% 1
- DE 50.0% 1
By Decade of Manufacture
- 1990s 100.0% 2
02 / NTSB Records
Events involving MAULE M-7-420 aircraft
1 event(s) on file. Showing the most recent 1.
-
Jun 26, 1978
N7MTBILLINGS, Montana
NTSB Docket →
03 / Airworthiness Directives
FAA directives applicable to MAULE M-7-420
3 directive(s) on file. Showing the most recent 3.
-
May 20, 2009
Airworthiness Directives; Hartzell Propeller Inc. Steel Hub Turbine Propellers
The FAA is adopting a new airworthiness directive (AD) for Hartzell Propeller Inc. steel hub turbine propellers, with any counterweight slug attachment bolts, part number (P/N) B-3386-14H, LFC manufacturing lot 224, installed. This AD requires identifying and removing all counterweight slug attachment bolts, P/N B-338…
-
Jul 14, 2005
Airworthiness Directives; Hartzell Propeller Inc. Models HC-B3TN-2, HC-B3TN-3, HC-B3TN-5, HC-B3MN-3, HC-B4TN-3, HC-B4TN-5, HC-B4MN-5, HC-B4MP-3, HC-B4MP-5, and HC-B5MP-3 Propellers
The FAA is adopting a new airworthiness directive (AD) for Hartzell Propeller Inc. models HC-B3TN-2, HC-B3TN-3, HC-B3TN-5, HC- B3MN-3, HC-B4TN-3, HC-B4TN-5, HC-B4MN-5, HC-B4MP-3, HC-B4MP-5, and HC- B5MP-3 propellers, installed with propeller mounting bolts, part number (P/N) B-3339. This AD requires initial and repeti…
-
May 9, 2000
Airworthiness Directives; Maule Aerospace Technology, Inc. M-4, M-5, M-6, M-7, MX-7, and MXT-7 Series Airplanes and Models MT-7-235 and M-8-235 Airplanes
This amendment adopts a new airworthiness directive (AD) that applies to certain Maule Aerospace Technology, Inc. (Maule) M-4, M-5, M-6, M-7, MX-7, and MXT-7 series airplanes and Models MT-7-235 and M-8- 235 airplanes. This AD requires you to inspect all Nicopress<SUP>TM</SUP> sleeve terminal ends for correct size com…
04 / Type Certificate Data Sheets
FAA TCDS for MAULE M-7-420
The TCDS is the legal certification document — weight limits, performance, equipment, AD compliance times, operating limitations. 1 match in the FAA catalog.
- 3A23 Historical Rev 32 · 10/14/2015
Maule Aerospace Technology Inc.
Models: M-5-220C, Bee Dee M-4, MX-7-160C, M-7-235B + 47 more
06 / Supplemental Type Certificates
Modifications approved for MAULE M-7-420
434 STCs on file — every FAA-approved modification, alteration, or installation for this aircraft. STOL kits, avionics, fuel systems, floats, engine swaps, you name it.
-
03/03/2026
STC SA02511SE
Installation of replacement fuel quantity indicator sending unit(s)
CiES Inc.
-
12/09/2025
STC SA01005DE
Installation of a EarthX ETX900-TSO Lithium battery
EarthX Inc.
-
07/24/2025
STC SA02511SE
Installation of replacement fuel quantity indicator sending unit(s)
CiES Inc.
-
07/21/2025
STC SA02511SE
Installation of replacement fuel quantity indicator sending unit(s)
CiES Inc.
-
05/27/2025
STC SA5581SW
Installation of ALCOR true-flow/ totalizer system
Alcor LLC
-
05/27/2025
STC SA00081NY
Installation of Iceman Aviation Supplies, Inc. Carburetor Ice Detector.
Alcor LLC
-
04/01/2025
STC SA02738CH (PAGE 1)
Installation of L-3 Communications Avionics Systems
Acron Aviation Inc.
-
04/01/2025
STC SA04046CH Page 1
Installation of L-3 GENESIS (TM) Electronic Standby Instrument System (ESI-500/MAG-500)
Acron Aviation Inc.
-
03/01/2025
STC SA7965SW
Application of fabric and polyurethane finishing system.
Shady Aviation LLC
-
11/22/2024
STC SA04378CH
Installation of an engine modified per STC SE04349CH
SureFly Partners Ltd.
-
10/23/2024
STC SA39CH
Installation of an Amphibian Landing Gear Position Advisory System/Laser Gear Advisory System
Wipaire Inc.
-
09/26/2024
STC SA02594SE
SkyView HDX Instrumentation and Autopilot System manufactured
Dynon Avionics
-
08/27/2024
STC SA04837NY
Installation of AeroLED's Holdings, LLC., position lights, navigation lights, strobe lights and beacon lights
AeroLED's Holdings, LLC
-
08/27/2024
STC SA02386AK
Replacement of existing landing and/or taxi light reflector and bulbs with Light Emitting Diode (LED) lighting systems
AeroLED's Holding LLC
-
08/21/2024
STC SA01757WI
To allow the use of UL91 or UL94 (minimum) grade aviation fuel
Swift Fuels LLC
-
06/13/2024
STC SA02511SE
Installation of replacement fuel quantity indicator sending unit(s)
CiES Inc.
-
06/13/2024
STC SA02511SE (1 OF 3)
Installation of replacement fuel quantity indicator sending unit(s)
CiES Inc.
-
06/13/2024
STC SA02511SE (1 OF 2)
Installation of replacement fuel quantity indicator sending unit(s)
CiES Inc.
-
05/17/2024
STC SA4503NM (PAGE 1)
Remove original cloth covering and install Ceconite covering
Ceconite Division of Poly-Fiber Inc.
-
02/02/2024
STC SA02658SE (1 OF 2)
Installation of Garmin GI 275 Multi-Function Display System
Garmin International Inc.
-
12/12/2023
STC SA02571SE (PAGE 1)
Installation of Garmin G500/G600 TXi Integrated Avionics System (Primary Flight Display, Multi-Function Display, and Engine Indicating System Display).
Garmin International Inc.
-
08/16/2023
STC SA02576AK
Installation of Cleveland and ABI, LLC Wheel and Brake Kits
ABI LLC
-
08/10/2023
STC SA02019WI
Installation of the Trig Avionics TX56, TX56A, TX57, or TX57A VHF Nav-Com Radio.
Peregrine
-
07/19/2023
STC SA04378CH
Installation of an engine modified per STC SE04349CH on an aircraft listed on FAA approved model list #SA04378CH dated 1/13/19 or later FAA approved revision, IAW SureFly installat…
SureFly Partners Ltd.
-
05/22/2023
STC SA01435LA
Installation of engines modified with Firewall Forward Technologies LLC modified camshaft
Centri-Lube Technologies LLC
-
04/05/2023
STC SA00756DE
Installation of Automatic Dependent Surveillance Broadcast (ADS-B) Out Equipment using a Trig Avionics TT22 Transponder and an approved Global Positioning System (GPS) Position Se…
Peregrine
-
04/04/2023
STC SA11137SC
Installation of Plane-Power ALT-FLX alternator
Hartzell Engine Technologies, LLC
-
02/09/2023
STC SA01606CH
Installation of alternate electro-hydraulic power pack system for operation of main wheel skis.
F.Atlee Dodge Aircraft Services
-
01/10/2023
STC SA04378CH
Installation of an engine modified per STC SE04349CH on an aircraft listed on FAA approved model list #SA04378CH dated 1/13/19 or later FAA approved revision, IAW SureFly installat…
SureFly Partners Ltd
-
12/14/2022
STC SA01233SE
Fabrication and installation of Alaskan Bushwheel LLC tail wheel and fork assembly
ABI, LLC
+ 404 more STCs on file
07 / PMA replacement parts
FAA-approved replacement parts for MAULE M-7-420
12 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.
-
STS-S12#https://drs.faa.gov/browse/excelExternalWindow/4D1FADFAD9E0A0618625825900708E24.0001##
Solenoid Contactor - Starter
Lamar Technologies LLC replaces 70-112225-5
PMA holder → -
STS-S12#https://drs.faa.gov/browse/excelExternalWindow/0D1FABEF5B69424C8625825900708E25.0001##
Solenoid Contactor - Starter
Lamar Technologies LLC replaces SAZ-4201E
PMA holder → -
STS-S12#https://drs.faa.gov/browse/excelExternalWindow/E10285D4E616536986257DE9004D1120.0001##
Solenoid Contactor - Starter
Sky-Tec Partners Ltd replaces 70-112225-5, SAZ-4201E
PMA holder → -
STS-S12#https://drs.faa.gov/browse/excelExternalWindow/11BCA512D1C1742786257DCE005E8262.0001##
Solenoid Contactor - Starter
Sky-Tec Partners Ltd replaces 70-112225-5, SAZ-4201E
PMA holder → -
Master Drawing List CFMI 3000-9, Revision D, Dated 04/04/11#https://drs.faa.gov/browse/excelExternalWindow/52205BBF7CA61FE1862578A1004BC98B.0001##
Model 3000 Ski Installation Parts
Custom Fiberglass Molding Inc replaces Modification Part
PMA holder → -
Master Drawing List CFMI 3000-10, Revision F, Dated 04/04/11#https://drs.faa.gov/browse/excelExternalWindow/84D7373B27CC8860862578A1004BC9CB.0001##
Model 3000-01 A/B) Ski Installation Parts
Custom Fiberglass Molding Inc replaces Modification Part
PMA holder → -
ST-892-20/30#https://drs.faa.gov/browse/excelExternalWindow/BEAFA1F8CF2A9204862576DA005926D1.0001##
System 20/30 Single and Two Axis Automatic Flight Guidance Systems
S-TEC Corporation replaces Modification Part
PMA holder → -
ST-890#https://drs.faa.gov/browse/excelExternalWindow/136FB060DEEBC722862576DA005926A5.0001##
System 55X Two Axis Automatic Flight Guidance System
S-TEC Corporation replaces Modification Part
PMA holder → -
ST-872-20/30#https://drs.faa.gov/browse/excelExternalWindow/43A70BE639F25C64862576DA0059258C.0001##
System 20/30 Single and Two Axis Automatic Flight Guidance Systems
S-TEC Corporation replaces Modification Part
PMA holder → -
ST-810-20/30#https://drs.faa.gov/browse/excelExternalWindow/881F7C4E8690721B862576DA00592552.0001##
System 20/30 Single and Two Axis Automatic Flight Guidance Systems
S-TEC Corporation replaces Modification Part
PMA holder → -
94016-02#https://drs.faa.gov/browse/excelExternalWindow/8FB5FBE2331591928525703D005FB814.0001##
Isolator, Vibration
Hutchinson Aerospace & Industry Inc replaces 94016-02
PMA holder → -
93110-08#https://drs.faa.gov/browse/excelExternalWindow/6CF24A7BEB10D1EB8525703D005FB87D.0001##
Isolator, Engine
Hutchinson Aerospace & Industry Inc replaces 93110-08
PMA holder →
09 / Equivalent Level of Safety findings
ELOS findings issued for MAULE M-7-420
1 ELOS finding on file. The FAA issues an ELOS when an applicant proposes an alternative means that achieves the same safety outcome as a literal regulation — a standing record of which certification deviations the agency has approved for this model series.
-
ACE-09-10
07/06/2009 →Ignition Switches
04 / Regulations watching this type
Advisory Circulars and Federal Register activity for MAULE M-7-420
Advisory Circulars
No ACs explicitly mention this type. Showing universal operating-rule ACs that apply to all aircraft.
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 2 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.
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 →