Type Record · As of May 3, 2026
MD HELICOPTERS INC MD 900
Rotorcraft
Registered
11
Year Range
2000–2007
NTSB Events
2
Airworthiness Directives
38
01 / Distribution
Where the fleet lives and was built
Counts of currently-registered MD HELICOPTERS INC MD 900 aircraft by US state and decade of manufacture, sourced from the FAA Aircraft Registry.
By State (top 10)
- DE 36.4% 4
- OR 27.3% 3
- AZ 9.1% 1
- NE 9.1% 1
- TX 9.1% 1
- MO 9.1% 1
By Decade of Manufacture
- 2000s 72.7% 8
- Unknown 27.3% 3
02 / NTSB Records
Events involving MD HELICOPTERS INC MD 900 aircraft
2 event(s) on file. Showing the most recent 2.
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Nov 27, 2014
N902LCHighlandville, Missouri Minor
NTSB Docket → -
Mar 22, 2006
N912LHMesa, Arizona
NTSB Docket →
03 / Airworthiness Directives
FAA directives applicable to MD HELICOPTERS INC MD 900
38 directive(s) on file. Showing the most recent 25 · 13 more in the Federal Register.
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Mar 16, 2022
Airworthiness Directives; Goodrich Externally-Mounted Hoist Assemblies
The FAA is adopting a new airworthiness directive (AD) for various model helicopters with certain part-numbered Goodrich externally-mounted hoist assemblies (hoists) installed. This AD was prompted by hoists failing lower load limit inspections. This AD requires replacing unmodified hoists, installing placards, revisi…
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Sep 30, 2021
Airworthiness Directives; Goodrich Externally-Mounted Hoist Assemblies
The FAA is revising a notice of proposed rulemaking (NPRM) for various model helicopters with certain part-numbered Goodrich externally-mounted hoist assemblies (hoists) installed. This action revises the NPRM by adding a figure and revising certain requirements. The FAA is proposing this airworthiness directive (AD)…
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Dec 11, 2020
Airworthiness Directives; Goodrich Externally-Mounted Hoist Assemblies
The FAA proposes to adopt a new airworthiness directive (AD) for various model helicopters with certain part-numbered Goodrich externally-mounted hoist assemblies (hoists) installed. This proposed AD would require replacing unmodified hoists, installing placards, revising the existing Rotorcraft Flight Manual (RFM) fo…
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Aug 21, 2017
Airworthiness Directives; MD Helicopters, Inc., Helicopters
We are superseding Airworthiness Directive (AD) 2014-16-01 for MD Helicopters, Inc. (MDHI), Model MD900 helicopters. AD 2014-16-01 required an eddy current inspection of the main rotor upper hub assembly (upper hub) for a crack. This AD requires additional inspections and replacing the fillet seal. This AD was prompte…
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Jun 6, 2017
Airworthiness Directives; Honeywell International Inc. (Honeywell) Enhanced Ground Proximity Warning System (EGPWS)
We propose to adopt a new airworthiness directive (AD) for various normal and transport category rotorcraft with certain Honeywell EGPWS installed. This proposed AD would require updating the software version of the EGPWS. This proposed AD is prompted by a software defect that prevents the EGPWS from providing terrain…
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Apr 3, 2017
Airworthiness Directives; MD Helicopters, Inc. Helicopters
We propose to supersede airworthiness directive (AD) 2014-16- 01 for MD Helicopters, Inc. (MDHI) Model MD900 helicopters. AD 2014-16- 01 requires an eddy current inspection of the main rotor upper hub assembly (upper hub) for a crack. Since we issued AD 2014-16-01, three additional upper hub cracks were reported. This…
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Aug 5, 2014
Airworthiness Directives; MD Helicopters, Inc., Helicopters
We are adopting a new airworthiness directive (AD) for MD Helicopters, Inc. (MDHI), Model MD900 helicopters. This AD requires an eddy current inspection of the main rotor upper hub assembly (upper hub) for a crack and replacing the upper hub with an airworthy upper hub before further flight if there is a crack. This A…
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Oct 31, 2013
Airworthiness Directives; MD Helicopters, Inc. (MDHI) Helicopters
We are adopting a new airworthiness directive (AD) for MDHI Model MD900 helicopters with certain main rotor blade (MRB) retention bolts (bolts) installed. This AD requires a daily check of the position of each bolt, a daily check and a repetitive inspection for a gap in each bolt, and, if necessary, removing and inspe…
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Jun 28, 2013
Airworthiness Directives; Various Helicopter Models
We are publishing a new airworthiness directive (AD) for various model helicopters with certain part-numbered and serial- numbered Goodrich externally-mounted hoists installed. This AD requires performing a cable conditioning lift and a load inspection test, deactivating or replacing any hoist that fails the load insp…
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Jun 14, 2013
Airworthiness Directives; MD Helicopters, Inc. (MDHI), Helicopters
We propose to adopt a new airworthiness directive (AD) for the MDHI Model MD900 helicopters with certain main rotor blade (MRB) retention bolts (bolts) installed. This proposed AD would require a daily check of the position of each bolt and would also require a daily check and a repetitive inspection for a gap in each…
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Feb 8, 2013
Airworthiness Directives; MD Helicopters, Inc., Helicopters
We are adopting a new airworthiness directive (AD) for MD Helicopters, Inc. (MDHI) Model 500N, 600N and MD900 helicopters to require determining the cure date for each NOTAR fan blade tension- torsion strap (T-T strap), establishing a calendar-time retirement life for certain T-T straps, reducing the retirement life o…
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Oct 23, 2012
Airworthiness Directives; MD Helicopters, Inc.
We are adopting a new airworthiness directive (AD) to supersede an existing airworthiness directive for MD Helicopters, Inc. (MDHI), Model MD900 helicopters. The existing AD requires a visual inspection, and if necessary, an eddy current inspection of the main rotor lower hub assembly (lower hub) for a crack. If a cra…
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Jul 19, 2012
Airworthiness Directives; MD Helicopters, Inc. (MDHI) Helicopters
We propose to adopt a new airworthiness directive (AD) for MDHI Model 500N, 600N, and MD900 helicopters to require determining the cure date for each NOTAR fan blade tension-torsion strap (T-T strap), establishing a calendar-time retirement life for certain T-T straps, reducing the retirement life of certain T-T strap…
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Mar 29, 2012
Airworthiness Directives; MD Helicopters, Inc.
We propose to supersede an existing airworthiness directive (AD) for MD Helicopters, Inc. (MDHI) Model MD900 helicopters. The existing AD requires a visual inspection, and if necessary, an eddy current inspection of the main rotor lower hub assembly (lower hub) for a crack. If a crack exists, the AD requires replacing…
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Nov 8, 2011
Airworthiness Directives; MD Helicopters, Inc. Model MD900 Helicopters
This amendment supersedes an existing airworthiness directive (AD) that applies to MD Helicopters, Inc. (MDHI) Model MD900 helicopters. That AD currently requires turning ON both Vertical Stabilizer Control System (VSCS) switches and turning OFF the autopilot (AP/SAS) switch; pulling certain AP/SAS circuit breakers; i…
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Jul 15, 2011
Airworthiness Directives; MD Helicopters, Inc. Model MD900 Helicopters
This amendment supersedes an existing airworthiness directive (AD) for MD Helicopters, Inc. (MDHI) Model MD900 helicopters. That AD currently requires visually inspecting the main rotor lower hub assembly (lower hub) for a crack, and if you find a crack, before further flight, replacing the unairworthy lower hub with…
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Jan 14, 2011
Airworthiness Directives; MD Helicopters, Inc. (MDHI) Model MD900 Helicopters
This document proposes superseding an existing airworthiness directive (AD) for MDHI Model MD900 helicopters. That AD currently requires turning on both Vertical Stabilizer Control System (VSCS) switches and turning off the autopilot (AP/SAS) switch; pulling certain AP/SAS circuit breakers; installing a placard near t…
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Nov 16, 2010
Airworthiness Directives; MD Helicopters, Inc. Model MD900 Helicopters
This document publishes in the Federal Register an amendment adopting Emergency Airworthiness Directive (AD) 2010-18-52 which was sent previously to all known owners and operators of MD Helicopters, Inc. (MDHI) Model MD900 helicopters by individual letters. This AD requires visually inspecting the main rotor hub (hub)…
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Apr 9, 2009
Airworthiness Directives; MD Helicopters, Inc. Model MD900 (including the MD902 Configuration) Helicopters
This amendment adopts a new airworthiness directive (AD) for the specified MD Helicopters, Inc. (MDHI) model helicopters that requires, within 30 days, reducing the current gross weight limit to a maximum gross weight limit of 5,400 pounds and inserting a copy of this AD into the Limitations section of the Rotorcraft…
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Dec 24, 2008
Airworthiness Directives; MD Helicopters, Inc. Model MD900 Helicopters
This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) 2008-17-51, which was sent previously to all known U.S. owners and operators of MD Helicopters, Inc. (MDHI) Model MD900 helicopters by individual letters. This AD requires, before further flight, fluorescent magnetic par…
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Dec 2, 2008
Airworthiness Directives; MD Helicopters, Inc. Model MD900 Helicopters
This document supersedes AD 2008-18-52 and publishes in the Federal Register an amendment adopting Emergency Airworthiness Directive (AD) 2008-22-53 which was sent previously to all known U.S. owners and operators of MD Helicopters, Inc. (MDHI) Model MD900 helicopters by individual letters. This AD requires turning ON…
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Nov 28, 2008
Airworthiness Directives; MD Helicopters, Inc. Model 500N and 600N Helicopters
This document supersedes AD 2008-18-52 and publishes in the Federal Register an amendment adopting Emergency Airworthiness Directive (AD) 2008-22-52 which was sent previously to all known U.S. owners and operators of MD Helicopters, Inc. (MDHI) Model 500N and 600N helicopters by individual letters. This AD requires tu…
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Jul 28, 2008
Airworthiness Directives; MD Helicopters, Inc. Model MD900 (including the MD902 Configuration) Helicopters
This document proposes adopting a new airworthiness directive (AD) for the specified MD Helicopters, Inc. (MDHI) model helicopters that would require, within 30 days, reducing the current gross weight limit to a maximum gross weight limit of 5,400 pounds and inserting a copy of this AD into the Limitations section of…
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Apr 28, 2008
Airworthiness Directives; MD Helicopters, Inc. Model MD900 Series Helicopters
This amendment adopts a new airworthiness directive (AD) for MD Helicopters, Inc. (MDHI) Model MD900 series helicopters that requires modifying the pilot and co-pilot dual-control directional pedal assemblies, or the pilot single-control directional pedal assembly (directional control pedal assembly). This amendment i…
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Oct 17, 2006
Airworthiness Directives; MD Helicopters, Inc. Model MD900 Series Helicopters
This document proposes adopting a new airworthiness directive (AD) for MD Helicopters, Inc. (MDHI) Model MD900 series helicopters. The AD would require modifying the pilot and co-pilot dual-control directional pedal assemblies, or the pilot single-control directional pedal assembly (directional control pedal assembly)…
07 / PMA replacement parts
FAA-approved replacement parts for MD HELICOPTERS INC MD 900
4 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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8003#https://drs.faa.gov/browse/excelExternalWindow/64519DE7D7E5055686257A8B005FDC0E.0001##
Elbow, Vent Adapter
Concorde Battery Corp replaces 8003
PMA holder → -
RG-407#https://drs.faa.gov/browse/excelExternalWindow/A48EC2FA81952A5786257A8B005FDC03.0001##
Battery
Concorde Battery Corp replaces SAFT 27578-2
PMA holder → -
5-0349#https://drs.faa.gov/browse/excelExternalWindow/6C4C49B1839211DA86257A8B005FDC0B.0001##
Elbow Coupling Assy
Concorde Battery Corp replaces 5-0349
PMA holder → -
8086#https://drs.faa.gov/browse/excelExternalWindow/D26A95860E6CC72786257A8B005FDC10.0001##
Coupling
Concorde Battery Corp replaces 8086
PMA holder →
04 / Regulations watching this type
Advisory Circulars and Federal Register activity for MD HELICOPTERS INC MD 900
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 11 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 |
|---|---|---|---|---|
| N353KK | DE | — | · | Look up ↗ |
| N359SA | AZ | 2000 | · | Look up ↗ |
| N451CJ | NE | — | · | Look up ↗ |
| N70431 | DE | — | · | Look up ↗ |
| N881LT | TX | 2006 | · | Look up ↗ |
| N902EA | DE | 2000 | · | Look up ↗ |
| N902GB | DE | 2001 | · | Look up ↗ |
| N902LC | MO | 2007 | ● | Look up ↗ |
| N902TX | OR | 2001 | · | Look up ↗ |
| N904AF | OR | 2001 | · | Look up ↗ |
| N912LH | OR | 2001 | ● | 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 →