Skip to content
KnownTail
Aircraft record

N420GC2005 Md Helicopters INC 600N

Registration validUnclaimedSource: FAA, updated Oct 17, 2026

Safety record in brief:No NTSB accidents or incidents since 198217 ADs may apply

Registration
Valid
expires Sep 30, 2028
Engine
250-C47M · 650 hp
Allison
Owners
1
since 2021
NTSB events
None
since 1982
ADs may apply
17
confirm with A&P
Service reports
0
since 1995

Registration

FAA Aircraft Registry · Oct 17, 2026
Registered owner
Name not published by the FAA
Certificate issued
Sep 21, 2021
Expires
Sep 30, 2028
Airworthiness
Standard · Normal
Airworthiness date
Mar 20, 2022

We never show street addresses, even though they appear in the public FAA file. Individual owners are shown by city and state only.

Airframe & engine

FAA Registry + type data

Airframe

Manufacturer
Md Helicopters INC
Model
600N
Year
2005
Serial number
RN053
Aircraft type
Rotorcraft
Category
Land
Certification
Type Certificated
Seats
4
Engines
1
Max takeoff weight
12,500 - 19,999 lb
Type certificate data sheet
H3WE
Mode S code
A4FC38

Engine

Make and model
Allison 250-C47m
Type
Turbo-shaft
Power
650 hp

Total time and engine hours aren't public. They appear here once the owner adds logbooks.

Ownership history

Ownership history from FAA records
  1. 2021 – nowName not published by the FAAcurrent
  2. 2011Individual ownerLos Angeles, CA · different airframe: 1973 Cessna 421b S/N 421b0464

Individual owners are shown by city and state only.

Safety record

NTSB · Oct 15, 2026 · FAA ADs · Oct 17, 2026 · SDRs · Oct 16, 2026

NTSB events (0)

No NTSB accidents or incidents found for this airframe since 1982.

Accident history for this model

ADs published since 1998 that may apply (17)

These match the airframe or engine model. Whether each one applies, and whether it's been complied with, depends on serial numbers, equipment and logbook entries. Applicability must be confirmed by a mechanic against the aircraft's records.

ADSubjectEffectiveApplies to
2021-22-11MD Helicopters Inc. (MDHI) HelicoptersJan 10, 2022Airframe (600N)Only with: Pilot-to-copilot tail rotor torque tube P/N 369H7531-9, -11, or -13 installed.
2020-18-20MD Helicopters Inc. (MDHI), HelicoptersOct 28, 2020Airframe (600N)Only with: With MR blade P/N 500P2100-105, 500P2100-305, 500P2300-505, 369D21120-505, 369D21121-505, or 369D21123-505 having a 1.25 inch chord nickel abrasion strip manufactured or installed by HTC or of unknown manufacturer, with less than 700 hours TIS on the abrasion strip.
2020-06-11MD Helicopters Inc. HelicoptersApr 28, 2020Airframe (600N)Only with: With a yaw stability augmentation system and main rotor blade upper control collective/longitudinal link assembly P/N 600N7617-1 installed.
2019-05-04MD Helicopters, Inc. (MDHI), HelicoptersApr 17, 2019Airframe (600N)Only with: Main rotor blade P/N 369A1100, 369D21100, 369D21102, 369D21120, 369D21121, 369D21123, 500P2100, or 500P2300, all dash numbers, installed.
2016-04-15MD Helicopters Inc., HelicoptersMar 31, 2016Airframe (600N)Only with: Aerometals main rotor blade attach pin P/N 369X1004-5 installed.
Show all 17 ADs
ADSubjectEffectiveApplies to
2016-01-19MD Helicopters Inc.Feb 25, 2016Airframe (600N)Only with: Model 500N with rotating cone assembly P/N 500N3740-81 installed; Model 600N with rotating cone assembly P/N 500N3740-71 installed.
2013-03-03MD Helicopters, Inc., HelicoptersMar 15, 2013Airframe (600N)Only with: Models 500N and 600N with NOTAR fan blade T-T strap P/N 500N5311-5 installed; Model MD900 with T-T strap P/N 500N5311-5, 900R3442009-101, 900R3442009-103, or 900R6442009-103 installed.
2008-22-52MD Helicopters, Inc. Model 500N and 600N HelicoptersDec 15, 2008Airframe (600N)Only with: YSAS adapter tube P/N 500N7218-1 installed, excluding adapter tubes that have a production date code stamp.
2008-20-05MD Helicopters, Inc. Model 600N HelicoptersOct 27, 2008Airframe (600N)Certain serial numbers: 600N RN003–RN058. Only with: Applies only to helicopters not modified in the fuselage aft section to strengthen the tailboom attachments and longerons per MDHI Technical Bulletin TB600N-007 (original, Revision 1, or Revision 2).
2006-16-04Rolls-Royce Corporation (Formerly Allison Engine Company, Allison Gas Turbine Division…Sep 7, 2006Engine (250-C47M)
2005-21-02MD Helicopters, Inc. Model 369D, 369E, 369F, 369FF, 500N, and 600N HelicoptersNov 1, 2005Airframe (600N)Only with: With an MDHI main rotor blade installed, or modified per HTC STC No. SR09172RC, SR09074RC, or SR01050LA with an HTC blade installed, as listed in the AD table by part number.
2004-24-04Rolls-Royce Corporation (Formerly Allison Engine Company, Allison Gas Turbine Division…Jan 3, 2005Engine (250-C47M)Only with: Engines with a hydromechanical unit (HMU) P/N listed in 1.A. Group A of RRC Alert CEB A-73-3103, Revision 4, and CEB A-73-6030, Revision 4, both dated December 2, 2003.
2003-16-11MD Helicopters, Inc., Model 600N HelicoptersSep 30, 2003Airframe (600N)Only with: Main rotor drive shaft assembly P/N 600N5510-1 installed.
2001-24-51MD Helicopters, Inc. Model 600N HelicoptersApr 29, 2002Airframe (600N)Certain serial numbers: 600N RN003–RN063
2000-08-22MD Helicopters Inc. Model 369D, 369E, 500N, and 600N HelicoptersMay 22, 2000Airframe (600N)Only with: Analog/digital TOT indicator P/N 369D24513-1 installed (369D, 369E, 500N) or P/N 9A3420 installed (600N).
99-20-12MD Helicopters Inc. Model 369D, D369E, 369FF, 500N, and 600N HelicoptersNov 4, 1999Airframe (600N)Only with: Oil cooler blower bracket P/N 369F5190-1 installed.
99-17-18MD Helicopters, Inc. Model 600N HelicoptersSep 24, 1999Airframe (600N)

AI-extracted — verify against original. Matched from each AD's applicability section; ADs replaced by a later AD are left out.

Service Difficulty Reports (0)

No Service Difficulty Reports found for this airframe since 1995.

Related aircraft

Show all 8 related aircraft
All 11 registered Md Helicopters INC 600N aircraft

Sources

  • FAA Aircraft RegistryRegistration, owner city and state, airframe, engineupdated Oct 17, 2026
  • NTSB accident and incident databaseAccidents and incidents since 1982updated Oct 15, 2026
  • FAA Airworthiness Directives (Federal Register)ADs published since 1998updated Oct 17, 2026
  • FAA Service Difficulty ReportsReports since 1995updated Oct 16, 2026

Request owner name removalReport an error in this record

Claim this airplaneAlerts