Type Record · As of May 3, 2026
SIKORSKY S-61NM
Rotorcraft · GE CT58-140-2
Registered
1
NTSB Events
0
Airworthiness Directives
8
Aircraft Resources
01 / Distribution
Where the fleet lives and was built
Counts of currently-registered SIKORSKY S-61NM aircraft by US state and decade of manufacture, sourced from the FAA Aircraft Registry.
By State (top 10)
- OR 100.0% 1
By Decade of Manufacture
- Unknown 100.0% 1
02 / NTSB Records
Events involving SIKORSKY S-61NM aircraft
No NTSB-recorded events match SIKORSKY S-61NM in the indexed corpus.
03 / Airworthiness Directives
FAA directives applicable to SIKORSKY S-61NM
8 directive(s) on file. Showing the most recent 8.
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Apr 21, 2026
Airworthiness Directives; Various Helicopters
The FAA proposes to supersede Airworthiness Directive (AD) 2015-20-12, which applies to certain Sikorsky Aircraft Corporation Model S-61A, D, E, L, N, NM serial number (S/N) 61454, R, and V; Croman Corporation Model SH-3H; Carson Helicopters, Inc., Model S-61L and SH- 3H; Glacier Helicopter, Inc., Model CH-3E; Robinso…
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Mar 13, 2026
Airworthiness Directives; Various Helicopters
The FAA proposes to adopt a new airworthiness directive (AD) for various helicopters. This proposed AD was prompted by a report of a loss of tail rotor authority due to auxiliary system fluid loss caused by a yaw pedal damper housing fatigue fracture and attachment bolt fatigue fracture. This proposed AD would require…
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Apr 2, 2021
Airworthiness Directives; Sikorsky Aircraft and Sikorsky Aircraft Corporation Helicopters
The FAA is adopting a new airworthiness directive (AD) for Sikorsky Aircraft Model S-61L, S-61N, S-61NM, and S-61R helicopters and Sikorsky Aircraft Corporation Model S-61A, S-61D, S-61E, and S-61V restricted category helicopters. This AD was prompted by the manufacturer determining that there may be arm assemblies in…
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Oct 26, 2020
Airworthiness Directives; Sikorsky Aircraft and Sikorsky Aircraft Corporation Helicopters
The FAA proposes to adopt a new airworthiness directive (AD) for all Sikorsky Aircraft Model S-61L, S-61N, S-61NM, and S-61R helicopters and Sikorsky Aircraft Corporation Model S-61A, S-61D, S- 61E, and S-61V restricted category helicopters. This proposed AD was prompted by the manufacturer determining that there may…
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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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Feb 22, 2005
Airworthiness Directives; General Electric Company CT58 Series and Surplus Military T58 Series Turboshaft Engines
The FAA is adopting a new airworthiness directive (AD) for General Electric Company (GE) CT58-140-1, CT58-140-2, and surplus military T58-GE-5, -10, -100, and -402 turboshaft engines with certain serial numbers (SNs) of stage 1 compressor disks, part number (P/N) 5001T20P01, installed. This AD requires removing certai…
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Feb 26, 2004
Airworthiness Directives; General Electric Company CT58 and T58 Series Turboshaft Engines
The FAA proposes to adopt a new airworthiness directive (AD) for General Electric Company (GE) CT58-140-1, CT58-140-2, and T58-GE-5, -10, -100, and -402 series turboshaft engines with certain serial numbers (SNs) of stage 1 compressor disks, part number (P/N) 5001T20P01, installed. This proposed AD would require remov…
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Feb 23, 2004
Airworthiness Directives; General Electric Company CT58 Series and T58 Series Turboshaft Engines
The FAA is adopting a new airworthiness directive (AD) for certain General Electric Company (GE) CT58-100-2, CT58-140-1, -140-2, and T58-GE-1, -3, -5, -8E, -8F, -10, -100, and -402 turboshaft engines. This AD requires the removal from service of certain fuel flow divider assemblies. This AD results from a report that…
04 / Type Certificate Data Sheets
FAA TCDS for SIKORSKY S-61NM
The TCDS is the legal certification document — weight limits, performance, equipment, AD compliance times, operating limitations. 1 match in the FAA catalog.
- 1H15 Historical Rev 17 · 12/07/2012
Sikorsky Aircraft
Models: S-61NM, S-61R, S-61L, S-61N
06 / Supplemental Type Certificates
Modifications approved for SIKORSKY S-61NM
61 STCs on file — every FAA-approved modification, alteration, or installation for this aircraft. STOL kits, avionics, fuel systems, floats, engine swaps, you name it.
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03/21/2024
STC SR00814SE
Fabrication of reinforcement kit - aft fuselage station 493. For model S61A, applies to S/N 61094. For model S61NM, applies to S/N 66454
Croman Corporation
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03/21/2024
STC SR01264SE
Fabrication of Helipro replacement windshields
Croman Corporation
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04/14/2023
STC SH3319NM
Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,
Precise Flight Inc
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04/06/2023
STC SR02279AK
Installation of dual Rockwell Collins FDS 2000 flight displays, dual AHS 3000 attitude and heading reference systems, dual Garmin GNS 530 navigation systems and supporting avionics…
Croman Corporation
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02/27/2023
STC SR04501CH
The certification of various configurations of cockpit side windows
CHI Aviation
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10/20/2022
STC SR01127SE
Modification of main rotor blade part number 61170-20201 in accordance with Master Drawing List RR 9633-08, Revision A, dated September 17, 2002, or later FAA approved revision. R…
Park Technologies, LLC
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02/05/2021
STC SR04501CH
The certification of various configurations of cockpit side windows, in accordance with CHI Aviation drawing list CHI-201901-110, Revision A, or later FAA approved revisions.
CHI Aviation
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11/03/2020
STC SR04483CH
Installation of NASI NREM18M Air Conditioning Module
National Aircraft Service Inc. (NASI)
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05/19/2020
STC SH3319NM (1 OF 2)
Installation of Precise Flight Pulselite Control Unit in the\nLanding /Taxi Recognition Visual Control Light system,
Precise Flight Inc
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03/24/2020
STC SR00925DE
Installation of Garmin GTX 335/335R and GTX345/345R transponders to provide ADS-B Out and In functionality
Peregrine
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11/08/2019
STC SR04401NY
Increase of Out of Ground Effect (OGE) Hover Performance
Carson Helicopters Inc
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06/13/2019
STC SR00925DE
Installation of Garmin GTX 335/335R and GTX345/345R transponders to provide ADS-B Out and In functionality
Peregrine
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05/19/2019
STC SR00925DE
Installation of Garmin GTX 335/335R and GTX345/345R transponders to provide ADS-B Out and In functionality
Peregrine
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02/20/2019
STC SR04122NY
The Installation of Carson Helicopters, Inc. Composite Tail Rotor Blade and Pitch Sleeve, part number 428-600-1,
Carson Helicopters Inc
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07/13/2018
STC SR02487NY
Increased Category A Performance for the Sikorsky S-61L, S-61N and S-61NM Helicopters.
Carson Helicopters, Inc
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04/25/2018
STC SR04122NY
The Installation of Carson Helicopters, Inc. Composite Tail Rotor Blade and Pitch Sleeve, part number 428-600-1,
Carson Helicopters, Inc
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12/29/2016
STC SH3319NM
Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,
Precise Flight Inc
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12/01/2015
STC SR02267SE
Fabrication of replacement transmission fittings
Croman Corporation
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01/14/2015
STC SR02394AK
Replacement of existing landing and/or hover light bulbs with Light Emitting Diode (LED) lighting system
Seaplanes North LLC
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06/09/2014
STC SH3319NM
Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,
Precise Flight Inc
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03/19/2014
STC SR03310CH
Installation of NASI Air Conditioning Module
National Aircraft Service Inc
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03/06/2014
STC SR02501LA
Removal of the Bendix 30E20-11-C 300 Amp Starter Generator and installation of the AMETEK Aerospace MG105A-1, 300 Amp Starter Generator
Carson Helicopters, Inc
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09/10/2013
STC SR01426SE
Fabrication and installation of components for a left seat pilot-in-command operation.
Croman Corporation
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07/25/2013
STC SH3319NM
Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,
Precise Flight Inc
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06/07/2013
STC SR00319SE
Modification of Part Number S6137-23009-6 main transmission rear cover per
Croman Corporation
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06/03/2013
STC SR01534SE
Installation of the transmission input modification to the main gear box
Croman Corporation
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10/17/2012
STC SH3319NM
Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,
Precise Flight Inc
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05/23/2012
STC SR02394AK
Replacement of existing landing and/or hover light bulbs with Light Emitting Diode (LED) lighting system
Floats Alaska LLC
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03/15/2012
STC SR02394AK
Replacement of existing landing and/or hover light bulbs with Light Emitting Diode (LED) lighting system per Installation Instructions LED03-20R, Rev. IR, dated October 27, 2010.
Floats Alaska LLC
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02/21/2012
STC SH3319NM
Installation of Precise Pulselite Control System
Precise Flight Inc
+ 31 more STCs on file
04 / Regulations watching this type
Advisory Circulars and Federal Register activity for SIKORSKY S-61NM
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 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 |
|---|---|---|---|---|
| N618CK | OR | — | · | 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 →