Type Record · As of May 3, 2026
SIKORSKY S-61A
Rotorcraft · GE CT58-140-1
Registered
5
Year Range
1960–1964
NTSB Events
2
Airworthiness Directives
26
Aircraft Resources
01 / Distribution
Where the fleet lives and was built
Counts of currently-registered SIKORSKY S-61A aircraft by US state and decade of manufacture, sourced from the FAA Aircraft Registry.
By State (top 10)
- OR 80.0% 4
- OK 20.0% 1
By Decade of Manufacture
- 1960s 100.0% 5
02 / NTSB Records
Events involving SIKORSKY S-61A aircraft
2 event(s) on file. Showing the most recent 2.
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Aug 19, 2015
N1043TIronside, Oregon Minor
NTSB Docket → -
Aug 11, 2001
N5193YWrangell, Alaska
NTSB Docket →
03 / Airworthiness Directives
FAA directives applicable to SIKORSKY S-61A
26 directive(s) on file. Showing the most recent 25 · 1 more in the Federal Register.
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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…
-
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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May 27, 2021
Airworthiness Directives; Carson Helicopters, Inc.; Croman Corporation; Sikorsky Aircraft Corporation; and Siller Helicopters
The FAA is adopting a new airworthiness directive (AD) for all Carson Helicopters, Inc., Model S-61L and SH-3H helicopters; Croman Corporation Model SH-3H helicopters; Sikorsky Aircraft Corporation Model S-61A, S-61D, S-61E, and S-61V helicopters; and Siller Helicopters Model CH-3E and SH-3A helicopters. This AD was p…
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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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Mar 15, 2021
Airworthiness Directives; Carson Helicopters, Inc.; Croman Corporation; Sikorsky Aircraft Corporation; and Siller Helicopters
The FAA is revising an earlier proposal for all Sikorsky Aircraft Corporation Model S-61 A, D, E, and V helicopters; Croman Corporation Model SH-3H helicopters, Carson Helicopters, Inc. Model S- 61L helicopters; and Siller Helicopters Model CH-3E and SH-3A helicopters. This action revises the notice of proposed rulema…
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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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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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Oct 20, 2015
Airworthiness Directives; Various Sikorsky-Manufactured Transport and Restricted Category Helicopters
We are superseding Airworthiness Directive (AD) 98-26-02 for certain Sikorsky Aircraft Corporation (Sikorsky) Model S-61A, D, E, L, N, NM, R, and V helicopters. AD 98-26-02 required determining whether the main rotor shaft (MRS) was used in repetitive external lift (REL) operations, performing a nondestructive inspect…
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Oct 8, 2014
Airworthiness Directives; Various Sikorsky-Manufactured Transport and Restricted Category Helicopters
We are revising an earlier proposed airworthiness directive (AD) for certain Sikorsky Aircraft Corporation (Sikorsky) Model S-61A, D, E, L, N, NM (serial number 61454), R, and V; Croman Corporation Model SH-3H, Carson Helicopters, Inc., Model S-61L; Glacier Helicopters, Inc. Model CH-3E; Robinson Air Crane, Inc. Model…
-
Apr 25, 2013
Airworthiness Directives; Various Sikorsky-Manufactured Transport and Restricted Category Helicopters
We are revising the proposals in an earlier notice of proposed rulemaking (NPRM) for certain Sikorsky Aircraft Corporation (Sikorsky) Model S-61A, D, E, L, N, NM (serial number 61454), R, and V; Croman Corporation Model SH-3H, Carson Helicopters, Inc., Model S-61L; Glacier Helicopters, Inc. Model CH-3E; Robinson Air C…
-
Mar 22, 2013
Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters
We are adopting a new airworthiness directive (AD) for Sikorsky Aircraft Corporation (Sikorsky) Model S-61A, D, E, L, N, NM, R, and V helicopters to require replacing each forward and aft fuel system 40 micron fuel filter element with a 10 micron nominal (40 micron absolute) fuel filter element. This AD was prompted b…
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Feb 3, 2012
Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters
We propose to adopt a new airworthiness directive (AD) for Sikorsky Aircraft Corporation (Sikorsky) Model S-61A, D, E, L, N, NM, R, and V helicopters to require replacing each forward and aft fuel system 40 micron fuel filter element with a 10 micron fuel filter element. This proposed AD is prompted by a National Tran…
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Oct 27, 2008
Airworthiness Directives; General Electric Company (GE) CT58 Series Turboshaft Engines
The FAA is adopting a new airworthiness directive (AD) for certain GE CT58 series turboshaft engines. This AD requires recalculating the lives of certain part numbered compressor spools using a new repetitive heavy lift (RHL) multiplying factor. This AD results from reports of cracks originating from the inner faces o…
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Jul 23, 2008
Airworthiness Directives; General Electric Company (GE) CT58 Series Turboshaft Engines
The FAA proposes to adopt a new airworthiness directive (AD) for certain GE CT58 series turboshaft engines. This proposed AD would require recalculating the lives of certain part numbered compressor spools using a new repetitive heavy lift (RHL) multiplying factor. This proposed AD results from reports of cracks origi…
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May 8, 2008
Airworthiness Directives; Sikorsky Aircraft Corporation Model S-61A, S-61D, S-61E, and S-61V Helicopters
This amendment adopts a new airworthiness directive (AD) for the specified Sikorsky Aircraft Corporation (Sikorsky) model helicopters that requires installing an electric chip detector on each engine and an on-board chip detector annunciation system. The AD also requires revising the Rotorcraft Flight Manual (RFM) to…
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Apr 22, 2008
Airworthiness Directives; Sikorsky Aircraft Corporation Model S-61A, D, E, L, N, NM, R, and V; Croman Corporation Model SH-3H, Carson Helicopters, Inc. Model S-61L; Glacier Helicopter Model CH-3E; Robinson AirCrane, Inc. Model CH-3E, CH-3C, HH-3C and HH-3E; and Siller Helicopters Model CH-3E and SH-3A Helicopters
This amendment proposes superseding an existing airworthiness directive (AD) for Sikorsky Aircraft Corporation (Sikorsky) Model S- 61A, D, E, L, N, NM, R, and V helicopters. The existing AD currently requires determining whether the main rotor shaft (MRS) was used in repetitive external lift (REL) operations. The exis…
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Dec 6, 2007
Airworthiness Directives; Sikorsky Aircraft Corporation Model S-61A, S-61D, S-61E, and S-61V Helicopters
This document proposes adopting a new airworthiness directive (AD) for the specified Sikorsky Aircraft Corporation (Sikorsky) model helicopters. The AD would require installing an electric chip detector on each engine and an on-board chip detector annunciation system. The AD would also require revising the Rotorcraft…
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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…
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Jun 15, 2001
Airworthiness Directives; General Electric Company CT58 Series and Former Military T58 Series Turboshaft Engines
This amendment adopts a new airworthiness directive (AD) that is applicable to certain General Electric Company (GE) CT58 series and former military T58 series turboshaft engines. This action requires the removal from service of certain fuel flow divider assemblies, and replacement with serviceable parts. This amendme…
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Apr 12, 2001
Airworthiness Directives; Sikorsky Aircraft Corporation Model S-61A, D, E, L, N, NM, R, and V Helicopters
This document proposes superseding an existing airworthiness directive (AD) for Sikorsky Aircraft Corporation (Sikorsky) Model S- 61A, D, E, L, N, NM, R, and V helicopters. That AD currently requires a nondestructive inspection (NDI) for a crack in the main rotor shaft (shaft) and replacing any cracked shaft. This act…
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Dec 16, 1998
Airworthiness Directives; Sikorsky Aircraft Corporation Model S- 61A, D, E, L, N, NM, R, and V Helicopters
This amendment adopts a new airworthiness directive (AD), applicable to Sikorsky Aircraft Corporation Model S-61A, D, E, L, N, NM, R, and V helicopters, that requires a nondestructive inspection (NDI) for cracks in the main rotor shaft (shaft), and requires removal of any shaft with a crack and replacement with an air…
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Aug 25, 1998
Airworthiness Directives; Sikorsky Aircraft Corporation Model S- 61A, D, E, L, N, NM, R, and V Helicopters; Correction
This document corrects the amendment number in airworthiness directive (AD) 97-19-06 that was incorrectly published in the Federal Register on September 19, 1997 (62 FR 49132). This AD is applicable to Sikorsky Aircraft Corporation Model S-61A, D, E, L, N, NM, R, and V helicopters and requires, before further flight,…
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Sep 19, 1997
Airworthiness Directives; Sikorsky Aircraft Corporation Model S- 61A, D, E, L, N, NM, R, and V Helicopters
This amendment supersedes an existing priority letter airworthiness directive (AD), applicable to Sikorsky Aircraft Corporation Model S-61A, D, E, L, N, NM, R, and V helicopters, that currently requires inspecting certain main rotor blade assemblies (blades) to determine if a blade has a blade trailing edge pocket ass…
04 / Type Certificate Data Sheets
FAA TCDS for SIKORSKY S-61A
The TCDS is the legal certification document — weight limits, performance, equipment, AD compliance times, operating limitations. 1 match in the FAA catalog.
- H2EA Historical Rev 4 · 12/07/2012
Sikorsky Aircraft Corporation
Models: S-61A, S-61E, S-61D, S-61V
06 / Supplemental Type Certificates
Modifications approved for SIKORSKY S-61A
87 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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02/06/2025
STC SR01858SE
Manufacture of the Isolair, Inc., Eliminator II Model 4600-S61 Fire Fighting System
Isolair Inc.
-
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
-
04/14/2023
STC SH3319NM
Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,
Precise Flight Inc
-
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
-
09/01/2021
STC SR01552SE
Fabrication and installation of an external aerial liquid dispensing tank
Carson Helicopters Inc
-
11/03/2020
STC SR04483CH
Installation of NASI NREM18M Air Conditioning Module
National Aircraft Service Inc. (NASI)
-
06/24/2020
STC SR02692SE
Installation of T58-GE-402 engines
Croman Corporation
-
06/05/2020
STC SR01051DE
Installation of Croman Corporation Electric Heater
Croman Corporation
-
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
-
02/12/2020
STC SR01552SE
Fabrication and installation of an external aerial liquid dispensing tank
Carson Helicopters Inc
-
01/22/2020
STC SH5654NM
Installation of Croman 10,000 lbs. cargo sling system and associated fuselage mounting hardpoints
Croman Corporation
-
11/08/2019
STC SR04401NY
Increase of Out of Ground Effect (OGE) Hover Performance
Carson Helicopters Inc
-
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
-
08/07/2018
STC SR02671LA
Installation of a shorter composite blade
Carson Helicopters, Inc
-
06/18/2018
STC SR02601SE
Fabrication and installation of an internal fire retardant tank
Croman Corporation
-
09/25/2017
STC SR02507NY
Installation of a 600 pound capacity Goodrich AC rescue hoist system P/N 44311-10-2
Carson Helicopters, Inc
-
05/03/2017
STC SR02077SE
Installation of the Observer Seat CRCS100-01
Croman Corporation
-
12/29/2016
STC SH3319NM
Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,
Precise Flight Inc
-
04/05/2016
STC SR01427SE
Installation of S-61L fixed main landing gear
Croman Corporation
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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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11/05/2014
STC SH5654NM
Installation of Croman 10,000 lbs. cargo sling system and associated fuselage mounting hardpoints
Croman Corporation
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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
-
03/19/2014
STC SR03310CH
Installation of NASI Air Conditioning Module
National Aircraft Service Inc
-
09/10/2013
STC SR01426SE
Fabrication and installation of components for a left seat pilot-in-command operation.
Croman Corporation
-
08/19/2013
STC SR01552SE
Fabrication and installation of an external aerial liquid dispensing tank
Carson Helicopters, Inc
-
07/25/2013
STC SH3319NM
Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,
Precise Flight Inc
-
06/07/2013
STC SR00319SE
Modification of Part Number S6137-23009-6 main transmission rear cover per
Croman Corporation
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03/26/2013
STC SR02267SE
Fabrication of replacement transmission fittings
Croman Corporation
-
03/20/2013
STC SR01858SE
Manufacture of the Isolair, Inc., Eliminator II Model 4600-S61 Fire Fighting System
Isolair Inc.
+ 57 more STCs on file
07 / PMA replacement parts
FAA-approved replacement parts for SIKORSKY S-61A
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.
-
R6135-20168-1#https://drs.faa.gov/browse/excelExternalWindow/3F31C0D8950026C4862582F8004A5CDF.0001##
CAM
Rotair Industries Inc replaces S6135-20168-1
PMA holder → -
CS61-105-107-1#https://drs.faa.gov/browse/excelExternalWindow/30923783E0FAD8FA86257D810052BD4E.0001##
Search light Installation
Carson Helicopters, Inc. replaces Modification Part
PMA holder → -
CS61-105-200-1#https://drs.faa.gov/browse/excelExternalWindow/9D3B58E87226E8DE86257D810052BD51.0001##
Mount assembly
Carson Helicopters, Inc. replaces Modification Part
PMA holder → -
CS61-105-200-3#https://drs.faa.gov/browse/excelExternalWindow/FE793D5F4EDB498286257D810052BD50.0001##
Mount assembly
Carson Helicopters, Inc. replaces Modification Part
PMA holder → -
CS61-105-100-5#https://drs.faa.gov/browse/excelExternalWindow/A0F928CB42EA70BF86257D810052BCAA.0001##
Hoist Installation
Carson Helicopters, Inc. replaces Modification Part
PMA holder → -
CS61-105-305#https://drs.faa.gov/browse/excelExternalWindow/EC8F0F96788FD54986257D810052BD59.0001##
Rescue Hoist P9 Harness
Carson Helicopters, Inc. replaces Modification Part
PMA holder → -
CS61-105-300-1#https://drs.faa.gov/browse/excelExternalWindow/F84602745FFD7E1E86257D810052BD56.0001##
Wire Install Rescue Hoist
Carson Helicopters, Inc. replaces Modification Part
PMA holder → -
CS61-105-103-1#https://drs.faa.gov/browse/excelExternalWindow/B834FF8D055D33DA86257D810052BD46.0001##
Safety Tube Installation
Carson Helicopters, Inc. replaces Modification Part
PMA holder → -
CS61-105-100-3#https://drs.faa.gov/browse/excelExternalWindow/91BFBA220CF097C086257D810052BD0B.0001##
Hoist Installation
Carson Helicopters, Inc. replaces Modification Part
PMA holder → -
CS61-105-300-3#https://drs.faa.gov/browse/excelExternalWindow/D895E8060D9CEC4586257D810052BD55.0001##
Wire Install Rescue Hoist
Carson Helicopters, Inc. replaces Modification Part
PMA holder → -
CS61-105-107-13#https://drs.faa.gov/browse/excelExternalWindow/DE06E261FF5277FE86257D810052BD49.0001##
Search light Installation
Carson Helicopters, Inc. replaces Modification Part
PMA holder → -
CS61-105-303#https://drs.faa.gov/browse/excelExternalWindow/A40261F9D0680C4286257D810052BD57.0001##
AC Rescue Hoist Wire Harness
Carson Helicopters, Inc. replaces Modification Part
PMA holder → -
CS61-105-209-1#https://drs.faa.gov/browse/excelExternalWindow/277303575F76E21A86257D810052BD54.0001##
Cable Guard Assembly
Carson Helicopters, Inc. replaces Modification Part
PMA holder → -
CS61-105-203#https://drs.faa.gov/browse/excelExternalWindow/61273224EB12C06886257D810052BD52.0001##
Safety Tube
Carson Helicopters, Inc. replaces Modification Part
PMA holder → -
CS61-105-105-1#https://drs.faa.gov/browse/excelExternalWindow/F4378CDD010E2AC886257D810052BD48.0001##
Cable Guard Installation
Carson Helicopters, Inc. replaces Modification Part
PMA holder → -
CS61-105-107-5#https://drs.faa.gov/browse/excelExternalWindow/8C6481D262798C8886257D810052BD4A.0001##
Search light Installation
Carson Helicopters, Inc. replaces Modification Part
PMA holder → -
CS61-105-307#https://drs.faa.gov/browse/excelExternalWindow/67E61B03A5910A6986257D810052BD5A.0001##
Rescue Hoist P10 Harness
Carson Helicopters, Inc. replaces Modification Part
PMA holder → -
CS61-105-100-1#https://drs.faa.gov/browse/excelExternalWindow/68935D6FC7AB9E1086257D810052BD3D.0001##
Hoist Installation
Carson Helicopters, Inc. replaces Modification Part
PMA holder → -
CS61-105-207-1#https://drs.faa.gov/browse/excelExternalWindow/BB32D299F6EB374086257D810052BD53.0001##
Carabiner
Carson Helicopters, Inc. replaces Modification Part
PMA holder → -
CS61-105-109-1#https://drs.faa.gov/browse/excelExternalWindow/22007E7120E4678286257D810052BD4F.0001##
Placard Installation
Carson Helicopters, Inc. replaces Modification Part
PMA holder → -
CS61-105-107-3#https://drs.faa.gov/browse/excelExternalWindow/8EB7C0182C3C27E586257D810052BD4C.0001##
Search light Installation
Carson Helicopters, Inc. replaces Modification Part
PMA holder → -
R6135-20685-2#https://drs.faa.gov/browse/excelExternalWindow/0802B6748AF8C6B586258283006C54C2.0001##
SHAFT
Rotair Industries Inc replaces R6135-20685-2
PMA holder → -
R6170-50103#https://drs.faa.gov/browse/excelExternalWindow/9003D9082C1F6E01862582520072544D.0001##
PROTECTOR ASSY
Rotair Industries Inc replaces R6170-50103
PMA holder → -
R6170-50103#https://drs.faa.gov/browse/excelExternalWindow/3F78CA53586FAAB2862580DB006669C7.0001##
Protector ASSY
Rotair Industries Inc replaces S6170-50103
PMA holder → -
R6120-61002-9#https://drs.faa.gov/browse/excelExternalWindow/944EBF9AF342CD4886257E1B005E52F4.0001##
FITTING ASSEMBLY
Rotair Industries Inc replaces S6120-61002-9
PMA holder → -
R6165-20227-0#https://drs.faa.gov/browse/excelExternalWindow/D0F0BE998C3248C986257E1B005E4C2D.0001##
DECAL
Rotair Industries Inc replaces S6165-20227-0
PMA holder → -
R6120-61002-8#https://drs.faa.gov/browse/excelExternalWindow/830B1EBFC12A6C2B86257E1B005E529B.0001##
FITTING
Rotair Industries Inc replaces S6120-61002-8
PMA holder → -
R6120-60908-4#https://drs.faa.gov/browse/excelExternalWindow/0C0AB073AB804E6686257E1B005E47DA.0001##
ROD END
Rotair Industries Inc replaces S6120-60908-4
PMA holder → -
R6130-80079#https://drs.faa.gov/browse/excelExternalWindow/F22CF9B440D25F5F86257DDB0067D674.0001##
SUPPORT
Rotair Industries Inc replaces S6130-80079
PMA holder → -
R6135-20407-212#https://drs.faa.gov/browse/excelExternalWindow/DC74E8C153D37BB58625825200725452.0001##
TUBE
Rotair Industries Inc replaces R6135-20407-212
PMA holder → -
R6135-20407-215#https://drs.faa.gov/browse/excelExternalWindow/8015C446650609738625825200725454.0001##
TUBE
Rotair Industries Inc replaces R6135-20407-215
PMA holder → -
R6140-62118-5#https://drs.faa.gov/browse/excelExternalWindow/DD33A024F31C90B486257E1B005E4A71.0001##
TORQUE SHAFT
Rotair Industries Inc replaces S6140-62118-5
PMA holder → -
RB2106-103#https://drs.faa.gov/browse/excelExternalWindow/05D938C88EF251DC86257E1B005E4D85.0001##
BEARING
Rotair Industries Inc replaces SB2106-103
PMA holder → -
RS4059-25-524#https://drs.faa.gov/browse/excelExternalWindow/7468CF6FDACE310286257E1B005E4E65.0001##
SPACER
Rotair Industries Inc replaces SS4059-25-524
PMA holder → -
R6140-62130-0#https://drs.faa.gov/browse/excelExternalWindow/3A816F62E6AB594E86257E1B005E4AC5.0001##
SPACER
Rotair Industries Inc replaces S6140-62130-0
PMA holder → -
R6140-62130-1#https://drs.faa.gov/browse/excelExternalWindow/541C3C54E8A1364086257E1B005E4B1F.0001##
TUBE
Rotair Industries Inc replaces S6140-62130-1
PMA holder → -
R6140-62130-2#https://drs.faa.gov/browse/excelExternalWindow/9DCC6794619DECC186257E1B005E4B74.0001##
WASHER
Rotair Industries Inc replaces S6140-62130-2
PMA holder → -
R6140-62118-4#https://drs.faa.gov/browse/excelExternalWindow/EEB1B2DDD0DDE4EE86257E1B005E4A18.0001##
TORQUE SHAFT
Rotair Industries Inc replaces S6140-62118-4
PMA holder → -
R6125-50309-1#https://drs.faa.gov/browse/excelExternalWindow/10DD96EF4EEC7F3D862580DB006669CE.0001##
PLATE
Rotair Industries Inc replaces S6125-50309-1
PMA holder → -
R6125-50309-6#https://drs.faa.gov/browse/excelExternalWindow/049D91BC462C9E0F862580DB006669D4.0001##
PLATE
Rotair Industries Inc replaces S6125-50309-6
PMA holder →
+ 20 more PMA parts on file
04 / Regulations watching this type
Advisory Circulars and Federal Register activity for SIKORSKY S-61A
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 5 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 →