Type Record · As of May 3, 2026
SIKORSKY S-39-C
Fixed Wing Single Engine · P&W R-985 SERIES
Registered
3
Year Range
1931–1931
NTSB Events
0
Airworthiness Directives
0
Aircraft Resources
01 / Distribution
Where the fleet lives and was built
Counts of currently-registered SIKORSKY S-39-C aircraft by US state and decade of manufacture, sourced from the FAA Aircraft Registry.
By State (top 10)
- FL 33.3% 1
- CA 33.3% 1
- WY 33.3% 1
By Decade of Manufacture
- 1930s 33.3% 1
- Unknown 66.7% 2
02 / NTSB Records
Events involving SIKORSKY S-39-C aircraft
No NTSB-recorded events match SIKORSKY S-39-C in the indexed corpus.
03 / Airworthiness Directives
FAA directives applicable to SIKORSKY S-39-C
No matching airworthiness directives are on file for this make and model in the Federal Register.
04 / Type Certificate Data Sheets
FAA TCDS for SIKORSKY S-39-C
The TCDS is the legal certification document — weight limits, performance, equipment, AD compliance times, operating limitations. 2 matches in the FAA catalog.
- ATC 375 Current Rev 0 ·
Sikorsky Aircraft Corporation
Models: S-39-B
- TC 2-391 Current Rev 0 ·
Sikorsky Aircraft Corporation
Models: S-39-C
06 / Supplemental Type Certificates
Modifications approved for SIKORSKY S-39-C
19 STCs on file — every FAA-approved modification, alteration, or installation for this aircraft. STOL kits, avionics, fuel systems, floats, engine swaps, you name it.
-
06/04/2020
STC SA02268CH (PAGE 5)
Installation of Airwolf Filter Corp. Air Oil Separator
Airwolf Filter Corporation
-
12/20/2017
STC SA02268CH (PAGE 5)
Installation of Airwolf Filter Corp. Air Oil Separator
Airwolf Filter Corporation
-
12/20/2017
STC SA01282NY
Installation of Airwolf remote mounted engine oil filter kit AFC-K015 on aircraft powered by Pratt & Whitney radial reciprocating engine Series R-985, R-1340 and R-1830.
Airwolf Filter Corporation
-
06/04/2015
STC SA00478CH
Installation of Cooper Superflite 102 Fabric.
Aviation Products Systems Inc.
-
10/31/2012
STC SA01282NY
Installation of Airwolf remote mounted engine oil filter kit AFC-K015 on aircraft powered by Pratt & Whitney radial reciprocating engine Series R-985, R-1340 and R-1830.
Airwolf Filter Corporation
-
05/10/2012
STC SA00478CH
Installation of Cooper Superflite 102 Fabric.
Aviation Products Systems Inc.
-
02/21/2012
STC SH3319NM
Installation of Precise Pulselite Control System
Precise Flight Inc
-
09/14/2011
STC SA00478CH (PAGE 3)
Installation of Cooper Superflite 102 Fabric.
Aviation Products Systems Inc.
-
08/28/2011
STC SA02268CH (PAGE 5)
Installation of Airwolf Filter Corp. Air Oil Separator
Airwolf Filter Corporation
-
12/09/2009
STC SA2693NM (PAGE 2)
Installation of Electronics International digital volt/amp gauges and accessories.
Electronics International Inc.
-
02/01/2009
STC SA00478CH (PAGE 3)
Installation of Cooper Superflite 102 Fabric.
Aviation Products Systems Inc.
-
05/23/2008
STC SA00478CH (PAGE 1)
Installation of Cooper Superflite 102 Fabric.
Aviation Products Systems Inc.
-
05/15/2007
STC SA00478CH (PAGE 1)
Installation of Cooper Superflite 102 Fabric.
Aviation Products Systems Inc.
-
01/24/2005
STC SA2693NM
Installation of Electronics International digital volt/amp gauges and accessories.
Electronics International Inc.
-
11/07/2003
STC SH3319NM
Installation of Precise Pulselite Control Unit in the Landing/Taxi/Recognition Visual Control Light System.
Precise Flight Inc
-
12/03/2001
STC SH3319NM
Installation of Precise Pulselite Control Unit in the Landing/Taxi/Recognition Visual Control Light System.
Precise Flight Inc
-
03/09/1993
STC SA1626NM Page 2
Installation of Electronics Int'l Digital EGT/CHT Instruments and accessories. (201 Series)
Electronics International
-
10/13/1989
STC SA4302NM (PAGE 2)
Installation of Electronics Int'l digital automatic engine analyzer.
Electronics International
-
01/26/1988
STC SA2693NM
Installation of Electronics International digital volt/amp gauges and accessories.
Electronics International
07 / PMA replacement parts
FAA-approved replacement parts for SIKORSKY S-39-C
1 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.
-
MDL TD 031851#https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID126524348320250508133547.0001##
VA-1A( )AndAccessories
Electronics International Inc replaces Modification Part
PMA holder →
04 / Regulations watching this type
Advisory Circulars and Federal Register activity for SIKORSKY S-39-C
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 3 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 →