Type Record · As of May 3, 2026
WACO YKC
Fixed Wing Single Engine · JACOBS L4 /R755-7
Registered
10
Year Range
1934–1934
NTSB Events
4
Airworthiness Directives
0
01 / Distribution
Where the fleet lives and was built
Counts of currently-registered WACO YKC aircraft by US state and decade of manufacture, sourced from the FAA Aircraft Registry.
By State (top 10)
- OH 20.0% 2
- WA 20.0% 2
- CA 10.0% 1
- MO 10.0% 1
- NV 10.0% 1
- SC 10.0% 1
- CO 10.0% 1
- FL 10.0% 1
By Decade of Manufacture
- 1930s 90.0% 9
- Unknown 10.0% 1
02 / NTSB Records
Events involving WACO YKC aircraft
4 event(s) on file. Showing the most recent 4.
-
Jun 30, 2024
N14137Selden, Kansas Fatal
NTSB Docket → -
Jul 14, 2020
N14139New Carlisle, Ohio
NTSB Docket → -
Jan 13, 1985
N14000PLACERVILLE, California Minor
NTSB Docket → -
Oct 18, 1969
N72392SENECA, Pennsylvania Fatal
NTSB Docket →
03 / Airworthiness Directives
FAA directives applicable to WACO YKC
No matching airworthiness directives are on file for this make and model in the Federal Register.
04 / Type Certificate Data Sheets
FAA TCDS for WACO YKC
The TCDS is the legal certification document — weight limits, performance, equipment, AD compliance times, operating limitations. 1 match in the FAA catalog.
- A-533 Current Rev 0 · 01/03/1949
The Waco Aircraft Company
Models: YKS-6, YKC, YKC-S, ZKS-6
06 / Supplemental Type Certificates
Modifications approved for WACO YKC
39 STCs on file — every FAA-approved modification, alteration, or installation for this aircraft. STOL kits, avionics, fuel systems, floats, engine swaps, you name it.
-
08/21/2024
STC SA01757WI
To allow the use of UL91 or UL94 (minimum) grade aviation fuel
Swift Fuels LLC
-
09/01/2022
STC SA01967WI (3 OF3)
Use of GAMI G100UL High Octane Unleaded Avgas
General Aviation Modifications Inc.
-
07/27/2022
STC SA01757WI
To allow the use of UL91 or UL94 (minimum) grade aviation fuel
Swift Fuels LLC
-
05/19/2022
STC SA04776NY (1 OF 2)
The HIPEC Covering and Finishing System must be performed and maintained
HIPEC Aircraft Coatings Inc.
-
03/12/2021
STC SE02712SE
Installation of the Oil Scavenging Pump System for Jacobs L-4 and R-755
Henry F. Rogers
-
07/27/2020
STC SA01831WI
To allow the use of UL91 (minimum) grade aviation fuel
Petersen Aviation Inc
-
06/04/2020
STC SA02268CH (PAGE 5)
Installation of Airwolf Filter Corp. Air Oil Separator
Airwolf Filter Corporation
-
02/11/2019
STC SA01831WI
To allow the use of UL91 (minimum) grade aviation fuel
ADI LLC
-
12/20/2017
STC SA02268CH (PAGE 5)
Installation of Airwolf Filter Corp. Air Oil Separator
Airwolf Filter Corporation
-
12/20/2017
STC SA01406NY
Installation of Airwolf remote mounted engine oil filter kit AFC-K017 on single and multi-engine fixed light aircraft and\nrotary wing
Airwolf Filter Corporation
-
09/20/2017
STC SA2586NM
Installation of J.P. Instruments temperature monitoring systems.
J P Instruments
-
03/09/2017
STC SA02428SE (Page 2)
Installation of an Air Stream Switch for an electric time recording device on non-pressurized aircraft
Henry F Rogers/David E Polley
-
01/24/2017
STC SA01831WI
To allow the use of UL91 (minimum) grade aviation fuel
Petersen Aviation Inc
-
05/20/2016
STC SA01757WI
To allow the use of UL91 or UL94 (minimum) grade aviation fuel
Swift Fuels LLC
-
03/09/2016
STC SA01757WI
To allow the use of UL91 or UL94 (minimum) grade aviation fuel
Petersen Aviation Inc
-
10/28/2015
STC SA01757WI
To allow the use of UL91 (minimum) grade aviation fuel
Petersen Aviation Inc
-
06/04/2015
STC SA00478CH
Installation of Cooper Superflite 102 Fabric.
Aviation Products Systems Inc.
-
04/12/2013
STC SA00861SE
Installation of J.P. Instruments (JPI) fuel flow indicating system
J P Instruments
-
04/12/2013
STC SA00432SE (PG 4)
Installation of EGT 701 series fuel flow instrument.
J P Instruments
-
03/26/2013
STC SA00432SE (PG 3)
Installation of EGT 701 series fuel flow instrument.
J P Instruments
-
03/26/2013
STC SA00861SE (PG 3)
Installation of J.P. Instruments (JPI) fuel flow indicating system
J P Instruments
-
10/31/2012
STC SA01406NY
Installation of Airwolf remote mounted engine oil filter kit AFC-K017 on single and multi-engine fixed light aircraft and\nrotary wing
Airwolf Filter Corporation
-
05/10/2012
STC SA00478CH
Installation of Cooper Superflite 102 Fabric.
Aviation Products Systems Inc.
-
10/19/2011
STC SA00478CH (PAGE 3)
Installation of Cooper Superflite 102 Fabric.
Aviation Products Systems 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
-
09/18/2009
STC SA00478CH (PAGE 3)
Installation of Cooper Superflite 102 Fabric.
Aviation Products Systems Inc.
-
06/26/2009
STC SA01734SE (PG 4)
Application of Stewart Systems synthetic fabric covering system to aircraft fuselage, wings, tail surfaces, control surfaces and related parts.
Stewart Thomas D. and Stewart Dan R.
-
05/15/2009
STC SA00478CH (PAGE 3)
Installation of Cooper Superflite 102 Fabric.
Aviation Products Systems Inc.
-
02/01/2009
STC SA00478CH (PAGE 3)
Installation of Cooper Superflite 102 Fabric.
Aviation Products Systems Inc.
+ 9 more STCs on file
04 / Regulations watching this type
Advisory Circulars and Federal Register activity for WACO YKC
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 10 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 |
|---|---|---|---|---|
| N14000 | CA | 1934 | ● | Look up ↗ |
| N14014 | MO | 1934 | · | Look up ↗ |
| N14027 | OH | 1934 | · | Look up ↗ |
| N14047 | NV | 1934 | · | Look up ↗ |
| N14071 | SC | 1934 | · | Look up ↗ |
| N14073 | WA | 1934 | · | Look up ↗ |
| N14087 | WA | 1934 | · | Look up ↗ |
| N14137 | CO | 1934 | ● | Look up ↗ |
| N14139 | OH | 1934 | ● | Look up ↗ |
| N72392 | FL | — | ● | 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 →