Type Record · As of May 3, 2026
WACO UBF
Fixed Wing Single Engine · CONT MOTOR R670-SERIES
Registered
13
Year Range
1932–1933
NTSB Events
4
Airworthiness Directives
0
Aircraft Resources
01 / Distribution
Where the fleet lives and was built
Counts of currently-registered WACO UBF aircraft by US state and decade of manufacture, sourced from the FAA Aircraft Registry.
By State (top 10)
- OR 15.4% 2
- TX 15.4% 2
- TN 7.7% 1
- DE 7.7% 1
- FL 7.7% 1
- NY 7.7% 1
- MN 7.7% 1
- ME 7.7% 1
- OK 7.7% 1
- MA 7.7% 1
+1 more states
By Decade of Manufacture
- 1930s 92.3% 12
- Unknown 7.7% 1
02 / NTSB Records
Events involving WACO UBF aircraft
4 event(s) on file. Showing the most recent 4.
-
Jul 31, 2025
N1244GTampa, Florida
NTSB Docket → -
Aug 11, 1991
N13075LINCOLN CITY, Oregon
NTSB Docket → -
May 23, 1982
N2091KCHANDLER, Arizona Minor
NTSB Docket → -
Jul 26, 1964
N12002PITTSBURG, California Fatal
NTSB Docket →
02c / Academic Research
Scholarly work mentioning WACO UBF
Papers and reports across NASA, NTSB, FAA CAMI, AOPA ASI, Embry-Riddle, arXiv, and the broader academic graph that mention this airframe. Title or keyword match — drill into each for full abstract + author list + PDF link.
- arXiv 2024 · arXiv preprint
Freezing delay of a drop impacting on a monolayer of cold grains
We investigate a subfreezing droplet impact scenario in a low-humidity environment, where the target is a cold granular monolayer.
- Embry-Riddle Scholarly Commons 2023 · Conference paper
Validation of Training Satisfaction Survey
The Training Satisfaction Survey (TSS) was developed as part of a larger project to examine the features of Virtual Reality software and supporting devices as a training program on visual illusions an…
Browse the full corpus — academia portal ↗
03 / Airworthiness Directives
FAA directives applicable to WACO UBF
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 UBF
The TCDS is the legal certification document — weight limits, performance, equipment, AD compliance times, operating limitations. 1 match in the FAA catalog.
- ATC 473 Current Rev 0 ·
The Waco Aircraft Company
Models: UBF
06 / Supplemental Type Certificates
Modifications approved for WACO UBF
21 STCs on file — every FAA-approved modification, alteration, or installation for this aircraft. STOL kits, avionics, fuel systems, floats, engine swaps, you name it.
-
05/17/2024
STC SA4503NM (PAGE 2)
Remove original cloth covering and install Ceconite covering
Ceconite Division of Poly-Fiber Inc.
-
09/09/2022
STC SA1008WE
Installation of Poly-Fiber covering material.
Poly-Fiber Inc
-
05/19/2022
STC SA04776NY (1 OF 2)
The HIPEC Covering and Finishing System must be performed and maintained
HIPEC Aircraft Coatings Inc.
-
02/25/2011
STC SA4503NM (PAGE 2)
Install Ceconite covering material.
Ceconite Division of Poly-Fiber Inc
-
12/09/2009
STC SA2693NM (PAGE 2)
Installation of Electronics International digital volt/amp gauges and accessories.
Electronics International 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.
-
07/24/2008
STC SA02033AT (PAGE 5)
Modification to install an air-oil separator to prevent oil from being aspirated from the engine breather line (47J series w stc's SH4-235SW, SH4-826SW or SH479SW)
M-20 Oil Separators LLC
-
01/24/2005
STC SA2693NM
Installation of Electronics International digital volt/amp gauges and accessories.
Electronics International Inc.
-
11/09/2003
STC SA8075SW (PAGE 3)
Installation of fiberglass covering. (M-62 SERIES PT-19) (G-73 SCHWEIZER)
Razorback Fabrics Inc
-
05/27/2003
STC SA1008WE
Installation of Poly-Fiber covering material.
Poly-Fiber Inc.
-
05/27/2003
STC SA1008WE
Installation of Poly-Fiber covering material.
Poly-Fiber Inc
-
10/24/2000
STC SA2687NM (PAGE 2)
Installation of Truboplus/ Electronics Int'l gauges and switches.
Aero Manufacturing Inc.
-
03/31/1997
STC SA8075SW (PAGE 1)
Installation of fiberglass covering. (M-62 SERIES PT-19) (G-73 SCHWEIZER)
Razorback Fabrics Inc
-
10/06/1992
STC SA1008WE
Installation of Poly-Fiber covering material.
Poly-Fiber, Inc
-
02/24/1992
STC SA2687NM
Installation of Truboplus/ Electronics Int'l gauges and switches.
ACD Corporation
-
06/06/1990
STC SA2350NM Page 2
Installation of Electronics International Inc digital carburetor/outside air temperature gauges
Electronics International
-
01/26/1988
STC SA2693NM
Installation of Electronics International digital volt/amp gauges and accessories.
Electronics International
-
05/26/1987
STC SA2350NM (PAGE 2)
Installation of Electronics International Inc Digital carburetor/outside air temperature gauges listed on the attached continutation sheet and the associated accessories
Electronics International
-
02/16/1984
STC SA2190NM Page 2
Installation of electronics International Digital Volt/Amp Gauges and Accessories.
Electronics International
-
01/01/1960
STC SA628WE
Ceconite 101 covering of entire airframe.
Cooper Engineering Corporation
-
—
STC SA628WE
Ceconite 101 covering of entire airframe.
Cooper Engineering Corporation
04 / Regulations watching this type
Advisory Circulars and Federal Register activity for WACO UBF
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 13 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 |
|---|---|---|---|---|
| N12002 | TN | — | ● | Look up ↗ |
| N12443 | DE | 1932 | · | Look up ↗ |
| N1244G | FL | 1932 | ● | Look up ↗ |
| N13027 | OR | 1932 | · | Look up ↗ |
| N13071 | NY | 1933 | · | Look up ↗ |
| N13074 | MN | 1933 | · | Look up ↗ |
| N13075 | OR | 1933 | ● | Look up ↗ |
| N13419 | TX | 1933 | · | Look up ↗ |
| N13442 | ME | 1932 | · | Look up ↗ |
| N13444 | OK | 1933 | · | Look up ↗ |
| N13446 | MA | 1933 | · | Look up ↗ |
| N155Y | TX | 1932 | · | Look up ↗ |
| N2091K | MO | 1932 | ● | 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 →