Type Record · As of May 3, 2026
WACO ASO
Fixed Wing Single Engine · WRIGHT WWJ SERIES
Registered
33
Year Range
1927–1931
NTSB Events
13
Airworthiness Directives
0
01 / Distribution
Where the fleet lives and was built
Counts of currently-registered WACO ASO aircraft by US state and decade of manufacture, sourced from the FAA Aircraft Registry.
By State (top 10)
- CA 15.2% 5
- AZ 15.2% 5
- OH 12.1% 4
- IL 9.1% 3
- FL 6.1% 2
- NY 6.1% 2
- TX 6.1% 2
- OK 6.1% 2
- MO 6.1% 2
- KY 3.0% 1
+5 more states
By Decade of Manufacture
- 1920s 45.5% 15
- 1930s 6.1% 2
- Unknown 48.5% 16
02 / NTSB Records
Events involving WACO ASO aircraft
13 event(s) on file. Showing the most recent 13.
-
Apr 9, 2004
N11253Lexington, Kentucky
NTSB Docket → -
Jun 9, 1991
N4WMONTAGUE, California
NTSB Docket → -
Aug 12, 1988
N763EMIDDLETOWN, Ohio
NTSB Docket → -
Jan 4, 1983
N6940CAMARILLO, California Fatal
NTSB Docket → -
Apr 25, 1980
N8369LAKE ARTHUR, Louisiana
NTSB Docket → -
Oct 29, 1978
N11253MT STERLING, Kentucky
NTSB Docket → -
Aug 14, 1978
N8369CHARLESTON, Mississippi
NTSB Docket → -
Jun 29, 1975
N268MBELLE VERNON, Pennsylvania
NTSB Docket → -
Jun 29, 1969
N763EDAYTON, Ohio
NTSB Docket → -
Nov 7, 1968
N699KCOLO.SPRGS, Colorado Fatal
NTSB Docket → -
Jul 26, 1967
N9500TIMMONSVILLE, South Carolina
NTSB Docket → -
Sep 2, 1966
N9500TIMMONSVILLE, South Carolina
NTSB Docket → -
Jul 13, 1964
N268MDELTA BRIDGE, Louisiana
NTSB Docket →
02c / Academic Research
Scholarly work mentioning WACO ASO
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 2026 · arXiv preprint
Right in Time: Reactive Reasoning in Regulated Traffic Spaces
Exact inference in probabilistic First-Order Logic offers a promising yet computationally costly approach for regulating the behavior of autonomous agents in shared traffic spaces.
- Embry-Riddle Scholarly Commons 2025 · Journal article (IJAAA)
The Reasons for the Silence of First Officers: A Qualitative Study
This study explores the reasons why first officers choose to remain silent in the cockpit or refrain from reporting errors after a flight.
- Semantic Scholar 2024 · Article (BMC Medical Education)
Augmented reality visualization for ultrasound-guided interventions: a pilot randomized crossover trial to assess trainee performance and cognitive load
Augmented reality (AR) technology involving head-mounted displays (HMD) represents a significant innovation in medical education, particularly for training in guided invasive procedures.
- arXiv 2024 · arXiv preprint
Automatic Control With Human-Like Reasoning: Exploring Language Model Embodied Air Traffic Agents
Recent developments in language models have created new opportunities in air traffic control studies. The current focus is primarily on text and language-based use cases.
- Semantic Scholar 2024 · Article (The Ultrasound Journal)
Evaluation of point-of-care ultrasound training among healthcare providers: a pilot study
The use of Point-of-Care Ultrasound (POCUS) has become prevalent across a variety of clinical settings. Many healthcare professionals have started getting hands-on training.
- arXiv 2024 · arXiv preprint
Random Graph Set and Evidence Pattern Reasoning Model
Evidence theory is widely used in decision-making and reasoning systems. In previous research, Transferable Belief Model (TBM) is a commonly used evidential decision making model, but TBM is a non-pre…
Browse the full corpus — academia portal ↗
03 / Airworthiness Directives
FAA directives applicable to WACO ASO
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 ASO
The TCDS is the legal certification document — weight limits, performance, equipment, AD compliance times, operating limitations. 1 match in the FAA catalog.
- ATC 41 Current Rev 0 ·
The Waco Aircraft Company
Models: ASO
06 / Supplemental Type Certificates
Modifications approved for WACO ASO
28 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.
-
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
-
08/27/2016
STC SA01240SE (5 OF 5)
Installation of secondary voltage indication system
Visual Instruments LLC
-
06/04/2015
STC SA00478CH
Installation of Cooper Superflite 102 Fabric.
Aviation Products Systems Inc.
-
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.
-
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
-
04/02/2006
STC SA01240SE (5 OF 5)
Installation of secondary voltage indication system
Visual Instruments LLC
-
03/29/2006
STC SA02268CH (PAGE 5)
Installation of Airwolf Filter Corp. Air Oil Separator
Airwolf Filter Corporation
-
01/24/2005
STC SA2693NM
Installation of Electronics International digital volt/amp gauges and accessories.
Electronics International Inc.
-
11/04/2004
STC SA02033AT (PAGE 2)
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
-
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.
-
03/09/1993
STC SA1626NM Page 2
Installation of Electronics Int'l Digital EGT/CHT Instruments and accessories. (201 Series)
Electronics International
-
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
-
10/12/1989
STC SA4302NM (PAGE 3)
Installation of Electronics Int'l digital automatic engine analyzer.
Electronics International
-
04/25/1988
STC SA3862NM Page 2
Installation of Electronics International Primary TIT/EGT/CHT instruments, remote switches and associated accessories.
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
04 / Regulations watching this type
Advisory Circulars and Federal Register activity for WACO ASO
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 33 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 |
|---|---|---|---|---|
| N10001 | FL | 1928 | · | Look up ↗ |
| N11253 | KY | 1931 | ● | Look up ↗ |
| N119Y | OH | 1930 | · | Look up ↗ |
| N1826 | CA | 1927 | · | Look up ↗ |
| N268M | OH | 1929 | ● | Look up ↗ |
| N4902 | IL | 1928 | · | Look up ↗ |
| N4W | WA | — | ● | Look up ↗ |
| N5020 | CA | — | · | Look up ↗ |
| N5785 | CA | 1928 | · | Look up ↗ |
| N604N | NY | 1929 | · | Look up ↗ |
| N608N | ME | 1929 | · | Look up ↗ |
| N625N | AZ | — | · | Look up ↗ |
| N662N | OH | — | · | Look up ↗ |
| N662Y | TX | — | · | Look up ↗ |
| N6940 | IL | 1929 | ● | Look up ↗ |
| N699K | AZ | — | ● | Look up ↗ |
| N701E | CA | — | · | Look up ↗ |
| N7091 | FL | 1928 | · | Look up ↗ |
| N709E | TX | — | · | Look up ↗ |
| N763E | OH | 1929 | ● | Look up ↗ |
| N766E | VA | — | · | Look up ↗ |
| N766K | OK | — | · | Look up ↗ |
| N768K | ID | 1929 | · | Look up ↗ |
| N775K | OK | — | · | Look up ↗ |
| N8369 | AZ | — | ● | Look up ↗ |
| N8540 | AZ | — | · | Look up ↗ |
| N931H | IL | 1929 | · | Look up ↗ |
| N9500 | NC | 1928 | ● | Look up ↗ |
| N9503 | MO | 1928 | · | Look up ↗ |
| N9504 | CA | — | · | Look up ↗ |
| N9534 | AZ | — | · | Look up ↗ |
| N9538 | NY | — | · | Look up ↗ |
| N9541 | MO | 1928 | · | 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 →