Type Record · As of May 3, 2026
WACO BSO
Fixed Wing Single Engine · LYCOMING R680E SERIES
Registered
14
Year Range
1929–1929
NTSB Events
1
Airworthiness Directives
0
Aircraft Resources
01 / Distribution
Where the fleet lives and was built
Counts of currently-registered WACO BSO aircraft by US state and decade of manufacture, sourced from the FAA Aircraft Registry.
By State (top 10)
- AZ 35.7% 5
- MO 7.1% 1
- NY 7.1% 1
- IL 7.1% 1
- MS 7.1% 1
- WA 7.1% 1
- OR 7.1% 1
- ND 7.1% 1
- IN 7.1% 1
- VA 7.1% 1
By Decade of Manufacture
- 1920s 50.0% 7
- Unknown 50.0% 7
02 / NTSB Records
Events involving WACO BSO aircraft
1 event(s) on file. Showing the most recent 1.
-
Dec 19, 1980
N8543SCOTTSDALE, Arizona Minor
NTSB Docket →
02c / Academic Research
Scholarly work mentioning WACO BSO
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.
- NASA NTRS 2023 · Presentation
Subsonic Single Aft Engine (SUSAN) Flight Deck Experiment: Throttle and Engine Display Concepts
NASA is developing a new hybrid-electric aircraft concept called the SUbsonic Single Aft eNgine (SUSAN) Electrofan. The SUSAN airplane is being designed as a 180-passenger commercial regional jet and …
- NASA NTRS 2019 · Contractor Report (CR)
Experimental atmospheric absorption values from aircraft flyover noise signals
Analysis of aircraft noise recordings to determine experimental values of atmospheric sound absorption
- Embry-Riddle Scholarly Commons 2019 · Journal article (IJAAA)
Aerodynamic Design and Exploration of a Blended Wing Body Aircraft at Subsonic Speed
Blended Wing Body (BWB) is a novel aircraft concept which provides many different aerodynamic benefits over conventional aircrafts design.
- Embry-Riddle Scholarly Commons 2014 · Journal article (IJAAA)
Achieving global range in future subsonic and supersonic airplanes
No commercial airplane in service today is able to fly half great-circle distances over the globe and achieve the non-stop or the global range to any antipodal location on Earth.
- Embry-Riddle Scholarly Commons 2020 · Journal article (IJAAA)
Experimental and Computational Evaluation of Five Hole Five Probe Flow Analyzer for Subsonic Wind Calibration
It is very essential to predict the flow and its related parameters to understand real life fluid flow. The real-life fluid problems are studied with wind tunnels which gives very efficient results in…
- NASA NTRS 2026 · Conference Paper
Computational Analysis of Steady State Aerodynamics of Transonic Truss-Braced Wing Configuration in Deep Stall
This study presents a computational investigation of steady state aerodynamics of the Subsonic Ultra-Green Aircraft Research (SUGAR) Transonic Truss-Braced Wing (TTBW) configuration over a wide range …
Browse the full corpus — academia portal ↗
03 / Airworthiness Directives
FAA directives applicable to WACO BSO
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 BSO
The TCDS is the legal certification document — weight limits, performance, equipment, AD compliance times, operating limitations. 1 match in the FAA catalog.
- ATC 168 Current Rev 0 ·
The Waco Aircraft Company
Models: BSO
06 / Supplemental Type Certificates
Modifications approved for WACO BSO
17 STCs on file — every FAA-approved modification, alteration, or installation for this aircraft. STOL kits, avionics, fuel systems, floats, engine swaps, you name it.
-
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
-
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
-
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
-
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.
-
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
-
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
-
10/13/1989
STC SA4302NM (PAGE 2)
Installation of Electronics Int'l digital automatic engine analyzer.
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 BSO
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 14 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 |
|---|---|---|---|---|
| N261M | MO | — | · | Look up ↗ |
| N703K | AZ | — | · | Look up ↗ |
| N704K | AZ | — | · | Look up ↗ |
| N751K | AZ | — | · | Look up ↗ |
| N752K | NY | 1929 | · | Look up ↗ |
| N765K | IL | 1929 | · | Look up ↗ |
| N786K | MS | 1929 | · | Look up ↗ |
| N796E | WA | 1929 | · | Look up ↗ |
| N8543 | OR | — | ● | Look up ↗ |
| N861M | ND | 1929 | · | Look up ↗ |
| N940H | IN | 1929 | · | Look up ↗ |
| N945H | VA | 1929 | · | Look up ↗ |
| N958H | AZ | — | · | Look up ↗ |
| N959H | AZ | — | · | 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 →