Waco CSO
5 on the U.S. register. Built from 1929 to 1930; half of them date from 1929 or earlier. Wisconsin has the most (1). 20% are registered to companies, flight schools, clubs and other organisations; the rest to individuals, who are not named here at this time.
About the CSO from the FAA's model table
- Type
- Fixed-wing, single engine · Piston singles
- Power
- Piston (reciprocating), 1 engine
- Common engines
- Wright 760E-2 (1), Wright 760A B D E&Et (1), Cont Motor W670 Series (1)
- Seats
- 3
- Cruise speed
- about 79 mph
- Built of
- steel tube, wood and fabric · A biplane of the 1920s and 1930s: steel-tube fuselage, wooden wings, fabric covering.
- Maker on the register
- Waco
- Registered
- earliest certificate November 17, 2016; newest August 13, 2023
Where they are owner's state
Who owns them registrant type
By owner type, as a table
| aircraft | share | |
|---|---|---|
| Individual | 2 | 40% |
| Not stated | 1 | 20% |
| Corporation | 1 | 20% |
| Co-owned | 1 | 20% |
Versions as the FAA records them · click one to list only those aircraft
| Version | Registered | Built | Share |
|---|---|---|---|
| CSO | 5 | 1929 to 1930 | 100.0% |
When they were built by decade · 2 with no year on file
Registration status
By status, as a table
| aircraft | share | |
|---|---|---|
| Valid | 4 | 80% |
| Pending cancellation | 1 | 20% |
Airworthiness certificate class
By airworthiness certificate, as a table
| aircraft | share | |
|---|---|---|
| Standard | 4 | 80% |
| None on file | 1 | 20% |
Biggest operators companies, schools and clubs
Largest fleets, as a table
| aircraft | |
|---|---|
| 1941 Historical Aircraft Group DBA | 1 |
Accident history NTSB records · 0 cases since 1982, 0 fatal
No NTSB accident or incident records match this family's versions. Each aircraft's own page also shows its record. How models compare: Accidents by model in Aviation Analytics.
Questions people ask answers refresh every morning
How many Waco CSO aircraft are registered in the U.S.?
5 as of October 27, 2026, counting 1 version the FAA records separately.
Which state has the most Waco CSOs?
Wisconsin, with 1.
Who owns the Waco CSO?
20% are registered to companies, flight schools, clubs and other organisations; the rest to individuals and co-owners, who are not named on this site at this time.
When were the Waco CSOs on the register built?
Between 1929 and 1930; half of them in 1929 or earlier.
What is the Waco CSO made of?
A welded steel-tube fuselage and wooden wings, all covered in fabric: the construction of the 1930s and 1940s, which makes wood rot and fabric age the inspection items. A biplane of the 1920s and 1930s: steel-tube fuselage, wooden wings, fabric covering. The FAA's type certificate data sheet is the authority for any one model.
What the FAA has certified, ordered and been told about the Waco CSO the component layer
A welded steel-tube fuselage and wooden wings, all covered in fabric: the construction of the 1930s and 1940s, which makes wood rot and fabric age the inspection items. A biplane of the 1920s and 1930s: steel-tube fuselage, wooden wings, fabric covering. The design is held under 1 type certificate (ATC 240, held by The Waco Aircraft Company). No FAA order in the current files names this model.
Approved replacement parts 3 parts manufacturer approvals
Parts a company other than the maker may make for this design and sell as FAA-approved. The companies holding the most:
Most often: va andaccessories (1), fuel quantity (1), fuel placard (1).
Certificates and bulletins
Sources: the FAA's type certificate data sheets, airworthiness directives, supplemental type certificates, special conditions and special airworthiness information bulletins (Dynamic Regulatory System), and the FAA's service difficulty reports. A failure report is what an operator or repair station chose to file; the counts show reporting as much as reliability, and larger and commercial fleets report more. How the systems are grouped.
Connections how the CSO links to the rest of the register
- Waco 657 aircraft on the register
- Waco CSO 5 registered
- Built of steel tube, wood and fabric · A biplane of the 1920s and 1930s: steel-tube fuselage, wooden wings, fabric covering.
- Wright 760E-2 1 of these aircraft · 350 hp
- Wright 760A B D E&ET 1 of these aircraft · 250 hp
- Continental W670 series 1 of these aircraft · 250 hp
- Continental R670-series 1 of these aircraft · 225 hp
- 1941 Historical Aircraft Group DBA 1 of these aircraft
- NTSB accidents and incidents involving the CSO 0 cases since 1982 · 0 fatal
The whole map of how records connect · these connections as data: /graph/model/waco/cso.json.
Aircraft newest certificates first · 5
| Tail no. | Maker and model | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|
| N618N | Waco CSO |
1941 Historical Aircraft Group DBA Geneseo, New York |
Standard | 2023-08-13 | ValidFAA registration status code V: Valid registration. All codes |
| N265M | Waco CSO |
Co-owned owner Colorado |
None on file | 2019-10-23 | ValidFAA registration status code V: Valid registration. All codes |
| N656N | Waco CSO |
Individual owner Wisconsin |
Standard | 2018-03-23 | ValidFAA registration status code V: Valid registration. All codes |
| N517M | Waco CSO |
Individual owner Arizona |
Standard | 2016-11-17 | ValidFAA registration status code V: Valid registration. All codes |
| N671N | Waco CSO |
No owner on file | Standard | Pending cancellationFAA registration status code 10: N-number assigned, not registered, pending cancellation. All codes |