Waco YMF
14 on the U.S. register. Built from 1934 to 1989; half of them date from 1986 or earlier. Ohio has the most (3). 36% are registered to companies, flight schools, clubs and other organisations; the rest to individuals, who are not named here at this time.
About the YMF from the FAA's model table
- Type
- Fixed-wing, single engine · Piston singles
- Power
- Piston (reciprocating), 1 engine
- Common engines
- Jacobs R755B Series (7), Jacobs L4 /R755-7 (4), None None (1)
- Seats
- 3
- 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 July 10, 1963; newest March 26, 2025
Where they are owner's state
Who owns them registrant type
By owner type, as a table
| aircraft | share | |
|---|---|---|
| Individual | 8 | 57% |
| LLC | 3 | 21% |
| Corporation | 2 | 14% |
| Co-owned | 1 | 7% |
Versions as the FAA records them · click one to list only those aircraft
| Version | Registered | Built | Share |
|---|---|---|---|
| YMF | 14 | 1934 to 1989 | 100.0% |
When they were built by decade · 4 with no year on file
Airworthiness certificate class
By airworthiness certificate, as a table
| aircraft | share | |
|---|---|---|
| Standard | 10 | 71% |
| None on file | 3 | 21% |
| Experimental | 1 | 7% |
Biggest operators companies, schools and clubs
Largest fleets, as a table
| aircraft | |
|---|---|
| Scotty Box R&D LLC | 1 |
| Mills Air Service INC | 1 |
| Green & Green Construction CO of Grenada INC | 1 |
| Dream Waco LLC | 1 |
| A M Aero LLC | 1 |
Fleet pages: Mills Air Service INC · Dream Waco LLC
Accident history NTSB records · 8 cases since 1982, 0 fatal
The 8 most recent of 8 cases where the NTSB's make and model match this family's versions. Each aircraft's own page also shows its record. How this model compares with others, with the fleet taken into account: Accidents by model in Aviation Analytics.
Questions people ask answers refresh every morning
How many Waco YMF aircraft are registered in the U.S.?
14 as of October 23, 2026, counting 1 version the FAA records separately.
Which state has the most Waco YMFs?
Ohio, with 3.
Who owns the Waco YMF?
36% 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 YMFs on the register built?
Between 1934 and 1989; half of them in 1986 or earlier.
How many Waco YMF accidents has the NTSB recorded?
8 accidents and incidents since 1982, 0 of them fatal. A model flown more shows more; the accident analytics compare models per thousand registered.
What is the Waco YMF 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 YMF 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 542, held by The Waco Aircraft Company). No FAA order in the current files names this model. Operators and repair shops have filed 13 failure reports with the FAA since 1995, 2 of them in the last ten years: about 7.1 a year for every 100 aircraft on the register; the system most often named is engine. 4 approved modifications exist for it, the most by Waco Classic Aircraft Corporation.
Failure reports 13 since 1995 · what operators and shops told the FAA
Failure reports by year, as a table
| reports | |
|---|---|
| 95 | 2 |
| 97 | 1 |
| 98 | 1 |
| 99 | 1 |
| 00 | 2 |
| 01 | 1 |
| 02 | 3 |
| 10 | 1 |
| 12 | 1 |
By system
Failure reports by system, as a table
| reports | share | |
|---|---|---|
| Engine | 4 | 31% |
| Flight controls | 4 | 31% |
| Airframe structure | 3 | 23% |
| Propeller | 2 | 15% |
Parts most often reported as the reports name them
Parts most reported, as a table
| reports | |
|---|---|
| Pulley | 3 |
| Stud | 2 |
| Blade | 1 |
| Exhaust Valve | 1 |
| Fitting | 1 |
| Hinge | 1 |
| Jackscrew | 1 |
| Nut | 1 |
| Retain Nut | 1 |
| Stiffener | 1 |
Latest reports
Approved replacement parts 19 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: wheel half (2), system (2), cup (2), cone (2), wheel (1), spacer (1), snap ring (1), skyview hdx (1), rivet (1), remote mounted (1).
Approved modifications 4 supplemental type certificates
Changes the FAA has approved for this design, from new avionics and engines to floats and parachutes. The companies holding the most:
Latest
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 YMF links to the rest of the register
- Waco 657 aircraft on the register
- Waco YMF 14 registered
- Built of steel tube, wood and fabric · A biplane of the 1920s and 1930s: steel-tube fuselage, wooden wings, fabric covering.
- Jacobs R755B series 7 of these aircraft · 275 hp
- Jacobs L4 /R755-7 4 of these aircraft · 245 hp
- Ohio 3 of these aircraft
- Texas 2 of these aircraft
- California 2 of these aircraft
- Oklahoma 1 of these aircraft
- New York 1 of these aircraft
- Scotty Box R&D LLC 1 of these aircraft
- Mills Air Service INC 1 of these aircraft
- Green & Green Construction CO of Grenada INC 1 of these aircraft
- Dream Waco LLC 1 of these aircraft
- A M Aero LLC 1 of these aircraft
- NTSB accidents and incidents involving the YMF 8 cases since 1982 · 0 fatal
- Failure reports filed on the YMF 13 reports since 1995
- Approved modifications for the YMF 4 supplemental type certificates
The whole map of how records connect · these connections as data: /graph/model/waco/ymf.json.
Aircraft newest certificates first · 14
| Tail no. | Maker and model | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|
| N72NS | Waco YMF |
Green & Green Construction CO of Grenada INC Grenada, Mississippi |
Standard | 2025-03-26 | ValidFAA registration status code V: Valid registration. All codes |
| N33KD | Waco YMF |
Individual owner Missouri |
Standard | 2025-02-06 | ValidFAA registration status code V: Valid registration. All codes |
| N14134 | Waco YMF |
Dream Waco LLC Oklahoma City, Oklahoma |
None on file | 2023-09-19 | ValidFAA registration status code V: Valid registration. All codes |
| N14128 | Waco YMF |
Individual owner Texas |
Standard | 2023-01-05 | ValidFAA registration status code V: Valid registration. All codes |
| N23JL | Waco YMF |
A M Aero LLC Wayzata, Minnesota |
Standard | 2021-08-11 | ValidFAA registration status code V: Valid registration. All codes |
| N503HD | Waco YMF |
Individual owner Texas |
Standard | 2018-04-25 | ValidFAA registration status code V: Valid registration. All codes |
| N15241 | Waco YMF |
Individual owner California |
Standard | 2014-03-25 | ValidFAA registration status code V: Valid registration. All codes |
| N99Y | Waco YMF |
Scotty Box R&D LLC Fullerton, California |
Standard | 2012-09-17 | ValidFAA registration status code V: Valid registration. All codes |
| N91JM | Waco YMF |
Individual owner New York |
Experimental | 2012-06-12 | ValidFAA registration status code V: Valid registration. All codes |
| N6377M | Waco YMF |
Mills Air Service INC Marstons Mills, Massachusetts |
Standard | 2007-05-05 | ValidFAA registration status code V: Valid registration. All codes |
| N1932J | Waco YMF |
Co-owned owner Colorado |
None on file | 1996-12-11 | ValidFAA registration status code V: Valid registration. All codes |
| N14300 | Waco YMF |
Individual owner Ohio |
None on file | 1992-03-25 | ValidFAA registration status code V: Valid registration. All codes |
| N14607 | Waco YMF |
Individual owner Ohio |
Standard | 1992-02-12 | ValidFAA registration status code V: Valid registration. All codes |
| N14132 | Waco YMF |
Individual owner Ohio |
Standard | 1963-07-10 | ValidFAA registration status code V: Valid registration. All codes |