Waco ASO
Everything here is true of every aircraft of the type, not of any one aircraft.
The ASO is the Waco 10 airframe with a 220 hp Wright J-5 Whirlwind and the straight (as opposed to tapered) wing - A for the engine, S for straight wing, O for the Model 10 fuselage. It received ATC A-41 in June 1928 after Whirlwind-powered 10s placed in the 1927 Ford Reliability Tour, and sold for $7,215 from the factory in 1928.
Buying one is buying a 1928 aeroplane around a nine-cylinder Wright that has been out of production for ninety years; the airframe is the common Waco 10 (steel-tube fuselage, wood wings, fabric) and parts and expertise for it exist in the antique community, but the J-5 is the scarce item and a survivor may well carry a later Wright or Continental under an old approval. No weights or performance for the ASO specifically were found in the pages read, so the row carries the Model 10's dimensions only and leaves the rest blank rather than borrow the OX-5 model's numbers, which it outperforms by a wide margin. Treat the aircraft's own weight-and-balance and logbooks as the record.
Variants of the Waco 10 / O series
- GXE · 1927 · 33 active
- ASO · 1928 · 33 active · this page
Also consider
TAILFAX SCORE
Not enough data for an overall score yet
Among 3–4 seat pistons (223 models)
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Put Waco ASO side by side with up to three other models.
- Waco ASO
Watch this model
One email a day if anything changes: new ADs and NTSB records.
What it is
| Seats | 3 |
|---|---|
| Landing gear | taildragger |
| Engines | 1 |
| Engine | Wright J-5 Whirlwind |
| Horsepower | 220 hp |
| Fuel | 100LL |
| Certification basis | CAR3 |
| Production start | 1928 |
| Production end | 1929 |
| Endorsements required | tailwheel;high-performance |
Performance
| Cruise (75 % power) | — |
|---|---|
| Range (75 %, standard fuel, 30-min reserve) | — |
| Service ceiling | — |
| Climb rate | — |
| Stall speed (Vso) | — |
| Takeoff over 50 ft | — |
| Landing over 50 ft | — |
Load and fuel
| Seats | 3 |
|---|---|
| Useful load | — |
| Full-fuel payload | — |
| Max takeoff weight | — |
| Empty weight | — |
| Usable fuel | — |
| Fuel burn at cruise | — |
Estimated cost to own
An estimate, not a quote. Change the inputs to match how you would fly it. Defaults are for a single-engine piston, 3–4 seats.
| Maintenance reserve | hourly | $2,000/yr | |
| Insurance | fixed | $2,000/yr | |
| Annual inspection | fixed | $1,800/yr | |
| Hangar | fixed | $6,000/yr | |
| Rental rate, wet | for comparison |
No fuel burn is on record for this model, so fuel is not included.
No TBO or overhaul cost is on record for this model, so the engine reserve is not included.
How these estimates are built. Fuel = this model's typical burn x the national average price from AirNav's Fuel Price Report (100LL $7.41, Jet A $7.66 per gallon, 5 Oct 2026; your airport may differ by $2 or more). Engine reserve = typical overhaul cost / TBO for this engine. The remaining lines are class-level defaults, not quotes for this aircraft: annual inspection is the base inspection fee (findings are counted in the per-hour maintenance line); insurance assumes an instrument-rated owner with time in type and a $1M liability limit - less experienced pilots commonly pay 1.5-2x; hangar and tie-down are national mid-tier figures, with rural and metro options; the rental rate is a 2026 flight-school rate for a comparable aircraft, including fuel. Twin and turboprop maintenance defaults are estimates, not published figures. Sources: AirNav, BWI Aviation Insurance (2019-2026), Flying (May 2026), Savvy Aviation, American Flight Schools, published airport rate sheets. Every default is editable - change any number to match your situation. Depreciation, taxes, financing and major upgrades are not included. Depreciation is not included. An estimate, not a quote.
Cost of ownership
| Price, low | — |
|---|---|
| Price, high | — |
| Prices as of | — |
| Engine TBO | — |
| Overhaul cost, low | — |
| Overhaul cost, high | — |
The fleet and its record
| Registered, all time | 80 |
|---|---|
| Active fleet | 33 |
| Median year built | 1929 |
| NTSB events, last 10 years | 1 |
| Fatal events, last 10 years | 0 |
| Events per 1,000 active, last 10 years | 30.3 · thin base (low)1 |
| Personal-flying events per 1,000 active | 30.3 · thin base (low)2 |
| Ownership transfers, last 24 months | 4 |
| Transfers per 100 active | 12.12 · thin base (low)3 |
| Airworthiness directives | 0 |
| Directives, last 5 years | 0 |
| Rate confidence | low |
- Events per 1,000 active, last 10 years: per 1,000 active aircraft · base 33 active.
- Personal-flying events per 1,000 active: per 1,000 active aircraft · base 33 active.
- Transfers per 100 active: per 100 active aircraft · base 33 active.
Peer scores6
| Peer class | Fixed wing single-engine, piston, 1 engine, 3-4 seats |
|---|---|
| Accident record | —1 |
| Severity | —2 |
| Access | —3 |
| Support | 1.5 of 104 |
| Liquidity | 0.7 of 105 |
- Accident record: class median 33.21 · 223 models in class.
- Severity: class median 12.5.
- Access: class median 796.
- Support: class median 131.
- Liquidity: class median 19.89.
- Each of the five categories places the model within its peer class, from 0 (the worst of the class) to 10 (the best): a position among comparable models, not a grade. The overall score is the sum of the categories shown that are scored, out of 10 for each (50 when all five are); it is given only when at least 4 of the five are scored, and it can be set against another model's only when both are in the same peer class and scored on the same categories. When accident record and severity cannot be scored because the model has too few records, the other three give a partial score out of 30, labelled as such; it is never set against a full score.
Data as of: FAA registry Sep 28 · NTSB Oct 2 · ADs Oct 8 · scores Sep 30