Rans S-9 Chaos
These figures describe a typical build. Each aircraft of this design was built by its owner, and the one you are looking at may differ.
The Rans S-9 Chaos is Randy Schlitter's single-seat aerobatic mid-wing of 1986, a steel-tube-and-fabric kit stressed to +6/-4 g: 22 ft span, 375 lb empty and 710 lb gross with a 65 hp Rotax 582, which Rans quotes at 100 mph cruise, a 41 mph stall, 1,000 fpm and a 100-degree-per-second roll rate.
The Chaos is an aerobatic toy in the best sense - light, quick-rolling, cheap to run - and a single-seater with a two-stroke engine, so there is no training version and the engine wants an owner who understands two-stroke care, fuel mixing and the 582's short overhaul life; a 912-engined example is heavier, more expensive and far longer-lived. The 9-gallon tank gives barely an hour and a half, and the 335 lb useful load limits the pilot's weight and fuel together. Kit-built, so weld quality, fabric age and the wing-attach fittings are the inspection and the builder's log the history. The owner may maintain it and the condition inspection needs an A&P or the repairman certificate; Rans still supports it with parts.
Variants of the Rans S-9 Chaos / S-10 Sakota
- S-9 Chaos · 1986 · 36 active · this page
- S-10 Sakota · 1988 · 23 active
Also consider
TAILFAX SCORE
Partial: 11.1 out of 30 (safety not scored, too few records)
Among 1–2 seat pistons (321 models)
Compare with…
Put Rans S-9 Chaos side by side with up to three other models.
- Rans S-9 Chaos
Open Rans S-9 Chaos in Compare
Watch this model
One email a day if anything changes: new ADs and NTSB records.
What it is
| Seats | 1 |
|---|---|
| Landing gear | tailwheel |
| Engines | — |
| Engine | Rotax 582 (65 hp; Rotax 912ULS 100 hp option) |
| Horsepower | 65 hp |
| Fuel | — |
| Certification basis | amateur-built |
| Production start | 1986 |
| Production end | — |
| Endorsements required | — |
Performance
| Cruise speed | 87 KTAS |
|---|---|
| Range | 136 nm |
| Service ceiling | 15,000 ft |
| Climb rate | 1,000 ft/min |
| Stall speed (Vso) | 36 KCAS |
| Takeoff over 50 ft | — |
| Landing over 50 ft | — |
Load and fuel
| Seats | 1 |
|---|---|
| Useful load | 335 lb |
| Full-fuel payload | — |
| Max takeoff weight | 710 lb |
| Empty weight | 375 lb |
| Usable fuel | — |
| Fuel burn at cruise | — |
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 | 99 |
|---|---|
| Active fleet | 36 |
| Median year built | 1997 |
| NTSB events, last 10 years | 1 |
| Fatal events, last 10 years | 0 |
| Events per 1,000 active, last 10 years | 27.78 · thin base (low)1 |
| Personal-flying events per 1,000 active | 27.78 · thin base (low)2 |
| Ownership transfers, last 24 months | 9 |
| Transfers per 100 active | 25 · 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 36 active.
- Personal-flying events per 1,000 active: per 1,000 active aircraft · base 36 active.
- Transfers per 100 active: per 100 active aircraft · base 36 active.
Peer scores6
| Peer class | Fixed wing single-engine, piston, 1 engine, 1-2 seats |
|---|---|
| Accident record | —1 |
| Severity | —2 |
| Access | 0.9 of 103 |
| Support | 2.9 of 104 |
| Liquidity | 7.3 of 105 |
| Overall (sum of the categories shown) | Partial: 11.1 out of 30 (safety not scored, too few records)6 |
- Accident record: class median 36.69 · 321 models in class.
- Severity: class median 13.04.
- Access: class median 1,000.
- Support: class median 77.5.
- Liquidity: class median 20.
- 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 6 · scores Sep 30