CEN10CA528 · Clem William B III DOMINATOR GYROCOPTER
Clem William B III DOMINATOR GYROCOPTER · Accident: loss of control in flight during landing
From C)12 · Brighton, CO to C)12 · Brighton, CO
Narrative check · The NTSB narrative appears to contradict this record's departure or destination. Values are shown as recorded, not corrected; compare with the narrative.
Event
- NTSB case
- CEN10CA528
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Accident
- InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
- Completed
- API-reported fatalities
- 0 · all aircraft and ground
- Ground fatalities
- Unknown
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- General aviation
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Visual Meteorological Cond
Clem William B III DOMINATOR GYROCOPTER
- Aircraft type
- Clem William B Iii DOMINATOR GYROCOPTER
- Category
- Gyroplane
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- N36MR
- Operator
- Clem William B III · private individual
- Onboard fatalities
- Unknown
- Route Narrative disagrees
- From C)12 · Brighton, COTo C)12 · Brighton, CO
- Aircraft age
- Not recorded
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Part 91: General Aviation
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- Landing
- Defining eventThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- Loss of control in flight
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Substantial
Cause areas
- Personnel issues › Action/decision
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The private pilot was preparing to land his gyroplane when he encountered a downdraft, which increased his rate of descent. The pilot was unable to arrest the descent rate and landed hard. As a result the left main gear axle broke, causing the lower rudder strut to contact the ground. The strut bent upwards into the propeller, splintering the propeller and causing substantial damage to the rudder. The pilot reported that the downdraft was caused by an 80-degree crosswind that blew over houses just to the northeast of the runway threshold. The pilot did not report any mechanical deficiencies with the gyroplane prior to the accident.
Probable cause
The pilot's failure to maintain control of the gyroplane during landing.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CEN10CA528
- Event ID
- 20100909X41052
- Case number
- CEN10CA528
- Dataset
- full-current
- Source SHA-256
- 5cf380f0061817c0331a6b2d8cc7e0ee3a79bea469a1001dc5c10e56f35f5ab3
Source notes (4)
- Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
- Filled from the NTSB case API where the bulk record had no value: investigation status. Values present in the bulk record are kept.
- The date is the local date, which is the same as the UTC date the NTSB stores.
- API snapshot SHA-256: 914bdb788195ed31d72e7c80b5b4f9bee0a67ff6edc6e6a4c380dd599522537e; retrieved 2026-09-15T15:08:30.582Z.