ANC05LA033 · Twente Pitts Model 12
Twente Pitts Model 12 · Accident: loss of control in flight while maneuvering
From Topton Air Estates Airport (0MS0) to an unrecorded destination
Event
- NTSB case
- ANC05LA033
- 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
- 2 · 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
Twente Pitts Model 12
- Aircraft type
- Twente PITTS MODEL 12
- Category
- Airplane
- 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
- N20GT
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Topton Air Estates Airport (0MS0), Topton Air, MSTo not recorded
- 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
- Maneuvering
- First occurrenceThe 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
- Destroyed
Cause areas
- Pilot in command › Aircraft control, not maintained
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
The commercial certificated pilot/owner was conducting a low altitude aerobatic flight maneuver in an experimental, amateur-built airplane under Title 14, CFR Part 91 when the accident occurred. An FAA inspector who traveled to the site said a witness told him that the airplane had just completed a loop when it rolled abruptly to the left and dove into the ground. The inspector said the airplane impacted the ground in a near vertical attitude. Additional witnesses told the National Transportation Safety Board (NTSB) investigator-in-charge (IIC), that the pilot/owner typically performed single aerobatic maneuvers at 800-1,000 feet above the ground. One witness told the IIC that she saw the airplane descending in a spiral, as she had seen before, but the spiral was tighter and faster than before. She said the pilot did not pull out at the usual height, and descended below the trees. The first person to the accident site was a student pilot and friend of the accident pilot. He said he and his wife watched the accident airplane perform a loop and then enter a counter-clockwise spin at the bottom of the loop. A postcrash fire consumed most of the airplane. During the on-site examination, the FAA inspector found the right cable attachment point to the rudder horn had fractured, and the cable was disconnected. The rudder horn assembly was sent to the NTSB Materials Laboratory for analysis. The analysis disclosed that prior to the fracture, the outboard portion of the horn, where the cable was attached, was bent downward almost perpendicular to its normal plane of rotation. Information received from the rudder horn manufacturer indicated that under normal flight control inputs, there are no mechanical loads that would account for the deformation of the rudder horn prior to the fracture. The airplane was kit-built, and maintained by the pilot under the "condition inspection" criteria. No pilot, airframe, or engine logbooks, were discovered for examination. No evidence of any preimpact mechanical anomaly was found.
Probable cause
The pilot's failure to maintain control of the airplane while performing a low altitude, aerobatic maneuver, which resulted in an uncontrolled descent, and an in-flight collision with terrain. A factor associated with the accident was the initiation of a low altitude aerobatic maneuver.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record ANC05LA033
- Event ID
- 20050303X00262
- Case number
- ANC05LA033
- Dataset
- historical-pre2008
- Source SHA-256
- 89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
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, coordinates. 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: 82267b2d81724b69721cc8f4abe9f62c75aada4f9579cb097445042595ca7a39; retrieved 2026-09-20T18:07:12.264Z.