DEN86FTI01 · Miller SIEVERS SPECIAL SIEVERS SP
Miller SIEVERS SPECIAL SIEVERS SP · Accident: partial loss of engine power (non-mechanical) during initial climb
From Northeast Wyoming Regional Airport (GCC) to an unrecorded destination
Event
- NTSB case
- DEN86FTI01
- 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
- 0
- 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
Miller SIEVERS SPECIAL SIEVERS SP
- Aircraft type
- Miller SIEVERS SPECIAL
- 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
- N1175
- Operator
- Barry D. Stanley · private individual
- Onboard fatalities
- Unknown
- Route
- From Northeast Wyoming Regional Airport (GCC), Gillette, WYTo 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
- Initial climb
- 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
- Partial loss of engine power (non-mechanical)
- Also codedOther events the NTSB coded in the sequence, such as a wire strike after a loss of power. Flight Findings uses them for its kinds of event. Glossary
- Stall
- 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
- Pilot in command › Stall, inadvertent
- Reason for occurrence undetermined
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
ON MARCH 3, 1986 AT APPROXIMATELY 1715 MST, AN EXPERIMENTAL MILLER, SIEVERS SPECIAL, STRUCK THE GROUND DURING TAKEOFF AT THE GILLETTE-CAMPBELL COUNTY AIRPORT, GILLETTE, WYOMING. THE PILOT STATED THAT JUST AFTER TAKEOFF ON RUNWAY 34, THE AIRCRAFT APPEARED TO LOSE A LITTLE POWER AT APPROXIMATELY 500 FEET AS HE WAS STARTING A LEFT TURN. THE AIRCRAFT HAD INSUFFICIENT AIRSPEED AND STALLED. THE PILOT INDICATED THE AIRSPEED WAS INDICATING ABOUT 60 MPH. HE ATTEMPTED RECOVERY BY PUSHING THE CONTROL STICK FORWARD AND HEADED FOR A FIELD WEST OF THE RUNWAY. NO REASON FOR THE POWER LOSS COULD BE DETERMINED.
Verbatim NTSB analysis from the NTSB dataset
Sources
NTSB record DEN86FTI01
- Event ID
- 20001213X33033
- Case number
- DEN86FTI01
- 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: local date, investigation status. Values present in the bulk record are kept.
- The date is the local date; the NTSB stores the UTC date 1986-03-04.
- API snapshot SHA-256: 5eb872313dd36a74d32985df50f1eeb0eec919fe530f5d7715ae725be4bc1b8f; retrieved 2026-09-22T01:31:36.756Z.