# NTSB DEN86FTI01: Miller Sievers Special, N1175, Gillette, WY, March 4, 1986

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Final report
- Date: March 3, 1986, 17:15 local (Mar 4, 1986, 00:15 UTC)
- Place: Gillette, WY
- Coordinates: 44.460193, -105.700286 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=44.4602&lon=-105.7003&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 16857
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN86FTI01
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/16857/pdf
- Page: https://openairdocs.org/ntsb/DEN86FTI01

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of engine power(partial) - nonmechanical, takeoff - initial climb
  - reason for occurrence undetermined (cause)
- Loss of control - in flight, takeoff - initial climb
  - stall - inadvertent, pilot in command (cause)
- Forced landing, descent - emergency
- Hard landing, landing - flare/touchdown

## Analysis

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.

## Aircraft

- Registration: [N1175](https://openairdocs.org/deregistered/N1175-2013-08-05), registration cancelled 2013-08-05, S/N SS101, built 1968 (OpenAirDocs)
- Reported make and model: MILLER SIEVERS SPECIAL (SIEVERS SP)
- Registry model: [Miller SIEVERS SPECIAL](https://openairdocs.org/model/miller-sievers-special) (registry code 05601X7) (OpenAirDocs)
- Registry engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: SS101
- Airframe hours: 105
- Engines: CONTINENTAL C-85-8FJ 85 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Barry D. Stanley
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Annual, March 2, 1986
- Departed: GCC, GILLETTE, WY
- Airport: GCC, Gillette-Campbell County, runway 34, 7,500 × 150 ft, concrete

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 40; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: front; flight hours: 1,225 total, 1 in this make and model, 1,094 as pilot in command, 1 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 315° at 7 knots
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 43 °F, dew point 25 °F
- Altimeter: 30.00 inHg
- Observed at: GCC

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19860303006539A](https://openairdocs.org/incident/19860303006539A), Mar 3, 1986: Gillette, WY, Substantial damage. Lost partial power on takeoff. Did not recover from a stall in time to prevent impact with the ground.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.