# NTSB DEN86MA129: Gulfstream 690D, N200PR, Price, UT, May 7, 1986

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Major investigation · Final report
- Date: May 7, 1986, 11:06 local (17:06 UTC)
- Place: Price, UT
- Coordinates: 39.570579, -110.800849 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.5706&lon=-110.8008&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 6 fatal
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 17061
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN86MA129
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/17061/pdf
- Page: https://openairdocs.org/ntsb/DEN86MA129

## Sequence of events

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

- In flight encounter with weather, descent - normal
  - weather condition - clouds (contributing factor)
  - weather condition - low ceiling (contributing factor)
  - weather condition - turbulence in clouds (contributing factor)
  - weather condition - icing conditions (contributing factor)
- Loss of engine power(total) - nonmechanical, descent - normal
  - in-flight planning/decision - improper, pilot in command (cause)
  - procedures/directives - not followed, pilot in command (cause)
  - anti-ice/deice system - improper use of, pilot in command (cause)
  - aircraft performance,two or more engines - inoperative (contributing factor)
  - fuselage,cabin - decompression
- Loss of control - in flight, descent - emergency
  - aircraft handling - not maintained, pilot in command (cause)
  - spatial disorientation, pilot in command (cause)
  - remedial action - attempted
- Airframe/component/system failure/malfunction, descent - uncontrolled
  - design stress limits of aircraft - exceeded (cause)
  - horizontal stabilizer attachment - overload
  - vertical stabilizer attachment - overload
  - stabilizer - separation
- In flight collision with terrain/water, descent - uncontrolled
  - terrain condition - mountainous/hilly

## Analysis

AT 1042 MDT, THE FLT RPRTD MOD TURBC AT FL 240, BUT ELECTED TO REMAIN AT THAT ALT. AT 1055, THEY WERE CLRD TO DSCND AT PLT'S DESCRETION TO MAINT 12,000'. APRX 8 MIN LATER, SHORTLY AFTER BGNG A DSCNT, THE FLT WAS INSTRUCTED TO CHG FREQ; BUT21 SECS LATER, THEY REPLIED 'STANDBY PLEASE,' THEN RADIO & RADAR CONTACT WERE LOST. WRECKAGE WAS FND APRX 26 MI EAST OF THE DESTN ARPT IN MTNS. AN EXAM REVEALED THE EMPENNAGE HAD SEPD IN FLT; PIECES OF IT WERE FND UP TO 1 MI AWAY WITH INDCNOF OVERLOAD FAILURE. THERE WAS EVIDENCE THAT: ENGS WERE NOT OPERATING AT GND IMPACT, IGNITION SWS WERE ENGAGED; L ENG START SW WAS IN THE 'AIR' START PSN & R SW WAS BEYOND THE 'GROUND' START PSN; R PROP WAS FEATHERED; PAX OXYGEN MASKS WERE DEPLOYED, INDICATING CABIN HAD DEPRESSURIZED ABV 15,000'. WX INFO INDCD CLD BASES AT 10,000' WITH IMC & TURBC TO 25,000', MIXED ICG FM 20,000' TO 25,000', LGT RAIN/SNW SHWRS, WIDELY SCAT TSTMS; APRX 15 MI SOUTH, 4' TO 5' OF HAIL FELLAT APRX THAT TIME. TPE 331 ENGS HAD HISTORY OF FLAMEOUTS DUE TO ICE INJESTION CAUSED BY IMP USE OF ANTI-ICE/IGNITION.

## Aircraft

- Registration: [N200PR](https://openairdocs.org/deregistered/N200PR-2000-05-10), registration cancelled 2000-05-10, S/N 15029 (OpenAirDocs)
- Reported make and model: GULFSTREAM 690D
- Registry model: [Gulfstream AM Corp Comm Div 690D](https://openairdocs.org/model/gulfstream-am-corp-comm-div-690d) (registry code 3970405) (OpenAirDocs)
- Category: Airplane
- Serial number: 15029
- Airframe hours: 1560
- Engines: AIRESEARCH TPE-331-5 748 horsepower turbo prop
- Damage: Destroyed
- Flight: Business, Part 91
- Operator: Kaiser Steel Corp
- Registered owner: First Security Bank Of Utah
- Airworthiness certificate: Standard, Normal
- Last inspection: Continuous airworthiness, April 22, 1986, 10 hours before
- Departed: COS, COLORADO SPRING, CO
- Destination: PUC, PRICE, UT
- Flight plan: IFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 36; airline transport, flight instructor; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; toxicology performed; flight hours: 6,578 total, 421 in this make and model, 5,791 as pilot in command

## Weather

- Conditions: Instrument (IMC), Day
- Wind: 360° at 7 knots
- Visibility: 8 statute miles
- Lowest ceiling: 15,000 ft broken
- Temperature: 39 °F
- Altimeter: 29.00 inHg
- Observed at: GJT, 70 nm away

## 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 19860507042139A](https://openairdocs.org/incident/19860507042139A), May 7, 1986: Gulstm 690D, Price, UT, Destroyed, 4 fatal. Suspect double engine flame out from misuse of engine anti ice and ignition led to control loss dive and breakup.

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.

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