DEN86MA129 · Gulfstream 690D
Kaiser Steel Gulfstream 690D · Accident: in flight encounter with weather en route
From City of Colorado Springs Municipal Airport (COS) to Carbon County Regional Airport / Buck Davis Field (PUC)
Narrative check · The NTSB narrative appears to contradict this record's location. Values are shown as recorded, not corrected; compare with the narrative.
Event
- NTSB case
- DEN86MA129
- 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
- 6 · 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
- Instrument Meteorological Cond
Gulfstream 690D
- Aircraft type
- Gulfstream 690
- 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
- N200PR
- Operator
- Kaiser Steel
- Onboard fatalities
- Unknown
- Route
- From City of Colorado Springs Municipal Airport (COS), Colorado Springs, COTo Carbon County Regional Airport / Buck Davis Field (PUC), Price, UT
- 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
- En route · descent
- 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
- In flight encounter with weather
- 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
- Design stress limits of aircraft › Exceeded
- Pilot in command › Aircraft handling, not maintained
- Pilot in command › Anti-ice/deice system, improper use of
- Pilot in command › In-flight planning/decision, improper
- Pilot in command › Procedures/directives, not followed
- Pilot in command › Spatial disorientation
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
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.
Verbatim NTSB analysis from the NTSB dataset
Sources
NTSB record DEN86MA129
- Event ID
- 20001213X33545
- Case number
- DEN86MA129
- 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. 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: 180b9abd7ac1a451d8496038a46e9d0065ba9ec65890f4ecc2f0aa3f06c53789; retrieved 2026-09-21T04:35:17.884Z.