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DEN88FA030 · Beech J35

25 Nov 1987 · KNOLLS, UT, United States Possible conflict

Beech J35 · Accident: loss of control in flight en route

From Reid-Hillview Airport of Santa Clara County (RHV) to Salt Lake City International Airport (SLC)

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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
DEN88FA030
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
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

Beech J35

Aircraft type
Beechcraft 35
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
N2EE
Operator
Unknown
Onboard fatalities
Unknown
Route
From Reid-Hillview Airport of Santa Clara County (RHV), San Jose, CATo Salt Lake City International Airport (SLC), Salt Lake City, 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 · cruise
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 › Became lost/disoriented, inadvertent
  • Pilot in command › Spatial disorientation

Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.

NTSB narrative

THE LAST COMM WITH THE FLT WAS WHEN THE PLT CONTACTED ELKO RADIO AND REQUESTED THE SALT LAKE CITY WX. HE REPORTED THAT HE WAS AT 11500 FT AND VFR ON TOP. THE SPECIALIST ON DUTY WAS UNABLE TO PROVIDE THE WX INFO DUE TO A COMPUTER SYS OUTAGE BUT RECOMMENDED THAT THE PLT CTC CEDAR CITY FLT WATCH FOR WX INFO. NO REC OF ANY FURTHER CONTACTS BY THE PLT COULD BE FOUND. APPROX 1 HR LATER, A WITNESS RPTD SEEING ACFT LIGHTS AT A LOW ALTITUDE HEADING IN A SOUTHERLY DIRECTION, NEAR THE CRASH SITE. THE WITNESS STATED THAT THE WX AT THE TIME WAS SNOW AND ICY CONDITIONS AND THE STATE HWY PATROL CONFIRMED THAT BLIZZARD CONDITIONS EXISTED IN THE AREA. EXAM OF THE WRECKAGE REVEALED THAT THE ACFT DESCENDED INTO THE DESERT IN A SLIGHT NOSE DOWN, STEEP RIGHT WING DOWN ATTITUDE ON A TRACK OF 170 DEGREES. NO EVIDENCE OF MECH FAILURE/MALF OF THE ACFT OR ITS ENG WAS FOUND. THE PLT HAD A PRIOR HISTORY OF HYPOXIC PROBLEMS. THE ALT AT WHICH HE LAST REPORTED WAS IN THE AVERAGE SUB-HYPOXIC RANGE.

Verbatim NTSB analysis from the NTSB dataset

Sources

NTSB record DEN88FA030
Event ID
20001213X32511
Case number
DEN88FA030
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 1987-11-26.
  • API snapshot SHA-256: 56e92cbc1683950ca466041d8f606e89ef25854c502a9368382c55aa51e2252c; retrieved 2026-09-21T03:53:44.712Z.