DEN91FA039 · Piper PA-24-400
Piper PA-24-400 · Accident: in flight collision with object en route
From Aspen-Pitkin County Airport (Sardy Field) (ASE) to an unrecorded destination
Event
- NTSB case
- DEN91FA039
- 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
- Visual Meteorological Cond
Piper PA-24-400
- Aircraft type
- Piper PA-24
- 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
- N8510P
- Operator
- Brian Balarzs/Lester Beauchamp
- Onboard fatalities
- Unknown
- Route
- From Aspen-Pitkin County Airport (Sardy Field) (ASE), Aspen, COTo 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
- En route · climb to 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
- In flight collision with object
- 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
- Tree(s)
- 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 › Proper altitude, not attained
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
THE TWO AIRPLINE PILOTS TOLD FRIENDS THEY WERE GOING SIGHTSEEING. WHEN THEY FAILED TO RETURN AS PLANNED, A SEARCH WAS BEGUN. THE WRECKAGE WAS FOUND 3 DAYS LATER. THE AIRPLANE HAD BEEN FLYING UP THE WEST SIDE OF A MOUNTAIN PASS WHEN IT STRUCK A TREE AND IMPACTED DEEP SNOW AT ABOUT THE 11,200 FOOT LEVEL. AUTOPSIES INDICATED BOTH PILOTS SURVIVED THE IMPACT. ONE OF THE PILOTS ATTEMPTED TO SEEK HELP. HIS BODY WAS FOUND ONE MILE FROM THE WRECKAGE. THE AIRCRAFT WAS NOT EQUIPPED WITH FIRST AID OR SURVIVAL GEAR. THERE WAS NO EVIDENCE OF PREIMPACT MECHANICAL FAILURE/MALFUNCTION.
Probable cause
THE PILOT'S FAILURE TO MAINTAIN A PROPER ALTITUDE IN MOUNTAINOUS TERRAIN.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record DEN91FA039
- Event ID
- 20001212X16435
- Case number
- DEN91FA039
- 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 1991-02-08.
- API snapshot SHA-256: 2f9bd6ec6c1a882a6794936820c0c89d44952c8f9a82814c281eff87b16965fd; retrieved 2026-09-21T01:58:53.029Z.