DEN99FA064 · Piper PA-32-300
Piper PA-32-300 · Accident: in flight encounter with weather en route
From Durango La Plata County Airport (DRO) to Perry Municipal Airport (PRO)
Event
- NTSB case
- DEN99FA064
- 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
- 3 · 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
Piper PA-32-300
- Aircraft type
- Piper PA-32
- 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
- N56306
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Durango La Plata County Airport (DRO), Durango, COTo Perry Municipal Airport (PRO), Perry, IA
- 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 encounter with weather
- 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
- Visual flight rules (VFR) flight into instrument meteorological conditions (IMC)
- 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 › VFR flight into imc, continued
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
Before departing on the accident flight, the non-instrument rated pilot received two weather briefings, and was advised both times that VFR flight was not recommended. AIRMETs were forecasted for IFR conditions, mountain obscurement, turbulence, and icing conditions along the route of flight. Density altitude was calculated to be 13,248 feet. The aircraft became the subject of an ALNOT when it failed to arrive at its destination later that day. It was located on the morning of April 7 in a snow chute area along a 35 degree inclining slope on the east side of Chalk Peak in the San Juan Mountains east of Durango. Immediate travel to the accident site was delayed due to avalanche conditions and high snow levels. According to surface analysis data, the rising terrain at the north end of the Chalk Mountains was obscured by clouds, with an area of low pressure over Colorado and a weak cold front extended from central Nevada and Utah to along the Wyoming-Colorado border. Examination of the wreckage did not disclose any evidence of mechanical malfunction.
Probable cause
The pilot's continued VFR flight into IMC conditions. Related factors were flight into known adverse weather, the adverse weather, mountain obscuration, snow, icing, and high density altitude.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record DEN99FA064
- Event ID
- 20001205X00302
- Case number
- DEN99FA064
- 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: a08d19909ca81eca14a0eee701f46c66cc35083c134dc40b39e163468355fc85; retrieved 2026-09-20T22:10:44.397Z.