DEN85FA227

NTSB accident investigation · Piper PA-31B-310 · Vernal, UT · August 21, 1985

Accident · Serious injuriesField investigationFinal report
Date
August 21, 1985, 06:51 local (12:51 UTC)
Place
Vernal, UT
Injuries
1 serious
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N7497LPiper PA-31B-310
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19850821039829A
Case key
16554

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

In flight collision with terrain/waterDescent - normal
Terrain condition - groundFactor
Judgment - poorPilot in commandFactor
Fatigue(chronic)Pilot in commandCause
Terrain condition - open fieldFactor
Fatigue(lack of sleep)Pilot in commandCause
Light condition - dawnFactor

Analysis

The plt cancelled his IFR plan and began descent from 13000 ft in preparation for landing at Vernal, UT. The acft impacted ground in wings level attitude under power. Plt was seriously burned by post-crash ground fire. Investigation revealed no evidence of flight control failure prior to impact. It was learned plt had flown small acft from salt lake city to price, UT, and to pierre, SD, the day before the accident. Plt returned to salt lake city at 0200 on day of accident. Accident flt departed salt lake city at 0600. FAA physician opined that plt was asleep at impact. Acft was flying into rising sun.

Aircraft

Registration
N7497L
Reported as
Piper PA-31B-310
Category
Airplane
Serial number
317300928
Airframe hours
7,946
Engine
Lycoming TI0-540 SER, 310 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Part 135
Registered owner
California Air Charter, Inc
Airworthiness certificate
Standard, Normal
Last inspection
Continuous airworthiness · August 14, 1985 · 11 hours before
Departed
SLC · Salt Lake City, UT
Destination
VEL · Vernal, UT
Flight plan
IFR
Airport
VEL · Vernal, runway 34, 6,605 × 150 ft, asphalt

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
36
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
1,556 total · 207 in this make and model · 835 as pilot in command · 350 in the last 90 days · 153 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
300° at 4 knots
Visibility
40 statute miles
Lowest ceiling
None
Temperature
61 °F, dew point 46 °F
Altimeter
30.00 inHg
Observed at
VEL, 8 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.