DEN89LA058

NTSB accident investigation · Piper PA-31T · Craig, CO · January 6, 1989

Accident · No injuriesLimited investigationFinal report
Date
January 6, 1989, 13:07 local (20:07 UTC)
Place
Craig, CO
Injuries
6 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N82290Piper PA-31T
Weather
Instrument (IMC) · Day
Status
Completed · report March 25, 1991
Report
Approved by Office Director
FAA report
19890106000369A
Case key
17661

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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Probable cause

Unsuitable terrain (runway condition) selected by the pilot. Factors related to the accident were: the adverse weather conditions, inadequate removal of snow from the runway by airport personnel, uneven snow covered runway, lack of visual perception by the pilot, and snowbanks beside the runway.

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.

Loss of control - on ground/waterTakeoff - roll/run
Weather condition - snowFactor
Weather condition - fogFactor
Weather condition - obscurationFactor
Airport facilities,runway/landing area condition - snow coveredFactor
Airport snow removal - inadequateAirport personnelFactor
Airport facilities,runway/landing area condition - rough/unevenFactor
Unsuitable terrain or takeoff/landing/taxi area - selectedPilot in commandCause
Visual/aural perceptionPilot in commandFactor
Directional control - not maintainedPilot in command
Ground loop/swerve - uncontrolled
On ground/water encounter with terrain/waterTakeoff - roll/run
Terrain condition - snowbankFactor

Analysis

The plt requested the snow covered rwy be replowed before he took off. He rprtd that afterward, he saw no snow ridges or evidence of uneven plowing & concluded the 'runway demarcation was adequate for takeoff.' He said that drg takeoff, at about 80 KTS, he felt the left gear drag and the airplane began to swerve left. He corrected with rudder & the airplane swerved to the right edge of the rwy. Subsequently, the plt lost control of the airplane & it continued into a snowbank & was damaged. Rprtdly, the acft swerved after encountering a 'snowridge' left by the snowplow. No pre-acdnt part failure or malfunction was rprtd.

Aircraft

Registration
N82290
Reported as
Piper PA-31T
Category
Airplane
Serial number
31T-7820058
Airframe hours
2,450
Engine
P&W PT6A-28, 620 horsepower, turbo prop
Damage
Substantial damage
Flight
Executive/Corporate · Part 91
Operator
Cummins Power Inc, doing business as Turbowest
Registered owner
Cummins Power, Inc
Airworthiness certificate
Standard, Normal
Last inspection
Continuous airworthiness · August 11, 1988 · 60 hours before
Departed
CAG
Destination
APA · Englewood, CO
Flight plan
IFR
Airport
CAG · Craig-Moffat, runway 25, 5,600 × 100 ft, asphalt

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
47
Certificates
Airline transport, Flight instructor
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
9,555 total · 2,300 in this make and model · 9,319 as pilot in command · 78 in the last 90 days · 32 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Instrument (IMC) · Day
Wind
330° at 5 knots
Lowest ceiling
400 ft
Temperature
23 °F, dew point 19 °F
Altimeter
29.00 inHg

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.