DEN89LA148

NTSB accident investigation · Piper PA-18-150 · Durango, CO · June 26, 1989

Accident · No injuriesLimited investigationFinal report
Date
June 26, 1989, 10:15 local (16:15 UTC)
Place
Durango, CO
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N4137ZPiper PA-18-150
Weather
Visual (VMC) · Day
Status
Completed · report June 28, 1991
Report
Approved by Office Director
FAA report
19890626017589A
Case key
17730

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

The pilot failed to maintain directional control, which resulted in an inadvertent groundloop/swerve. A factor related to the accident was: the adverse wind condition.

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/waterLanding - roll
Weather condition - tailwindFactor
Weather condition - crosswindFactor
Directional control - not maintainedPilot in commandCause
Ground loop/swerve - inadvertentPilot in commandCause
Dragged wing,rotor,pod,float or tail/skidLanding - roll

Analysis

During a glider tow flt, the plt took off to the south. After releasing the glider, he returned & landed to the north with a 5 kt quartering tailwind. As he was landing, the acft veered right. The plt overcorrected to the left & the plane turned sharply left, then the right wing struck the ground & was damaged.

Aircraft

Registration
N4137Z
Reported as
Piper PA-18-150
Category
Airplane
Serial number
18-8209
Engine
Lycoming O-320-A2A, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 91
Operator
Lavern D. St Clair, doing business as Val Air Soaring
Departed
CD82
Destination
CD82
Airport
CD82 · Val Air, runway 36, 3,100 × 100 ft, grass/turf

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
63
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Flight hours
4,658 total · 118 in this make and model · 4,400 as pilot in command · 4 in the last 90 days · 3 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
120° at 5 knots
Visibility
50 statute miles
Lowest ceiling
None
Temperature
-0 °F, dew point -0 °F

FAA reports on this event · 1

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

Other investigations on N4137Z · 1

Matched to the same aircraft by N-number and date.