DEN86LA183

NTSB accident investigation · Piper PA-25-235 · Bynum, MT · July 2, 1986

Accident · No injuriesLimited investigationFinal report
Date
July 2, 1986, 11:00 local (17:00 UTC)
Place
Bynum, MT
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N7099ZPiper PA-25-235
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19860702029869A
Case key
16998

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

On this page

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 objectTakeoff - initial climb
Door,exterior crew - incorrectFactor
Preflight planning/preparation - inadequatePilot in commandCause
Diverted attentionPilot in commandFactor
Throttle/power control - reducedPilot in commandCause
Procedures/directives - improperPilot in commandCause
Rotation - delayedPilot in commandCause
Object - fenceFactor
In flight collision with terrain/waterDescent - uncontrolled

Analysis

After the first landing on a gravel road for reloading liquid insecticide the pilot attempted to take off for an aerial application flight. During the take off ground roll the pilot observed that the left door was not properly closed. He momentarily reduced power to close the door and then continued the take off. Immediately after takeoff the aircraft stuck six ft high fence posts adjacent ot a cattle guard across the road and impacted on the road.

Aircraft

Registration
N7099Z
Reported as
Piper PA-25-235
Category
Airplane
Serial number
25-2714
Airframe hours
3,499
Engine
Lycoming O-540, 235 horsepower, reciprocating
Damage
Substantial damage
Fire
On-Ground
Flight
Aerial application · Part 137
Registered owner
Thomas H. Mellott
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · April 8, 1986 · 178 hours before
Departed
Bynum, MT

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
46
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
3,250 total · 1,200 in this make and model · 3,180 as pilot in command · 178 in the last 90 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
180° at 5 knots
Visibility
50 statute miles
Lowest ceiling
None
Temperature
84 °F

FAA reports on this event · 1

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