- Date
- August 14, 2002, 08:50 local (13:50 UTC)
- Place
- Ray, ND
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Takeoff
- Aircraft
- N7634ZPiper PA-25-235
- Weather
- Visual (VMC) · Day
- Status
- Completed · report September 20, 2002
- Report
- Approved by Office Director
- Parties
- FAA-Fargo FSDO
- FAA report
- 20020814021929A
- Case key
- 55571
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
The pilot inadvertently stalled the airplane during takeoff. A factor was the tailwind.
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.
Analysis
The airplane sustained substantial damage when the airplane stalled during takeoff and impacted the terrain. The pilot reported he had returned to the airstrip in order to fix a plugged spray nozzle. He landed on the southwest runway of the grass airstrip. Once the nozzle was fixed he departed to the northeast. He reported he departed on the northeast runway due to a construction crane located at the southwest end of the runway. He estimated he departed with a 3-4 knot tailwind. He reported, "Upon liftoff, enough airspeed was not obtained to be able to clear the tree row. Once out of ground effect, a stall occurred which may have come from a downdraft + or the possibility of a spark plug fowling while idling to fix nozzle." He reported, "Upon realizing the stall, power was pulled back + had to land in grain field."
Factual narrative
On August 14, 2002, at 0850 central daylight time, a Piper PA-25-235, N7634Z, sustained substantial damage when the airplane stalled during takeoff and impacted the terrain in a wheat field near Ray, North Dakota. The commercial pilot was not injured. The 14 CFR Part 137 aerial application flight was departing from a private grass airstrip on a local flight. Visual meteorological conditions prevailed. No flight plan was filed.
The pilot reported he had returned to the airstrip in order to fix a plugged spray nozzle. He landed on the southwest runway of the grass airstrip. Once the nozzle was fixed he departed to the northeast. He reported he departed on the northeast runway due to a construction crane located at the southwest end of the runway. He estimated he departed with a 3-4 knot tailwind. He reported, "Upon liftoff, enough airspeed was not obtained to be able to clear the tree row. Once out of ground effect, a stall occurred which may have come from a downdraft + or the possibility of a spark plug fowling while idling to fix nozzle." He reported, "Upon realizing the stall, power was pulled back + had to land in grain field."
Aircraft
- Registration
- N7634Z
- Reported as
- Piper PA-25-235
- Category
- Airplane
- Serial number
- 25-3766
- Engine
- Lycoming O-540-B, reciprocating
- Damage
- Substantial damage
- Flight
- Aerial application · Part 137
- Operator
- Jeffrey T. Knox
- Registered owner
- Jeffrey Knox
- Airworthiness certificate
- Special, Restricted (Special)
- Departed
- Ray, ND
- Airport
- XXX · Private Airstrip, runway 050
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
- 40
- Certificate
- Commercial
- Airplane ratings
- Single-engine land, Multi-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2
- Flight hours
- 2,300 total · 1,200 in this make and model · 2,100 as pilot in command · 20 in the last 30 days
Weather
- Conditions
- Visual (VMC) · Day
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 N7634Z · 1
Matched to the same aircraft by N-number and date.