CHI94LA166

NTSB accident investigation · Grumman G-164 · Hillsboro, ND · May 20, 1994

Accident · Serious injuriesLimited investigationFinal report
Date
May 19, 1994, 20:00 local (May 20, 1994, 01:00 UTC)
Place
Hillsboro, ND
Injuries
1 serious
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N551YGrumman G-164
Weather
Visual (VMC) · Day
Status
Completed · report December 7, 1994
Report
Approved by Office Director
FAA report
19940519011799A
Case key
9535

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's failure to maintain clearance from a tree.

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 objectManeuvering - aerial application
Object - tree(s)
Clearance - not maintainedPilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The pilot reported he was performing aerial application and he pulled up late from a swath run and impacted the top of a tree. He said the airplane was still flying but as it slowed he lost control and impacted the terrain.

Factual narrative

On May 19, 1994, about 2000 central daylight time, a Grumman G-164, N551Y, operated by Pro Air Service, Inc. was destroyed during an aerial application swath run near Hillsboro, North Dakota. The solo commercial pilot sustained serious injuries. The local, 14 CFR Part 137 flight originated about 1930. A flight plan was not filed and visual meteorological conditions prevailed.

The pilot reported he "pulled up a little late and caught the top of a cottonwood tree" which damaged the leading edge of the left wing. He wrote "the airplane was still flying for a little bit, but as it slowed down it started to go into a spin. I got the spin stopped and I was trying to dump the load, but ran out of room and hit the ground."

Aircraft

Registration
N551Y
Reported as
Grumman G-164
Category
Airplane
Serial number
116
Airframe hours
8,130
Engine
P&W R-985, 450 horsepower, reciprocating
Damage
Destroyed
Flight
Aerial application · Part 137
Operator
Pro Air Service Inc
Registered owner
Pro Air Service
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · May 5, 1994 · 8 hours before

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
22
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Center
Flight hours
450 total · 100 in this make and model · 350 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
40° at 11 knots
Visibility
15 statute miles
Lowest ceiling
None
Temperature
81 °F, dew point 55 °F
Altimeter
29.00 inHg
Observed at
FAR, 28 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.