CHI95LA272

NTSB accident investigation · Grumman G-164 · Wadena, MN · August 13, 1995

Accident · Minor injuriesLimited investigationFinal report
Date
August 12, 1995, 20:30 local (Aug 13, 1995, 01:30 UTC)
Place
Wadena, MN
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N48611Grumman G-164
Weather
Visual (VMC) · Dusk
Status
Completed · report April 1, 1996
Report
Approved by Office Director
FAA report
19950812023469A
Case key
9989

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 inattentiveness during the reversal turn, the pilot not maintaining control of the airplane, and the stall/mush encountered by the pilot.

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 - in flightManeuvering - turn to reverse direction
Aircraft control - not maintainedPilot in commandCause
InattentivePilot in commandCause
Stall/mush - encounteredPilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - ground

Analysis

The pilot said the airplane stalled without warning during a turn around maneuver after he had just flown over a field he intended to spray. He said he was totally caught off guard by the stall event. The pilot also stated that he did not add enough power during the turn and that the airplane was mushing and shaking during the turn because it was behind the power curve.

Factual narrative

On August 12, 1995, at 2030 central daylight time (cdt), a Grumman G-164, N48611, piloted by a commercial pilot, was substantially damaged during a collision with the ground while maneuvering for a swath run. Visual meteorological conditions prevailed at the time of the accident. The 14 CFR Part 137 flight was not operating on a flight plan. The pilot reported minor injuries. The flight departed Wadena, Minnesota, at 2000 cdt.

According to the pilot's written statement on NTSB Form 6120.1/2, "...the aircraft stalled without warning..." during a turn back maneuver. The pilot continued, "I started a recovery but ran out of altitude... ." He said he had just flown over the field he intended to spray and was about two-thirds the way through the turn when the event took place. During an interview the pilot said he was totally caught off guard by the stall event. He said the control feel did not tell him of the impending stall.

An FAA Principal Maintenance Inspector (PMI) represented the NTSB on-scene. According to the PMI, the pilot told him he had not added enough power to the airplane's engine until it was mushing and shaking during the turn around maneuver. He said the pilot indicated the airplane was behind the power curve during the turning maneuver.

Aircraft

Registration
N48611
Reported as
Grumman G-164
Category
Airplane
Serial number
91B
Engine
P&W R1340, 600 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Peterson Aerial Spraying
Registered owner
Kyle J. Scott
Airworthiness certificate
Special, Restricted (Special)
Departed
64Y · MN

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
23
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Center
Flight hours
1,280 total · 700 in this make and model · 1,197 as pilot in command · 310 in the last 90 days · 100 in the last 30 days · 13 in the last 24 hours

Weather

Conditions
Visual (VMC) · Dusk
Wind
60° at 5 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
73 °F, dew point 57 °F
Altimeter
29.00 inHg
Observed at
PKD, 30 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.