CHI02LA277

NTSB accident investigation · Grumman-Schweizer G-164B · Martin, MI · September 6, 2002

Accident · No injuriesLimited investigationFinal report
Date
September 6, 2002, 10:45 local (14:45 UTC)
Place
Martin, MI
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N48417Grumman-Schweizer G-164B
Weather
Visual (VMC) · Day
Status
Completed · report May 13, 2003
Report
Approved by Office Director
Parties
FAA - Detroit FSDO
FAA report
20020906038779A
Case key
55673

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 inadequate aircraft preflight and his inability to abort the takeoff due to the obscured windshield. Contributing to the accident was the bent hopper latch and the pilot's failure to maintain directional control.

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.

Airframe/component/system failure/malfunctionTakeoff - initial climb
Aircraft preflight - inadequateGround personnelCause
Spray/dusting equipment - bentFactor
Aborted takeoff - not possiblePilot in commandCause
Window,flight compartment window/windshield - obstructedCause
Visual lookout - restrictedPilot in commandCause
Loss of control - in flightTakeoff - initial climb
Directional control - not maintainedPilot in commandFactor
Dragged wing,rotor,pod,float or tail/skidTakeoff - initial climb
Terrain condition - cropFactor
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The airplane contacted a corn crop following a loss of control during takeoff. The pilot reported that on takeoff at an airspeed of about 50 miles per hour the right aft corner of the hopper lid became unsecured. He reported that the fungicide in the hopper sprayed out and covered the windshield. The pilot reported that because of hazards on both sides and at the end of the runway he felt it was best to continue the takeoff at full power. He stated that he was able to see out the lower right corner of the windshield which was only partially obscured. The pilot stated he then lost control of the airplane and the lower left wing contacted the corn crop on the left edge of the airstrip. The airplane was turned into the crop where it came to rest. Inspection of the right rear latch on the double gang-bar type latch revealed that the latch was bent.

Factual narrative

On September 6, 2002, at 1045 eastern daylight time, a Grumman G-164B, N48417, collided with the terrain following a loss of directional control during a takeoff initial climb from a private airstrip in Martin, Michigan. The commercial pilot was not injured and the airplane was substantially damaged. The Title 14 CFR Part 137 flight was operating in visual meteorological conditions and no flight plan was filed. The local flight was originating at the time of the accident.

The pilot reported the accident occurred on the fifth aerial application flight of the day. He reported that on takeoff at an airspeed of about 50 miles per hour the right aft corner of the hopper lid became unsecured. He reported that the fungicide in the hopper sprayed out and covered the windshield. The pilot reported that because of hazards on both sides and at the end of the runway he felt it was best to continue the takeoff at full power. He stated that he was able to see out the lower right corner of the windshield which was only partially obscured. The pilot stated he then lost control of the airplane and the lower left wing contacted the corn crop on the left edge of the airstrip. The airplane was turned into the crop where it came to rest.

An inspector from the Federal Aviation Administration Flight Standards District Office in Belleville, Michigan, reported that the right rear latch on the double gang-bar type latch was not completely closed and it looked as though the latch was bent.

Aircraft

Registration
N48417
Reported as
Grumman-Schweizer G-164B
Category
Airplane
Serial number
26B
Airframe hours
10,269
Engine
Walter M601E-11, 750 horsepower, turbo prop
Damage
Substantial damage
Flight
Aerial application · Part 137
Registered owner
Benjamin I. Niswander
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · May 20, 2002 · 280 hours before
Departed
PVT · Martin, MI
Airport
Pvt Airstrip, runway 36, 2,000 × 50 ft, gravel

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
60
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Last flight review
March 17, 2001
Seat
Center
Flight hours
16,062 total · 1,783 in this make and model · 15,894 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
Variable at 5 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
72 °F, dew point 61 °F
Altimeter
30.19 inHg
Observed at
AZO, 17 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.

Other investigations on N48417 · 2

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