- Date
- August 31, 1992, 09:45 local (14:45 UTC)
- Place
- Elkhorn, WI
- Injuries
- 1 minor
- Damage
- Destroyed
- Phase of flight
- Maneuvering
- Aircraft
- N48635Grumman 164A
- Weather
- Visual (VMC) · Day
- Status
- Completed · report July 26, 1993
- Report
- Approved by Office Director
- FAA report
- 19920831040789A
- Case key
- 15245
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-in-command's inadequate compensation for wind conditions.
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
During an aerial application maneuver, the airplane experienced a collision with trees and the terrain. The pilot stated that due to a local dairy operation, he found it necessary to initiate the swath run with a crosswind to downwind (tailwind) turn toward a hillside with trees. The pilot said that he suspected that the increased ground speed and downslope airflow contributed to the accident.
Aircraft
- Registration
- N48635
- Reported as
- Grumman 164A
- Category
- Airplane
- Serial number
- 1684
- Airframe hours
- 2,709
- Engine
- P&W R-985-AN1, 450 horsepower, reciprocating
- Damage
- Destroyed
- Flight
- Aerial application · Part 137
- Operator
- Ag Aviation Services, Inc.
- Registered owner
- Ag Aviation Services, Inc.
- Airworthiness certificate
- Special, Restricted (Special)
- Last inspection
- Annual · June 25, 1992 · 111 hours before
- Destination
- NONE
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
- 47
- Certificate
- Commercial
- Airplane ratings
- Single-engine land, Multi-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, Valid Medical--w/ waivers/lim
- Seat
- Front
- Flight hours
- 1,998 total · 102 in this make and model · 1,830 as pilot in command · 104 in the last 90 days · 93 in the last 30 days · 8 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 135° at 5 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 57 °F
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 N48635 · 2
Matched to the same aircraft by N-number and date.