- Date
- June 28, 1991, 20:15 local (Jun 29, 1991, 01:15 UTC)
- Place
- Clinton, MN
- Injuries
- 1 uninjured
- Damage
- Destroyed
- Phase of flight
- Maneuvering
- Aircraft
- N9599PPiper OA25-235
- Weather
- Visual (VMC) · Day
- Status
- Completed · report September 28, 1992
- Report
- Approved by Office Director
- FAA report
- 19910628025149A
- Case key
- 14857
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's failure to maintain adequate control of the aircraft while maneuvering in aerial application operations. Related factors are wake turbulence and low altitude.
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 pilot was performing 'tandem' aerial application operations with another pilot. He reported as he approached the field for a pass he was unable to see the marker flag in time to make a 'proper pass.' He performed a go around and re entered a left pattern for the field. The pilot stated he was in straight and level flight when he 'encountered a wingtip vortice which rolled me into a steep right bank. I was unable to recover before impacting the ground.'
Aircraft
- Registration
- N9599P
- Reported as
- Piper OA25-235
- Category
- Airplane
- Serial number
- 25-7657006
- Airframe hours
- 2,096
- Engine
- Lycoming O-540-B2C5, 235 horsepower, reciprocating
- Damage
- Destroyed
- Flight
- Aerial application · Part 137
- Operator
- Sprayers Inc.
- Registered owner
- Sprayers Inc.
- Airworthiness certificate
- Special, Restricted (Special)
- Last inspection
- Annual · April 15, 1991 · 55 hours before
- Departed
- NONE · Graceville, MN
- Destination
- NONE · Clinton, 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
- 26
- Certificate
- Commercial
- Airplane ratings
- Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, Valid Medical--w/ waivers/lim
- Seat
- Center
- Flight hours
- 509 total · 135 in this make and model · 454 as pilot in command · 65 in the last 90 days · 49 in the last 30 days
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 230° at 2 knots
- Visibility
- 15 statute miles
- Lowest ceiling
- None
- Temperature
- 84 °F
- Altimeter
- 29.00 inHg
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.