- Date
- September 18, 1985, 09:30 local (14:30 UTC)
- Place
- Becker, MN
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Maneuvering
- Aircraft
- N48405Grumman 164A
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- FAA report
- 19850918045639A
- Case key
- 12890
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
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 plt reported the eng pwr dropped from 2000 to 1550 RPM during the aerial application flt. The plt increased throttleand advanced the prop with no increase in pwr. The acft then settled to ground impact and nosed over. Post accident inspection disclosed one of the prop blade counter weights had failed allowing one prop blade to travel to a high pitch (low RPM) setting while the other remained in a low pitch (high RPM) setting.
Aircraft
- Registration
- N48405
- Reported as
- Grumman 164A
- Category
- Airplane
- Serial number
- 1632
- Airframe hours
- 3,195
- Engine
- P&W R1340-AN1, 600 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Aerial application · Part 137
- Operator
- Randy Lahren
- Registered owner
- Frank Kasowski
- Airworthiness certificate
- Special, Restricted (Special)
- Last inspection
- Annual · May 2, 1985 · 339 hours before
- Departed
- NONE · Becker, 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
- Multi-engine land, Single-engine land
- Medical
- Class 2, Valid Medical--w/ waivers/lim
- Seat
- Front
- Flight hours
- 2,588 total · 1,754 in this make and model · 2,300 as pilot in command · 270 in the last 90 days
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 150° at 3 knots
- Visibility
- 10 statute miles
- Temperature
- 64 °F
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.