- Date
- June 23, 1989, 07:30 local (12:30 UTC)
- Place
- Waldenburg, AR
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N9725Grumman-Schweizer G-164A
- Weather
- Visual (VMC) · Day
- Status
- Completed · report August 2, 1990
- Report
- Approved by Office Director
- FAA report
- 19890623017509A
- Case key
- 34817
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 total failure of the engine supercharger which resulted in a loss of engine power.
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 said that shortly after takeoff, enroute to perform an aerial application operation the engine lost power. An emergency ldg was attempted in a corn field which resulted in a nose over. Post accident investigation revealed the engine supercharger failed.
Aircraft
- Registration
- N9725
- Reported as
- Grumman-Schweizer G-164A
- Category
- Airplane
- Serial number
- 1235
- Airframe hours
- 3,965
- Engine
- P&W R-1340-AN1, 600 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Aerial application · Part 137
- Operator
- Sky Hawk Inc.
- Registered owner
- Sky Hawk, Inc
- Airworthiness certificate
- Special, Restricted (Special)
- Last inspection
- Annual · April 20, 1989 · 206 hours before
- Departed
- NONE · Waldenburg, AR
- Airport
- 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
- 37
- Certificate
- Commercial
- Airplane ratings
- Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, Valid Medical--no waivers/lim.
- Seat
- Left
- Flight hours
- 4,600 total · 3,700 in this make and model · 4,600 as pilot in command · 260 in the last 90 days · 125 in the last 30 days · 8 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 180° at 4 knots
- Visibility
- 7 statute miles
- Lowest ceiling
- None
- Temperature
- 81 °F, dew point 72 °F
- Altimeter
- 30.00 inHg
- Observed at
- JBR, 20 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 N9725 · 1
Matched to the same aircraft by N-number and date.