- Date
- September 29, 1994, 17:15 local (22:15 UTC)
- Place
- Greenwood, MS
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Maneuvering
- Aircraft
- N48572Grumman G-164B
- Weather
- Visual (VMC) · Day
- Status
- Completed · report January 26, 1995
- Report
- Approved by Office Director
- FAA report
- 19940929032419A
- Case key
- 37607
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 improper decision of the pilot to execute a precautionary landing to an unprepared field due to a supercharger shaft failure.
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 noted a partial power loss and dumped his chemical load. He then attempted a precautionary landing on an unprepared field. During the landing roll the airplane nosed over. Examination of the engine revealed the supercharger shaft had failed resulting in the engine power output being reduced to that of a normally aspirated engine.
Factual narrative
On September 29, 1994, about 1715 central daylight time, N48572, a Grumman G-164B, registered to Barham Brothers Inc. crashed near Greenwood, Mississippi, while on a 14 CFR Part 137 aerial application flight. Visual meteorological conditions prevailed at the time and no flight plan was filed for the local flight. The airplane was substantially damaged and the pilot reported no injuries. The flight had originated from a local dirt road about 15 minutes earlier.
The pilot stated that when he added power the rpm increased but the manifold pressure did not. He dumped his chemical load and attempted a forced landing to a plowed field. During landing roll the airplane flipped inverted. Examination of the engine by local FAA personnel revealed that the supercharger shaft and bearing had failed.
Aircraft
- Registration
- N48572
- Reported as
- Grumman G-164B
- Category
- Airplane
- Serial number
- 83B
- Airframe hours
- 7,193
- Engine
- P&W R-985, 450 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Aerial application · Part 137
- Registered owner
- Barham Brothers Inc.
- Airworthiness certificate
- Special, Restricted (Special)
- Last inspection
- Annual · December 15, 1993 · 205 hours before
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
- 23
- Certificate
- Commercial
- Airplane ratings
- Single-engine land
- Medical
- Class 1, Valid Medical--w/ waivers/lim
- Seat
- Center
- Flight hours
- 725 total · 420 in this make and model · 622 as pilot in command · 32 in the last 90 days
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- Calm
- Visibility
- 7 statute miles
- Lowest ceiling
- None
- Temperature
- 88 °F, dew point 63 °F
- Altimeter
- 29.00 inHg
- Observed at
- GWO, 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.