- Date
- April 17, 1989, 09:15 local (16:15 UTC)
- Place
- Grangeville, ID
- Injuries
- 1 minor
- Damage
- Substantial damage
- Phase of flight
- Initial climb
- Aircraft
- N4340SAir Tractor AT-301
- Weather
- Visual (VMC) · Day
- Status
- Completed · report January 22, 1991
- Report
- Approved by Office Director
- FAA report
- 19890417008239A
- Case key
- 40998
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
A partial power loss due to a blower failure. A factor related to the accident was the soft field condition.
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
A partial power loss occurred drg initial climb. The plt jettisoned his load & landed in a soft field about 3/4 mi from the rwy, where the acft nosed over. A fire erupted, which self-extinguished minutes later. The operator rprtd that a 10 inch drop in manifold pressure had occurred & that a suspected blower failure was the reason for the power loss.
Aircraft
- Registration
- N4340S
- Reported as
- Air Tractor AT-301
- Category
- Airplane
- Serial number
- 301-0020
- Airframe hours
- 5,745
- Engine
- P&W R-1340-AN-1, 600 horsepower, reciprocating
- Damage
- Substantial damage
- Fire
- On-Ground
- Flight
- Aerial application · Part 137
- Operator
- Thomas Hill, doing business as Grangeville Air Service, Inc.
- Registered owner
- Grangeville Air Service Inc
- Airworthiness certificate
- Special, Limited (Special)
- Last inspection
- Annual · November 28, 1988 · 72 hours before
- Airport
- Idaho County, runway 7, 4,800 × 60 ft, asphalt
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
- 33
- Certificates
- Flight instructor, Commercial
- Airplane ratings
- Multi-engine land, Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, Valid Medical--w/ waivers/lim
- Seat
- Center
- Flight hours
- 2,052 total · 38 in this make and model · 1,952 as pilot in command · 75 in the last 90 days · 42 in the last 30 days · 1 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 45° at 2 knots
- Visibility
- 15 statute miles
- Lowest ceiling
- 2,500 ft broken
- Temperature
- 45 °F
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.