- Date
- May 9, 1985, 13:00 local (20:00 UTC)
- Place
- Colusa, CA
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Initial climb
- Aircraft
- N8929QRockwell S-2R
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- FAA report
- 19850509016319A
- Case key
- 24723
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
During an ag flight, the eng began to severly backfire & lose power. The plt attempted to make a forced ldg on the nearby duster airstrip but had insufficient altitude to be properly aligned with the rwy. The acft overan the edge of the end disclosed that its #9 cyk exhaust valve boss had broken causing valve action to stop. The eng had been operated for 30 hrs since receiving a moh.
Aircraft
- Registration
- N8929Q
- Reported as
- Rockwell S-2R
- Category
- Airplane
- Serial number
- 2354R
- Engine
- P&W R1340 SERIES, 600 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Aerial application · Part 137
- Registered owner
- Robert B. Caldwell
- Airworthiness certificate
- Special, Restricted (Special)
- Last inspection
- Unknown · April 6, 1985
- Departed
- Colusa, CA
- Destination
- Colusa, CA
- Airport
- Closby, runway 18, 2,600 × ft, grass/turf
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
- Center
- Flight hours
- 8,000 total · 2,000 in this make and model · 8,000 as pilot in command · 150 in the last 90 days · 80 in the last 30 days · 8 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 180° at 5 knots, gusting 7
- Visibility
- 30 statute miles
- Lowest ceiling
- None
- Temperature
- 64 °F, dew point -0 °F
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.