- Date
- November 25, 1989, 16:09 local (Nov 26, 1989, 00:09 UTC)
- Place
- Chino, CA
- Injuries
- 2 serious
- Damage
- Substantial damage
- Phase of flight
- Approach
- Aircraft
- N77DRWittman Tailwind W-8
- Weather
- Visual (VMC) · Day
- Status
- Completed · report June 30, 1992
- Report
- Approved by Office Director
- FAA report
- 19891125046729A
- Case key
- 26530
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 loss of engine power for undetermined reasons.
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 of a homebuilt airplane reported a loss of engine power while on final approach. There was evidence of fuel present at the accident site. Examination of the engine revealed no evidence of an engine mechanical malfunction.
Aircraft
- Registration
- N77DR
- Reported as
- Wittman Tailwind W-8
- Category
- Airplane, amateur-built
- Serial number
- 270
- Airframe hours
- 462
- Engine
- Lycoming O-290, 125 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Registered owner
- Stephen A. Diedrich
- Airworthiness certificate
- Special, Experimental (Special)
- Last inspection
- Annual · June 6, 1989 · 19 hours before
- Airport
- CNO · Chino, runway 26, 3,856 × 150 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
- 29
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- Class 3, Valid Medical--no waivers/lim.
- Seat
- Left
- Flight hours
- 555 total · 13 in this make and model · 475 as pilot in command · 13 in the last 90 days · 9 in the last 30 days · 1 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 250° at 8 knots
- Visibility
- 4 statute miles
- Altimeter
- 29.00 inHg
- Observed at
- CNO, 1 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.