- Date
- July 17, 1994, 11:20 local (18:20 UTC)
- Place
- Twisp, WA
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N144USBlack RV-4
- Weather
- Visual (VMC) · Day
- Status
- Completed · report December 2, 1994
- Report
- Approved by Office Director
- FAA report
- 19940717036959A
- Case key
- 41979
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
Proper descent rate was not maintained during approach.
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 the amateur-built experimental black RV-4 said that 'the bottom dropped out' when he was on approach for landing. The aircraft bounced back into the air after a hard landing, with its throttle and mixture control jammed. The pilot was able to fly the aircraft, which was substantially damaged during the hard landing, to another airport and successfully land.
Factual narrative
On July 17, 1994, approximately 1120 Pacific daylight time, an experimental Black RV-4, N144US, sustained substantial damage while landing at Twisp, Washington. The private pilot, who owned the aircraft and was the sole occupant, was uninjured. Visual meteorological conditions prevailed at the time of the accident. No flight plan was filed for the flight from Methow Valley Airport, Winthrop, Washington.
The pilot, who built the aircraft and had approximately 800 hours in the aircraft, stated that on short final the "bottom dropped out," and the aircraft landed hard, bending the gear and engine mount, and buckled the firewall. The wing was also damaged by impact with a fence post that was apparently near the runway threshold. The pilot stated that the aircraft ended up back in the air. He did not know if he pushed the throttle forward during the impact sequence, but he had a stuck throttle and mixture control. He said that he flew the aircraft back to Methow Valley Airport and landed successfully.
Aircraft
- Registration
- N144US
- Reported as
- Black RV-4
- Category
- Airplane, amateur-built
- Serial number
- 742
- Airframe hours
- 732
- Engine
- Lycoming O-320-E2D, 150 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Operator
- Kefton O. Black
- Registered owner
- Kefton O. Black
- Airworthiness certificate
- Special, Experimental (Special)
- Last inspection
- Annual · October 27, 1993 · 12 hours before
- Departed
- S52 · Winthrop, WA
- Airport
- 2S0 · Twisp Municipal, runway 28, 2,700 × 40 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
- 50
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- Class 3, Valid Medical--w/ waivers/lim
- Seat
- Front
- Flight hours
- 1,020 total · 525 in this make and model · 934 as pilot in command · 11 in the last 90 days · 3 in the last 30 days · 2 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 360° at 5 knots, gusting 10
- Visibility
- 20 statute miles
- Lowest ceiling
- None
- Temperature
- 90 °F
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.