- Date
- July 24, 1991, 08:15 local (14:15 UTC)
- Place
- Wendover, UT
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- NC698NWaco KNF
- Weather
- Visual (VMC) · Day
- Status
- Completed · report September 28, 1992
- Report
- Approved by Office Director
- Case key
- 41494
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
Pilot installed an improper 'o' ring which restricted normal landing gear extension and subsequent loss of control by the pilot.
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 waco knf was unable to control his aircraft when it pulled hard to the right upon landing. The aircraft ran off the side of the runway and flipped over in the soft dirt. The pilot had added an unauthorized o-ring on top of the oleo strut seal. He said that the seal was leaking and he was unable to find a replacement in the local area, while on a cross-country flight. After departure the next morning the strut failed to fully extend, which caused the aircraft to become difficult to control upon landing.
Aircraft
- Registration
- NC698N
- Reported as
- Waco KNF
- Category
- Airplane
- Serial number
- 3246
- Engine
- Kinner K-5, 100 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Operator
- William C. Phelps
- Registered owner
- William C. Phelps
- Departed
- EKO · Elko, NV
- Flight plan
- VFR
- Airport
- ENV · Wendover Field, runway 12, 8,000 × 150 ft, macadam
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 63
- Certificate
- Commercial
- Airplane ratings
- Multi-engine land, Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 3, Valid Medical--no waivers/lim.
- Flight hours
- 7,663 total · 55 in this make and model · 5,484 as pilot in command · 12 in the last 90 days · 11 in the last 30 days · 2 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Visibility
- 50 statute miles
- Lowest ceiling
- None
- Temperature
- -0 °F, dew point -0 °F