- Date
- December 31, 2020, 17:00 local (Jan 1, 2021, 00:00 UTC)
- Place
- Riverside, UT
- Injuries
- 4 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N1571APiper PA-20-135
- Defining event
- Landing-landing roll: Powerplant sys/comp malf/fail
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- Investigation class
- Class 4 - Basic report with no Prelim publish
- NTSB office
- Western Pacific Region
- Case key
- 102492
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 failure of the throttle control during a landing roll, which resulted in a loss of control and collision with a fence.
Findings · 3
NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.
Sequence of events
The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.
Analysis
The pilot reported that, following a “smooth” landing, he reduced power, but the throttle control broke and the engine advanced to full power. The pilot immediately placed the mixture control in the lean position, but the airplane overran the runway onto a road. The left wing of the airplane subsequently contacted a fence, the airplane rotated left 180° and impacted a fencepost before it came to rest. The right main landing gear collapsed, and the airplane sustained substantial damage to the wings.
Aircraft
- Registration
- N1571A
- Reported as
- Piper PA-20-135
- Category
- Airplane
- Serial number
- 20-787
- Built
- 1951
- Airframe hours
- 4,689.8
- Engine
- Lycoming O-320 A1A, 140 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Airworthiness certificate
- Standard, Normal
- Last inspection
- 100 hour · August 20, 2020 · 22 hours before
- Departed
- GNG · Gooding, ID
- Destination
- Same as departure
- Flight plan
- VFR
- Airport
- PRIVATE · Private, runway 17, 2,000 × 30 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
- 30
- Injuries
- None
- Certificate
- Commercial
- Airplane ratings
- Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 3, Without waivers/limitations
- Last flight review
- March 5, 2020
- Seat
- Left
- Restraint
- 4-point
- Flight hours
- 338.7 total · 40.2 in this make and model · 286.1 as pilot in command · 58.8 in the last 90 days · 36.6 in the last 30 days
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 10° at 6 knots
- Visibility
- 3 statute miles
- Temperature
- 27 °F, dew point 23 °F
- Altimeter
- 30.14 inHg
- Observed at
- KLGU, 13 nm away
- METAR
- KLGU 312353Z AUTO 01006KT 3SM BR OVC030 M03/M05 A3014 RMK AO2 T10281050
Docket · 2
The files NTSB released with the investigation on September 1, 2021, on NTSB’s docket system: statements, records, photos and specialists’ reports. 5.3 MB in all.