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NTSB Report
April 27, 2020 · Cook Sonex · N1222C
Upland, CA
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
April 27, 2020
Injury Outcomes
No injuries (1 uninjured)
Location
Upland, CA
Aircraft
Cook Sonex (2016)
Tail Number
N1222C
Injuries
None
Aircraft Damage
Substantial
NTSB Number
WPR20CA132
The pilot reported that he returned from a local flight and was practicing touch-and-go landings. During the second takeoff, as the airplane gained altitude, the engine began to gradually lose power. Unable to return to the runway, the pilot initiated a precautionary landing to a strip of gravel that is perpendicular to the runway. During the landing, the right wing was substantially damaged. The pilot reported that he did not believe there was problem with the engine, but that the problem was with the fuel-to-air mixture caused by the fuel pressure regulator not keeping a continuous constant pressure that led to the gradual loss of engine power.
NTSB Probable Cause
A gradual loss of engine power during takeoff due to the pressure regulator not keeping continuous fuel pressure which led to a precautionary off airport landing and collision with terrain.
Full Narrative
The pilot reported that he returned from a local flight and was practicing touch-and-go landings. During the second takeoff, as the airplane gained altitude, the engine began to gradually lose power. Unable to return to the runway, the pilot initiated a precautionary landing to a strip of gravel that is perpendicular to the runway. During the landing, the right wing was substantially damaged. The pilot reported that he did not believe there was problem with the engine, but that the problem was with the fuel-to-air mixture caused by the fuel pressure regulator not keeping a continuous constant pressure that led to the gradual loss of engine power.
Flight
Event TypeAccident
Event Time08:20 PDT
Nearest AirportCABLE (0nm ESE)
Runway24
Runway Length3863 ft
Runway Width75 ft
Flight Plan FiledNone
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCook Sonex
Tail NumberN1222C
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engine TypeReciprocating
Engine DetailsJabiru · 3300 · Reciprocating · 120
Seats2
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 66 · Basc · None
Conditions
ConditionsVMC
LightDaylight
Wind360° @ 3 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point68 F / 48
Altimeter29.96 inHg
Observation Time15:15
Weather SourceWFAC