Cessna 180 Skywagon
Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Flight Instructor
Flight Crew Last 90 Days 30; Flight Crew Total 4700; Flight Crew Type 11
Situational Awareness; Training / Qualification
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter CFTT / CFIT; Inflight Event / Encounter Fuel Issue
Flight Crew Landed in Emergency Condition; Flight Crew Inflight Shutdown
Human Factors; Aircraft
I reviewed the cross country flight plan of my student pilot and endorsed his logbook to make a solo cross country flight from ZZZ to ZZZ1 to ZZZ2 to ZZZ3 where he planned to refuel the airplane and then continue on additional legs to ultimately return to KFLD. For some reason; he decided to not refuel at ZZZ3 but rather continue to his next destination; SSQ. The aircraft began losing power approximately 15 nm NW of this destination; and he successfully landed in a pasture. Based on departing from KFLD with nearly full tanks and flying approximately 3 hours; there should have been sufficient fuel regardless. As of this time; I am unaware whether fuel remained in the tanks; Mechanics are inspecting the fuel ventilation system to determine whether such an issue was involved.
Cessna 180 instructor pilot reported that his student had to conduct a forced landing due to fuel starvation of an unknown cause.