Lasso flew to the Mammoth-Yosemite airport to drop excess gear (weight) and returned to the incident site at approximately 10,500’. Due to the warm temperature and low barometric pressure, the aircrew were reporting a density altitude (DA, pressure altitude adjusted for non-standard temperature. The higher the DA, the less aircraft performance) of 12,948’, just 52’ below their 13,000’ service ceiling.
Lasso was able to lower their medic to the subject location, then departed the area to burn some fuel (weight) while the subject was assessed and packaged for the hoist. Lasso was able to retrieve their medic and the subject, and they were transported to the Mammoth-Yosemite airport, and the subject was transferred to the care of Mono County medics, and transported to Mammoth Hospital.
Despite darkness, Lasso returned to the incident site twice more to hoist the subject’s companions, one who also had a significant injury. The subject’s injuries, while serious, turned out to be less serious than initially reported, with a fractured patella and various scrapes and contusions.
All field team members returned to base for debriefing, and at 2233, the call was terminated.
IC: Hansen/Pelichowski Ops Leader: Beck Responders: Bush, Buchanan, Torrence, Quiring, Senior, Patterson, Thompson, Zila, Wallace, Endo, Firer, Kaufman, Creager, Cucura, Cowan, and Knight.