air ambulance

noun

: an aircraft and especially a helicopter equipped for transporting the injured or sick

Most air ambulances carry critically ill or injured patients, whose condition could rapidly change for the worse.

—Anthony A. Helbling, Flying

Life flight services of a helicopter or other air ambulance transfers are available in most major cities and offered by large tertiary, trauma, or specialty medical centers.

—Peggy A. Rossi, Case Management in Health Care