Yes, a Boeing 737 is fully capable of landing without engine power by becoming a very heavy, high-speed glider. If both engines fail (a "dual flameout"), the aircraft does not simply fall out of the sky; instead, it maintains forward airspeed by exchanging altitude for energy. A typical 737 has a glide ratio of approximately 17:1, meaning for every 1 mile of altitude it loses, it can travel about 17 miles forward. If the engines fail at a cruising altitude of 35,000 feet, the pilots have roughly 20 to 30 minutes and a range of about 80–100 miles to find a suitable runway. Historically, aircraft like the "Gimli Glider" (a Boeing 767) and the TACA Flight 110 (a Boeing 737-300) have successfully landed after total engine failure. While the pilots would lose engine-driven hydraulics and electricity, the aircraft is equipped with a battery backup and sometimes a standby hydraulic system to maintain flight controls. The landing would be a "deadstick" landing—meaning there is only one chance to get it right, as the pilots cannot "go around" for a second attempt.