D-604

D-604 is a Boeing CH-47 Chinook. SkyMeter has tracked 106 flights totalling 236 hours of airtime via ADS-B across 31 callsigns. Service window in our records spans 322 days. The Boeing CH-47 Chinook has a maximum takeoff weight of 50,000 lb, medium wake category.

About the Boeing CH-47 Chinook

The Boeing CH-47 Chinook is the world's most successful heavy-lift tandem-rotor helicopter, instantly recognizable by its twin counter-rotating rotors and upswept rear fuselage. First flown in 1961 and entering U.S. Army service in 1962, the Chinook was designed to carry troops and cargo in Vietnam-era combat zones, and it remains the backbone of military heavy-lift operations more than six decades later. Its tandem-rotor configuration eliminates the need for a tail rotor, allowing all engine power to go toward lift and giving the aircraft exceptional stability and payload capacity—up to 24,000 pounds of internal cargo or 26,000 pounds on external sling loads.

The Chinook's versatility extends far beyond the battlefield. Military operators use it for troop transport, medevac, disaster relief, and special operations insertion, while civilian variants serve in firefighting, logging, construction, and oil-and-gas support. The type has seen continuous upgrades through the D, F, and now G models, with modern Chinooks featuring digital cockpits, composite rotor blades, and uprated Honeywell T55 turboshaft engines producing over 4,800 shaft horsepower each. The CH-47F can cruise at 140 knots and reach altitudes above 18,000 feet, with a never-exceed speed around 170 knots—impressive for a 50,000-pound helicopter.

More than 1,200 Chinooks have been built, serving over 20 nations including the U.S., U.K., Canada, Australia, and Japan. The type holds multiple records, including the highest-altitude landing by a helicopter (29,500 feet on Siachen Glacier) and remains in production at Boeing's Philadelphia facility with orders extending into the 2030s. Its longevity is unmatched: some airframes have logged over 20,000 flight hours across multiple wars and decades of service.

SkyMeter has tracked flights across airframes and operators, with the largest observed operator.