Lockheed P2V Neptune Aero Union's "Firestar" protoype version entered service in 1988.
Lockheed P2V Neptune Aero Union conversion of the aircraft involved the removal of the auxiliary jet engines and other military aircraft equipment. They then installed a retardant delivery system in the belly of the Lockheed P2V Neptune aircraft. The system consists of a 2,000 gal. tank and two automatic digitally controlled retardant drop outlets. The system permits the pilot to control the rate of flow from the tank from 50 to 700 gps.
Three additional Lockheed P2V Neptune aircraft were converted by Aero Union, bringing the number of aircraft to four.
Neptune Aviation Services operates a total of ten Lockheed P2V Neptune air tankers equipped with 2,700 gallon tanks.
Lockheed P2V Neptune military aircraft were used by the U.S. Navy, the RAF, Japan,Taiwan and numerous other U.S. allies as an anti-submarine warfare aircraft.
The first Lockheed P2V Neptune prototype flew on May 17, 1945. By March of 1947 the first production Lockheed P2V Neptune aircraft entered service with the U.S. Navy.
Even before entering service, a Lockheed P2V Neptune set a long distance flight record of 11,250 miles from Australia to the United States in 55 hours 15 minutes.
The Lockheed P2V Neptune had a reputation as an easy to maintain, solid, dependable aircraft, loved by its crews. The Lockheed P2V Neptune aircraft continued to be modified and improved throughout their service, which ended in 1985 with the retirement of the Japanese Lockheed P2V Neptune aircraft.
The Lockheed P2V Neptune series 7 was the last military version of the aircraft. It featured two piston and two jet engines. It had a top speed of 364 mph making it the fastest version produced.