Instructions: Activation groups 1 through 4 for lights and VTOL down for flaps.

(Notes: I have one with the smoke trails mod to try to simulate the fire retardant, Link to that version here \/ https://www.simpleplanes.com/a/tCW5Ob/P2-Neptune
Clickable link in the comments as well.)

The Lockheed P-2 Neptune (designated P2V by the United States Navy prior to September 1962) was a Maritime patrol and anti-submarine warfare (ASW) aircraft. It was developed for the US Navy... y by Lockheed to replace the Lockheed PV-1 Ventura and PV-2 Harpoon, and being replaced in turn with the Lockheed P-3 Orion. Designed as a land-based aircraft, the Neptune never made a carrier landing, although a small number of aircraft were converted and deployed as carrier launched stop-gap nuclear bombers which would have to ditch or recover at land bases. The type was successful in export and saw service with several armed forces.
P-2/P2Vs have been employed in aerial firefighting roles by operators such as Minden Air Corp and Neptune Aviation Services (which is the paint scheme I chose) And it can carry 2,080 gal (7,874 l) of retardant and has a service life of 15,000 hours. Neptune proposes to replace them with British Aerospace 146 aircraft which are estimated to have a service life of 80,000 hours and carry upwards of 3,000 gallons of retardant.
Info from Wikipedia...   read more