In Stock SKU: 1400

The Lockheed P2-v Neptune, Kollsman AN 5530-3 751Bk twin engine tachometer was located on the right hand side of the pilot's main instrument display panel to the right of the Rate of Climb Indicator. *NOTE - ONLY 1 AVAILABLE

The two display needles provided independant RPM information on the Nimrod's twin Wright Cyclone R-3359-8 radial 1,715 kW piston engines. The Neptune was one of the first operational aircraft fitted with both piston and jet engines. In normal operations, the twin Westinghouse J34 jet engines were run at full power to assure takeoff, then shut down upon reaching a safe altitude.

The jets were also started and kept running at flight idle during low-altitude (500-foot (150 m) during the day and 1,000-foot (300 m) at night) anti-submarine and/or anti-shipping operations as a safety measure should one of the radials develop problems.

The jet pods were fitted with intake doors that remained closed when the J-34s were not running. This prevented windmilling, allowing for the more economical running of the twin Wright Cyclone R-3359-8 radial 1,715 kW piston engines for long-endurance search and patrol operations. 


This P2-V Neptune Instrument comes complete with detailed Scale Model, Mango Wood Stand & Plaque plus Printed Fact Sheet featuring photo of instrument in aircraft cockpit.

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Your Neptune Kollsman AN 5530-3 751Bk Twin Engine Tachometer, Original Recovery Curios Warbird Collectable includes:

  • Original Warbird instrument
  • Highly detailed hand-built and airbrushed 1/72 plastic scale model of the aircraft.*
  • Hand-crafted and beautifully finished 100yr, Far North Queensland Mango Wood display stand
  • Detailed, 2-sided, printed and laminated Instrument Fact Sheet detailing aircraft and instrument
  • Removable Magnetic Display Arm

*The heavily detailed scale model is available with wheels & flaps up or down and in either Japanese, USN or RAN decaling. Upon order placement you will receive an email asking for your preferred configuration.

Your complete Recovery Curios Original Instrument Collectable is securely packed and delivery normally takes between 3 - 4 weeks approx. 

Did you fly, crew or maintain a P2-V Neptune or have a friend, colleague or family member who did? Check out our PERSONALISED ORIGINAL INSTRUMENT COLLECTABLE OPTION here.