Lock & Key Navajo

Piper PA-31-325CR Lock & Key Navajo    ***SOLD***$625,000


General Info
Make: Piper Registration Number: N73LK
Model: PA-31-325CR Serial Number: 31-7912123
Model Year: 1979 Engines: TI0-540 / LTIO-540
Location: Trenton-Robbinsville (N87) Gear: Retractable (electric)
    Props: Constant Speed
Beautiful Lock & Key recently renovated Navajo!  Full glass panel, leather interior, air conditioning, lavatory.    Immaculate condition!
Logbook Time
Total Time: (Hours since New) 4100 Log books
Engines: Since Major Overhaul
L - 50
R - 50
Props:  Since Major Overhaul

L - 50
R - 50


Maintenance Information  
Annual Due:
June 2014
IFR Certification Due: July 2015
AD's Complete: Yes
Damage Hitory:

Right wing impacted during towing

Type of Engine Overhaul: Field overhaul by Signature Engines
  • Overhauled engines by Signature to new limits with center lube camshafts
  • New motor mounts & engine mount system electro-coated
  • New turbo chargers & intercoolers
  • New wastegates and controllers
  • New iridium plugs
  • New ignition harnesses
  • New oil & fuel line hoses
  • New Skytech high-speed starters
  • New alternators
  • New engine control cables
  • New de-icing boots
  • New fuel bladders
  • New Gami fuel injectors
  • Inside engine cowling painted with Alumigrip paint
  • Powder-coated engine mounts and baffling
  • Chrome valve covers & intake tubes
  • Polished spinners, painted satin black, red tips
  • Overhauled prop governors
  • Overhauled fuel selector valves, cross feed valves, fuel shutoff valves, flap motor, cowl flap motors, inboard boost pumps, emergency fuel pumps, auto pilot servos
  • Landing gear
    • Stripped and painted with Alumigrip
    • New hardware, bearings and bushings
    • New hydraulic and brake lines
    • Overhaul power pack, all three gear actuators, and both hydraulic pumps
    • New Flight Custom III tires
    • New brake pads and rotors
  • New calibrated EDM 960 with EGT, digital amp & volt gauge, red alert for failure - approved as primary OEM gauge replacement


  • All glass panel with redundancy and power backup
  • Cabin class room
  • Lavatory
  • Air conditioning
  • Built-in oxygen
  • Air-stair
  • Tables and cabinets
  • Winglets (6% improved climb / better aileron control)
  • Prop syncro-phaser
  • Counter-rotating props
  • HID landing lights (1 million candle-watts, only 5 amps)
  • Vortex Generators Kit
  • Inner gear door removal kit (cuts cycle time in half)
  • Intercoolers
  • Emergency electrical power back up
  • Wing lockers
  • Large baggage space
4 Yr. on New C&D Electronic Heater
7 Yr. on New Eagle Fuel Tanks
5 Yr / 2000 hours on HID landing lights
  • Instrument panel painted in Alumigrip paint & clear coated, all lettering is silk screened
  • New dual Aspen 2500 system (6 screens) w/ 4 AHRS redundancy
  • New Garmin 340 audio panel
  • New Garmin GTX 330 and GTX 327 dual encoders
  • New Garmin 530W GPS/Com
  • New Garmin 430W GPS/Com
  • New Garmin GDL69A  (XM weather & radio)
  • New Avidyne EX600 moving map displaying XM weather, color radar, and TCAS traffic
  • New WX500 Stormscope
  • New 406 ELT
  • New L3 Communication Flightwatch TCAS traffic alert system
  • New Emergency battery backup for pilot’s Aspen system
  • Overhauled King KFC 200 A/P with flight director
  • CMAX Jeppesen approach plates displayed on the Aspens
  • Overhauled Bendix RS811A color radar
  • Overhauled standby attitude indicator (only steam gauge)
  • Ground clearance switch for Garmin 530 & audio panel
White & Blue with Red & Gold Trim
Paint Condition: (1 to 10, 10 being the highest) 10  ($45,000 paint job)
  • New paint and clear coated
  • New bearings & hardware on flight controls, color-coded torque seal applied to hardware
  • New stainless steel screw kit & cam locks
  • New rubber collar installed around windshield base
  • New decal set
  • Chromed pitot tubes
  • Polished handles for entrance door, wing lockers, and nose baggage area and polished refueling caps
Light tan
Fabric: Leather
Condition:  (1 to 10, 10 being the highest) 10  (New $45,000 interior)
Glass condition: New
  • New leather French seamed seats
  • New matching carpet
  • New leather-covered control wheels
  • New interior & exterior windows, new rubber seals around window inserts
  • New air conditioning compressor, expansion valves, and overhauled fan blowers
  • Completely refinished cabinetry
  • Interior plastic uniquely covered in leather & French seamed
  • Cup holders & numerous interior parts chromed
  • New rocker switches internally lit & color-coded in overhead panel
  • Polished seat rails
  • Over head panels repainted with etched lettering
Cruise Speed: 190 - 200 kts
Useful Load / Full Fuel: 1950 lbs / 800 lbs (average)
Fuel Capacity: 182 gal
Fuel burn: (average) 50 gal. first hr. / 40 gal. thereafter
Range (IFR): 550 / 850 nm
Note: Performance figures above are estimates based on standard information and may vary depending on the specific aircraft, power settings, etc.
The PA-31 Navajo was certified by the FAA in 1966 and deliveries began in 1967.  In 1971, Piper introduced the Navajo B with improvements to the PA-31 featuring air conditioning and additional storage lockers in the rear part of extended nacelles.  In 1974 Piper improved on the “B” with the introduction of the PA-31-325CR.  The Navajo CR had counter-rotating engines rated at 325 hp and production commenced in the 1975 model year.

This 1979 Navajo CR is a beautiful Lock & Key recent renovation by Mike Jones Aircraft.  Mike Jones Aircraft has specialized in Piper Navajo sales and renovations for over 30 years.  Their Lock & Key program involves an unparalleled renovation producing a Piper Navajo surpassing anything on the market today.  We invite you to see this airplane in person.








For more information or to schedule an appointment, please call Dave Mathiesen at 609.259.2400