Description The Learjet Ferry Tank offered on this web site was originally fabricated for a one time, sole purpose, that is to extend the range of a Learjet Model 35 so that it could be outfitted to break the Around the World Speed Record. The record was broken using this tank system. The flight was committed to long over water distances along the route from Colorado to the Caribbean to Cape Verde, Africa, to Italy, Saudi Arabia, India, Philippines, Siberia, Alaska, and finally again to Colorado. The tank system worked flawlessly in every one of these nine legs, and in each of the two prior trial runs from Colorado to 300 nm off the coast of California. The tanks were designed, constructed, and installed by Clay Lacy Aviation in Van Nuys, California, a long time industry leader in corporate aviation. The assembly has been in covered, indoor storage since the record flight was successful in 1996. Total use on the tanks is only about 60 hours and eleven cycles. All components are in new condition. The only missing component is a very small control box that electrically operates the valves and pumps in the two ferry tanks. The box was made from simple aluminum sheet metal riveted into a unit about half the size of a shoe box. There were perhaps two or three toggle switches and a couple indicator lights. The box can be re-fabricated by a mechanic referencing the existing FAA certification papers and schematics. All of the tanks internal wiring remain intact with cannon plugs ready for electrical control of the tank components. The system was created in two units in order to allow their insertion through some Learjet s narrower Executive door opening. Therefore the volume of fuel is split between a 90 and a 110 gallon tank, and it will accommodate all Learjet Model 35 s. Each of the tanks are interconnected into an expansion tank for venting and pressure changes. All of the fuel is routed through the 110 gallon tank and into a plumbing connection that must be teed off between the right wing standby pump and the crossflow valve. Most of the tank installation will involve plumbing this line into the cabin where the existing fuel system can connect to the 110 gallon tank. Operation of the two tank system is explained in detail under the Operation section of this website. The 110 gallon tank is mounted in the aft baggage compartment, and nearly all the way to the wall. For those Learjets that have a false baggage wall that conceals more avionics components, the tank should not interfere with the wall (see Dimensions section in this website). As a cautionary note, if any avionics are mounted within such a false wall that emit high radio energy, such as an HF receiver-exciter, it will be important to install a lead curtain behind the aft part of the 110 gallon tank and the baggage wall. The 110 gallon tank extends forward past the edge of the divan seat mounting, and the drip pan suspends the forward end of the 110 gallon tank. The aforementioned interconnect line should be plumbed so that it enters through the cabin floor below the forward, left side of the existing divan seat support, and just inside of the upper, outermost floor seat track railing (Fuselage Frame 17 & inner LBL 18). Once the line is installed, it can be capped off flush inside the cabin and remain there even after the tanks are removed. The tanks can therefore be removed and reinstalled in a few hours after the first installation requirements are met. A small expansion tank mounts onto the forward face of the 110 gallon tank, and the 90 gallon tank is mounted on the cabin floor just forward of the expansion tank. The 90 gallon tank is secured to the floor using mounts on the seat track railings. Although the tanks were made and certified solely for the Learjet 35, it is possible it may work for multiple types of aircraft. The Learjet 20 series aircraft have similar cabin dimensions and may work provided weight and balance concerns are calculated favorably. The tanks will not work in a Learjet 36 because that aircraft already has its baggage space removed for a larger capacity fuselage tank. This assembly essentially gives a normal Learjet 35 the same range as a Learjet 36.