Maintenance and Modifications
Versatile Aux Fuel System Will Give 737s Longer Legs
The cost of a seven-tank configuration holding 2,700 gallons of fuel will be about $3 million. This will add about 2,400 nm of range to the airplane.
Karl Lang, Long Range president and CEO, has developed an auxiliary fuel system for Boeing 737s. The “quick change” line-replaceable tank system offers considerable flexibility for operators wanting to increase the range of their legacy 737s to that of a BBJ.
Karl Lang, Long Range president and CEO, has developed an auxiliary fuel system for Boeing 737s. The “quick change” line-replaceable tank system offers considerable flexibility for operators wanting to increase the range of their legacy 737s to that of a BBJ.

Operators of Boeing 737s will soon have a new option for boosting the range of the iconic airliner, from the 737-200 to the Max series. Long Range Auxiliary Fuel, based in Hergiswil, Switzerland, which is exhibiting here at MEBA 2014 with Gainjet Aviation (Stand 700), expects FAA and EASA approval of the supplemental type certificate (STC) for system the early next year.