The fuel system of the K-airsh1p is designed to make  •possible the shifting of fuel for the purpose of trimming  the ship without interference with the normal feed of the  engine.  This is accomplished by carrying the bulk of the  fuel in two banks of storage tanks, a forward and an aft  bank, and by feeding the engines from two service tanks  which can be isolated from the rest of the system.  The  service tanks can be filled from either bank of storage  tanks without interruption to the feed of the engines.  The system can be filled through an outside connection  or through an inside connection by means of the transfer  pump.  Provisions are made for dumping fuel from aft storage  tanks and for the release of two slip tanks located under  the floor of the cabin, for the transfer of fuel from the  slip tanks to the rest of the system and for the proper  filtering of the fuel.  2. Make certain that there is ample fuel in the  service tanks at all times during flight.  3. Do not dump fuel wh-en either of the auxiliary  engines is running.  CAUTION:  1. !t take-off, always open valve in cross-connect› ing fuel line to insure against a fuel pump  failure.  -69- B. FUEL SYSTEM 