Text in force at CAR3R-8: from CAR3R-0, effective 15 May 1956. OCR text
Fuel systems shall be so arranged as to permit any one fuel pump to draw fuel from only one tank at atime. Gravity feed systems shall not supply fuel to any one engine from more than one tank at a time unless the tank air spaces are interconnected in such a manner as to assure that all interconnected tanks will feed equally. (See also § 3.439.)