72-07-02: Selector Value Placard

72-07-02 CESSNA: Amdt. 39-1415. Applies to the following airplanes: MODELS SERIAL NUMBERS AFFECTED 172 28000 thru 29999 172 36000 thru 36999 172 46001 thru 46754 172A 46755 thru 47746 172B 17247747 thru 17248734 172C 17248735 thru 17249544 172D 17249545 thru 17250572 172E 17250573 thru 17251822 172F 17251823 thru 17253392 172G 17253393 thru 17254892 172H 17254893 thru 17256512 172I 17256513 thru 17257161 172K 17257162 thru 17258855 Compliance: Required as indicated, unless already accomplished. To reduce the possibility of engine power interruption at altitudes above 5000 feet caused by vapor formation in the fuel lines, accomplish the following: (A) Effective now, the airplane must be operated on a single fuel tank immediately upon reaching cruise altitudes above 5000 feet. (B) On or before April 1, 1972, install at the fuel selector valve applicable Cessna placards P/N's 0509021-1, 0509021-2 or 0509021-3 as provided with Cessna Service Letter SE72-7, dated March 17, 1972, or any FAA-approved equivalent placard which reads as follows: SWITCH TO SINGLE TANK OPERATION IMMEDIATELY UPON REACHING CRUISE ALTITUDES ABOVE 5000 FEET. (C) Compliance with the provisions of Paragraphs A and B is no longer required when the fuel system has been modified by the installation of applicable Cessna Kit No. SK172-31B or SK172-32 referenced by Cessna Service Letter SE72-7, dated March 17, 1972, or by the accomplishment of any equivalent method approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region. This amendment becomes effective March 25, 1972.