75-07-02 CESSNA: Amendment 39-2132. Applies to Models 177, 177RG and F177RG airplanes. \n\n\tCompliance: Required as indicated, unless already accomplished. \n\n\tTo preclude separation of the foam rubber air filter seal, within 25 hours' time in service, after the effective date of this AD, accomplish the following: \n\n\tA)\tOn Models 177 (Serial Numbers 17702040 through 17702220); 177RG (Serial Numbers 177RG0433 through 177RG0625); and Model F177RG (Serial Numbers F177RG0093 through F177RG0122) airplanes, remove the air filter seal attached with double-backed adhesive tape and replace with a new P11-0766 air filter seal using EC1300LP adhesive in accordance with Cessna Service Letter SE 75-3, dated January 24, 1975, or later revision. \n\n\tB)\tOn Models 177 (Serial Numbers 601 and 17700001 through 17702039); 177RG (Serial Numbers R177RG0001 through 177RG0442); and F177RG (Serial Numbers F177RG0001 through F177RG0092) airplanes, visually inspect the air filter for the date of manufacture and on those air filters manufactured between November 1, 1973, and November 1, 1974, replace the air filter seal in accordance with Paragraph A above. \n\n\tC)\tAny alternate method of compliance with this AD must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region. \n\n\tThis amendment becomes effective March 26, 1975.