STC SA4158NM

FAA DRS lists SA4158NM as Current · Amended, held by American Aviation Inc, for Cessna Aircraft 340 and Cessna Aircraft 340A. Recorded change: Option 1: Installation of American Aviation, Inc., intercooled engines as modified by Supplemental Type Certificate (STC) SE4159NM in accordance with American Aviation Inc. Top Drawing List TDL 063, dated July 8, 2002, or later FAA approved revision. A copy of American Aviation Inc. Approved Flight Manual Supplement (AFMS), dated May 1, 2003, or later FAA approved revision must be carried in the modified aircraft. Option 2: This installation may be installed with cowl scoops only in accordance with American Aviation Inc. Top Drawing List TDL 063, dated July 8, 2002, or later FAA approved revision. No AFMS is necessary for this option. NOTE: This approval includes Cessna 340 series aircraft previously modified per the following STC s: SA1881SW, SA2346SW, SA4241SW, SA7365SW, SA7382SW, and SA8604SW. Snapshot dated June 30, 2026.