SA4158NM
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. Held by American Aviation INC, which holds 20 approved modifications in all. Last revised May 1, 2003. System: engine.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Cessna Aircraft Company; The Cessna Aircraft Company
- Models
- 340, 340A
- Type certificates
- 3A25, 3A25
- On this site
- Cessna 340 707 registered
- The FAA's record
- On the FAA's site
What an approved modification is
A supplemental type certificate is the FAA's approval of a change to a certified design: a new engine or propeller, avionics, an autopilot, floats, a parachute, a larger fuel tank, an ice-protection kit. The company holding it may sell the kit and the paperwork to owners of the listed models; the modification then becomes part of that aircraft's record. The FAA's list says what was approved and for which models, not how many aircraft carry it.
Source: FAA supplemental type certificates (Dynamic Regulatory System). Register counts from the FAA register of October 20, 2026.