What is an AML STC?
An AML STC approval process utilizes a single approval for STC to type certificated products that were originally approved separately. For example, an AML may list a Piper P-28 along with a Cessna 150, a Stinson 108, and so on. The AML is attached to the STC (FAA Form 8110-2) and lists the type certificated products eligible for installation of the STC and their respective FAA approved documents. Whenever a type certificated product is added or a document is amended, deleted, or added, the AML is revised and approved, not the STC. The AML revision process should be established during the initial AML STC certification. Reference FAA Order 8110.4B, Type Certification, chapter 4-2(a)(4) for more guidance. The AML STC approval process develops a set of installation instructions that can be used to install equipment on several different type certificated products. These instructions include general installation guidelines and specific installation instructions. The general guidelines refere