scope:

Purpose.

This order clarifies the purpose and authority of the notes used in a TCDS and provides additional guidance and instruction for Aircraft Certification Offices (ACOs), directorate staffs, and oversight offices in the preparation of TCDS notes. It also explains the importance of a TCDS and its notes, and provides detailed instructions to assist directorates and ACOs in the preparation of correctly written TCDS notes. Responsible offices can also use the instructions in this order to correct existing errors in a TCDS.

a. This order does not change any policy established by Federal Aviation Administration (FAA) Order 8110.4, Type Certification, or other orders. This order addresses the writing of notes in a TCDS. It provides guidance to ensure that these notes do not conflict with regulations and avoid confusion and ambiguity.

b. This order provides additional instructions for Aircraft Certification Service (AIR) aviation safety engineers (ASEs) on how to write TCDS notes when preparing a TCDS. Flight Standards Service (AFS) aviation safety inspectors (ASIs) should refer to FAA Order 8620.2 for instructions related to applicability and enforcement of manufacturers' data.