FAQ n.136689

Standalone changes to ICA: could it be clarified which are the expectations in terms of DOA’s involvement activities before release of the standalone changes to the ICA (review by compliance verification engineer, other Office of Airworthiness involvement, etc.)?


When subject to 21.A.90C(c) the stand-alone changes to ICA do not need to be processed as changes to the type design under Part 21/Subpart D, the expected DAH/DOA procedures should still address:

  • preparation;
  • proof reading;
  • verification of technical consistency;
  • verification of feasibility (when relevant); and
  • approval for release.

In such a case, a CVE or airworthiness function involvement is not required. (see GM1 21.A.239(a), para. 3.1.5, Note).

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