Objections to proposals of other NAS users will be submitted as follows:
a. Written objections to proposals must reach the appropriate DARR no later than 10 days before the FAA closing date published in the Federal Register. An Army commander may request in writing an extension of time to evaluate a rulemaking proposal. In such cases, the request must reach the DARR at least 20 days before the closing date.
b. The DARR will submit the objection to the FAA region point of contact except when the objection pertains to a proposal involving more than one region. When this occurs, the DARR will forward the objection to the DA AT&A manager for action.