Request for waivers to chapters 2, 3, 4, and 5 of this regulation (other than para 2-2) will be sent through channels to Commander, U.S. Army Aviation Center, ATTN: ATZQ-ATC-MO, Fort Rucker, AL 36362-5265. Waivers will contain an expiration date not to exceed 1 year from date of issuance. Request for renewal or extension of waivers is the responsibility of the organization initiating the original waiver request.