UFGS 23 31 13.00 40 Metal Ducts  

History: Below is a listing of the Revisions and Changes made to this UFGS.

KEY PREPARING ACTIVITY (PA) A Army N Navy F Air Force S NASA
ACTION N New R Revision C Change D Deletion
Release PA Action Change # Nature of Change or Revision
May-2016 S R

Tri-Annual Database Maintenance (TADM) completed

Nov-2012 S R

Major revisions - Removed redundant text from Subpart 1.2; Submittal Compliance, Imperative Language, Re-organized improperly placed paragraphs from PART 1 to PART 2.

Feb-2011 S N

Renumbered to NASA fifth level; Superseding UFGS 23 31 13 with no title change