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 [ARCHIVED] |
|---|---|---|---|---|---|
| ACTION | N New | R Revision | C Change | D Deletion |
| Release | PA | Date | Action | Change # | Nature of Change or Revision |
|---|---|---|---|---|---|
| Feb-2021 | A | Feb-2019 | C | 1 | Updated Flanges and Gaskets paragraph in response to CCR 7781. Corrected formatting issues in response to CCR 8444. Updated paragraph 2.3.9 in response to CCR 9292. |
| Feb-2019 | A | Feb-2019 | N | New UFGS. |
