PDDM Archived Transmittals Letters
The PDDM was first published in 1988 in English units. It was re-released in 1996 as a Metric document. Beginning in 2005 the document was published with dual units.
| Year | Transmittal | Portions Updated |
|---|---|---|
| 2005 | 13 | Entire manual |
| 2000 | 12 | Chapter 7 and Section 9.4.I |
| 1998 | 11 | Chapter 8 |
| 10 | Exhibit 9.38 (Standard Drawings), no PDDM Changes | |
| 1997 | 9 | Exhibit 9.38 (Standard Drawings), no PDDM Changes |
| 8 | Exhibit 8.3 | |
| 1996 | 7 | Entire manual |
| 1994 | 6 | Section 9.6 and Exhibits 9.22A to 37 |
| 5 | Section 7.4.5 and Exhibit 7.10 | |
| 4 | Section 9.4.I.2 and Exhibits 9.21 & 31 | |
| 1993 | 3 | Subsection 1.1.C |
| 1991 | 2 | Section 8.4.H.3 |
| 1988 | 1 | Entire manual |
See also the current PDDM Revision Log.