All changes to tower
| Date | Change | Source |
|---|---|---|
| 16 Jun 2016 | fr1A: material amended, date,maker confirmed | Robin Heppenstall via e-mail |
| 27 May 2016 | 1-6: frameid added; frame info added | David Sloman via e-mail |
| 26 Jan 2004 | Thursday PN added | John Savage - Tower Captain via e-mail |