All changes to tower
| Date | Change | Source |
|---|---|---|
| 10 Apr 2019 | Indication of available toilet facility added | John Allen via e-mail |
| 17 Jan 2019 | 1-6: nominal added | Chris Pickford via 00013237 |
| 29 Nov 2016 | 2: frameid amended; frame info added | David Sloman via e-mail |
| 6 Mar 2010 | 1-6: frameid added | Mike Chester via 00008516 |