| GRE-74-21/Rev.1 | Draft terms of reference for the visibility, glare, and levelling informal group: revision 1 | |
| GRE/2015/31 | Proposal to amend the requirements of Regulation No. 48 on tell-tales indicating a failure | |
| GRE/2015/34 | Proposal for a Supplement to Regulation No. 48 | |
| GRE/2015/34 | Proposal for a Supplement to Regulation No. 48 |