| GRB-62-08/Rev.2 | GRB subjects for the future | |
| GRB-63-03 | Amendment proposals for Regulations Nos. 9, 63 and 92 | |
| GRB-63-09 | Amendment proposals for Regulation No. 92 | |
| GRB-63-18 | EC study to enhance Regulations Nos. 9, 63 and 92 with respect to sound test requirements |