| In force components | 
| Number 
 | Title | Status | 
| D.91 (07/96) 
 | Transmission in encoded form of maritime telecommunications accounting information TSB circular 125 (29 June 1998) and corresponding covering note detail year 2000 issues regarding the interpretation of transmitted year data.
 | In force 
 | 
| D.91 (1996) Amendment 1 (06/98) 
 | Year 2000 issue and its impact on ITU-T D.91 application Published as a covering note
 | In force 
 | 
| 
 | 
| Superseded and Withdrawn components | 
| Number 
 | Title | Status | 
| D.91 (11/88) 
 | Transmission in encoded form of maritime telecommunications accounting information | Superseded 
 | 
| D.91 (03/91) 
 | Transmission in encoded form of maritime telecommunications accounting information | Superseded 
 |