When completing Item 9 of the ATC flight plan, if there is no appropriate aircraft designator, the following should be entered:
Domanda 84, Flight Planning and Monitoring - ATPL - Airline Transport Pilot license
| The most descriptive abbreviation |
| 'XXXX' followed by an entry in Item 18 |
| 'NONE' |
| 'ZZZZ' followed by an entry in Item 18 |
