SA CATS - 91: GENERAL AVIATION AND OPERATING FLIGHT RULES
91.03.4 Air traffic service flight plan and associated procedures

1. Form of an air traffic service flight plan
(1) An air traffic service flight plan filed prior to departure must contain the following items –
(p) name, postal address, telephone and telefax number of the owner or operator of the aircraft which must be completed in field 18 of the standard flight plan form.

SOUTH AFRICAN CAA
Aeronautical Information Circular 42-1
12. Methods of filing flight plans
12. 1 . A flight plan may be filed in person, by telephone, by FAX, via the ATNS internet ‘’File2fly'' system or over the radio channels - in exceptional circumstances.