Guidance concerning Air Navigation in and above the NAT MNPSA
if IFR first
if VFR first
Specify in item 15 the point(s) where the change of flight rules is planned. Type of Flight Insert one of the following letters to denote the type of flight:
S N G M X
if Scheduled Air Service; if Non-scheduled Air Transport Operation; if General Aviation; if Military; if the type of flight does not match any of the predefined categories.
It is imperative that the letter ‘X’ is used when the type of flight does not match any of the predefined categories. Failure to do so causes the message to fail processing.
Field 9: Number and Type of Aircraft and Wake Turbulence category
Number of Aircraft Insert the number of aircraft only when that number exceeds one, using two digits (e.g. 03). Type of Aircraft Insert the appropriate designator as specified in ICAO DOC 8643 – “Aircraft Type Designators”, OR
If no designator has been allocated insert ZZZZ and specify in Item 18 the type of aircraft, using the “TYP/…” sub-field and free text.
In the case of flight plans covering more than one aircraft type, insert ZZZZ and specify in Item 18 the types of aircraft using the “TYP/…” sub-field with the format used in Item 9 (e.g. TYP/02F18 KC135 ).
Including the number of aircraft as 1 or 01. ICAO DOCs clearly state that the number of aircraft shall only be specified when there are more than 1.
Inserting a space between the number and type of aircraft. The correct format is to specify the number and type as a single group, any intervening blanks will cause a syntax error.
Wake Turbulence Category
Insert an oblique stroke followed by one of the following letters to indicate the wake turbulence category of the aircraft:
HEAVY, to indicate an aircraft type with a maximum certificated take-off 136 000 kg (300 000 lb) or more;
MEDIUM, to indicate an aircraft type with a maximum certificated take-off weight of less than 136 000 kg (300 000 lb) but more than 7 000 kg (15 500 lb);
LIGHT, to indicate an aircraft type with a maximum certificated take-off weight of 7 000 kg (15 500 lb) or less.
NAT Doc 007