Mode S
| ondervragingscode
| mode S | |
| commun. transp. avia. | Mode Select; Mode S |
| ondervragingscode | |
| commun. transp. avia. | interrogator code |
| |||
| Mode Select; Mode S | |||
|
Mode S : 10 phrases in 2 subjects |
| Communications | 8 |
| Transport | 2 |