I am unsure what speed intervention is:
If engaging in speed intervention:
- During a path decent with flaps up on an idle leg, VNAV switches to VNAV speed
- With flaps down, VNAV reminds in VNAV PTH
-When a geometric path leg is active, VNAV remains in VNAV PTH
- While a vertical angle leg (GP xxx on RTE LEGS page) is active, VNAV remain in VNAV PTH
- Benefits of using speed intervention:
- Gives MCP speed control like on an ILS
- Easier to comply with ATC speed restrictions
- Easier to make corrections to final approach speed if wind additive changes
What is the difference between 'VNAV' and 'VNAV speed' is it another word for autothrottle?
Why is it when using speed intervention it is easier to comply with ATC speed restriction and easier to make correction to final approach speed?
Thanks