Autopilot question (747)

[AWACS 12]

Hi all,I was on the ILS runway 6R approach into Kansai Intl. when a pesky AI plane was on the runway, I went ahead and disconnected the autopilot and added GA thrust at around 250 ft. Anyway when I was trying to use the autopilot again, the APP switch wouldn't come undone, so I was unable to use the autopilot at all. Does anyone know what the procedures are for using the autopilot again after a missed approach?Jeff

[Guest aarskringspier]

>Hi all,>>I was on the ILS runway 6R approach into Kansai Intl. when a>pesky AI plane was on the runway, I went ahead and>disconnected the autopilot and added GA thrust at around 250>ft. Anyway when I was trying to use the autopilot again, the>APP switch wouldn't come undone, so I was unable to use the>autopilot at all. Does anyone know what the procedures are>for using the autopilot again after a missed approach?>>JeffTUrn off the flight director then turn it back on should reset it.

[AWACS 12]

Oh, that simple huh? Lol Thanks,Jeff

[Guest Hawkeyeted]

I think you need to turn of BOTH the Capt and F/O's FD (assuming you had both on to begin with...) in order to reset the APP function. Additionally, you have to have both FD's on for Cat II/III Autolandings.

[Guest pdieguez]

Is this how the real thing work?? I mean, too much work to do on a missed approach...ThanksPaulo

[Guest Hawkeyeted]

Yes, this is how the real deal works. Both the Pilot and F/O need to turn off their FD's to reset the APP function. This is especially true for a G/A while in Autoland. Resetting the FD's resets the autopilot computers for the next approach. Each FD drives its respective A/P computer while in Autoland because each computer is isolated from the next.