Question for Cat IIIb operators

[Mork]

Hello everyone.
I would like to inquiry pilot's that operate cat IIIb capable airplanes about a few doubts.
Please consider that the landing will be acomplished in catt IIIb conditions and could you please let me know the aircraft type?

1) According to your aircraft type, are you allowed to be dispatched with the autobrakes inoperative?

2) According to your aircraft type, upto what speed are you allowed to leave the autopilot engaged during the rollout mode. (I'm interested in knowing what the exact speed is, and if the system is capable of taking you to a full stop).

Thank you for your time!!

Cheers,

Mork

[edited for clarity]

[hetfield]

1) Yes
2) No automatic disconnect

[Mork]

Hetfield,

Thanxs for the reply. I've edited the post. Could you please confirm the aircraft type you fly?


Thanks.

[hetfield]

2) until safe taxi speed

Check your PM

[Wizofoz]

B777
Yes

Safe Taxi Speed

[Mork]

Anyone else that could help me with this info?

It would be greatly appreciated.

Thanks,

Mork

[Lemper]

B744
Autobrakes required pos 3 minimum.
rvr 100/100/75
a/p disengage at safe taxi speed; a safe taxi speed in cat IIIb is generally considered to be less than 30Kts gnd speed on the runway; however, the a/p has capability to keep centerline until full stop.
Hope it helps.

[Piltdown Man]

When we were IIIb,

Yes (they were not necessarily fitted anyway) but more importantly, they were not authorised for use on autolands.

60Kts was the disconnect speed (No autobrakes = if you do nothing you'll probably end up in the localiser aerial).

Fokker 100

(We have downgraded to Cat IIIa for fleet and type commonality)

[Mork]

Lemper and Piltdown Man,

Thanks for the reply. This info definitely helps. Especially because it has info on other aircraft.


Have a great one,

Mork