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737 Fail Operational Autoland.

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737 Fail Operational Autoland.

Old 16th Oct 2020, 20:31
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Join Date: Mar 2005
Location: UK
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737 Fail Operational Autoland.

Can someone explain what the difference is between LAND3 and LAND2 annunciations in a 737NG with fail operational autoland?

I had wrongly assumed that >LAND2< meant a degradation of capability from Fail Operational to Fail Passive, however the QRH states the following...[Fail Operational] Autoland and rollout may be accomplished with either ASA LAND 3 or LAND 2 displayed. There is NO CHANGE to minima with autoland status advisory message NO LAND 3, or ASA LAND 2 displayed.

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