Originally Posted by EXDAC (Post 11653485)

Autoland crosswind limits are typically much lower than manual landing limits. However, I don't know of any autoland system that does not establish runway alignment before flare starts. Are there any?

Sperry/Honeywell systems typically enter ALIGN mode at 150 ft RA and FLARE mode at 50 ft RA. If a pilot always handles a crosswind differently than autoland how do they build confidence that autoland will actually work at the crosswind limit?

Originally Posted by 733driver (Post 11653506)

The 737;Classic auto-lands with full crab. Pilot disconnects autopilot upon MLG touchdown and de-crabs before NLG touchdown.

Originally Posted by EXDAC (Post 11653513)

Interesting, thanks. All the systems I worked on had automatic nose lowering and roll-out mode. I would think the transition from a full crab touchdown to manual alignment, nose lowering, and rollout wiould be quite "uncomfortable". What RVR and DH is that system approved for?

Originally Posted by punkalouver (Post 11564527)

I find this quote from the report interesting:

"CL-604 Operating Manual The manufacturer’s Operating Manual (OM) stated in ‘NORMAL PROCEDURES, Approach and Landing’ that VREF+X is calculated by adding a wind correction of ‘half steady state crosswind plus all gust (regardless of direction). Maximum correction is + 20 KIAS’ to the VREF. For the reported wind of from 300° at 13 kt gusting 25 kt, and a VREF of 123 kt, this equates to a VREF +X of 142 kt".

On most airliners, it has traditionally been half(or a third) the steady state headwind plus all of the gust.

Anybody seen this before on other aircraft?

Originally Posted by Uplinker (Post 11654890)