Re: 330/340 o'speed near miss not AF447
In the 330/340, alpha floor is inhibited above 0.53 IMN, which at 37000 feet is 166 KCAL. Doubt they got that slow.
According to the report, the message was 'alpha lock', which in the 330/340 is slat/flap related.
Desert185,
NG autopilot also disconnects with an ADR module discrepancy(s). And it has no fallback to fixed gains and flight path stability, just piloting.
If you recall the early 727, both the block 50 (and later 150) A/P would not disconnect in a situation where it really would have been desirable for it to do so. With a complete hydraulic failure the A/P remained engaged (electrically) when it in fact could exercise no control over the flight control surfaces.
A little red light with both A & B system bulbs was added right below the 'stab out of trim' amber light to warn that the A/P was engaged and either the selected A, B, or AB function was not available.
You takes your chances.
Last edited by OK465; 31st Oct 2013 at 22:11.
Reason: added title