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Old 10th Jan 2020, 07:54
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sky9

Keeping Danny in Sandwiches
 
Join Date: May 1999
Location: UK
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Anyone who flew in the 1960's and 70's was very much aware of the efforts made on the BAC 1-11 to avoid stalls with its doubled up stick shake and aggressive stick push. As someone who flew many thousands of hours on that aircraft and the 737-200 it was obvious there was a difference in philosophy between the CAA and the FAA when it came to certification in the area of stalls. For years the ARB wouldn't certify the B727 because of that issue.

DP Davis' book Handling the Big Jets second edition published in 1968 by the British ARB explained what he referred to as a typical stick pusher installation on page 136 then went on to describe the BAC1-11 system with it 4 "stall warning sensors" (angle of attack indicators) that was fitted to the aircraft after its deep stall crashes during certification.

The best thing the FAA could do is get out their copy of the book read it then tell Boeing take out MCAS and fit an updated version of the BAC1-11 system on the Max.

On a personal note there was a major difference in handling pitch on the BAC1-11 and the B737. On the 1-11 pilots used the elevators to control pitch then trimmed out with the stabiliser trim. The 737 has a far larger stabiliser compared to its elevators and all pilots I ever flew with learned to fly the aircraft by blipping on the trim switch effectively using elevators almost exclusively only during take off approach and landing.
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