Air France crash at YYZ (Merged)

[Tree]

To: greek-freak

From the report (aircraft landed in config full):

" B. Aircraft
1 The aircraft was serviceable and all it's basic documents were up-to-date and valid.
2 The aircraft was loaded within it's operational limits.
3 The aircraft automatics comprises, for basic landing configuration if the
aircraft (i.e. with flaps extended to FULL position), the programme which
subjects actuation of all braking devices to some specific conditions. Ground
spoilers, when selected, will extend provided that either shock absorbers are
compressed at both main landing gears (the minimum load to compress one
shock absorber being 6300 kgs), or wheel speed are above 72 kts at both main
landing gears. Engine reversers, when selected, will deploy provided that
shock absorbers are compressed at both main landing gears.
Such a logics result in the lack of possibility of immediate actuation of two
mentioned above aircraft's braking devices without meeting the conditions
described.
4 In emergency, the crew is unable to override the lock-out and to operate
ground spoilers and engine thrust reversers. "

and

" 4.2 For A320 aircraft manufacturer

4.2.1 Possibility should be analysed to introduce the emergency use of ground spoilers and thrust reversers independently of meeting the criteria imposed by aircraft logics.

4.2.2 The possibility should be considered to modify the thrust reverser system to enable use of more than 71% N1 in the emergency. "

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I believe that in config full manually selecting spoilers on landing will have no effect but in config 3 there will be extension of the flight spoilers.

Caveat emptor.