Just started the A320 groundschool and I have what is surely a silly question:
As an example if you have a G & B Hydraulic failure, the landing distance procedure in the QRH says to increase your landing distance by 1.6. Other systems which are affected by the hydraulic loss include loss of autobrake, loss of 3 spoilers, slats jammed and we end up in Alternate then Direct Law.
I assume that the landing distance increment of 1.6 accounts for all affected systems or do you follow the procedure for multiple failures and account for everything individually, multiplying their factors?
To sum up, is the procedure for multiple failures only used when the failures are completely unrelated and independent? e.g. G&B Hydraulic loss (factor 1.6) followed by and unrelated but unfortunate loss of anti-skid (factor 1.5) would result in a total factor of 2.4???????
I'm confused again.
CP