A320 LOSS OF BRAKING NNC
REV.............................MAX
BRAKE PEDALS...............RELEASE
A/SKID & NWSTRG..........OFF
BRAKE PEDALS...............PRESS
MAX BRAKE PR...............1000psi
If still no braking:
PARKING BRAKE..............SHORT & SUCCESSIVE APPLICATIONS
This was introduced following the Ibiza incident 1998.Failure of normal brakes due logic disagreement in both BSCU channels(computers!)Alternate brakes fail because of frozen valve.Crew unaware of the status of their aircraft as they landed!!
ECAM message inhibited on landing(Safety recommendation V-"
It is therefore recommended to Airbus Industrie that warning messages about any change in the status of the braking system during the landing phase be immediately communicated to the crew via the ECAM"
Concerning the Cardiff incident 2003,the pilot did not in fact forget the drill as Lemurian asserts.He asked for the ASKID/NWSTRG switch to be placed off during the rollout when he realized deceleration was abnormal.Again,the safety recommendation points its finger directly at the design when it says
"It is recommended that Airbus improve the automated warnings to flightcrews concerning the loss of braking system effectiveness folllowing touchdown or rejected takeoff"(2004-82)
Pilots must know the condition of their aircraft at all times.The relay of the information from machine to man must be unambiguous and immediate.This is super-critical during takeoff/landing phase.
How this relates to the TACA crash,only time will tell.But all the runway excursions there have been Airbus.Unless you wear blinkers,it tells a story.