Originally Posted by
CONF iture
With that type of equipment installed, do you know if the ECAM requesting lo lower the gear in case of brake temp above 300C is still active, or the corresponding brake temp value is higher for such an ECAM ?
My notes don't give a temperature threshold i'm afraid, after all we fix them, we don't fly them! FCOM might be usefull there. As with most Airbus systems, it will only give a fire message if both loops, and therefore all four LG Bay detectors detect an overheat in their area (nothing to do with brake temp). The FDU microprocessor will then filter the data with AND logic and if all channels indicate fire, a message will pass to the FWC and on to the EWD. MLG fire will also call for a speed limit of 250kts (to enable gear to be dropped), Gear down, ATC notify, and LANDASAP.
The only info I have relating to brake temp as a system states that all brake temp info is sent to the BTMU for each braked pair. This amplifies the signal to the BSCU and the info is then displayed on ECAM via the normal routes. If brake fans are fitted (Virgin don't) then the BSCU will also light up HOT on the BRK FAN PB/SW. The brake fans only run on ground with inputs from the switch and the LGCIU in command.