NORMAL BRAKING - TASK SUPPORTING DATA

** ON A/C NOT FOR ALL

1. TROUBLE SHOOTING DATA of the BSCU

A. CFDS BSCU Messages decoding:

(1) Get access to the TROUBLE SHOOTING DATA (TSD) via the BSCU CHAN 1 or 2 page

on the MCDU menu page, push the line key adjacent to the CFDS indication
on the CFDS menu page, push the line key adjacent to the SYSTEM REPORT/TEST indication
on the SYSTEM REPORT/TEST page, push the line key adjacent to the L/G indication
on the SYSTEM REPORT/TEST/L/G page, push the line key adjacent to the BSCU1 or BSCU2 indication
on the BSCU CHAN 1 or BSCU CHAN 2 page, push the line key adjacent to the TROUBLE SHOOT DATA indication
on the TROUBLE SHOOTING DATA page(s), you can read complementary information concerning the fault ("snapshot" of the system environment at the time of the fault).
Trouble Shooting Data - Internal Fault Detail ** ON A/C NOT FOR ALL
Trouble Shooting Data - Internal Fault Detail ** ON A/C NOT FOR ALL
Trouble Shooting Data - External Fault Detail ** ON A/C NOT FOR ALL
Trouble Shooting Data - External Fault Detail ** ON A/C NOT FOR ALL

(2) Get access to the TSD via LAST LEG REPORT, PREVIOUS LEGS REPORT, GROUND SCANNING, GROUND REPORT or SYSTEM TEST

After a LAST LEG REPORT, PREVIOUS LEGS REPORT, GROUND SCANNING, GROUND REPORT or SYSTEM TEST selection, if a list of faults comes into view, push the line key adjacent to the prompt ">" at the right of the Class number of the fault
on the TROUBLE SHOOTING DATA page(s), you can read complementary information concerning the fault ("snapshot" of the system environment at the time of the fault)
Trouble Shooting Data - Internal Fault Detail ** ON A/C NOT FOR ALL
Trouble Shooting Data - Internal Fault Detail ** ON A/C NOT FOR ALL
Trouble Shooting Data - External Fault Detail ** ON A/C NOT FOR ALL
Trouble Shooting Data - External Fault Detail ** ON A/C NOT FOR ALL

** ON A/C NOT FOR ALL

2. SPECIFIC DATA of the BSCU

A. CFDS BSCU System data:

(1) Get access to the SPECIFIC DATA via the BSCU CHAN/SYS 1 or 2 page

on the MCDU menu page, push the line key adjacent to the CFDS indication
on the CFDS menu page, push the line key adjacent to the SYSTEM REPORT/TEST indication
on the SYSTEM REPORT/TEST page, push the line key adjacent to the L/G indication
on the SYSTEM REPORT/TEST/L/G page, push the line key adjacent to the BSCU 1 or BSCU 2 indication
on the BSCU CHAN/SYS 1 or BSCU CHAN/SYS 2 page, push the line key adjacent SPECIFIC DATA indication
on the SPECIFIC DATA page, you can push the line key to get access to four selections:

(a) SERVOVALVE DATA

This page shows the drifts in the characteristics of each Normal brake servovalve. The drift values are in psi.

(b) PIN PROGRAMMING DATA
This page shows:

the type of brake and diameter of the wheels installed on aircraft
the type of automatic braking, type 1 corresponding to the standard configuration
the status of the fans option, installed or not installed.

STRSELV: control of the nosewheel steering solenoid valve, OPEN or CLOSED, ISTRSV: nosewheel steering servovalve current in mA,
ANGCSG: nose wheel controlled angle, in degrees,
RVDTCOM: RVDT angle (Command channel), in degrees,
RVDTMON: RVDT angle (Monitor channel), in degrees,
LVDT: LVDT displacement, in mm,
SPOTCAP: CAPT steering handwheel angle, in degrees,
SPOTFO: F/O steering handwheel angle, in degrees,
NWSON or NWSOF: NWS status

(d) SYSTEM DATA

SYSTEM DATA - Detail ** ON A/C NOT FOR ALL

[Rev.8 from Aug 2018] 2026.04.04 04:31:40 UTC