Total Loss of Braking (Normal and Alternate Braking System)

TASK 32-42-00-810-952-A
Total Loss of Braking (Normal and Alternate Braking System)

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 32-43-00-710-002	Operational Check to start the Functional Test of the Alternate Braking Automatically (flight simulated)
AMM 32-46-00-740-005	BITE Test of BSCU - Normal Braking TEST
TSM TASK 32-42-00-03	NORMAL BRAKING - TASK SUPPORTING DATA

3. Fault Confirmation
Subtask 32-42-00-710-109-A ** ON A/C NOT FOR ALL

A. Test
(1) Not applicable, the fault is evident.

4. Fault Isolation
Subtask 32-42-00-810-242-A ** ON A/C NOT FOR ALL

A. Check
(1) Do a check of the Post Flight Report (PFR) for a message related to the normal and/or the Alternate braking systems.
(2) If the PFR gives a maintenance message(s) related to the normal and/or the Alternate braking systems, read and print the related TROUBLE SHOOTING DATA (TSD) of the BSCU on the MCDU of this/these messages.
(a) Record the WORD 1 (event code) of the last TSD (time reference) 32-42-00-03 TSM TASK 32-42-00-03.

NOTE: The WORD 1 is related to a status or to a BSCU fault that can cause display of ECAM message(s).

(3) Decoding of the WORD 1 of the last TSD (Refer to the table and to the example below):

NOTE: The WORD 1 is encoded on four characters from right to left (one event per character). If there are more than four events at the same time, only the four most important events are shown.
if there are less than four events, the character(s) that is (are) not used is (are) 0 by default.

First character: code of the most important event
Second character: code the second most important event
Third character: code of the third most important event
Fourth character: code of the fourth most impotant event

(a) Table

Event Code	Event Description
1	ANTISKID FAULT with NORM BRK FAULT, AUTO BRK FAULT, NWS FAULT, cat III B inop (ALTOFF, ORAOFF)
2	NORMAL BRAKE FAULT with AUTO BRK FAULT, cat III B inop (ALT)
3	NWS FAULT with cat III B inop
4	RELEASE FAULT with AUTO BRK FAULT, cat III B inop
5	AUTOBRAKE FAULT with cat III B inop
6	BRAKE HOT
7	BSCU
8	Disagree 70 KTS
9	CAT III B INOP
A	POWER SUPPLY INTERRUPT
B	SELECTOR VALVE FAULT
C	'XX'For ECAM BRAKE TEMPERATURE INDICATION
D	ALT L RELEASE
E	ALT R RELEASE
F	MINOR FAULT

NOTE: The events are given in decreasing order of importance (Event code 1 is the most important).

Example:
0F95 means:

AUTOBRAKE FAULT
CAT III INOP
MINOR FAULT
No other event

(4) Use the event code and its related description (refer to decoding of the WORD 1) and/or the CFDS fault message(s) as an entry point into the TSM.

Subtask 32-42-00-740-205-A ** ON A/C NOT FOR ALL

B. Test
(1) Do the BITE test of the Normal braking system AMM 32-46-00-740-005.
(2) Do the operational check to start the functional test of the Alternate braking automatically (flight simulated) AMM 32-43-00-710-002.

[Rev.8 from Aug 2018] 2026.04.04 04:31:39 UTC