NORMAL OPERATIONS
TAXI IN
A318/A319/A320/A321
FLIGHT CREW TRAINING MANUAL
BRAKE FANS
Applicable to: ALL
The use of brake fans could increase oxidation of the brake surface hot spots if brakes are not thermally equalized, leading to the rapid degradation of the brakes. For this reason, selection of brake fans should be delayed until approximately 5 min after touchdown or just prior to stopping at the gate (whichever occurs first). Selecting brake fans before reaching the gate allows avoiding blowing carbon brake dust on ground personal.
BRAKE TEMPERATURE
Criteria: SA
1 Applicable to: MSN 0045-2907, 3271-3305, 3344, 3551, 3620-3687, 3822-3918, 3970, 4020-4052
If there is a significant difference in brake temperature between the wheels of the same gear, when reaching the gate, this materializes a potential problem with brake and a maintenance action is due e.g. if one wheel reaches the limit temperature of 600 °C while all others wheels brakes indicate less than 450 °C, this indicates that there is a potential problem of brake binding or permanent brake application on that wheel. Conversely, if one wheel brake is at or below 60 °C whereas the others are
beyond 210 °C, this indicates that there is a potential loss of braking on that wheel. Selecting brake fans before reaching the gate allows avoiding blowing carbon brake dust on ground personal. If brake temperature is above 500 °C with fans OFF (350 °C fans ON ), use of the parking brake, unless operationally necessary, should be avoided to prevent brake damage.
If one brake temperature exceeds 900 °C, a maintenance action is due.
The MEL provides information regarding brake ground cooling time, both with and without brake fans .
BRAKE TEMPERATURE
Criteria: K2113, P3341, SA
2 Applicable to: MSN 3130-3212, 3326-3340, 3367-3498, 3557-3619, 3752-3792, 3955, 4002-4009, 4078
If there is a significant difference in brake temperature between the wheels of the same gear, when reaching the gate, this materializes a potential problem with brake and a maintenance action is due. e.g. if one wheel reaches the limit temperature of 600 °C while all others wheels brakes indicate less than 450 °C, this indicates that there is a potential problem of brake binding or permanent brake application on that wheel. Conversely, if one wheel brake is at or below 60 °C whereas the others are
beyond 210 °C, this indicates that there is a potential loss of braking on that wheel. Selecting brake fans before reaching the gate allows avoiding blowing carbon brake dust on ground personal. If brake temperature is above 500 °C with fans OFF (350 °C fans ON ), use of the parking brake, unless operationally necessary, should be avoided to prevent brake damage.
If one brake temperature exceeds 800 °C, a maintenance action is due.
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