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Old 28th March 2006 | 19:28
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nnc0
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From: On a good day - at sea
Clarification sought re Airbus Brake temp limitations

From the A320 FCTM

"The FCOM limits brake temperature to 300 Deg C before takeoff is started. This limit ensures that any hydraulic fluid that may come into contact with the brake units will not be ignited in the wheelwell after gear retraction. However the brake temperature should not rise above 150 Deg C (fans off) in order to respect brake energy limitation in the case of rejected take-off."

I find this confusing. Guaranteed any RTO will see brk temps exceed 150 degs so what is the point of that statement, and if they are stating that the limit for T/O = 150 deg C, why confuse us with the 300 deg limit.
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