A350 燃油泄漏时不能使用 BTV

A350 燃油泄漏程序的 LIMITATION 中包括"BTV: DO NOT USE"

空客解释为,燃油泄漏时不能使用反推,但是 ROW/ROP 计算是基于使用反推的,所以结果不准。BTV 使用的距离就是是 ROW/ROP 计算的,也不准,所以不能使用。

这个在手册中也能找到描述:


TechRequest原文

Q1:

There's "BTV: DO NOT USE" in LIMITATIONS of FUEL LEAK procedure, Is it because runway of braking mechanism contaminated by leaked fuel?

A1:

The answer to your first point is provided in TR 80610206. For your convenience, you can find just below the provided answer:

In the fuel leak procedure, it is recommended to not use the reversers during landing roll.

On the other hand, the ROW/ROP computation is based on the standard use of reversers (idle reverse if runway condition/braking action is 6, max reverse otherwise). As the use of BTV is linked with the ROW/ROP computations and to avoid unexpected situation (for example: EXIT MISSED) it is recommended to not use the BTV in case of a fuel leak situation (like for other situations where the landing distance is impacted).

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