这是一个经常被问到的问题，答案很简单也很明确：可以。
燃油和发动机系统都能探测燃油泄漏，分别触发 FUEL 和 ENG 开头的警告：
FUEL LEAK SUSPECTED
ENG 1(2) FUEL LEAK SUSPECTED
但如果是确认是发动机泄漏，依据 ENG 1(2) FUEL LEAK SUSPECTED 警告的触发条件“A fuel leak between the fuel flow meter and the combustion chamber is detected”，说明泄漏部分在 fuel flow meter 的下游，也就是在 HP Fuel Valve 的下游。
按程序关车之后，HP Fuel Valve 关断，下游的泄漏就停止了，此时可以进行平衡。所以在燃油泄漏程序中，只有在机翼油箱泄漏的情况下，有文字要求“WINGS: DO NOT BALANCE”。这一点，也通过 TechRequest 得到了空客的证实。
TechRequest 原文：
Q:
In FUEL LEAK SUSPECTED and [ABN] FUEL LEAK procedure, if leak is comfirmed from wing tank, there's a reminder WINGS : DO NOT BALANCE. If comfirmed from eng, no this reminder. And in FCTM PR-AEP-FUEL C, the description of balance is also only about wing leak, "When a wing leak is confirmed, a fuel imbalance can appear, and the flight crew must not balance the wings."
So can we balance fuel if leak is comfirmed from eng?
A:
Airbus reviewed your query, and we would like to provide CSC with the following information:
We confirm that the flight crew can balance the fuel in the wing tanks if the engine is confirmed to be the cause of fuel leak.