感谢周焕然教员提出的问题。
关于副翼故障导致备份法则的描述，不正常程序中说是2对副翼，而在系统章节则说是2个副翼。空客最后确认是 2 个副翼，手册在2021年会修改。具体请参考 TechRequest 原文：
Q:
2 ailerons or 2 pairs of ailerons?
A:
In the RECONFIGURATION CONTROL LAWS FCOM DSC-27-10-40, loss of any 2 aileron will lead into ALTERNATE LAW (we have tried and confirmed it in the SIM).
Q_2(2020.07):
Has Q1 been confirmed in SIM? And if it's "2 ailerons", will the description in F/CTL L(R) INR(OUTR) AILERON FAULT be revised later?
A_2:
First of all, we would like to thank you for your valuable input that enables us to continuously enhance our Flight Ops documentation.
I can confirm that the flight control laws revert to Alternate in the case of the loss of 2 ailerons.
The information is also available in the Reconfiguration Control Laws chapter in the FCOM. The correction will be implemented in the January 2021 revision.