A350 执行 LPV 最低高度的 RNAV APCH 不能自动落地但有 FLARE 模式

感谢周焕然教员提出的问题。

在着陆能力表中,LPV 最低高度的 RNAV 进近只能人工落地。另外 FLARE 模式是自动落地才有的模式,但在其说明中又提到适用于LPV 最低高度的 RNAV 进近。空客的解释可以理解为虽然目前不能自动落地,但未来应该可以。不过完全可以让 FLARE 模式先不适用于它啊,免得误导。具体参考 TechRequest 原文:

Q:

As we know, FLARE mode is for autoland, and RNAV(GNSS) approach with LPV minima can only apply manual landing. So can FLARE mode engage in RNAV(GNSS) approach with LPV minima?

A:

SLS LPV approaches are categorized as APPR 1 which does not include an A/LND, the minimum shall also be inserted in the BARO space of the PERF APP Page (no Radio provided).

During an SLS LPV approach LAND may not engage, however FLARE and ROLLOUT will engage in FMA but at present are of NO USE, the crew MUST DISCONNECT AP FOR LDG or AP will come disengage by itself at 50 FT.

Note: in order to perform an A/LND and use the FLARE/ROLLOUT Modes the FMA shall indicate at least one of the following capabilities:
a. LAND 1
b. LAND 2
c. LAND 3 SINGLE
d. LAND 3 DUAL

Q_2:

SLS LPV has FLARE MODE but cannot apply A/LND. Is it because that A/LND of SLS LPV is already available by aircraft but only not authorized by administration nowadays?

A_2:

Please be informed that, for now, it is not planned to develop or certify the SLS guidance mode for automatic landing on A350 aircraft.

For your information, the ECAM message #SLS AUTOLAND# is introduced as a provision for future evolution. However the SLS guidance mode cannot be used to perform automatic landing for now.

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