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Alpha Floor

Also from: α Floor

Alpha Floor is triggered by the FMGCs upon a signal from the PRIMs when:

• angle of attack exceeds a pre-determined threshold (as a function of configuration).

The A/THR activates (regardless of status or thrust lever position) when Alpha Floor is activated.

Inhibits

• engine failure with flaps extended⁽¹⁾
• engine failure with derated T/O selected
• below 100' RA at landing
• above M.53

Failures

Alpha Floor protection is lost in case of A/THR failure.

Notes

(1): With one engine TLA below 5° and the other above 5°, the system may consider the engine to be failed

Categories: Airbus A330 | Auto Flight | Flight Guidance | Auto Thrust