Radio Altimeter System

34-40-04A	Radio Altimeter System

Applicable to: -

- Flight preparation/limitations

For aircraft with the RNP AR capability, RNP AR operations are not permitted.

Maximum landing capability is CAT 2.

The F/CTL MAINTENANCE message is displayed on the STATUS SD Page.

- During cockpit preparation

If RA 1 is inoperative:

COM NAV/RAD ALTM/1 (121VU K11) C/BPull

If RA 2 is inoperative:

COM NAV/RAD ALTM/2 (121VU K12) C/BPull

- During approach

During an ILS (or MLS, or GLS) approach with AP engaged, the flight crew must closely monitor all primary flight parameters and FMA indications. An early/untimely FLARE and THR IDLE mode engagement may occur in the case of an erroneous RA height indication from the remaining RA.

In the event of an early/untimely FLARE and THR IDLE mode engagement:

Perform a go-around (thrust levers set to TOGA), or
Disconnect AP, set both FDs to OFF and continue the approach using raw data or external visual references.