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AIRCRAFT SYSTEMS - e-Crew

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A330/A340<br />

FLIGHT CREW<br />

OPERATING MANUAL<br />

ENGAGEMENT CONDITIONS OF LOC AND G/S MODES<br />

<strong>AIRCRAFT</strong> <strong>SYSTEMS</strong><br />

AUTO FLIGHT - FLIGHT GUIDANCE<br />

AP/FD COMMON MODES - APPROACH<br />

When ILS capture conditions are fulfilled:<br />

‐ LOC* mode engages, and<br />

‐ G/S* mode engages (No radio altimeter validity is required with this standard for G/S<br />

engagement).<br />

The FMA displays "LOC*" or "G/S*" or both in green.<br />

Nevertheless, G/S* mode cannot engage if:<br />

‐ LOC* mode is not engaged, or<br />

‐ The aircraft is above the glide path and its trajectory does not cross the ILS G/S beam.<br />

Once the aircraft is established on LOC axis:<br />

‐ LOC mode engages<br />

‐ G/S mode engages when the aircraft is established on G/S axis.<br />

The FMA displays "LOC"and "G/S" in green.<br />

The AP/FD guides the aircraft along the G/S down to 30 ft and along the LOC during the flare<br />

and roll out.<br />

Note: G/S* or G/S may engage at altitudes that are above the radio altimeter validity but the<br />

landing capability displayed on the FMA will reflect the lack of radio altimeter validity<br />

(CAT 1) until the RAs become active. If the radio altimeters fail: LOC, G/S and AP/FDs<br />

will disengage and FDs will reengage on basic modes.<br />

RJA A330/A340 FLEET DSC-22_30-80-30-10 P 3/8<br />

FCOM ← A → 30 MAY 12

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