AWO.B.CATIII.120 CS AWO.B.CATIII.120 Indications and alerts

(See AMC1 AWO.B.CATIII.121 and AMC AWO.A.ALS.110)

(a)The display of information to the flight crew, including that required to monitor the approach, flare and ground roll shall be compatible with the procedures specified in the AFM or flight crew operating manual as appropriate and with normal flight crew tasks.

(b)Any malfunction of the landing system or of the xLS facility which requires a missed approach shall be positively and unambiguously annunciated to each pilot, so that pilot action may be initiated promptly without further interpretation. (See AMC 25.1322)

(c)Notwithstanding (a) and (b), for fail-operational systems, failure warnings may be inhibited below alert height if:

(1)the failure does not preclude continuation of an automatic landing; and

(2)the failure requires no specific action by the flight crew; and

(3)Information on the occurrence of any failure warnings so inhibited is subsequently available to flight and maintenance crews.

(d)Where the capability of the aeroplane is dependent on equipment serviceability and modes selected, means shall be provided whereby the pilot can readily determine the capability at alert height (e.g. fail-operational status, ground-roll availability).

[Issue: CS-AWO/2]