AWO.B.CATII.115 CS AWO.B.CATII.115 Excess-deviation alerts

All Weather Operations (CS-AWO) · CS-AWO · EAR revision 14 Aug 2026

Official sources: EASA Easy Access Rules (opens in a new tab)

IRImplementing rule

AWO.B.CATII.115CS AWO.B.CATII.115 Excess-deviation alerts

(a)Excess-deviation alerts shall operate when the deviation from the xLS glide path or localizer centre line exceeds a value from which a safe landing can be performed from offset positions equivalent to the excess-deviation alert, without exceptional piloting skill and with the visual references available in these conditions. (See AMC AWO.B.CATII.115(a))

(b)Excess-deviation alerts shall be set to operate with a delay of not more than 1 second from the time that the values determined in CS AWO.B.CATII.115(a) are exceeded.

(c)Excess-deviation alerts shall be active at least from 90 m (300 ft) to the DH, but the glide path alert should not be active below 30 m (100 ft).

[Issue: CS-AWO/2]

IR · AWO.B.CATII.115 — CS-AWO · ED Decision 2022/007/R · CS-AWO Easy Access Rules · EAR revision 14 Aug 2026

AMCAcceptable means of compliance

AMC AWO.B.CATII.115(a)Excess-deviation alerts

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The excess-deviation alerts should be set to operate when the xLS deviation exceeds not more than:

75 µA for the glide path; and 25 µA for the localiser.

[Issue: CS-AWO/2]

AMC · AMC AWO.B.CATII.115(a) — CS-AWO · ED Decision 2022/007/R · CS-AWO Easy Access Rules · EAR revision 14 Aug 2026

All rules in SUBPART B – APPROACH AND LANDING

Consolidated from the EASA Easy Access Rules (revision 14 Aug 2026, extracted 2 Nov 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.

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