AMC9 SPO.OP.110 Aerodrome operating minima — aeroplanes and helicopters

EFFECT ON LANDING MINIMA OF TEMPORARILY FAILED OR DOWNGRADED GROUND EQUIPMENT — COMPLEX MOTOR-POWERED AIRCRAFT

(a) General

These instructions are intended for both pre-flight and in-flight use. It is, however, not expected that the pilot-in-command would consult such instructions after passing 1 000 ft above the aerodrome. If failures of ground aids are announced at such a late stage, the approach could be continued at the pilot-in-command’s discretion. If failures are announced before such a late stage in the approach, their effect on the approach should be considered as described in Table 15 and, if considered necessary, the approach should be abandoned.

(b) Conditions applicable to Table 15:

(1) multiple failures of runway/FATO lights other than those indicated in Table 15 should not be acceptable;

(2) failures of approach and runway/FATO lights are acceptable at the same time, and the most demanding consequence should be applied; and

(3) failures other than ILS or MLS affect the RVR only and not the DH.

Table 15

Failed or downgraded equipment — effect on landing minima

Failed or downgraded equipment	Effect on landing minima
	Type B	Type A
Navaid standby transmitter	No effect
Outer marker (ILS only)	No effect if the required height or glide path can be checked using other means, e.g. DME fix	APV — not applicable
		NPA with FAF: no effect unless used as FAF
		If the FAF cannot be identified (e.g. no method available for timing of descent), NPA operations cannot be conducted
Middle marker (ILS only)	No effect	No effect unless used as MAPt
RVR Assessment Systems	No effect
Approach lights	Minima as for NALS
Approach lights except the last 210 m	Minima as for BALS
Approach lights except the last 420 m	Minima as for IALS
Standby power for approach lights	No effect
Edge lights, threshold lights and runway end lights	Day — no effect Night — not allowed
Centre line lights	Aeroplanes: No effect if flight director (F/D), HUDLS or auto-land; otherwise RVR 750 m Helicopters: No effect on CAT I and SA CAT I approach operations.	No effect
Centre line lights spacing increased to 30 m	No effect
TDZ lights	Aeroplanes: No effect if F/D, HUDLS or auto-land; otherwise RVR 750 m Helicopters: No effect.	No effect
Taxiway lighting system	No effect