Document ID: chunk:federal_register_of_legislation:F2025L00082:body:0:p4
Version: federal_register_of_legislation:F2025L00082
Segment Type: other
Provision Reference: 
Character Range: 7549–10290

is not equipped with an operative failure warning system for the primary attitude and heading reference systems; or
           (iii) high intensity runway edge lighting is not in operation; or
           (iv) the approach lighting system normally available at and beyond 420 m from the runway threshold is inoperative;
(f) if the approach lighting system normally available at and beyond 210 m from the runway threshold is inoperative, or the whole approach lighting system is inoperative, the greater of:
           (i) the visibility specified on the instrument approach chart, plus a value equivalent to the published length of the approach lighting system rounded up to the next 100 m; and
          Note   Rounding is upwards to the next 100 m.
 (ii) 1 500 m;
(g) the greater of either 1.5 times the RVR or 1.5 times the visibility specified on the instrument approach chart for the IAP being conducted — but only if:
 (i) a lighting failure has occurred on a runway at a controlled aerodrome; and
           (ii) doubled spacing of runway edge lights results.
       Note 1   At a controlled aerodrome, in the event of failure of 1 electrical circuit on a runway equipped with interleaved circuitry lighting, pilots will be notified of a doubled spacing of runway edge lights, that is, from 60 m spacing to 120 m spacing.
       Note 2   The length of any installed approach lighting system (ALS) is used in the IAP design and may reduce the visibility required. Where this has occurred, the pilot needs to correct the visibility required when the ALS is partially or fully inoperative.
       Note 3   But see subsection (8).
       (3) For a straight-in approach that is an APV or an NPA with the final approach track aligned within the visible approach lighting splay — the minimum altitude or height must be at least the highest of the following:
(a) the DA or DH, or the MDA or MDH, specified on the instrument approach chart for IAP being conducted;
(b) the relevant minima specified in the AFM;
(c) the relevant minima specified in the operator's exposition or operations manual.
Note   But see subsection (7).
       (4) For a straight-in approach that is an APV or an NPA with the final approach track aligned within the visible approach lighting splay — the minimum visibility must be at least the greatest of the following:
(a) the visibility specified on the instrument approach chart for IAP being conducted;
(b) relevant minima specified in the AFM;
(c) relevant minima specified in the operator's exposition or operations manual;
(d) 1 200 m — but only if the approach lighting system normally available at and beyond 420 m from the runway threshold is inoperative;
(e) if the approach lighting system normally available