NCO.OP.111 Aerodrome operating minima — 2D and 3D approach operations

SI 2024 No. 1290

  1. The DH to be used for a 3D approach operation or 2D approach operation flown with the CDFA technique must not be lower than the highest of:

    1. the OCH for the category of aircraft;
    2. the published approach procedure DH or MDH, where applicable;
    3. the system minimum specified in Table 1; or
    4. the minimum DH specified in the aircraft flight manual or equivalent.

  2. The MDH for a 2D approach operation flown without the CDFA technique must not be lower than the highest of:

    1. the OCH for the category of aircraft;
    2. the published approach procedure MDH, where applicable;
    3. the system minimum specified in Table 1; or
    4. the minimum MDH specified in the aircraft flight manual, if stated.

Table 1

System Minima

Facility Lowest DH/MDH (ft)
ILS/MLS/GLS 200
GNSS/SBAS (LPV) 200
Precision approach radar (PAR) 200
GNSS/SBAS (LP) 250
GNSS (LNAV) 250
GNSS/Baro-VNAV (LNAV/VNAV) 250
Helicopter point‑in‑space approach 250
LOC with or without DME 250
SRA (terminating at ½ NM 250
SRA (terminating at 1 NM) 300
SRA (terminating at 2 NM or more) 350
VOR 300
VOR/DME 250
NDB 350
NDB/DME 300
VDF 350