SGC, this is DH for Lower than Standard Category I Operations
1. Decision height.
A lower than Standard Category I Operation decision height must not be lower than:
(i) the minimum decision height specified in the AFM, if stated; or
(ii) the minimum height to which the precision approach aid can be used without the required visual reference; or
(iii) the OCH for the category of aeroplane; or
(iv) the decision height to which the flight crew is authorised to operate; or
(v) 200 ft.
whichever is higher.
No change in the DH but in required RVR
Precision approach — Category II and other than Standard Category II operations 1. General.
(i) A Category II operation is a precision instrument approach and landing using ILS or MLS with:
(A) A decision height below 200 ft but not lower than 100 ft; and
(B) A runway visual range of not less than 300 m.
(ii) An other than Standard Category II operation is a precision instrument approach and landing using ILS or MLS which meets facility requirements as established in paragraph (iii) below with:
(A) A decision height below 200 ft but not lower than 100 ft; and
(B) A runway visual range of not less than 350/400 m.
(iii) The ILS/MLS that supports other than a Standard Category II operation shall be an unrestricted facility with a straight in course (≤ 3o offset) and the ILS shall be certificated to:
(A) Class I/T/1 for operations down to 450m RVR and to a DH of 200 ft or more; or,
(B) Class II/D/2 for operations in RVRs of less than 450m or to a DH of less than 200 ft.
Single ILS facilities are only acceptable if Level 2 performance is provided.
2. Decision Height.
An operator must ensure that the decision height for:
(i) Other than Standard Category II and Category II operations is not lower than:
(A) The minimum decision height specified in the AFM, if stated; or
(B) The minimum height to which the precision approach aid can be used without the required visual reference; or
(C) The OCH for the category of aeroplane; or
(D) The decision height to which the flight crew is authorised to operate; or
(E) 100 ft.
whichever is higher.
NO change in the DH value here as well but different requirements for the autoland systems and RVR.
