Destination alternate
36.—(1)  Subject to paragraph (2), the pilot‑in‑command of a Singapore registered aeroplane must nominate at least one destination alternate aerodrome for any flight of the aeroplane that is to be conducted in accordance with the Instrument Flight Rules.
(2)  A destination alternate aerodrome is not required for a flight of a Singapore registered aeroplane that is conducted in accordance with the Instrument Flight Rules —
(a)when the duration of the flight from the departure aerodrome, or from the point of in‑flight re‑planning, to the destination aerodrome is such that, taking into account all meteorological conditions and operational information relevant to the flight, at the estimated time of use of the destination aerodrome, a reasonable certainty exists that —
(i)the approach and landing may be made under visual meteorological conditions; and
(ii)the destination aerodrome has separate runways that are usable, with at least one runway having an operational instrument approach procedure; or
(b)when all of the following conditions are met:
(i)the aerodrome of intended landing is an isolated aerodrome;
(ii)a standard instrument approach procedure is prescribed for the aerodrome of intended landing;
(iii)a point of no return is determined;
(iv)the flight is continued past the point of no return only when the current available meteorological information indicates that both of the following meteorological conditions will exist at the aerodrome of intended landing at the estimated time of use:
(A)a cloud base of at least 300 m (1,000 ft) above the minimum cloud base associated with the instrument approach procedure;
(B)visibility of at least 5.5 km (3 NM), or of 4 km (2 NM) more than the minimum visibility associated with the procedure.
(3)  Subject to paragraph (4), the pilot-in-command of a Singapore registered helicopter must nominate at least one destination alternate heliport for any flight of the helicopter that is to be conducted under the Instrument Flight Rules.
(4)  A destination alternate heliport is not required for a flight of a Singapore registered helicopter that is conducted in accordance with the Instrument Flight Rules —
(a)when the current available meteorological information indicates that, at the estimated time of use of the heliport of intended landing, the following meteorological conditions will exist:
(i)a cloud base of at least 120 m (400 ft) above the minimum cloud base associated with the instrument approach procedure;
(ii)visibility of at least 1.5 km more than the minimum visibility associated with the procedure; or
(b)when all of the following conditions are met:
(i)the heliport of intended landing is an isolated heliport;
(ii)no suitable alternate heliport is available;
(iii)an instrument approach procedure is prescribed for the isolated heliport of intended landing;
(iv)a point of no return is determined, if the heliport of intended landing is an offshore destination.
(5)  The pilot-in-command of a Singapore registered aircraft must ensure that, for every flight mentioned in paragraph (1) or (3) (as the case may be), the flight plan specifies the aerodrome or heliport that was nominated as the destination alternate aerodrome or destination alternate heliport.