Singapore legislation

Regulation 122

of Air Navigation (121 — Commercial Air Transport by Large Aeroplanes) Regulations 2018

Regulation 122

Ground proximity warning system

Subregulation 1

An AOC holder must ensure that every aeroplane (turbine‑powered or piston‑engined) with an MCTOM exceeding 5,700 kg or an MAPSC exceeding 9 is equipped with a ground proximity warning system which has a forward‑looking terrain avoidance function.

Subregulation 2

The ground proximity warning system required to be carried by a turbine‑powered aeroplane in accordance with paragraph (1) —

(a)

must provide an automatic and distinctive warning to the flight crew when the aeroplane is in potentially hazardous proximity to the earth’s surface; and

(b)

must provide warnings for all of the following circumstances:

(i)

excessive descent rate;

(ii)

excessive terrain closure rate;

(iii)

excessive altitude loss after take-off or go-around;

(iv)

unsafe terrain clearance while not in the landing configuration;

(A)

gear not locked down;

(B)

flaps not in a landing position;

(v)

excessive descent below the instrument glide path.

Subregulation 3

The ground proximity warning system required to be carried by a piston-engined aeroplane in accordance with paragraph (1) —

(a)

must provide an automatic and distinctive warning to the flight crew when the aeroplane is in potentially hazardous proximity to the earth’s surface; and

(b)

must provide warnings for all of the following circumstances:

(i)

excessive descent rate;

(ii)

excessive altitude loss after take‑off or go‑around;

(iii)

unsafe terrain clearance.

Read in full context — Air Navigation (121 — Commercial Air Transport by Large Aeroplanes) Regulations 2018 →