| (1) | All turbine-engine aeroplanes of a maximum certificated take-off mass in excess of 15 000 kg or authorised to carry more than 30 passengers, for which the individual certificate of airworthiness is first issued on or after 1 July 1979, shall be equipped with a TAWS. |
| (2) | All turbine-engine aeroplanes of a maximum certificated take-off mass in excess of 5 700 kg or authorised to carry more than nine passengers, for which the individual certificate of airworthiness is first issued on or after 1 January 2010, shall be equipped with a TAWS which has a predictive terrain avoidance function. |
| (3) | All turbine-engine aeroplanes authorised under this Part to carry passengers shall be equipped with a TAWS which has a predictive terrain avoidance function. |
| (4) | As from 1 January 2013 all piston-engine aeroplanes of a maximum certificated take-off mass in excess of 5 700 kg or authorised to carry more than nine passengers shall be equipped with a TAWS which provides the warnings contemplated in subregulations (6)(a) and (c), warning of unsafe terrain clearance and a predictive terrain avoidance function. |
| (5) | A TAWS shall automatically provide a timely and distinctive warning to the flight crew when the aeroplane is in potentially hazardous proximity to the earth's surface. |
| (6) | A TAWS shall provide, unless otherwise specified herein, warnings of the following circumstances— |
| (a) | excessive descent rate; |
| (b) | excessive terrain closure rate; |
| (c) | excessive altitude loss after take-off or go-around; |
| (d) | unsafe terrain clearance while not in landing configuration; |
| (i) | gear not locked down; or |
| (ii) | flaps not in a landing position; and |
| (e) | excessive descent below the instrument glide path. |
| (7) | No person shall inhibit or otherwise render inoperative any required TAWS during flight time except in accordance with the approved aeroplane flight manual. |
| (8) | An air service operator shall implement database management procedures that ensure a timely distribution and update of current terrain and obstacle data to TAWS. |
[Regulation 121.05.5(8) inserted by regulation 16(g) of Notice No. R. 3170, GG48228, dated 17 March 2023 (Twenty-Sixth Amendment of the Civil Aviation Regulations, 2023)]
