| (1) | All turbine-engine aeroplanes of a maximum certificated take-off mass in excess of 15 000 kg, 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 5700 kg or certified 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 TAWS which has predictive terrain avoidance function. |
[Regulation 135.05.5 substituted by regulation 29 of Notice No. R. 534, GG 36712, dated 30 July 2013 (Third Amendment to the Civil Aviation Regulations, 2013)]
| (3) | 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, 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 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 the landing configuration as follows— |
| (i) | gear not locked down; or |
| (ii) | flaps not in a landing position; and |
| (e) | excessive descent below the instrument glide path. |
| (7) | The TAWS equipment required by this regulation shall meet the requirements specified in technical standard 91.04.33 of Document SA-CATS 91. |
| (8) | No person shall inhibit or otherwise render inoperative any required TAWS during flight time except in accordance with the approved aeroplane flight manual. |
| (9) | An air service operator shall implement database management procedures that ensure timely distribution and update of current terrain and obstacle data to TAWS. |
[Regulation 135.05.5(9) inserted by regulation 18(f) of Notice No. R. 3170, GG48228, dated 17 March 2023 (Twenty-Sixth Amendment of the Civil Aviation Regulations, 2023)]
| (10) | A turbine-engine aeroplane with an MCTOM of less than 5 700 kg and authorised to carry between five and nine passengers shall be equipped with TAWS that provides— |
| (a) | warnings stipulated in subregulation (6); |
| (b) | a warning of unsafe terrain clearance; and |
| (c ) | a predictive terrain avoidance function. |
[Regulation 135.05.5(10) inserted by regulation 18(f) of Notice No. R. 3170, GG48228, dated 17 March 2023 (Twenty-Sixth Amendment of the Civil Aviation Regulations, 2023)]
