Civil Aviation Act, 2009 (Act No. 13 of 2009)RegulationsCivil Aviation Regulations, 2011Part 91 : General Aviation and Operating Flight RulesSubpart 4 : Instruments and Equipment91.04.30 Terrain awareness and warning systems |
| (1) | Within six months from the commencement of these Regulations, a turbine-engine aeroplane of a maximum certificated take-off mass in excess of 5 700 kg or authorized to carry more than nine passengers operating according to the IFR shall be equipped with a TAWS which has a predictive terrain avoidance function that meets the requirements specified in Document SA-CATS 91. |
| (2) | A TAWS installed in turbine-engine aeroplanes of a maximum certificated take-off mass in excess of 5 700 kg or authorized to carry more than nine passengers for which the individual certificate of airworthiness was first issued after 1 January 2011 shall provide, as a minimum, warnings of at least the circumstances specified in Document SA-CATS 91. |
| (3) | Except as provided in subregulation (4), each TAWS required by subregulation (1) shall be functioning properly prior to flight. |
| (4) | An aircraft may be operated without a functioning TAWS— |
| (a) | as provided for in an approved MEL; or |
| (b) | if repairs cannot be effected at the aerodrome last operated into, the aircraft is flown by the most direct routing to the nearest facility where the repairs can be made. |
| (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. |