Document ID: chunk:federal_register_of_legislation:F2024C01173:reg:4:p17
Version: federal_register_of_legislation:F2024C01173
Segment Type: reg
Provision Reference: reg 4 (pt 17/18)
Character Range: 186226–188837

Despite subsection (2), the route width margins mentioned in subparagraph (2)(a)(i) or (ii) must be increased to 10 NM if the aeroplane cannot maintain a track using a navigation specification of RNP 2 or better.

En-route 90-minute limitation for 3- or 4‑engine aeroplanes
 (5) Also, for the purposes of paragraph 9.02(a), if the aeroplane is a 3- or 4‑engine aeroplane, it is a requirement that the route to be flown by the aeroplane is not more than 90 minutes away from an aerodrome where a landing can be made in accordance with Division 2 of this Chapter.
 (6) The aeroplane may be operated more than 90 minutes away from such an aerodrome if:
 (a) it is assumed that 2 engines fail simultaneously at the most critical point of that portion of the route where the aeroplane is more than 90 minutes (at normal cruising speed) away from an aerodrome where a landing can be made in accordance with Division 2 of this Chapter; and
 (b) the 2-engine inoperative en route flight path data permits the aeroplane to continue the flight, in the expected meteorological conditions, from the point where the 2 engines are assumed to have failed, to an aerodrome at which it is possible to land with 2 engines inoperative; and
 (c) the net flight path, taking into account the effect of icing protection systems if the meteorological conditions require their operation, clears all terrain and obstructions by at least 2 000 ft within (subject to subsection (7)) 5 NM of the intended track to be flown; and
 (d) the net flight path has a positive slope at an altitude of 1 500 ft above the aerodrome where the landing is assumed to be made after the failure of 2 engines; and
 (e) the expected weight of the aeroplane at the point where the 2 engines are assumed to fail must be not less than that which would include sufficient fuel to proceed to an aerodrome where the landing is assumed to be made, and to arrive there at an altitude of at least 1 500 ft directly over the aerodrome and thereafter to fly level for at least 15 minutes.
 (7) Despite paragraph (6)(c), the route width margins must be increased to 10 NM if the aeroplane cannot maintain a track using a navigation specification of RNP 2 or better.

Division 1A—Take-off performance requirements: propeller-driven aeroplanes with maximum take-off weight not more than 5 700 kg

9.08A  Scope of Division 1A, Chapter 9
  This Division:
 (a) is made for subregulation 121.395(1) of CASR; and
 (b) prescribes requirements relating to take-off performance for a flight of an aeroplane mentioned in section 9.08B.
Note 1: Regulation 121.390 of CASR requires