Document ID: chunk:federal_register_of_legislation:F2024C01118:reg:5:p6
Version: federal_register_of_legislation:F2024C01118
Segment Type: reg
Provision Reference: reg 5 (pt 6/7)
Character Range: 61166–63999

check to confirm that the aircraft's flight controls have been tested and are functioning correctly;
(f) for each system fitted to, or carried on, the aircraft for measuring and displaying pressure altitude, a check of the system's accuracy in accordance with the procedures mentioned in section 14.03, as applicable;
(g) if carriage of supplemental oxygen is required for a flight in accordance with Part 131 and this MOS — checks to ensure that:
           (i) the required amount of supplemental oxygen is carried; and
           (ii) the approved oxygen delivery system is functioning properly; and
           (iii) quick-donning masks are available if required by the approved oxygen delivery system; and
           (iv) if the oxygen masks are adjustable — the masks fit each flight crew member, and any other person for whom supplementary oxygen must be available.

14.03 Checking systems for measuring and displaying pressure altitude — general
       (1) For paragraph 14.02 (f), this section sets out the requirements for checking aircraft systems for measuring and displaying pressure altitude (pressure altitude systems).
       (2) If:
(a) an aircraft is at a known elevation (the site elevation); and
(b) an accurate QNH is available;
        then, before take-off, the pilot in command of the aircraft must check the accuracy of each of the aircraft's pressure altitude systems in accordance with this section.
Note   For accurate QNH and site elevation — see section 14.04.
       (3) A pressure altitude system with an accurate QNH is operative for a VFR flight only if the system reads site elevation to within:
(a) 100 ft; or
(b) at test sites above 3 300 ft — 110 ft.

14.04 Accurate QNH and site elevation
       (1) In this Chapter, a QNH is to be considered accurate only if it is provided by 1 of the following:
(a) AAIS;
(b) ATC;
(c) ATIS;
(d) AWIS;
(e) CA/GRS;
(f) WATIR.
       (2) QNH contained in an authorised weather forecast must not be used for checking the accuracy of a pressure altitude system.
       (3) Site elevation must be derived from aerodrome survey data that is:
(a) authorised in writing (as the case requires):
           (i) by CASA; or
           (ii) by an NAA; or
(b) supplied in writing by the relevant aerodrome operator.

CHAPTER 15 AIR TRAFFIC SERVICES — PRESCRIBED REQUIREMENTS

Division 15.1 Use of a class of airspace

15.01 Purpose
        For subregulation 131.353 (1), this Division prescribes requirements in relation to the use by a Part 131 aircraft of a class of airspace or a portion of a class of airspace.

15.02 Transition altitude, transition layer and transition level
       (1) This section applies to a flight using any class of airspace, whether controlled or uncontrolled, that is within an Australian FIR.
       (2) The transition altitude is 10 000 ft.