Part 121 (Australian Air Transport Operations—Larger Aeroplanes) Manual of Standards 2020
Division 1ATake-off performance requirements: propeller-driven aeroplanes with maximum take-off weight not more than 5 700 kg
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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 a calculation that relates to an aeroplane’s performance to be made using performance data set out in the aircraft flight manual instructions for the aeroplane or approved by CASA. See the CASR Dictionary for the definition of aircraft flight manual instructions.
Note 2: Regulation 91.055 of CASR makes it an offence if an aircraft is operated in a manner that creates a hazard to another aircraft, a person or property.
9.08B Application of this Division
This Division applies to an aeroplane that: (a) is a propeller-driven aeroplane; and (b) has a maximum take-off weight of not more than 5 700 kg.
9.08C Definitions for this Division
In this Division:
approved take‑off factor, for an aeroplane, means the take‑off factor for which the aeroplane operator holds an approval under regulation 121.010 of CASR.
factored take‑off run: see section 9.08D.
standard take‑off factor means:
(a) for an aeroplane with a maximum take-off weight of not more than 2 000 kg—1.15; and
(b) for an aeroplane with an maximum take-off weight of more than 2 000 kg, but less than 3 500 kg—a factor derived by linear interpolation between 1.15 and 1.25, according to the aeroplane’s maximum take-off weight; and
(c) for an aeroplane with a maximum take-off weight of 3 500 kg or more—1.25.
9.08D Meaning of factored take-off run
The factored take‑off run, for an aeroplane that is of the kind mentioned in column 1 of an item in table 9.08D, is the take‑off run required, for the aeroplane, multiplied by the factor mentioned in column 2 of the item.