Part 121 (Australian Air Transport Operations—Larger Aeroplanes) Manual of Standards 2020
Chapter 1—PreliminaryChapter 1—Preliminary
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Chapter 1—Preliminary
1.01 Name
(1) This instrument is the Part 121 (Australian Air Transport Operations—Larger Aeroplanes) Manual of Standards 2020. (2) This instrument may also be cited as: (a) the Part 121 Manual of Standards; or (b) the Part 121 MOS.
1.03 Authority
This instrument is made under the Civil Aviation Safety Regulations 1998.
Note: CASA may issue a Manual of Standards for Part 121 (Australian air transport operations—larger aeroplanes): see regulation 121.015 of CASR.
1.04 Definitions
Note: A number of expressions used in this instrument are defined in the Dictionary at the end of the Civil Aviation Safety Regulations 1998, or in section 3 of the Civil Aviation Act 1988. Some definitions in the Dictionary have been included in section 1.04, or another provision of this instrument, for ease of reference.
(1) In this instrument:
ACAS means airborne collision avoidance system.
accelerate stop distance available means the length of the take-off run available plus the length of the stopway.
actual landing distance: see subsection 9.13(1).
additional fuel means the supplementary amount of fuel required to allow an aeroplane that suffers engine failure or loss of pressurisation at the most critical point along a route, whichever results in the greater subsequent fuel consumption, to:
(a) proceed to an alternate aerodrome; and
(b) fly for 15 minutes at a holding speed at 1 500 ft above the aerodrome elevation in ISA conditions; and
(c) make an approach and landing.
adequate aerodrome: see Part 1 of the CASR Dictionary.
ADF means automatic direction finder.
aerodrome forecast means:
(a) for an aerodrome in Australian territory—an authorised weather forecast for the aerodrome issued by the Bureau of Meteorology, that is labelled as a “TAF”; and
(b) for an aerodrome outside Australian territory—an authorised weather forecast for the aerodrome that meets the requirements of standard 6.2 of Annex 3, Meteorological Service for International Air Navigation, to the Chicago Convention, in relation to an aerodrome.
Note: TAF is an acronym for terminal area forecast.
airborne collision avoidance system: see Part 1 of the CASR Dictionary.