Document ID: chunk:federal_register_of_legislation:F2024C01173:reg:2:p12
Version: federal_register_of_legislation:F2024C01173
Segment Type: reg
Provision Reference: reg 2 (pt 12/20)
Character Range: 62673–65631

intended extended diversion time operations in the event of the following contingencies:
 (a) total loss of thrust on one engine;
 (b) total loss of normal generated electrical power, involving the demonstration of the EDTO-critical electrical conditions identified during the type certification of the aeroplane;
 (c) total loss of pressurisation;
 (d) any other event or condition required by CASA for reasons relating to operational challenge, safety management, crew workload or performance.

Division 4—Requirements for conduct of EDTO

2.15  Scope of Division 4, Chapter 2
  This Division:
 (a) is made for paragraph 121.035(3)(a) of CASR; and
 (b) prescribes requirements in relation to conducting EDTO flights.

2.16  Flight planning limitations for all EDTO flights
 (1) A flight plan route for an aeroplane used to conduct an EDTO flight must be limited to that for which the diversion time to an EDTO en‑route alternate aerodrome for the flight, measured at the speed mentioned in subsection (2), does not exceed the maximum diversion time, in ISA and still air conditions.
 (2) For subsection (1), the speed is:
 (a) if the aeroplane is a 2‑engine aeroplane—a one‑engine-inoperative cruising speed specified in the operator's exposition for this section; or
 (b) if the aeroplane is a 3‑ or 4‑engine aeroplane—a normal cruising speed, specified in the operator's exposition for this section.
Note: An EDTO flight may also be further limited by a provision applying under section 2.17.

2.17  Additional flight planning limitations—EDTO beyond 180 minutes
 (1) The requirements in this section apply in relation to an EDTO beyond a maximum diversion time of 180 minutes.

Limits of cargo fire suppression system—all aeroplanes
 (2) The time required by an aeroplane to fly the distance to a planned EDTO en‑route alternate aerodrome:
 (a) at the normal cruising speed specified in the operator's exposition for this section; and
 (b) correcting for forecast wind and temperature;
must not exceed the time specified for the aeroplane's cargo fire suppression system in one of the documents for the aeroplane mentioned in subsection 2.03(2), minus 15 minutes.

Limits of most limiting time-limited system for 2‑engine aeroplane
 (3) If the aeroplane is a 2‑engine aeroplane, the time required by the aeroplane to fly the distance to a planned EDTO en‑route alternate aerodrome:
 (a) measured at the one‑engine‑inoperative cruising speed specified in the operator's exposition for this section; and
 (b) correcting for forecast wind and temperature;
must not exceed the time specified for the aeroplane's most limited time-limited system (other than the cargo fire suppression system), in one of the documents for the aeroplane mentioned in subsection 2.03(2), minus 15 minutes.

2.18  Flight dispatch requirements for EDTO

General flight dispatch requirements
 (1) An EDTO flight of an aeroplane must not commence unless:
 (a) the pilot in command