The New rules interpretation thread.

[BuzzBox]

Originally Posted by compressor stall

So you’re in the left seat from Sydney to Perth at FL380. Can you take a pee in the lav without either copping a $8500 dollar fine or descending OCTA?

Try 121.535 Relief of Pilot in Command:

(1) The operator and the pilot in command of an aeroplane for a flight each contravene this subregulation if:

(a) the pilot in command delegates the conduct of the flight; and
(b) the delegation is not permitted by either subregulation (2) or (3).

General
(2) The pilot in command of an aeroplane for a flight may delegate the conduct of the flight to a pilot who is qualified under regulation 121.495 as pilot in command for the flight.
Flight above flight level 200
(3) The pilot in command of an aeroplane for a flight may delegate the conduct of the flight above flight level 200 to a pilot who meets the requirements mentioned in subregulation (4).
(4) The requirements are as follows:

(a) the pilot must hold an air transport pilot licence;

(b) the pilot must be qualified under regulation 121.500 as co‑pilot for the flight;

(c) the pilot must have the flying experience required by regulation 121.480 for the flight;

(d) the pilot must have the knowledge of the route of the flight required by the operator’s exposition.

(5) For the purposes of paragraph (4)(d), the operator’s exposition must include the knowledge the pilot must have of the route of the flight.

I take that to mean the PIC can delegate command of the aircraft to an appropriately qualified co-pilot above FL200.