Competency checks for pilot operating in single pilot role for IFR flight or at night
166.  Where a person is being assessed for the person’s competency to operate as the pilot‑in‑command for a single pilot operation in a relevant aircraft for a flight in accordance with the Instrument Flight Rules or at night, the AOC holder must ensure that the person completes and passes the following competency checks in the single pilot role:
(a)an Operator Proficiency Check;
(b)an Operator Line Check;
(c)a Safety and Emergency Procedures Check;
(d)an assessment of route and aerodrome competence, as specified in regulation 160.