Your 'Dad' must have a valid SEP Class Rating included on his licence (whether ATPL or PPL). It is the Rating, not the licence which matters.
His ATPL will include Night Qualification. But to carry passengers, he must have the relevant 90-day night recency in the same Class of aeroplane. 777 night flying does NOT count for SEP night recency purposes.
As he has a JAR-FCL IR, he may have IMC Rating privileges included fairly easily - but NOT Single Pilot IR privileges unless he also has a Single Pilot IR. With IMC Rating privileges, he will be permitted to fly under IFR in Class A/D/E CTRs when IFR is mandatory in such airspace. Such as at night - even if it's VMC. Or he could fly under SVFR, of course, as limited by his IMC Rating privileges.
Without an IMC Rating he could only fly under SVFR at night in a CTR.
But as a ba professional pilot, he will of course know all this. Won't he?
Last edited by BEagle; 9th October 2004 at 12:24.