CM...
I'm afraid to disagree with your stance... Apart from the lack of ability to fly an airliner into
any airfield, single engine, whilst being able to guarantee you could force land it "without danger to persons or property", Rule 5 also states you cannot fly within 500' of person / vessel / vehicle / strucutre etc. so you couldn't land anywhere
The solution to the dilemmas are the standard Rule 5 exemptions:
(3) Exemptions from the low flying prohibitions
(a) Landing and taking off
(i) Any aircraft shall be exempt from any low flying prohibition in so far as it is flying in accordance with normal aviation practice for the purpose of taking off from, landing at or practising approaches to landing at or checking navigational aids or procedures at a Government or licensed aerodrome.
(ii) Any aircraft shall be exempt from the 500 feet rule when landing and taking-off in accordance with normal aviation practice.