Originally Posted by FormationFlyer
GPS is NOT legal as a primary means of navigation in UK airspace. If you cannot fly with a map/radio nav aids in that situation then GPS must not be used to perform the flight.
Many on these forums have disagreed. Indeed, it has been observed that some UK GA aeroplanes have CAA-approved Flight Manual Supplements for GPS installations that meet RNP5 airspace (BRNAV) primary navigation requirements.
In a thread on a different topic, Formation Flyer asked:
Do you have any ANO reference, as I cannot find any documentation for the rule you suggest exists?
Formation Flyer, it would be really useful if you could answer this question in respect of your own contentious assertion.