Thank you Guys,
Webby737 you posted exactly what I was looking for but could not find for some reason which must be lack of ability.
AmarokGTI you posted exactly what I have always done but I seem to be dealing with people these days who are scared of touching the bulbs and engineers who do not want them to.
I do not fly any more myself, have just been advising people.
I have changed many Korry Switch bulbs but always carefully and when stationary on the ground, the important thing as mentioned above is to make sure you replace with the correct bulb. We used to call them 'Spangles' in the RAF after the square boiled sweets that only those of a certain age will remember!
MM
Last edited by Miles Magister; 31st Dec 2019 at 14:12.