Yes but try and get a risk adverse RM or CE to sign off something, even if they have been doing it for years without issue...... There is a real reluctance to sign thins off or permit under Tech Directives at times, forcing individuals to take the risk on themselves in work arounds just to get the job done.Had an authority mention they were considering allowing the use of iPads in the cockpit of a particular airframe. Asked the engineers in DMO if they had any concerns.
"That's a short response, normally its longer. Why so confident"
"Ummm.....we/they have been doing it for a couple of years no with no issues."