Seen it many many times and I will always love this one: P: DME volume unbelievably loud. S: DME volume set to more believable level.
On a serious note, as you may know I'm in training to be an A&P mechanic and from what I've learned in the "forms and publications" class and from the experience of my instructors I can tell that writing something silly like that on a gripe sheet will get you in trouble with your employer and possibly the FAA (or whatever govt. agency in youre country).
A&P Mechanic, Rankin Aircraft 78Y
Aircraft are naturally beautiful because form follows function. -TB