advice for creating an access hatch

[PeterK]

It appears I may need to replace my salon air handler which is under the flybridge structure. The three OE panels on the inside are far too small to even pull the cover off the unit to diagnose the problems.

I am looking for advice from anyone who has had a similar issue. I am thinkking I will need to cut and fabricate an opening approximately 2'6" to 3' high by 4'-5' on the back side. The glass here is fairly thick and hope I can use the cut out for the cover. A secondary issue is this area is on about a 45 degree angle from perpendicular so channeling water away is a concern.

Any and all input will be greatly appreciated

This is th 5th or 6th time where I have had to come up wwith solutions for equipment repair/replacement that wasso easy during construction. Seems all too often no thought was given to how things get repaired or replaced...

 

[Cricket]

How about some pictures. Sort of surprised as Hatteras was pretty good about providing access to areas where AC's are located etc.