4.5" x 7.625" Hinged Access Kit
Hinged access kit with a 4.5 x 7.625 inch opening. It will accept a gentle bend for installation. Constructed with 0.032 6061-T6 and secured with your choice of a Hartwell style latch or 1/4 turn spring fasteners with floating nutplates using slotted fasteners for a low profile or winged fasteners for opening without a tool. The Hartwell latch will come installed using flush rivets. The quarter turn screws and nutplates will reduce the opening size by a 1/2 inch (4.5 x 5.25) to accommodate nutplates. Kit consists of three pieces (rear doubler, door, and front trim ring) and has an overall dimension of 6" x 9" which is the required space for installation. There is a recess for the hinge barrel which prevents the pin from leaving the barrel. The hinge comes attached to the door using Cherry N series stainless pop rivets or optionally with NAS1097-3.5 solid rivets.
Installation of hinged access kits should be with the hinge into the relative wind so if they were to inadvertently open in flight they would be kept closed by the airflow across the fuselage.