In a preferred embodiment, a retrofit storage bin door hinge includes an extension member than increases the storage volume of the bin by at least 5 percent or 10 percent, thereby permitting the storage of larger carry-on bags. Required access to the ceiling panels during maintenance operations is preserved by the hinges pivotable attachment to a pivot mount attached to the ceiling of a storage bin. In this manner, the hinge assembly and door may be readily translated downwardly to provide full access to the ceiling panels during a maintenance operation.