Seal-cover assembly for an aircraft or other structure and a method of assembling the same

An aircraft comprising:

• a structure including a first side and a second side that opposes the first side;
• a seal-cover assembly comprising:
• a cap defining a recess;
• an insert fixed to the cap within the recess to form a cover unit;
• wherein the cover unit is secured to the first side of the structure;
• and
• a fastener disposed through the structure from the second side of the structure, and the fastener is attached to the cover unit relative to the second side without accessing the first side of the structure.

A method of assembling a seal-cover assembly to a structure, the method comprising:

• securing a cover unit to a first side of the structure such that an interior of the cover unit is inaccessible from the first side of the structure;
• inserting a fastener through the structure relative to a second side of the structure;
• and
• attaching the fastener to the interior of the cover unit relative to the second side of the structure without accessing the first side of the structure to attach the fastener to the cover unit.