Access panel& blind rivet riverting

Equipment used

Bucking bar, Various File, Prick Punch, Hammer, Center Punch, Hammer, Burring tools, Cleco, Countersink, Lead Pencil/Marker, Deburring tool, Aviation Snips, ScalePneumatic drill, Cleco pier, Aluminium Sheet, Rivet Gun, Combination Square, Dividers, Rivet sets, Rivet, Rivet Gauge, Scale

b. Given

1. Material 2024 T3 0.032” [a. Skin(5.5”x 6.0”) b. Doublers(4.5”x 5”) c. Access panel(3.5”x4”) d. Metal sheet Strip(5.5”x0.75”)], Anchor nuts and screws MS21059L3& NAS603-6P 4 sets ,Rivet MS20426AD3-3; 32 rivets, Edge Distance ¼”, Rivet Pitch ½”, Cherry Max ; 3sets(Universal CR3213-4-02&CountersunkCR3212-4-02 1/8” )

Procedure:

1st, the sheet metal layout is transferred (exactly the same in the figure above) with all the metals separated from each other. Something have to be sure is that rivet pitches and edge distances is follow the AC43.13 1B/2A/ a/c repair manual/SRM procedures.

After that skin is taken and cut to the required hole for the access.File and deburr the hole to size. The rivet positions is marked with the center punch , drill thru it and holes get deburred.

Doublers(4 ½ “ x 5”) be taken and cut to the required hole size. The doublers must be place at the back of the skin and drill it thru the holes of the doublers. As the drill is finished, use cleco. Cleco are used to hold both pieces together firmly.

Use anchor nut to mark the holes . How we do?-palace and secure it to the piece, that’s all….

Em, another piece of metal with the size of (3 ½ “ x 4”) are to be cut, file and trimmed. This then should be used for access door on the combined sheet metal.

Ok, now the the best part itself- coating the Alodine(use for preventing the corrosion). Clean it and dry it for half an hour.

By using the given machined screws, close the access door.

Now, the last part of sheet metal- the bottom metal sheet strip must be mark at the desired holes for the Cherry max installation. As you already see here, there are two types of Cherrymax rivets -3 countersunk and 4 universal heads) installed by using the pop rivet gun.

From Re-Engineer your Iman