FAA Aviation Mechanic Airframe (AMA)Airframe StructuresEasy
A technician needs to install rivets in a wing rib location that is accessible from only one side. Which type of fastener is best suited for this application?
- ABlind (Cherry) rivet
- BHi-Shear rivet
- CAN3 bolt with nut
- DAN470 solid rivet
Show answer & explanationAnswer & explanation
Correct answer: A. Blind (Cherry) rivet
Blind rivets, such as Cherry rivets, are designed to be installed and set from one side only, using a mandrel that is pulled through the rivet body to form the shop head. This makes them ideal for locations where the back side of the structure is inaccessible for bucking.
Why the other options are wrong
- B. Hi-Shear rivets require a collar to be set from the opposite side, needing access there.
- C. A bolt and nut also requires two-sided access to install and torque.
- D. Solid AN470 rivets require access to both sides to buck the shop head.
Blind Rivet
A rivet that can be fully installed from one side of a structure using a pull mandrel, used where the opposite side is inaccessible.
- Common brands: Cherry rivets, Cherrylock
- Mandrel is pulled and breaks off after forming the shop head
- Not always approved as a structural repair rivet without specific data
Memory trick: 'Blind Access, Blind Rivet' — one side only calls for a blind rivet.