Home › Part 107 Practice Tests › Maintenance & Preflight Inspection Questions › Question 25
What is a risk of using non-manufacturer parts or making unauthorized modifications?
- A.Modified aircraft are automatically approved for all operations
- B.Performance may change in unexpected ways and manufacturer warranty coverage may be affected
- C.Substitute parts always improve reliability because they are newer
Correct answer
B. Performance may change in unexpected ways and manufacturer warranty coverage may be affected
Why
Parts and modifications that the manufacturer has not approved can alter weight, balance, strength, or behavior. They can also affect warranty support, so changes should be evaluated carefully and tested.
Source: FAA-G-8082-22 Ch. 12 · ACS knowledge area: Maintenance and Preflight Inspection Procedures · From the Maintenance & Preflight Inspection practice bank (MNT-025).