### Question
What does code-share relationship mean?


### Answer
**Code-share relationship** has the following meaning in *39 U.S.C. § 5402*:

> a relationship pursuant to which any certificated air carrier or foreign air carrier's designation code is used to identify a flight operated by another air carrier or foreign air carrier

#### Citation:
  - *39 U.S.C. § 5402*
  - Heading: **PART V-TRANSPORTATION OF MAIL > CHAPTER 54-TRANSPORTATION OF MAIL BY AIR**

