# OTV-4

> uncrewed spaceflight mission; second flight of the second Boeing X-37B

**Wikidata**: [Q20803950](https://www.wikidata.org/wiki/Q20803950)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/OTV-4)  
**Source**: https://4ort.xyz/entity/otv-4


## References

1. Jonathan's Space Report
2. [Source](https://spaceflightnow.com/2017/05/07/x-37b-spaceplane-returns-to-earth-and-makes-precision-autopilot-landing/)
3. [Source](https://space.skyrocket.de/doc_sdat/x-37.htm)