We have developed a system for monitoring aircraft structural health that uses optical fiber sensors. Our prototype device for Brillouin optical correlation domain analysis (BOCDA) uses an optical fiber as a sensor, and we verified that this device is sufficiently durable for installation on board aircraft. It functioned effectively as an aircraft structural health monitoring system in a flight demonstration test using a business jet. As the next development step, we plan to improve the reliability of this system for practical application as a product monitoring service.