Eclair Aviation (ECC, Prague Václav Havel) has reintroduced the Challenger 605 type to its fleet in March 2025, ch-aviation research shows.

OK-BPS (msn 5963), an 11.4-year-old Bombardier Business Aircraft, was registered in Czechia on March 5. Currently parked at London Biggin Hill, the jet has yet to enter service with Eclair Aviation.

Eclair Aviation previously operated a Challenger 605 between 2021 and 2022. The aircraft management and private jet charter firm's fleet also includes a Global 6000, a G200, and a G280.

Previously registered as HB-JSG in Switzerland and based at Stuttgart, it was the last of two Challenger 605s operated by German engineering and technology conglomerate Robert Bosch. After being effectively phased out at the end of 2024, the aircraft was ferried on January 13, 2025, to London Biggin Hill, where a test flight was completed on February 11.

Following this retirement, Bosch's corporate fleet now includes a Challenger 650 and a Challenger 3500, which was recently delivered.