Hydrogen fuel services provider Universal Hydrogen goes bust after four years.
The single Boeing 737-500 prototype flew 375 hours for certification, which was awarded in 1990.
Japan is in the middle of a jet fuel supply shortage, affecting airport operations big and small.
WestJet mechanics' union went ahead with strike actions, impacting approximately 20,000 travelers.
The prototype G-ARTA took 19 minutes to fly to nearby Wisley, where further testing was to be done.
A global review of commercial flight
