Transport Canada CF-2019-18

Requires installation of a modified top bracket and new middle bracket on all affected portable oxygen bottle installations to improve portable oxygen bottle accessibility. Bombardier discovered that easy removal of the portable oxygen bottle from its support bracket may not always be possible due to the latch of the upper bracket assembly catching on the pressure gauge tube or on the pressure gauge bezel of the portable oxygen bottle. The portable oxygen bottle is required to be accessible for use by cabin crew members in emergency situations.