C150J
Well-Known Member
Hi guys,
I posted this in the Airline Pilots forums thinking that it would get the most exposure from our current and former CRJ-200 drivers. We had a PACK failure the other day at 350 with no annunciations. The only reason I saw it happen was the fact that the FA called up and said it was pretty hot (full boat), so I switched to the ECS synoptic. I then noticed that the PACK was at 3psi (not regulating at 30psi), and soon after went to 0psi. The green outline of the pack then went to white. No warnings, cautions, or status messages indicated any sort of failure. The cabin altitude began to slowly rise, so our descent to FL250 was expeditious. We then reset the PACK.
Excuse my ignorance of systems logic, but to my knowledge, the only cautions dealing with PACKs are overtemp/overpress. I don't even recall one for freezing a PACK, which I've also seen before. Would the next annunciation have been the CABIN ALT caution at 8,500 cabin altitude? Am I missing something here?
Again, I apologize if I'm having a brain fart... just kind of surprised we didn't even get a R PACK OFF message.
J.
I posted this in the Airline Pilots forums thinking that it would get the most exposure from our current and former CRJ-200 drivers. We had a PACK failure the other day at 350 with no annunciations. The only reason I saw it happen was the fact that the FA called up and said it was pretty hot (full boat), so I switched to the ECS synoptic. I then noticed that the PACK was at 3psi (not regulating at 30psi), and soon after went to 0psi. The green outline of the pack then went to white. No warnings, cautions, or status messages indicated any sort of failure. The cabin altitude began to slowly rise, so our descent to FL250 was expeditious. We then reset the PACK.
Excuse my ignorance of systems logic, but to my knowledge, the only cautions dealing with PACKs are overtemp/overpress. I don't even recall one for freezing a PACK, which I've also seen before. Would the next annunciation have been the CABIN ALT caution at 8,500 cabin altitude? Am I missing something here?
Again, I apologize if I'm having a brain fart... just kind of surprised we didn't even get a R PACK OFF message.
J.