Narrative:

In the descent the captain and I noticed erratic cabin rates at +/- 1000 FPM. Upon arrival the captain contacted maintenance control. Maintenance arrived at the aircraft; and ran a procedure. After the procedure they declared the aircraft airworthy and signed off the write up. The captain then expressed his concern that the aircraft was not repaired but maintenance control said that the aircraft was fixed. On the next flight we closely monitored the pressurization system. Upon descent at approx 14000-15000 ft the captain noticed abnormal indications on the EICAS. He said that the cabin was climbing at 3200 FPM and stated that he was going to run the QRH procedure - pressurization automatic system failure/cabin depressurization. We were cleared to 10000 ft so I increased the rate of descent to more quickly reach a lower altitude. The cabin climbed to 10400 ft with the associated aural warning. The captain stated that he was unable to maintain pressurization. I requested lower from approach and got 6000 ft. We completed the approach and landing normally using a 1000 FPM or less descent for passenger and crew comfort since at this point the cabin was totally unpressurized. I feel that maintenance was pressured to make an on time departure and we should not be rushed when dealing with a serious issue. I think that the captain and I could have been more proactive with maintenance control and asked them to run the procedure again or take the aircraft for a test flight.

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Original NASA ASRS Text

Title: Maintenance failed to properly repair a pressurization problem on the inbound flight and the system failed completely on the next leg.

Narrative: In the descent the Captain and I noticed erratic cabin rates at +/- 1000 FPM. Upon arrival the Captain contacted Maintenance Control. Maintenance arrived at the aircraft; and ran a procedure. After the procedure they declared the aircraft airworthy and signed off the write up. The Captain then expressed his concern that the aircraft was not repaired but Maintenance Control said that the aircraft was fixed. On the next flight we closely monitored the pressurization system. Upon descent at approx 14000-15000 FT the Captain noticed abnormal indications on the EICAS. He said that the cabin was climbing at 3200 FPM and stated that he was going to run the QRH procedure - Pressurization Automatic System Failure/Cabin Depressurization. We were cleared to 10000 FT so I increased the rate of descent to more quickly reach a lower altitude. The cabin climbed to 10400 FT with the associated aural warning. The Captain stated that he was unable to maintain pressurization. I requested lower from approach and got 6000 FT. We completed the approach and landing normally using a 1000 FPM or less descent for passenger and crew comfort since at this point the cabin was totally unpressurized. I feel that maintenance was pressured to make an on time departure and we should not be rushed when dealing with a serious issue. I think that the Captain and I could have been more proactive with Maintenance Control and asked them to run the procedure again or take the aircraft for a test flight.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.