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Emb-145 first officer reported the pressurization system was having difficulty maintaining cabin pressure; but eventually began to work properly.
| Attributes | |
| ACN | 1595446 |
| Time | |
| Date | 201811 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | BUF.Airport |
| State Reference | NY |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | EMB ERJ 145 ER/LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Pressurization System |
| Person 1 | |
| Function | First Officer Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
Climbing through FL200; it was noticed that the cabin altitude was at 8;000 feet and differential pressure was at 3.9. The aircraft had been already been operating with an MEL of pack 1. Noticing this; the captain then asked for a descent back to FL180. ATC was notified that our pressurization system was not functioning as it should; and a descent was approved back down to FL180. While descending back down to FL180 the cabin altitude continued to climb slowly. The crew then decided to be proactive and ask for a descent down to 10;000 feet. On the way down to 10;000 feet; the cabin altitude increased to 10;500 feet. And gave an alert until level at 10;000 feet. Subsequently; the aircraft began to pressurize again. Dispatch was notified and asked if at the new altitude fuel was efficient to continue to our destination and confirmed it was. Shortly after a pack 2 overheat was presented on the EICAS. The checklists were followed and the remainder of the flight was uneventful.
Original NASA ASRS Text
Title: EMB-145 First Officer reported the pressurization system was having difficulty maintaining cabin pressure; but eventually began to work properly.
Narrative: Climbing through FL200; it was noticed that the cabin altitude was at 8;000 feet and differential pressure was at 3.9. The aircraft had been already been operating with an MEL of pack 1. Noticing this; the Captain then asked for a descent back to FL180. ATC was notified that our pressurization system was not functioning as it should; and a descent was approved back down to FL180. While descending back down to FL180 the cabin altitude continued to climb slowly. The crew then decided to be proactive and ask for a descent down to 10;000 feet. On the way down to 10;000 feet; the cabin altitude increased to 10;500 feet. and gave an alert until level at 10;000 feet. Subsequently; the aircraft began to pressurize again. Dispatch was notified and asked if at the new altitude fuel was efficient to continue to our destination and confirmed it was. Shortly after a pack 2 overheat was presented on the EICAS. The checklists were followed and the remainder of the flight was uneventful.
Data retrieved from NASA's ASRS site 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.