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EMB145 flight crew experienced a pressurization problem when the packs were configured wrong on departure.
| Attributes | |
| ACN | 688762 |
| Time | |
| Date | 200602 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : mdt.airport |
| State Reference | PA |
| Altitude | msl bound lower : 18000 msl bound upper : 26000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | EMB ERJ 145 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : initial |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 100 flight time total : 4500 flight time type : 3000 |
| ASRS Report | 688762 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial |
| Experience | flight time last 90 days : 200 flight time total : 3500 flight time type : 500 |
| ASRS Report | 689042 |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : company policies |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | flight crew : overcame equipment problem |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Aircraft |
| Primary Problem | Flight Crew Human Performance |
Narrative:
Climbing through FL180 we noticed the cabin rate of climb was high (1000 FPM). I had noticed this situation before on a previous aircraft; and suspected it was an automatic-pressurization system failure. We ran the QRH checklist to no avail; and requested 10000 ft from ATC. On our descent; I contacted company and maintenance to see if we could proceed to ord at 10000 ft. In the time it took for descent; the cabin altitude reached 14500 ft and the masks dropped. Soon after that the first officer pointed out that I had not switched over to engine bleed source when I shut down the APU. I discussed this factor with maintenance and we concurred that this was the problem. We reselected automatic-pressurization mode. It worked normally and we proceeded to ord with no further problems. The flight attendant said the passenger were fine; reading newspapers; sleeping; etc.
Original NASA ASRS Text
Title: EMB145 FLT CREW EXPERIENCED A PRESSURIZATION PROB WHEN THE PACKS WERE CONFIGURED WRONG ON DEP.
Narrative: CLBING THROUGH FL180 WE NOTICED THE CABIN RATE OF CLB WAS HIGH (1000 FPM). I HAD NOTICED THIS SITUATION BEFORE ON A PREVIOUS ACFT; AND SUSPECTED IT WAS AN AUTO-PRESSURIZATION SYS FAILURE. WE RAN THE QRH CHKLIST TO NO AVAIL; AND REQUESTED 10000 FT FROM ATC. ON OUR DSCNT; I CONTACTED COMPANY AND MAINT TO SEE IF WE COULD PROCEED TO ORD AT 10000 FT. IN THE TIME IT TOOK FOR DSCNT; THE CABIN ALT REACHED 14500 FT AND THE MASKS DROPPED. SOON AFTER THAT THE FO POINTED OUT THAT I HAD NOT SWITCHED OVER TO ENG BLEED SOURCE WHEN I SHUT DOWN THE APU. I DISCUSSED THIS FACTOR WITH MAINT AND WE CONCURRED THAT THIS WAS THE PROB. WE RESELECTED AUTO-PRESSURIZATION MODE. IT WORKED NORMALLY AND WE PROCEEDED TO ORD WITH NO FURTHER PROBS. THE FLT ATTENDANT SAID THE PAX WERE FINE; READING NEWSPAPERS; SLEEPING; ETC.
Data retrieved from NASA's ASRS site as of January 2009 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.