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Flight crew of medium large transport unable to pressurize aircraft in climb. Returned to clt for landing and maintenance.
| Attributes | |
| ACN | 165860 |
| Time | |
| Date | 199012 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : clt |
| State Reference | NC |
| Altitude | agl bound lower : 10400 agl bound upper : 10400 |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Controlling Facilities | tracon : clt |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude descent other landing other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 250 flight time total : 10000 flight time type : 1000 |
| ASRS Report | 165850 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : commercial pilot : instrument pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : less severe other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | other |
| Consequence | Other Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
Aircraft failed to pressurize after takeoff. Decided to return to clt. No irregularities, great aircraft handling by ATC. No emergency was declared. Captain decided to return to land. Maintenance was to investigate malfunction. First officer flew aircraft whole time (takeoff to landing). Callback conversation with reporter revealed the following: maintenance found a malfunctioning amplifier that controllers the pressurization outflow valve. Valve was inoperative. Good decision to return and land for maintenance inspection.
Original NASA ASRS Text
Title: FLT CREW OF MLG UNABLE TO PRESSURIZE ACFT IN CLIMB. RETURNED TO CLT FOR LNDG AND MAINTENANCE.
Narrative: ACFT FAILED TO PRESSURIZE AFTER TKOF. DECIDED TO RETURN TO CLT. NO IRREGULARITIES, GREAT ACFT HANDLING BY ATC. NO EMER WAS DECLARED. CAPT DECIDED TO RETURN TO LAND. MAINT WAS TO INVESTIGATE MALFUNCTION. F/O FLEW ACFT WHOLE TIME (TKOF TO LNDG). CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING: MAINT FOUND A MALFUNCTIONING AMPLIFIER THAT CTLRS THE PRESSURIZATION OUTFLOW VALVE. VALVE WAS INOP. GOOD DECISION TO RETURN AND LAND FOR MAINT INSPECTION.
Data retrieved from NASA's ASRS site as of July 2007 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.