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Flight crew of a DC9 returned to land after they heard outside air noises and the aircraft would not pressurize.
| Attributes | |
| ACN | 433224 |
| Time | |
| Date | 199904 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : dtw.airport |
| State Reference | MI |
| Altitude | msl bound lower : 1500 msl bound upper : 6000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : d21.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : initial other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : multi engine pilot : commercial |
| Experience | flight time last 90 days : 300 flight time total : 8800 flight time type : 2000 |
| ASRS Report | 433224 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance |
| Independent Detector | aircraft equipment other aircraft equipment : pressurization other flight crewa other flight crewb |
| Resolutory Action | flight crew : landed as precaution other |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
Departed on a scheduled passenger flight to florida. Upon rotation, an excessive amount of airstream noise was noted by myself and the first officer. Since we had not flown this particular aircraft (it is new to the company) we were not sure if this was a normal characteristic of this aircraft. Climbing through 1500 ft MSL, it became clear that the aircraft was not pressurizing. After checking for all the probable causes for this situation, I decided that the problem could not be fixed in-flight. We leveled at 6000 ft MSL with ATC clearance and requested a return to the airport. Approximately 5 mins after landing, the forward compartment access door annunciator light illuminated. Upon return to the gate, maintenance resecured the door and returned the aircraft to service. Mechanics apologized for not securing the door following maintenance that night.
Original NASA ASRS Text
Title: FLC OF A DC9 RETURNED TO LAND AFTER THEY HEARD OUTSIDE AIR NOISES AND THE ACFT WOULD NOT PRESSURIZE.
Narrative: DEPARTED ON A SCHEDULED PAX FLT TO FLORIDA. UPON ROTATION, AN EXCESSIVE AMOUNT OF AIRSTREAM NOISE WAS NOTED BY MYSELF AND THE FO. SINCE WE HAD NOT FLOWN THIS PARTICULAR ACFT (IT IS NEW TO THE COMPANY) WE WERE NOT SURE IF THIS WAS A NORMAL CHARACTERISTIC OF THIS ACFT. CLBING THROUGH 1500 FT MSL, IT BECAME CLR THAT THE ACFT WAS NOT PRESSURIZING. AFTER CHKING FOR ALL THE PROBABLE CAUSES FOR THIS SIT, I DECIDED THAT THE PROB COULD NOT BE FIXED INFLT. WE LEVELED AT 6000 FT MSL WITH ATC CLRNC AND REQUESTED A RETURN TO THE ARPT. APPROX 5 MINS AFTER LNDG, THE FORWARD COMPARTMENT ACCESS DOOR ANNUNCIATOR LIGHT ILLUMINATED. UPON RETURN TO THE GATE, MAINT RESECURED THE DOOR AND RETURNED THE ACFT TO SVC. MECHS APOLOGIZED FOR NOT SECURING THE DOOR FOLLOWING MAINT THAT NIGHT.
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.