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A DC9 in cruise at FL330 declared an emergency and diverted due to loss of pressurization. Found water separator clamp loose.
| Attributes | |
| ACN | 660491 |
| Time | |
| Date | 200506 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 30 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| Experience | maintenance technician : 18 |
| ASRS Report | 660491 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : far non adherence : published procedure |
| Independent Detector | aircraft equipment other aircraft equipment : cabin press indicator other flight crewa other flight crewb |
| Resolutory Action | flight crew : diverted to another airport flight crew : declared emergency |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : installation performance deficiency : testing performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Environmental Factor Maintenance Human Performance Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
On may/tue/05; I replaced a coalescer bag on a water separator on a DC9 aircraft X. The next day; the aircraft had to make an emergency descent to 10000 ft from FL330 and diverted to ZZZ1 where the mechanic there found a loose clamp on the water separator I had changed.
Original NASA ASRS Text
Title: A DC9 IN CRUISE AT FL330 DECLARED AN EMER AND DIVERTED DUE TO LOSS OF PRESSURIZATION. FOUND WATER SEPARATOR CLAMP LOOSE.
Narrative: ON MAY/TUE/05; I REPLACED A COALESCER BAG ON A WATER SEPARATOR ON A DC9 ACFT X. THE NEXT DAY; THE ACFT HAD TO MAKE AN EMER DSCNT TO 10000 FT FROM FL330 AND DIVERTED TO ZZZ1 WHERE THE MECH THERE FOUND A LOOSE CLAMP ON THE WATER SEPARATOR I HAD CHANGED.
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.