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A B737-300 depressurized in-flight and 3 passenger emergency oxygen masks were found not usable due to improper maintenance.
| Attributes | |
| ACN | 546357 |
| Time | |
| Date | 200204 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Controlling Facilities | tower : dsm.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : fcc technician : powerplant |
| Experience | maintenance technician : 20 |
| ASRS Report | 546357 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : published procedure non adherence : far |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : non compliance with legal requirements performance deficiency : testing performance deficiency : installation performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
On mar/sun/02 aircraft XXX depressurized in-flight and masks deployed. Psu at row 1D and F deployed but were not attached to manifold. Psu at row 18 did not fully deploy and had to be opened by flight attendant. On or around feb/thu/01 I performed check of passenger oxygen system/mask/oxygen generator at rows 10 thru 16 in accordance with job card. All psu's operated properly at that time and detailed inspection of rows 10 thru 16 checked satisfactory.
Original NASA ASRS Text
Title: A B737-300 DEPRESSURIZED INFLT AND 3 PAX EMER OXYGEN MASKS WERE FOUND NOT USABLE DUE TO IMPROPER MAINT.
Narrative: ON MAR/SUN/02 ACFT XXX DEPRESSURIZED INFLT AND MASKS DEPLOYED. PSU AT ROW 1D AND F DEPLOYED BUT WERE NOT ATTACHED TO MANIFOLD. PSU AT ROW 18 DID NOT FULLY DEPLOY AND HAD TO BE OPENED BY FLT ATTENDANT. ON OR AROUND FEB/THU/01 I PERFORMED CHK OF PAX OXYGEN SYS/MASK/OXYGEN GENERATOR AT ROWS 10 THRU 16 IN ACCORDANCE WITH JOB CARD. ALL PSU'S OPERATED PROPERLY AT THAT TIME AND DETAILED INSPECTION OF ROWS 10 THRU 16 CHKED SATISFACTORY.
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.