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A B737-300 was dispatched in non compliance with the alternate static ports taped over for maintenance and not removed.
| Attributes | |
| ACN | 452642 |
| Time | |
| Date | 199910 |
| Day | Fri |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : parked ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| Experience | maintenance technician : 2 |
| ASRS Report | 452642 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| Experience | maintenance technician : 20 |
| ASRS Report | 452646 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : published procedure non adherence : far |
| Independent Detector | other other : ns |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : testing performance deficiency : repair |
| Supplementary | |
| Problem Areas | Aircraft Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
Air carrier aircraft xyz arrived in atlanta from ZZZ, where it was found to have tape over both alternate static ports. On oct/thu/99 XA00 pm, zxb wxyx and I were dispatched from abc to work on aircraft xyz in ZZZ (united states) for a split altimeter reading. On arriving at ZZZ zxb started setting up the test equipment. I took the aircraft maintenance manual and started getting the aircraft's pitot/static system ready to be tested. Per the aircraft maintenance manual one of the steps is to place tape over both alternate static ports. The test revealed that the upper pitot tube on the captain's side was bad. After changing out the pitot tube and the aircraft's pitot/static system passing well within limits as outlined in the aircraft's maintenance manual. Let me note here that the only tape I had available to me at the time was aluminum speed tape so I folded over one end of the tape to make a pull tab to aid in the removal of the speed tape and placed it over the alternate static ports. After completion of the work I informed zxb that as he filled out the logbook and parts tags I would secure the test equipment in preparation for the return to abc. In my haste to get back to abc I neglected to remove the tape from both alternate static ports.
Original NASA ASRS Text
Title: A B737-300 WAS DISPATCHED IN NON COMPLIANCE WITH THE ALTERNATE STATIC PORTS TAPED OVER FOR MAINT AND NOT REMOVED.
Narrative: ACR ACFT XYZ ARRIVED IN ATLANTA FROM ZZZ, WHERE IT WAS FOUND TO HAVE TAPE OVER BOTH ALTERNATE STATIC PORTS. ON OCT/THU/99 XA00 PM, ZXB WXYX AND I WERE DISPATCHED FROM ABC TO WORK ON ACFT XYZ IN ZZZ (UNITED STATES) FOR A SPLIT ALTIMETER READING. ON ARRIVING AT ZZZ ZXB STARTED SETTING UP THE TEST EQUIP. I TOOK THE ACFT MAINT MANUAL AND STARTED GETTING THE ACFT'S PITOT/STATIC SYS READY TO BE TESTED. PER THE ACFT MAINT MANUAL ONE OF THE STEPS IS TO PLACE TAPE OVER BOTH ALTERNATE STATIC PORTS. THE TEST REVEALED THAT THE UPPER PITOT TUBE ON THE CAPT'S SIDE WAS BAD. AFTER CHANGING OUT THE PITOT TUBE AND THE ACFT'S PITOT/STATIC SYS PASSING WELL WITHIN LIMITS AS OUTLINED IN THE ACFT'S MAINT MANUAL. LET ME NOTE HERE THAT THE ONLY TAPE I HAD AVAILABLE TO ME AT THE TIME WAS ALUMINUM SPD TAPE SO I FOLDED OVER ONE END OF THE TAPE TO MAKE A PULL TAB TO AID IN THE REMOVAL OF THE SPD TAPE AND PLACED IT OVER THE ALTERNATE STATIC PORTS. AFTER COMPLETION OF THE WORK I INFORMED ZXB THAT AS HE FILLED OUT THE LOGBOOK AND PARTS TAGS I WOULD SECURE THE TEST EQUIP IN PREPARATION FOR THE RETURN TO ABC. IN MY HASTE TO GET BACK TO ABC I NEGLECTED TO REMOVE THE TAPE FROM BOTH ALTERNATE STATIC PORTS.
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.