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An MD90 was dispatched in non compliance with a removed engine instrument probe left inside the cowling incurring damage to the cowling.
| Attributes | |
| ACN | 455313 |
| Time | |
| Date | 199911 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Weather Elements | Snow Rain |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | MD-90 Series (DC-9-90) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| Experience | maintenance technician : 15 |
| ASRS Report | 455313 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : lead technician oversight : supervisor |
| Qualification | technician : airframe technician : powerplant |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : published procedure |
| Independent Detector | other other : 2 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : schedule pressure contributing factor : weather contributing factor : lighting performance deficiency : inspection performance deficiency : repair |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft Company |
| Primary Problem | Maintenance Human Performance |
Narrative:
After installation of EPR probe #2 engine, the removed probe was unintentionally left on top of #2 engine inside the cowl. The aircraft flew from ZZZ-dfw where dfw mechanics discovered probe with minor cowl damage evident. No other defects found. The cowl was repaired, part was removed, and aircraft returned to service. Some of the factors of why the removed probe was left on engine: 1) WX conditions -- snow, sleet, rain, lighting, darkness. 2) not enough help -- other mechanics busy. 3) distrs -- on delay and maintenance tower calling every 10 mins, dealing with air carrier engineers concerning sealant issue on probe. 4) I checked my work area after completion of probe installation, but failed to notice the probe on top of engine.
Original NASA ASRS Text
Title: AN MD90 WAS DISPATCHED IN NON COMPLIANCE WITH A REMOVED ENG INST PROBE LEFT INSIDE THE COWLING INCURRING DAMAGE TO THE COWLING.
Narrative: AFTER INSTALLATION OF EPR PROBE #2 ENG, THE REMOVED PROBE WAS UNINTENTIONALLY LEFT ON TOP OF #2 ENG INSIDE THE COWL. THE ACFT FLEW FROM ZZZ-DFW WHERE DFW MECHS DISCOVERED PROBE WITH MINOR COWL DAMAGE EVIDENT. NO OTHER DEFECTS FOUND. THE COWL WAS REPAIRED, PART WAS REMOVED, AND ACFT RETURNED TO SVC. SOME OF THE FACTORS OF WHY THE REMOVED PROBE WAS LEFT ON ENG: 1) WX CONDITIONS -- SNOW, SLEET, RAIN, LIGHTING, DARKNESS. 2) NOT ENOUGH HELP -- OTHER MECHS BUSY. 3) DISTRS -- ON DELAY AND MAINT TWR CALLING EVERY 10 MINS, DEALING WITH ACR ENGINEERS CONCERNING SEALANT ISSUE ON PROBE. 4) I CHKED MY WORK AREA AFTER COMPLETION OF PROBE INSTALLATION, BUT FAILED TO NOTICE THE PROBE ON TOP OF ENG.
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.