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An MD80 was dispatched in non compliance with the nose gear shock strut piston replaced with a robbed unit using the incorrect upper bearing.
| Attributes | |
| ACN | 509652 |
| Time | |
| Date | 200104 |
| Day | Mon |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | MD-80 Super 80 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : parked |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : inspector |
| Qualification | technician : inspection authority |
| ASRS Report | 509652 |
| Person 2 | |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| Experience | maintenance technician : 17 |
| ASRS Report | 509651 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : published procedure non adherence : far |
| Independent Detector | other other : 969 |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : manuals contributing factor : non availability of parts contributing factor : work cards performance deficiency : scheduled maintenance performance deficiency : installation |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft Chart Or Publication |
| Primary Problem | Maintenance Human Performance |
Narrative:
At approximately XB00, air carrier X arrived to the hangar for nose gear inner cylinder replacement due to chrome peeling off. The aircraft was jacked and inner cylinder removed. At that point order came in to remove nose inner cylinder from aircraft which was in for 14 check inspector. The mechanic went to aircraft, and removed the inner cylinder. By that time it was approximately XD00 hours. That's when I left for home. Callback conversation with reporter revealed the following information: the reporter stated no one bothered to check the effectivity of the upper bearing on the robbed aircraft as everyone knows the strut pistons are interchangeable on all MD80 aircraft. The reporter said checking the maintenance manual it was noted the heavy and light upper bearings and the airplane number effectivity. The reporter stated the wrong upper piston bearing was installed with the robbed lower strut piston.
Original NASA ASRS Text
Title: AN MD80 WAS DISPATCHED IN NON COMPLIANCE WITH THE NOSE GEAR SHOCK STRUT PISTON REPLACED WITH A ROBBED UNIT USING THE INCORRECT UPPER BEARING.
Narrative: AT APPROX XB00, ACR X ARRIVED TO THE HANGAR FOR NOSE GEAR INNER CYLINDER REPLACEMENT DUE TO CHROME PEELING OFF. THE ACFT WAS JACKED AND INNER CYLINDER REMOVED. AT THAT POINT ORDER CAME IN TO REMOVE NOSE INNER CYLINDER FROM ACFT WHICH WAS IN FOR 14 CHK INSPECTOR. THE MECH WENT TO ACFT, AND REMOVED THE INNER CYLINDER. BY THAT TIME IT WAS APPROX XD00 HRS. THAT'S WHEN I LEFT FOR HOME. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED NO ONE BOTHERED TO CHK THE EFFECTIVITY OF THE UPPER BEARING ON THE ROBBED ACFT AS EVERYONE KNOWS THE STRUT PISTONS ARE INTERCHANGEABLE ON ALL MD80 ACFT. THE RPTR SAID CHKING THE MAINT MANUAL IT WAS NOTED THE HVY AND LIGHT UPPER BEARINGS AND THE AIRPLANE NUMBER EFFECTIVITY. THE RPTR STATED THE WRONG UPPER PISTON BEARING WAS INSTALLED WITH THE ROBBED LOWER STRUT PISTON.
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.