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A B737-300 was dispatched in non compliance with the right and left aileron balance panel seals and seal retainers not installed.
| Attributes | |
| ACN | 563709 |
| Time | |
| Date | 200210 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| 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 : inspector |
| Qualification | technician : inspection authority technician : airframe technician : powerplant |
| Experience | maintenance technician : 17 |
| ASRS Report | 563709 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : inspector |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : published procedure non adherence : far non adherence : company policies |
| Independent Detector | other other : person 1 |
| Resolutory Action | none taken : detected after the fact other |
| Consequence | faa : investigated other other other |
| Factors | |
| Maintenance | contributing factor : engineering procedure contributing factor : work cards performance deficiency : training performance deficiency : scheduled maintenance performance deficiency : repair performance deficiency : non compliance with legal requirements performance deficiency : inspection performance deficiency : installation |
| Supplementary | |
| Problem Areas | Aircraft Company Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
Aircraft X at ZZZ for a heavy maintenance visit had both r-hand and l-hand ailerons reinstalled. Myself and another inspector signed for verifying correct installation. I inspected the r-hand aileron and the other inspector the left. All parts were present and properly installed. 2 or 3 days after the aircraft returned to service, the seal retainer and seal for each aileron balance panel was found in the hangar. Aircraft X was then grounded and inspected. Those parts were missing and the aircraft was ferried to YYY to install the parts. As far as I know this incident did not affect the safe flight of the aircraft. An investigation is in progress to determine when those parts were removed and not reinstalled.
Original NASA ASRS Text
Title: A B737-300 WAS DISPATCHED IN NON COMPLIANCE WITH THE R AND L AILERON BAL PANEL SEALS AND SEAL RETAINERS NOT INSTALLED.
Narrative: ACFT X AT ZZZ FOR A HVY MAINT VISIT HAD BOTH R-HAND AND L-HAND AILERONS REINSTALLED. MYSELF AND ANOTHER INSPECTOR SIGNED FOR VERIFYING CORRECT INSTALLATION. I INSPECTED THE R-HAND AILERON AND THE OTHER INSPECTOR THE L. ALL PARTS WERE PRESENT AND PROPERLY INSTALLED. 2 OR 3 DAYS AFTER THE ACFT RETURNED TO SVC, THE SEAL RETAINER AND SEAL FOR EACH AILERON BAL PANEL WAS FOUND IN THE HANGAR. ACFT X WAS THEN GNDED AND INSPECTED. THOSE PARTS WERE MISSING AND THE ACFT WAS FERRIED TO YYY TO INSTALL THE PARTS. AS FAR AS I KNOW THIS INCIDENT DID NOT AFFECT THE SAFE FLT OF THE ACFT. AN INVESTIGATION IS IN PROGRESS TO DETERMINE WHEN THOSE PARTS WERE REMOVED AND NOT REINSTALLED.
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.