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A maintenance controller reports he took a B757-200 ETOPS aircraft 'out of service' after being informed that a downlock spring had been removed instead of a broken uplock spring he had placed on an MEL. An aircraft maintenance technician (amt) also reports that a lack of an illustration in MEL 32-32-01 contributed to his misidentifying the downlock spring as the uplock spring.
| Attributes | |
| ACN | 1141577 |
| Time | |
| Date | 201312 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Gear Up Lock |
| Person 1 | |
| Function | Other / Unknown |
| Qualification | Maintenance Airframe Maintenance Powerplant |
| Experience | Maintenance Technician 10 |
| Person 2 | |
| Function | Technician |
| Qualification | Maintenance Powerplant Maintenance Airframe Maintenance Avionics |
| Experience | Maintenance Avionics 32 Maintenance Technician 32 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural MEL Deviation - Procedural Published Material / Policy |
Narrative:
Aircraft maintenance technician (amt) called maintenance control to MEL a damaged uplock spring on B757 aircraft as per MEL 32-32-01. I reviewed the MEL requirements with the technician and asked if the spring was removed to comply with the MEL. Technician confirmed the uplock spring was removed and I then issued the MEL.aircraft departed; upon arrival local maintenance reported that there was a missing downlock spring on the right main landing gear (medium large transport). I asked the technician to send me a photograph of missing downlock spring to confirm what was reported. I received photo of the downlock spring and took the aircraft out of service.[I] placed aircraft 'out of service' once it was reported that the downlock spring was removed instead of the uplock spring. [I then] had the correct spring and tooling sent for installation of the downlock spring. MEL 32-32-01 does not include an illustration [for] the uplock spring for identification purposes.
Original NASA ASRS Text
Title: A Maintenance Controller reports he took a B757-200 ETOPS aircraft 'Out of Service' after being informed that a downlock spring had been removed instead of a broken uplock spring he had placed on an MEL. An Aircraft Maintenance Technician (AMT) also reports that a lack of an Illustration in MEL 32-32-01 contributed to his misidentifying the downlock spring as the uplock spring.
Narrative: Aircraft Maintenance Technician (AMT) called Maintenance Control to MEL a damaged uplock spring on B757 aircraft as per MEL 32-32-01. I reviewed the MEL requirements with the Technician and asked if the spring was removed to comply with the MEL. Technician confirmed the uplock spring was removed and I then issued the MEL.Aircraft departed; upon arrival Local Maintenance reported that there was a missing downlock spring on the right Main Landing Gear (MLG). I asked the Technician to send me a photograph of missing downlock spring to confirm what was reported. I received photo of the downlock spring and took the aircraft out of service.[I] placed aircraft 'Out of Service' once it was reported that the downlock spring was removed instead of the uplock spring. [I then] had the correct spring and tooling sent for installation of the downlock spring. MEL 32-32-01 does not include an illustration [for] the uplock spring for identification purposes.
Data retrieved from NASA's ASRS site as of July 2013 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.