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A line mechanic reports he deferred a #2 engine oil impeller bypass message on an emb-145 aircraft after referencing maintenance actions that he and another mechanic had performed. He was later notified the fault isolation manual (fim); which he did not use; would have been a better reference souce for the deferral.
| Attributes | |
| ACN | 1037829 |
| Time | |
| Date | 201209 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | EMB ERJ 145 ER/LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Oil Filter |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Airframe Maintenance Powerplant |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy |
Narrative:
When myself and another mechanic arrived at the aircraft; we were made aware of an engine #2 (E2) oil impeller bypass message happening during flight; from the logbook. The other mechanic spoke with the pilot(s) and checked the cockpit indications; while I waited outside because the passengers were beginning the boarding process. We were in contact with maintenance control about the message. I spoke with maintenance control in regards to the differential indication on the oil filter. I verified with them that once we opened up the E2 cowl; the red indicator did not appear to be popped and we were advised that the E2 oil impeller bypass message could be MEL'd. From there; the other mechanic communicated that the central maintenance computer (cmc) showed no oil debris message of any sort; while I placed the E2 oil impeller bypass message on deferral. Based on the message and the maintenance actions; MEL 79-35-01-1 was used as the reference. The fault isolation manual (fim) was not used. The fim would have been a better reference; without regard to time. Despite working well in a team manner and communicating well throughout the task; I could have reviewed the other mechanics work.
Original NASA ASRS Text
Title: A Line Mechanic reports he deferred a #2 Engine Oil Impeller Bypass message on an EMB-145 aircraft after referencing maintenance actions that he and another Mechanic had performed. He was later notified the Fault Isolation Manual (FIM); which he did not use; would have been a better reference souce for the deferral.
Narrative: When myself and another Mechanic arrived at the aircraft; we were made aware of an Engine #2 (E2) Oil Impeller Bypass message happening during flight; from the logbook. The other Mechanic spoke with the pilot(s) and checked the cockpit indications; while I waited outside because the passengers were beginning the boarding process. We were in contact with Maintenance Control about the message. I spoke with Maintenance Control in regards to the differential indication on the oil filter. I verified with them that once we opened up the E2 Cowl; the red indicator did not appear to be popped and we were advised that the E2 Oil Impeller Bypass message could be MEL'd. From there; the other Mechanic communicated that the Central Maintenance Computer (CMC) showed no oil debris message of any sort; while I placed the E2 oil impeller bypass message on deferral. Based on the message and the Maintenance actions; MEL 79-35-01-1 was used as the reference. The Fault Isolation Manual (FIM) was not used. The FIM would have been a better reference; without regard to time. Despite working well in a team manner and communicating well throughout the task; I could have reviewed the other mechanics work.
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.