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A maintenance controller and line mechanic report about applying an incorrect MEL to a crj-700 aircraft when they deferred both aircraft clocks under an MEL for one clock. The main battery charger was also deferred requiring both clocks; the flight data recorder (fdr) and the main battery be deferred under different mels.
| Attributes | |
| ACN | 1025311 |
| Time | |
| Date | 201207 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Regional Jet 700 ER/LR (CRJ700) |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | DC Battery |
| Person 1 | |
| Function | Other / Unknown |
| Qualification | Maintenance Powerplant Maintenance Airframe |
| Person 2 | |
| Function | Technician |
| Qualification | Maintenance Powerplant Maintenance Airframe |
| Experience | Maintenance Technician 1 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural MEL |
Narrative:
Crj-700 aircraft which had; main battery voltage dropped throughout flight in ZZZ1. Called out maintenance to defer the main battery charger per MEL 24-32-02 which also calls out for deferring the main battery; flight data recorder (fdr) and both clocks. I accidentally selected the incorrect MEL 31-21-01a; instead of MEL 31-21-01b in saber maintenance program that was similar; but wasn't the most restrictive. I did not catch my mistake and deferred incorrectly in saber program and on aircraft logbook as well. I recognize my mistake; it was an incorrect mouse click on my part. I was under pressure to minimize maintenance delays for the airlines and for passengers. I was stressed in my personal life and having starting my new 12-hour schedule change;rotating work schedule; plus the fact that I was having to do 'everything' with my new job and dealing with an incident that happened five months ago in the ZZZ2 hanger which I will have to testify in court for another mechanic/ former supervisor.
Original NASA ASRS Text
Title: A Maintenance Controller and Line Mechanic report about applying an incorrect MEL to a CRJ-700 aircraft when they deferred both aircraft clocks under an MEL for one clock. The Main Battery Charger was also deferred requiring both clocks; the Flight Data Recorder (FDR) and the Main Battery be deferred under different MELs.
Narrative: CRJ-700 aircraft which had; Main Battery voltage dropped throughout flight in ZZZ1. Called out Maintenance to defer the Main Battery Charger per MEL 24-32-02 which also calls out for deferring the Main Battery; Flight Data Recorder (FDR) and both clocks. I accidentally selected the incorrect MEL 31-21-01a; instead of MEL 31-21-01b in Saber Maintenance Program that was similar; but wasn't the most restrictive. I did not catch my mistake and deferred incorrectly in Saber program and on Aircraft Logbook as well. I recognize my mistake; it was an incorrect mouse click on my part. I was under pressure to minimize Maintenance delays for the airlines and for passengers. I was stressed in my personal life and having starting my new 12-hour schedule change;rotating work schedule; plus the fact that I was having to do 'everything' with my new job and dealing with an incident that happened five months ago in the ZZZ2 Hanger which I will have to testify in court for another Mechanic/ former Supervisor.
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.