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A emb-135 mechanic installed a new 'a' mod igniter exciter box on the #1 engine; inboard side. Indication line not capped as called out in the service bulletin.
| Attributes | |
| ACN | 758688 |
| Time | |
| Date | 200710 |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | EMB ERJ 140 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| ASRS Report | 758688 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : published procedure non adherence : far |
| Independent Detector | aircraft equipment other aircraft equipment : ignition problems |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | performance deficiency : installation performance deficiency : non compliance with legal requirements performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Aircraft Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
I worked on aircraft X on oct/xa/07. I was assigned to work on the #1 engine. The aircraft was outside the hangar ZZZ. I changed the 'a' exciter 'inboard on the engine.' I was not aware that the service bulletin said; if you install a new mod exciter that you have to cap the indication line; because on a new mod exciter there is only 1 port to hook 1 line to and that line is the 'a' line. Instead of capping the line like the service bulletin says to I bagged and zip-tagged the line. The #1 engine was having ignition problems; so when they went in to change the exciter box they found the line did not have the proper cap on it. They went aog for a new harness; finding that the harness was the problem for the ignition not working properly. I did not read the service bulletin. Always look for engineering notes service bulletins.
Original NASA ASRS Text
Title: A EMB-135 MECHANIC INSTALLED A NEW 'A' MOD IGNITER EXCITER BOX ON THE #1 ENG; INBOARD SIDE. INDICATION LINE NOT CAPPED AS CALLED OUT IN THE SERVICE BULLETIN.
Narrative: I WORKED ON ACFT X ON OCT/XA/07. I WAS ASSIGNED TO WORK ON THE #1 ENG. THE ACFT WAS OUTSIDE THE HANGAR ZZZ. I CHANGED THE 'A' EXCITER 'INBOARD ON THE ENG.' I WAS NOT AWARE THAT THE SVC BULLETIN SAID; IF YOU INSTALL A NEW MOD EXCITER THAT YOU HAVE TO CAP THE INDICATION LINE; BECAUSE ON A NEW MOD EXCITER THERE IS ONLY 1 PORT TO HOOK 1 LINE TO AND THAT LINE IS THE 'A' LINE. INSTEAD OF CAPPING THE LINE LIKE THE SVC BULLETIN SAYS TO I BAGGED AND ZIP-TAGGED THE LINE. THE #1 ENG WAS HAVING IGNITION PROBS; SO WHEN THEY WENT IN TO CHANGE THE EXCITER BOX THEY FOUND THE LINE DID NOT HAVE THE PROPER CAP ON IT. THEY WENT AOG FOR A NEW HARNESS; FINDING THAT THE HARNESS WAS THE PROB FOR THE IGNITION NOT WORKING PROPERLY. I DID NOT READ THE SVC BULLETIN. ALWAYS LOOK FOR ENGINEERING NOTES SVC BULLETINS.
Data retrieved from NASA's ASRS site as of January 2009 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.