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An emb-140 #1 engine was found damaged after the inner bypass duct was temporarily installed for engine runs.
| Attributes | |
| ACN | 770151 |
| Time | |
| Date | 200712 |
| Local Time Of Day | 1801 To 2400 |
| 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 |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 770151 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : published procedure non adherence : far |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : weather contributing factor : briefing performance deficiency : testing performance deficiency : installation |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft Environmental Factor |
| Primary Problem | Maintenance Human Performance |
Narrative:
Myself; mr X; mr Y; and mr Z were on a road trip to ZZZ to troubleshoot a high N2 condition on aircraft X #1 engine. After we ran the engines several times; and with the help of maintenance control and the rolls royce representative; lubed the cvg actuator. We then temporarily installed the l-hand inner bypass duct. After myself and mr Y ran the engines for 30-45 seconds; we seen mr Z waving to shut down; and we did. When we stepped out of the aircraft and seen that the inner bypass panel had come loose. Mr X then called maintenance control to notify them of the situation. After shutdown; we looked inside the #1 engine and seen that the inner bypass was damaged. We were out on the ramp where the temperature was below freezing. Because we were on the road trip we did not have the resources to have all the maintenance manual. While on road trips need to slow down and think things through. Always have more than 1 person watching; have the proper technical data; and watch the environmental factors.
Original NASA ASRS Text
Title: AN EMB-140 #1 ENG WAS FOUND DAMAGED AFTER THE INNER BYPASS DUCT WAS TEMPORARILY INSTALLED FOR ENGINE RUNS.
Narrative: MYSELF; MR X; MR Y; AND MR Z WERE ON A ROAD TRIP TO ZZZ TO TROUBLESHOOT A HIGH N2 CONDITION ON ACFT X #1 ENG. AFTER WE RAN THE ENGS SEVERAL TIMES; AND WITH THE HELP OF MAINT CTL AND THE ROLLS ROYCE REPRESENTATIVE; LUBED THE CVG ACTUATOR. WE THEN TEMPORARILY INSTALLED THE L-HAND INNER BYPASS DUCT. AFTER MYSELF AND MR Y RAN THE ENGS FOR 30-45 SECONDS; WE SEEN MR Z WAVING TO SHUT DOWN; AND WE DID. WHEN WE STEPPED OUT OF THE ACFT AND SEEN THAT THE INNER BYPASS PANEL HAD COME LOOSE. MR X THEN CALLED MAINT CTL TO NOTIFY THEM OF THE SITUATION. AFTER SHUTDOWN; WE LOOKED INSIDE THE #1 ENG AND SEEN THAT THE INNER BYPASS WAS DAMAGED. WE WERE OUT ON THE RAMP WHERE THE TEMP WAS BELOW FREEZING. BECAUSE WE WERE ON THE ROAD TRIP WE DID NOT HAVE THE RESOURCES TO HAVE ALL THE MAINT MANUAL. WHILE ON ROAD TRIPS NEED TO SLOW DOWN AND THINK THINGS THROUGH. ALWAYS HAVE MORE THAN 1 PERSON WATCHING; HAVE THE PROPER TECHNICAL DATA; AND WATCH THE ENVIRONMENTAL FACTORS.
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.