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A mechanic reports an erj-175 aircraft returned to the gate with a write-up for an auto shutdown of number 1 engine on takeoff roll. He had reinstalled a low stage bleed check valve on the same engine earlier and performed a functional check with engine runs. Mechanic notes that fatigue was a factor in his incorrectly reinstalling the bleed check valve.
| Attributes | |
| ACN | 1077776 |
| Time | |
| Date | 201303 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Dawn |
| Aircraft 1 | |
| Make Model Name | EMB ERJ 170/175 ER/LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Compressor Bleed Valve |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Airframe Maintenance Powerplant |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy |
Narrative:
I was tasked with the functional check of the number 1 engine low stage bleed check valve. On the re-install of the valve; I accidentally oriented it backwards and installed it. After it was put back together we went to the blast wall to run the engine. On the first engine run we had a bleed-1 fail message come on the EICAS. We reset everything and ran the engine again at power with the APU bleed off; this time no message came into view. We ran the engine a few more times to confirm nothing was wrong and didn't receive any abnormal indications. Approximately early morning local time; the aircraft returned to the gate with a write-up stating that the number one engine [had] shut down on takeoff roll at thirty percent power. Per maintenance control; we returned to the hangar to verify the installation of the check valve and found that it had been improperly installed. This was my 'monday.' at the time of re-install I was up for approximately 18 hours. This is a job I have done before and familiar with; I was tired and installed it incorrectly. I was fatigued and not aware of the fact that I had installed it backwards.
Original NASA ASRS Text
Title: A Mechanic reports an ERJ-175 aircraft returned to the gate with a write-up for an auto shutdown of Number 1 Engine on takeoff roll. He had reinstalled a Low Stage Bleed Check Valve on the same engine earlier and performed a Functional Check with engine runs. Mechanic notes that fatigue was a factor in his incorrectly reinstalling the Bleed Check valve.
Narrative: I was tasked with the Functional Check of the Number 1 Engine Low Stage Bleed Check Valve. On the re-install of the valve; I accidentally oriented it backwards and installed it. After it was put back together we went to the blast wall to run the engine. On the first engine run we had a Bleed-1 fail message come on the EICAS. We reset everything and ran the engine again at power with the APU bleed off; this time no message came into view. We ran the engine a few more times to confirm nothing was wrong and didn't receive any abnormal indications. Approximately early morning local time; the aircraft returned to the gate with a write-up stating that the Number One Engine [had] shut down on takeoff roll at thirty percent power. Per Maintenance Control; we returned to the hangar to verify the installation of the Check Valve and found that it had been improperly installed. This was my 'Monday.' At the time of re-install I was up for approximately 18 hours. This is a job I have done before and familiar with; I was tired and installed it incorrectly. I was fatigued and not aware of the fact that I had installed it backwards.
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.