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A line mechanic was informed [that] a crj-200 was out of service due to a right engine fire bottle light would not illuminate during a cockpit preflight test. Mechanic had replaced the same fire bottle two weeks earlier; but the cockpit 'press to test' procedure was not part of the maintenance manual fire bottle installation procedures.
| Attributes | |
| ACN | 932591 |
| Time | |
| Date | 201101 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Dawn |
| Aircraft 1 | |
| Make Model Name | Regional Jet CL65 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Powerplant Fire Extinguishing |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Powerplant Maintenance Airframe |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
I was notified that aircraft X; a crj-200; was broke all day for a right engine fire bottle light [that] would not illuminate. I was informed that a [line] mechanic stated he found a cap that was not removed [from fire bottle]. This was the only engine fire bottle that I have ever replaced. Because of that; I printed the aircraft maintenance manual (amm) task 26-21-07 (removal/install) to make sure I had the correct fire bottle.I followed each step and removed the caps and placed them on the returned [removed] fire bottle. I installed three cannon plugs and two discharge lines and four bolts as required. I then printed amm task 26-21-07. I followed the task and all tested good. I received both squib messages on both tests. The was no 'engine btl lo' message either. The procedure that this pilot performed is; [to] my understanding; done before each flight; as well as every #2 line check.I am not sure if anything could be done differently since I know I followed procedures. I would suggest adding the procedure that the flight crews perform to the amm task. I am surprised that after reading it again that it isn't part of that task.
Original NASA ASRS Text
Title: A Line Mechanic was informed [that] a CRJ-200 was out of service due to a right engine fire bottle light would not illuminate during a cockpit preflight test. Mechanic had replaced the same fire bottle two weeks earlier; but the cockpit 'press to test' procedure was not part of the maintenance manual fire bottle installation procedures.
Narrative: I was notified that aircraft X; a CRJ-200; was broke all day for a right engine fire bottle light [that] would not illuminate. I was informed that a [Line] Mechanic stated he found a cap that was not removed [from fire bottle]. This was the only engine fire bottle that I have ever replaced. Because of that; I printed the Aircraft Maintenance Manual (AMM) task 26-21-07 (removal/install) to make sure I had the correct fire bottle.I followed each step and removed the caps and placed them on the returned [removed] fire bottle. I installed three cannon plugs and two discharge lines and four bolts as required. I then printed AMM task 26-21-07. I followed the task and all tested good. I received both squib messages on both tests. The was no 'ENG BTL LO' message either. The procedure that this pilot performed is; [to] my understanding; done before each flight; as well as every #2 line check.I am not sure if anything could be done differently since I know I followed procedures. I would suggest adding the procedure that the flight crews perform to the AMM task. I am surprised that after reading it again that it isn't part of that task.
Data retrieved from NASA's ASRS site as of April 2012 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.