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A mechanic described the events that contributed to his not checking why; a newer type of cockpit portable halon fire bottle could not be installed. Instead; he installed an older style bottle with a pressure gauge that was not effective for that B757-200; even though the illustrated parts catalog (ipc) indicated it was optional equipment.
| Attributes | |
| ACN | 835273 |
| Time | |
| Date | 200905 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Portable Extinguisher |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Airframe Maintenance Avionics Maintenance Powerplant |
| Experience | Maintenance Technician 23 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy |
Narrative:
I installed the wrong fire bottle in the cockpit. I removed a manufacturer part number (mpn) (5-1121) fire extinguisher and installed a mpn (FR5) bottle. I first did try to install the correct bottle; verified per the illustrated parts catalog; but it just would not fit. So I put the optional equipment on; and it fit. The conclusion was that the bracket in the cockpit was the wrong bracket. I should have found that out when the bottle I was trying to install didn't fit. It should have sounded warning bells. But it was a busy night; and I didn't want to spend half the night; trying to figure out why the bottle didn't fit. My assumption is it was just another type of fire bottle. And a fire bottle is a fire bottle. So the wrong bottle was installed.
Original NASA ASRS Text
Title: A Mechanic described the events that contributed to his not checking why; a newer type of cockpit portable halon fire bottle could not be installed. Instead; he installed an older style bottle with a pressure gauge that was not effective for that B757-200; even though the illustrated parts catalog (IPC) indicated it was optional equipment.
Narrative: I installed the wrong fire bottle in the cockpit. I removed a manufacturer part number (MPN) (5-1121) fire extinguisher and installed a MPN (FR5) bottle. I first did try to install the correct bottle; verified per the illustrated parts catalog; but it just would not fit. So I put the optional equipment on; and it fit. The conclusion was that the bracket in the cockpit was the wrong bracket. I should have found that out when the bottle I was trying to install didn't fit. It should have sounded warning bells. But it was a busy night; and I didn't want to spend half the night; trying to figure out why the bottle didn't fit. My assumption is it was just another type of fire bottle. And a fire bottle is a fire bottle. So the wrong bottle was installed.
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.