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Two mechanics and two pilots report about a recurring left hydraulic system reservoir light illuminating on a B757-200 aircraft. Engine runs were performed by both mechanics with passengers onboard to correct the hydraulic system discrepancy without a pilot in the cockpit.
| Attributes | |
| ACN | 975253 |
| Time | |
| Date | 201110 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Hydraulic Syst Pressure/Temp Indication |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Airframe Maintenance Powerplant |
| Person 2 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 240 Flight Crew Total 18500 Flight Crew Type 6800 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural FAR Deviation - Procedural Published Material / Policy |
Narrative:
After departure time the captain wrote up the left hydraulic system low pressure light. We found a service tip from the maintenance manual (M/M). I showed the captain the service tip and told him we needed an engine run. He saw the service tip while sitting in the left seat and said to me 'well we'll get out so you can do your thing'. He and the first officer left the cockpit; so we took that as if he didn't want to do the run; so maintenance proceeded to do the [engine] run to avoid any further delays. The captain and the first officer were standing by door-1 left; while we ran the engine and didn't say anything. After the engine run was completed; and we exited the aircraft; the pilot said he was going to file a report because we ran the engine with passengers on board.
Original NASA ASRS Text
Title: Two mechanics and two pilots report about a recurring left hydraulic system reservoir light illuminating on a B757-200 aircraft. Engine runs were performed by both mechanics with passengers onboard to correct the hydraulic system discrepancy without a pilot in the cockpit.
Narrative: After departure time the Captain wrote up the left hydraulic system low pressure light. We found a service tip from the Maintenance Manual (M/M). I showed the Captain the service tip and told him we needed an engine run. He saw the service tip while sitting in the left seat and said to me 'well we'll get out so you can do your thing'. He and the First Officer left the cockpit; so we took that as if he didn't want to do the run; so Maintenance proceeded to do the [engine] run to avoid any further delays. The Captain and the First Officer were standing by Door-1 Left; while we ran the engine and didn't say anything. After the engine run was completed; and we exited the aircraft; the pilot said he was going to file a report because we ran the engine with passengers on board.
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.