 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
A SF340 crew discovered zero hydraulic pressure during landing gear extension after the lookdown light illuminated. Normal pressure was restored with the override switch and it was discovered that the pump's low pressure switch failed.
| Attributes | |
| ACN | 920196 |
| Time | |
| Date | 201011 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | SF 340B |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Landing |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Hydraulic System Pump |
| Person 1 | |
| Function | First Officer Pilot Flying |
| Qualification | Flight Crew Commercial |
| Experience | Flight Crew Last 90 Days 1 Flight Crew Total 4500 Flight Crew Type 2500 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
Received hydraulic lookdown light on final approach during gear extension. The main accumulator had 0 psi. We completed the memory items and pilot handbook non normal checklist. In the override position the main held pressure and the quantity was stable. We completed a normal landing. The hydraulic pump failed to operate in the auto mode. The pump functioned normally in the override position.
Original NASA ASRS Text
Title: A SF340 crew discovered zero hydraulic pressure during landing gear extension after the lookdown light illuminated. Normal pressure was restored with the override switch and it was discovered that the pump's low pressure switch failed.
Narrative: Received hydraulic lookdown light on final approach during gear extension. The main accumulator had 0 PSI. We completed the memory items and Pilot Handbook non normal checklist. In the override position the main held pressure and the quantity was stable. We completed a normal landing. The hydraulic pump failed to operate in the auto mode. The pump functioned normally in the override position.
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.