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An SF340 hydraulic pump autostart function failed to activate when the landing gear handle was selected down; so the standby switch was momentarily activated which resulted in normal gear positioning.
| Attributes | |
| ACN | 978328 |
| Time | |
| Date | 201110 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | SF 340B |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Hydraulic System Pump |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Commercial Flight Crew Flight Instructor Flight Crew Instrument Flight Crew Multiengine |
| Experience | Flight Crew Last 90 Days 50 Flight Crew Total 15000 Flight Crew Type 25 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy |
Narrative:
After the landing gear was selected down; it was noted that the hydraulic pump did not activate as it should. Hence; the left and right main landing gear did not lock into the down position until the standby switch was selected momentarily and returned to the normal position. This action resulted in a normal gear operation allowing a continued normal approach and landing without any further abnormal activity. At no time was there any question that the action stated above would result with any other out come than a normal gear operation.
Original NASA ASRS Text
Title: An SF340 hydraulic pump autostart function failed to activate when the landing gear handle was selected down; so the standby switch was momentarily activated which resulted in normal gear positioning.
Narrative: After the landing gear was selected down; it was noted that the hydraulic pump did not activate as it should. Hence; the left and right main landing gear did not lock into the down position until the standby switch was selected momentarily and returned to the normal position. This action resulted in a normal gear operation allowing a continued normal approach and landing without any further abnormal activity. At no time was there any question that the action stated above would result with any other out come than a normal gear operation.
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.