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Pilot of an small transport landed gear up due loss of aircraft hydraulic system and back up hand pump system. Aircraft damage was limited to the fuselage bottom and propellers.
| Attributes | |
| ACN | 288589 |
| Time | |
| Date | 199411 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : fca |
| State Reference | MT |
| Altitude | agl bound lower : 0 agl bound upper : 1000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tower : phl |
| Operator | common carrier : air taxi |
| Make Model Name | Airliner 99 |
| Operating Under FAR Part | Part 135 |
| Flight Phase | descent : approach landing other |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | company : air taxi |
| Function | flight crew : single pilot |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 12 flight time total : 3500 flight time type : 12 |
| ASRS Report | 288589 |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | other |
| Consequence | faa : investigated other Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
Selected landing gear down -- no response -- circuit breaker was popped. Reset breaker -- got 2 main gear down -- circuit breaker popped again. Reset breaker -- got 1 left main gear down -- circuit breaker popped again. Reset breaker -- got in transit light only. No gear down, circuit breaker popped. Try to hand pump manually the gear down -- some back pressure on the pump after 25 counts we lost all back pressure on the manual pump. Kept on pumping 3-4 more times -- counted at least 80 circuits each time. There was no pressure in the pump. Tried g- force to extend the gear -- no response. Landed gear up, with both engines shut down, feathered and fuel off. Came to a stop after about 800 ft. Touch down close to stall speed. Damage to belly, 2 propellers on each side. Hydraulic fluid on the front right side of aircraft.
Original NASA ASRS Text
Title: PLT OF AN SMT LANDED GEAR UP DUE LOSS OF ACFT HYD SYS AND BACK UP HAND PUMP SYS. ACFT DAMAGE WAS LIMITED TO THE FUSELAGE BOTTOM AND PROPS.
Narrative: SELECTED LNDG GEAR DOWN -- NO RESPONSE -- CIRCUIT BREAKER WAS POPPED. RESET BREAKER -- GOT 2 MAIN GEAR DOWN -- CIRCUIT BREAKER POPPED AGAIN. RESET BREAKER -- GOT 1 L MAIN GEAR DOWN -- CIRCUIT BREAKER POPPED AGAIN. RESET BREAKER -- GOT IN TRANSIT LIGHT ONLY. NO GEAR DOWN, CIRCUIT BREAKER POPPED. TRY TO HAND PUMP MANUALLY THE GEAR DOWN -- SOME BACK PRESSURE ON THE PUMP AFTER 25 COUNTS WE LOST ALL BACK PRESSURE ON THE MANUAL PUMP. KEPT ON PUMPING 3-4 MORE TIMES -- COUNTED AT LEAST 80 CIRCUITS EACH TIME. THERE WAS NO PRESSURE IN THE PUMP. TRIED G- FORCE TO EXTEND THE GEAR -- NO RESPONSE. LANDED GEAR UP, WITH BOTH ENGS SHUT DOWN, FEATHERED AND FUEL OFF. CAME TO A STOP AFTER ABOUT 800 FT. TOUCH DOWN CLOSE TO STALL SPD. DAMAGE TO BELLY, 2 PROPS ON EACH SIDE. HYD FLUID ON THE FRONT R SIDE OF ACFT.
Data retrieved from NASA's ASRS site as of July 2007 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.