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An small aircraft pilot had the nose gear retract after touchdown. A leak in the right main hydraulic cylinder caused the hydraulic fluid to be depleted before the nose gear was locked down.
| Attributes | |
| ACN | 396701 |
| Time | |
| Date | 199803 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : 61m |
| State Reference | AR |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | general aviation : personal |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 91 |
| Flight Phase | landing other |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : private |
| Experience | flight time last 90 days : 20 flight time total : 1100 flight time type : 7 |
| ASRS Report | 396701 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : private |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : declared emergency none taken : detected after the fact |
| Consequence | other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
Upon landing and rollout, when the nose came down, the nose gear collapsed. Obviously it was not locked. Following the incident the hydraulic fluid reservoir was examined and found to be nearly empty. The plane had been annualed 3 weeks before. I had purchased the plane 2 weeks prior and had made 6 flts and 30 lndgs. A leak was discovered on the right gear hydraulic cylinder. We believe it only leaked when cycling during the 30 lndgs. We will repair or replace the hydraulic cylinder and also check reservoir often. No injuries.
Original NASA ASRS Text
Title: AN SMA PLT HAD THE NOSE GEAR RETRACT AFTER TOUCHDOWN. A LEAK IN THE R MAIN HYD CYLINDER CAUSED THE HYD FLUID TO BE DEPLETED BEFORE THE NOSE GEAR WAS LOCKED DOWN.
Narrative: UPON LNDG AND ROLLOUT, WHEN THE NOSE CAME DOWN, THE NOSE GEAR COLLAPSED. OBVIOUSLY IT WAS NOT LOCKED. FOLLOWING THE INCIDENT THE HYD FLUID RESERVOIR WAS EXAMINED AND FOUND TO BE NEARLY EMPTY. THE PLANE HAD BEEN ANNUALED 3 WKS BEFORE. I HAD PURCHASED THE PLANE 2 WKS PRIOR AND HAD MADE 6 FLTS AND 30 LNDGS. A LEAK WAS DISCOVERED ON THE R GEAR HYD CYLINDER. WE BELIEVE IT ONLY LEAKED WHEN CYCLING DURING THE 30 LNDGS. WE WILL REPAIR OR REPLACE THE HYD CYLINDER AND ALSO CHK RESERVOIR OFTEN. NO INJURIES.
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.