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C177RG was unable to extend the landing gear using either the normal or emergency system because the hydraulic system that actuates the gear lost hydraulic fluid.
| Attributes | |
| ACN | 551307 |
| Time | |
| Date | 200206 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : fdk.airport |
| State Reference | MD |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | general aviation : personal |
| Make Model Name | Cardinal 177/177RG |
| Operating Under FAR Part | Part 91 |
| Flight Phase | landing : roll |
| Flight Plan | None |
| Person 1 | |
| Affiliation | other |
| Function | instruction : instructor |
| Qualification | pilot : cfi pilot : commercial pilot : instrument pilot : atp |
| Experience | flight time last 90 days : 80 flight time total : 7700 flight time type : 1000 |
| ASRS Report | 551307 |
| Person 2 | |
| Affiliation | other |
| Function | instruction : trainee |
| Qualification | pilot : student |
| Events | |
| Anomaly | aircraft equipment problem : critical conflict : ground critical excursion : runway ground encounters : gear up landing other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : lndg gear indication other flight crewa |
| Resolutory Action | none taken : detected after the fact other |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
After a series of takeoffs and lndgs at gai for training, the landing gear would not fully lock down. The backup extension system did not work, as there was no resistance in the handle. Apparently, the hydraulic fluid had leaked overboard. Maintenance later reported the nose gear actuator failed. After repeated unsuccessful efforts to fully lower the gear (maneuvering, and an unofficial method of trying to put fluid in the power pack), we decided to make a wheels-up landing on the grass at frederick. The landing occurred with minimum damage. Recommended corrections: the cessna 177RG poh gives only 1 backup method of lowering the gear, and that works only if hydraulic fluid is still available. The unofficial method of putting liquid in the power pack is unreliable at best. I recommend that cessna incorporate a second backup gear extension system, such as some of the piper twins have.
Original NASA ASRS Text
Title: C177RG WAS UNABLE TO EXTEND THE LNDG GEAR USING EITHER THE NORMAL OR EMER SYS BECAUSE THE HYD SYS THAT ACTUATES THE GEAR LOST HYD FLUID.
Narrative: AFTER A SERIES OF TKOFS AND LNDGS AT GAI FOR TRAINING, THE LNDG GEAR WOULD NOT FULLY LOCK DOWN. THE BACKUP EXTENSION SYS DID NOT WORK, AS THERE WAS NO RESISTANCE IN THE HANDLE. APPARENTLY, THE HYD FLUID HAD LEAKED OVERBOARD. MAINT LATER RPTED THE NOSE GEAR ACTUATOR FAILED. AFTER REPEATED UNSUCCESSFUL EFFORTS TO FULLY LOWER THE GEAR (MANEUVERING, AND AN UNOFFICIAL METHOD OF TRYING TO PUT FLUID IN THE PWR PACK), WE DECIDED TO MAKE A WHEELS-UP LNDG ON THE GRASS AT FREDERICK. THE LNDG OCCURRED WITH MINIMUM DAMAGE. RECOMMENDED CORRECTIONS: THE CESSNA 177RG POH GIVES ONLY 1 BACKUP METHOD OF LOWERING THE GEAR, AND THAT WORKS ONLY IF HYD FLUID IS STILL AVAILABLE. THE UNOFFICIAL METHOD OF PUTTING LIQUID IN THE PWR PACK IS UNRELIABLE AT BEST. I RECOMMEND THAT CESSNA INCORPORATE A SECOND BACKUP GEAR EXTENSION SYS, SUCH AS SOME OF THE PIPER TWINS HAVE.
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.