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A YAK18 on third landing in ZZZ the tricycle landing gear collapsed incurring damage to the propeller; trailing edge flaps and antennas.
| Attributes | |
| ACN | 701020 |
| Time | |
| Date | 200606 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : zzz.tower |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft Low Wing 1 Eng Retractable Gear |
| Operating Under FAR Part | Part 121 |
| Flight Phase | landing : roll |
| Flight Plan | None |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Qualification | pilot : private |
| Experience | flight time last 90 days : 20 flight time total : 1200 flight time type : 900 |
| ASRS Report | 701020 |
| Person 2 | |
| Affiliation | other |
| Function | observation : passenger |
| Events | |
| Anomaly | ground encounters : gear up landing |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
Landing at ZZZ; in afternoon; the gear collapsed on touchdown resulting in propeller and flap damage and 2 VHF antennas damaged. I placed gear lever in down position and passenger confirmed gear down. Callback conversation with reporter revealed the following information: the reporter stated that the landing gear on this airplane is operated by compressed air supplied by an engine driven air compressor to a supply tank. The system works fine except for the large number of check valves which are susceptible to rusting and blocking closed. The reporter stated this may not have been the cause as the airplane has not been jacked.
Original NASA ASRS Text
Title: A YAK18 ON THIRD LNDG IN ZZZ THE TRICYCLE LNDG GEAR COLLAPSED INCURRING DAMAGE TO THE PROP; TRAILING EDGE FLAPS AND ANTENNAS.
Narrative: LNDG AT ZZZ; IN AFTERNOON; THE GEAR COLLAPSED ON TOUCHDOWN RESULTING IN PROP AND FLAP DAMAGE AND 2 VHF ANTENNAS DAMAGED. I PLACED GEAR LEVER IN DOWN POS AND PAX CONFIRMED GEAR DOWN. CALLBACK CONVERSATION WITH REPORTER REVEALED THE FOLLOWING INFO: THE RPTR STATED THAT THE LNDG GEAR ON THIS AIRPLANE IS OPERATED BY COMPRESSED AIR SUPPLIED BY AN ENG DRIVEN AIR COMPRESSOR TO A SUPPLY TANK. THE SYSTEM WORKS FINE EXCEPT FOR THE LARGE NUMBER OF CHECK VALVES WHICH ARE SUSCEPTIBLE TO RUSTING AND BLOCKING CLOSED. THE RPTR STATED THIS MAY NOT HAVE BEEN THE CAUSE AS THE AIRPLANE HAS NOT BEEN JACKED.
Data retrieved from NASA's ASRS site as of January 2009 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.