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A lancair 320 in descent declared an emergency due to inability to extend the landing gear normally. Required 1 hour to extend landing gear in alternate emergency mode.
| Attributes | |
| ACN | 695159 |
| Time | |
| Date | 200604 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | msl bound lower : 3000 msl bound upper : 5000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : zzz.tracon |
| Operator | general aviation : personal |
| Make Model Name | Experimental |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach |
| Flight Plan | None |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Qualification | pilot : private |
| Experience | flight time last 90 days : 4 flight time total : 550 flight time type : 120 |
| ASRS Report | 695159 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : published procedure non adherence : far |
| Independent Detector | aircraft equipment other aircraft equipment : gear position indication other flight crewa |
| Resolutory Action | flight crew : overcame equipment problem flight crew : declared emergency |
| Consequence | other |
| Factors | |
| Maintenance | performance deficiency : scheduled maintenance performance deficiency : inspection performance deficiency : non compliance with legal requirements performance deficiency : logbook entry |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Flight Crew Human Performance Chart Or Publication Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
Landing gear extend failed. Emergency extend took approximately 1 hour to extend. Declared emergency until gear extended. Callback conversation with reporter revealed the following information: the reporter stated the airplane was a kit homebuilt airplane he had built. The cause of the failure to extend the landing gear in the normal mode was hard and solidified grease in and on the landing gear components. The airplane was not flown for about 1 yr and the landing gear was not greased during this time. The alternate extension is accomplished by bringing the nose up and yawing the airplane. The relative wind should force the landing gear out. Reporter said it took a while to get the right combination of nose up and yaw but it worked.
Original NASA ASRS Text
Title: A LANCAIR 320 IN DSCNT DECLARED AN EMER DUE TO INABILITY TO EXTEND THE LNDG GEAR NORMALLY. REQUIRED 1 HR TO EXTEND LNDG GEAR IN ALTERNATE EMER MODE.
Narrative: LNDG GEAR EXTEND FAILED. EMER EXTEND TOOK APPROX 1 HR TO EXTEND. DECLARED EMER UNTIL GEAR EXTENDED. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE AIRPLANE WAS A KIT HOMEBUILT AIRPLANE HE HAD BUILT. THE CAUSE OF THE FAILURE TO EXTEND THE LNDG GEAR IN THE NORMAL MODE WAS HARD AND SOLIDIFIED GREASE IN AND ON THE LNDG GEAR COMPONENTS. THE AIRPLANE WAS NOT FLOWN FOR ABOUT 1 YR AND THE LNDG GEAR WAS NOT GREASED DURING THIS TIME. THE ALTERNATE EXTENSION IS ACCOMPLISHED BY BRINGING THE NOSE UP AND YAWING THE AIRPLANE. THE RELATIVE WIND SHOULD FORCE THE LNDG GEAR OUT. RPTR SAID IT TOOK A WHILE TO GET THE RIGHT COMBINATION OF NOSE UP AND YAW BUT IT WORKED.
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.