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A PA23 on takeoff roll at rotation the landing gear collapsed. Caused by landing gear control lever in down detent; but not locked.
| Attributes | |
| ACN | 669845 |
| Time | |
| Date | 200508 |
| 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 : lfpg.tower |
| Operator | general aviation : personal |
| Make Model Name | PA-23-250 Aztec |
| Operating Under FAR Part | Part 91 |
| Flight Phase | ground : takeoff roll |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Qualification | pilot : private pilot : multi engine pilot : instrument |
| Experience | flight time last 90 days : 45 flight time total : 300 flight time type : 30 |
| ASRS Report | 669845 |
| Person 2 | |
| Affiliation | other |
| Function | controller : local |
| Events | |
| Anomaly | aircraft equipment problem : critical ground encounters other non adherence : published procedure non adherence : far |
| Independent Detector | aircraft equipment other aircraft equipment : landing gear position lights other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance |
| Primary Problem | Aircraft |
Narrative:
Taxied from FBO to active runway. Cleared for takeoff. Applied full power. At rotation speed; applied back yoke pressure. Nosewheel lifted off ground; right main wheel collapsed; followed by left then nose. Plane traveled approximately 1000 ft down runway before collapse. Plane skidded additional 800 ft. Cause of collapse is being checked by mechanics. Callback conversation with reporter revealed the following information: the reporter stated the preflight check was accomplished; but failed to note that the 3 green landing gear position indicating lights were not illuminated. Control lever was not locked in down detent. The aircraft incurred damage to the propellers; engine; and belly skin.
Original NASA ASRS Text
Title: A PA23 ON TKOF ROLL AT ROTATION THE LNDG GEAR COLLAPSED. CAUSED BY LNDG GEAR CTL LEVER IN DOWN DETENT; BUT NOT LOCKED.
Narrative: TAXIED FROM FBO TO ACTIVE RWY. CLRED FOR TKOF. APPLIED FULL PWR. AT ROTATION SPD; APPLIED BACK YOKE PRESSURE. NOSEWHEEL LIFTED OFF GND; R MAIN WHEEL COLLAPSED; FOLLOWED BY L THEN NOSE. PLANE TRAVELED APPROX 1000 FT DOWN RWY BEFORE COLLAPSE. PLANE SKIDDED ADDITIONAL 800 FT. CAUSE OF COLLAPSE IS BEING CHKED BY MECHS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE PREFLT CHK WAS ACCOMPLISHED; BUT FAILED TO NOTE THAT THE 3 GREEN LNDG GEAR POS INDICATING LIGHTS WERE NOT ILLUMINATED. CTL LEVER WAS NOT LOCKED IN DOWN DETENT. THE ACFT INCURRED DAMAGE TO THE PROPS; ENG; AND BELLY SKIN.
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.