|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1201 To 1800|
|Locale Reference||airport : oxc|
|Altitude||agl bound lower : 0|
agl bound upper : 0
|Operator||general aviation : personal|
|Make Model Name||Any Unknown or Unlisted Aircraft Manufacturer|
|Operating Under FAR Part||Part 91|
|Flight Phase||landing other|
|Function||flight crew : single pilot|
|Qualification||pilot : commercial|
pilot : instrument
|Experience||flight time last 90 days : 3|
flight time total : 1247
flight time type : 700
|Function||other personnel other|
|Qualification||other other : other|
pilot : commercial
pilot : instrument
pilot : cfi
|Anomaly||aircraft equipment problem : critical|
other anomaly other
|Independent Detector||other flight crewa|
|Resolutory Action||none taken : detected after the fact|
|Primary Problem||Flight Crew Human Performance|
|Air Traffic Incident||Pilot Deviation|
Flight was biannual review. Early in flight, breaker would trip before full retraction. This was cured when alternator breaker was reset. Flight continued as gear retracted properly. Continued maneuvers including 2 360-degree turns with gear retracted. Instructor called for a simulated emergency landing, after circling (above osc) and on downwind, we started gump check, he called 'gear already down.' I didn't look but did rest of check. We landed gear up without hearing a horn. 3 months (about) before horn was going off about 21-22 inches. I asked repair shop (who also operates hangar where plane is housed) to adjust it. They did, saying full adjustment wasn't possible without spending much more time and energy, so they just 'turned it down a little' awaiting the annual which should be done within a few months. In retrospect, horn didn't function on earlier flts. Factors: make own gump check and don't depend on another (even an instructor of very long experience). Look at gear light yourself. Horn should have been reported as not operating after adjustment. It really wasn't checked in operation and reported to repair shop.
Original NASA ASRS Text
Title: SMA ON TRAINING FLT HAS GEAR UP LNDG.
Narrative: FLT WAS BIANNUAL REVIEW. EARLY IN FLT, BREAKER WOULD TRIP BEFORE FULL RETRACTION. THIS WAS CURED WHEN ALTERNATOR BREAKER WAS RESET. FLT CONTINUED AS GEAR RETRACTED PROPERLY. CONTINUED MANEUVERS INCLUDING 2 360-DEG TURNS WITH GEAR RETRACTED. INSTRUCTOR CALLED FOR A SIMULATED EMER LNDG, AFTER CIRCLING (ABOVE OSC) AND ON DOWNWIND, WE STARTED GUMP CHK, HE CALLED 'GEAR ALREADY DOWN.' I DIDN'T LOOK BUT DID REST OF CHK. WE LANDED GEAR UP WITHOUT HEARING A HORN. 3 MONTHS (ABOUT) BEFORE HORN WAS GOING OFF ABOUT 21-22 INCHES. I ASKED REPAIR SHOP (WHO ALSO OPERATES HANGAR WHERE PLANE IS HOUSED) TO ADJUST IT. THEY DID, SAYING FULL ADJUSTMENT WASN'T POSSIBLE WITHOUT SPENDING MUCH MORE TIME AND ENERGY, SO THEY JUST 'TURNED IT DOWN A LITTLE' AWAITING THE ANNUAL WHICH SHOULD BE DONE WITHIN A FEW MONTHS. IN RETROSPECT, HORN DIDN'T FUNCTION ON EARLIER FLTS. FACTORS: MAKE OWN GUMP CHK AND DON'T DEPEND ON ANOTHER (EVEN AN INSTRUCTOR OF VERY LONG EXPERIENCE). LOOK AT GEAR LIGHT YOURSELF. HORN SHOULD HAVE BEEN RPTED AS NOT OPERATING AFTER ADJUSTMENT. IT REALLY WASN'T CHKED IN OP AND RPTED TO REPAIR SHOP.
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.