Narrative:

On the coldest night of the season, (-28 degrees C to 6000 ft) upon reaching a bumpy downwind, at the usual time, I selected gear down at 160 mph, 15 mph below vle. Oddly enough, nothing happened, no gear noise, electric load and no gear lights. I initially tried once more with same results, so climbed up to a safe altitude and reacquired flight following with boston approach. I worked on the problem for a while at 3500 ft and decided manchester airport a best choice facility to divert to for at best an emergency/manual gear extension. Upon arrival over mht at 5500 ft and talking with mht approach, I ran the manual extension per the afm and company checklist with no problem. Upon attaining 3 green and no 'red' per the afm, I landed without incident and left the airplane overnight for maintenance. At last communication with company after jacking the aircraft and doing numerous inspections and 'gear swings,' no problem was found. The previous crew, however, did inform me at a later date that she had done practice emergency gear extensions on the previous flight. It's doubtful that had caused my problem, although the timing is suspect. Being only 12 degrees from the afm's limit and the coldest day of the past 50 yrs is more likely the culprit.

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Original NASA ASRS Text

Title: A BE58 PLT HAS TO DO A MANUAL GEAR EXTENSION AFTER IT FAILED TO LOWER WITH THE GEAR HANDLE.

Narrative: ON THE COLDEST NIGHT OF THE SEASON, (-28 DEGS C TO 6000 FT) UPON REACHING A BUMPY DOWNWIND, AT THE USUAL TIME, I SELECTED GEAR DOWN AT 160 MPH, 15 MPH BELOW VLE. ODDLY ENOUGH, NOTHING HAPPENED, NO GEAR NOISE, ELECTRIC LOAD AND NO GEAR LIGHTS. I INITIALLY TRIED ONCE MORE WITH SAME RESULTS, SO CLBED UP TO A SAFE ALT AND REACQUIRED FLT FOLLOWING WITH BOSTON APCH. I WORKED ON THE PROB FOR A WHILE AT 3500 FT AND DECIDED MANCHESTER ARPT A BEST CHOICE FACILITY TO DIVERT TO FOR AT BEST AN EMER/MANUAL GEAR EXTENSION. UPON ARR OVER MHT AT 5500 FT AND TALKING WITH MHT APCH, I RAN THE MANUAL EXTENSION PER THE AFM AND COMPANY CHKLIST WITH NO PROB. UPON ATTAINING 3 GREEN AND NO 'RED' PER THE AFM, I LANDED WITHOUT INCIDENT AND LEFT THE AIRPLANE OVERNIGHT FOR MAINT. AT LAST COM WITH COMPANY AFTER JACKING THE ACFT AND DOING NUMEROUS INSPECTIONS AND 'GEAR SWINGS,' NO PROB WAS FOUND. THE PREVIOUS CREW, HOWEVER, DID INFORM ME AT A LATER DATE THAT SHE HAD DONE PRACTICE EMER GEAR EXTENSIONS ON THE PREVIOUS FLT. IT'S DOUBTFUL THAT HAD CAUSED MY PROB, ALTHOUGH THE TIMING IS SUSPECT. BEING ONLY 12 DEGS FROM THE AFM'S LIMIT AND THE COLDEST DAY OF THE PAST 50 YRS IS MORE LIKELY THE CULPRIT.

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.