ACFT EQUIP PROB. LNDG GEAR INDICATOR GEAR UP LNDG.

Narrative

I WAS ON A VECTORED APCH TO RWY 31. AT 6.4 MI WHEN I LOWERED THE LNDG GEAR LEVER; FELT THE APPROPRIATE THUD IN AIRSTREAM RESISTANCE; OBSERVED THE GEAR AS IT BEGAN TO DSND; AND OBSERVED THE GREEN GEAR LIGHT ILLUMINATE. I THEN PROCEEDED ON MY GLIDE COURSE AT A 500 FPM DSCNT TO 500 FT FROM THRESHOLD LOCATION NEAR THE CTRLINE OF RWY 31; WITH THE GREEN GEAR LIGHT ON AND WITHOUT ANY ACTIVATION OF THE GEAR WARNING HORN (DOCUMENTABLE VIA THE TWR TAPE). UPON TOUCHDOWN IT BECAME EVIDENT THE GEAR WERE RETRACTED. THE FRONT ENG HAD SUDDEN STOPPAGE; THE REAR ENG DID NOT AND WAS SHUT DOWN AS THE APPROPRIATE EMER PROCS WERE CONDUCTED; THE TWR NOTIFIED; THE AIRPLANE CLEANED UP; ETC; AND EVACED. ABOUT 15 SECONDS AFTER TOUCHDOWN; WITH THE GREEN GEAR LIGHT STILL ON; THE GEAR HORN WENT OFF. UPON RECOVERY OF THE DISABLED ACFT BY THE CREW HEADED BY MR X; IT WAS NOTED THE GREEN GEAR LIGHT WAS ON WAY BEFORE THE GEAR WAS EXTENDED AND IN A LOCKED POS (SEE MR X RPT). THIS; IN CONJUNCTION WITH THE ABOVE DATA; CLRLY POINT TO ELECTRICAL-MECHANICAL FAILURE; PROBABLY DUE TO OVERHEATED SENSORS ON THE HOTTEST DAY OF THE YR. THIS IS ALSO THE CONCLUSION OF MR Y OF THE FAA; PHILADELPHIA.