Narrative:

On descent for landing on runway 31R into jfk, upon selecting the gear down, we got the 3 green lights on the twin indication, but then the gear horn came on. We also have a standby gear indication, that showed us that our nose gear was not down and locked. We immediately initiated a go around. ATC advised that we could do slow pass over republic, farmingdale for them to have a look at our nose gear. We did that, and ATC in farmingdale noted that the nose gear appeared to be down but slightly bent backwards about 2 degrees. After talking to our maintenance department, we tried a few other things. We got permission from ATC to do 2 low passes over jfk runway 4L which closed with our maintenance personnel standing by on the side of the runway, to give their opinion on the problem at hand. One of the checklist item was to burn off fuel as much as possible. We had a lot of gas. We elected to fly for 1 hour 45 mins to reach a comfortable fuel level for landing. All that time gave us time to try a lot of different strategies. We had time to brief the passenger for an occasional nose gear collapse on landing. When our time came up, we were given runway 4R, with calm wind. We landed uneventfully, the nose gear did remain in place. Callback conversation with reporter revealed the following information: the reporter stated the BA4100 has 2 separate landing gear position and warning system, a primary and a secondary. The reporter said the landing gear primary system indicated 3 green down and locked, but the secondary indicated nose gear unsafe and sounded the warning horn. The reporter said the problem was a nose gear sensor connector found loose.

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Original NASA ASRS Text

Title: A BA4100 ON FINAL APCH AT 1000 FT MADE A GAR DUE TO THE LNDG GEAR WARNING HORN SOUNDING WITH 3 GREEN DOWN AND LOCK INDICATIONS CAUSED BY A LOOSE NOSE GEAR SENSOR CONNECTOR.

Narrative: ON DSCNT FOR LNDG ON RWY 31R INTO JFK, UPON SELECTING THE GEAR DOWN, WE GOT THE 3 GREEN LIGHTS ON THE TWIN INDICATION, BUT THEN THE GEAR HORN CAME ON. WE ALSO HAVE A STANDBY GEAR INDICATION, THAT SHOWED US THAT OUR NOSE GEAR WAS NOT DOWN AND LOCKED. WE IMMEDIATELY INITIATED A GAR. ATC ADVISED THAT WE COULD DO SLOW PASS OVER REPUBLIC, FARMINGDALE FOR THEM TO HAVE A LOOK AT OUR NOSE GEAR. WE DID THAT, AND ATC IN FARMINGDALE NOTED THAT THE NOSE GEAR APPEARED TO BE DOWN BUT SLIGHTLY BENT BACKWARDS ABOUT 2 DEGS. AFTER TALKING TO OUR MAINT DEPT, WE TRIED A FEW OTHER THINGS. WE GOT PERMISSION FROM ATC TO DO 2 LOW PASSES OVER JFK RWY 4L WHICH CLOSED WITH OUR MAINT PERSONNEL STANDING BY ON THE SIDE OF THE RWY, TO GIVE THEIR OPINION ON THE PROB AT HAND. ONE OF THE CHKLIST ITEM WAS TO BURN OFF FUEL AS MUCH AS POSSIBLE. WE HAD A LOT OF GAS. WE ELECTED TO FLY FOR 1 HR 45 MINS TO REACH A COMFORTABLE FUEL LEVEL FOR LNDG. ALL THAT TIME GAVE US TIME TO TRY A LOT OF DIFFERENT STRATEGIES. WE HAD TIME TO BRIEF THE PAX FOR AN OCCASIONAL NOSE GEAR COLLAPSE ON LNDG. WHEN OUR TIME CAME UP, WE WERE GIVEN RWY 4R, WITH CALM WIND. WE LANDED UNEVENTFULLY, THE NOSE GEAR DID REMAIN IN PLACE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE BA4100 HAS 2 SEPARATE LNDG GEAR POS AND WARNING SYS, A PRIMARY AND A SECONDARY. THE RPTR SAID THE LNDG GEAR PRIMARY SYS INDICATED 3 GREEN DOWN AND LOCKED, BUT THE SECONDARY INDICATED NOSE GEAR UNSAFE AND SOUNDED THE WARNING HORN. THE RPTR SAID THE PROB WAS A NOSE GEAR SENSOR CONNECTOR FOUND LOOSE.

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.