Would love to know how it 'pops off' but hey, no investigations have happened yet:
Nose Gear Collapses as Southwest Flight Crash Lands at LaGuardia - Abby Ohlheiser - The Atlantic Wire
http://www.news.com.au/travel/news/...-guardia-airport/story-fnizu68q-1226683552273
Nose Gear Collapses as Southwest Flight Crash Lands at LaGuardia - Abby Ohlheiser - The Atlantic Wire
LaGuardia Airport in New York City stopped accepting flights on Monday evening after a Boeing 737 landed at the airport without its front landing gear. The Southwest flight 345, from Nashville, had previously reported possible issues with its landing gear.
http://www.news.com.au/travel/news/...-guardia-airport/story-fnizu68q-1226683552273
Lisa MacSpadden, of Port Authority told ABC news: "a wheel popped off the aircraft's landing gear after landing."