Helicopter Bell UH-1N Serial 31402 Register 158231 used by US Marine Corps USMC. Aircraft history and location Aircraft History 158231 US Marine Corps 1995-10 A KNFG homebase USMC HH-1N type HMT-303./QT-420 HMLAT-303 Bell HH-1N USMC, conv to HH-1N HMLAT-303 /QT-420 29feb96 to AMARC-7H0245 HMLAT-303 Send Updates Use APP to upload photo @ (optional) When Now? / / Send