H.L.P.'s Light Lift mission, the Citation II Ops fly 2-3 times per week on round-trip relief flights to Puerto Rico. Track us on flightaware.com or on flightradar24.com! We operate as JTN241 Southbound and JTN828 Northbound. The JTN callsign "Jettest 241 or 828" is used because that is the registered ICAO callsign for Jet Test and Transport. the 241 and 828 flight numbers are used because these were the flight numbers used by H.L.P. Trustees Sam Mason and Steve Giordano when they were Cape Air pilots 15 years ago! Cape Air is where Steve and Sam met and have since remained friends; a relationship that eventually led to the formation of H.L.P.