Hi, I am due to travel to Tonga next month and have to take an internal flight on either a Harbin Y12 Mark II plane (15 seater) or a Bandeirante EMB 110 (17 seater) with Fiji Airlines - Nuku'alofa to Vava'u. The problem is I will be 23 weeks pregnant and have been told I shouldn't fly in an unpressurized airplane. Does anyone know if the above two planes are pressurized or not?

Thanks for any replies