BELL UH-1H-II Multi-Mission Helicopter Instructions
BELL UH-1H-II Multi-Mission Helicopter Overview This technical bulletin addresses reported oil leakage from the tail rotor gearbox input quill seal on the UH-1H-II. Bell introduces a new seal (412-340-107-101) and a revised spacer assembly (212-040-475-101) incorporating a wear sleeve (412-340-108-101),…