我给加航打电话,他说17岁以下国内航班不许需要任何document。我查了网站上, 7 B4 e3 l F" o) S6 B' U1 g; a For travellers younger than 18, an original birth certificate or non-government issued ID (e.g. a student card) is suggested but not mandatory at this time, unless our Unaccompanied Minor service is used.