Height requirements are aircraft and operator specific. On the larger carriers, also known as “wide-bodied aircraft”, you need to be taller. The only reason being that you need to reach the overhead stowages and emergency equipment, should the need arise. On the “narrow-bodied aircraft”, you can be shorter as the environment of the aircraft’s interior is much smaller and equipment is more readily accessible. In some cases, if you are too tall on the smaller carriers, you will not be able to fulfil your duties effectively as a safety officer. Therefore, height requirements depend on the operator and the aircraft type you will be operating on.