senior aircraftman 
noun (plural senior aircraftmen)
A rank held by a man in the RAF, above leading aircraftman and below junior technician.When Blackburn senior aircraftman Michael went on a football tour to Africa with the RAF, he didn't realise what a lasting impression it would make on him....
- During today's visit, the Prince was asked to present a number of awards to troops, base staff, and the widow of an RAF senior aircraftman who died in Afghanistan.
- A senior aircraftman in the RAF shot a colleague in the foot by mistake.