Aircraftman ranks below Leading Aircraftman and has a NATO rank code of OR-1.
From the en.wikipedia.org
Aircraftman Koulakis lived through Cyclone Tracy as a child in Darwin.
From the jewishnews.net.au
Aircraftman do not wear any rank insignia.
From the en.wikipedia.org
Completing this course on 9 November, Foskett was advanced to leading aircraftman and posted to No. 2 Embarkation Depot.
From the en.wikipedia.org
One of the 382 British servicemen and women who have died while serving in Afghanistan over the past 10 years was 51-year-old senior aircraftman Gary Thompson from Nottingham.
From the guardian.co.uk
More examples
Aircraftsman: a noncommissioned officer in the British Royal Air Force