other members of a flying crew, who are not de facto Aircrew (but since 1 Apr 20 have been known as Airborne Specialists) and who come from ground trades/branches but are assigned to flying duties, they are awarded an Airborne Specialist Flying Badge upon completion of a bespoke flying training course, which is a half wing, without crown and 2 letters in the centre. This includes: "FC" (fighter controller) flying badge – Air Battle Managers assigned to fly on Sentry AEW.1. "AT" (airborne technician) flying badge – Ground Engineers assigned to fly on Sentry AEW.1 and RC-135W Rivet Joint platforms as in-flight technicians. "IA" (Airborne imagery analyst) flying badge – Intelligence Analysts assigned to fly on Sentinel R.1 in an Airborne Imagery Analyst role . RAF Catering Stewards assigned to fly as cabin crew on Voyager KC.1, BAe 146 and HS 125 are awarded the "CC" (cabin crew) badge. This badge is worn on the right sleeve in the same location as the parachute qualification, has two upturned wings (similar to Royal Navy ratings' aircrewman badges) and has cream stitching for the wings, lettering and laurels. Legacy Cabin Crew who qualified with the former "AS" (air steward) badge are still entitled to wear it. Parachute Jumping Instructors (PJIs) are honorary aircrew and wear an open parachute instead of a letter on a half wing. Obsolete flying badges There are also a number of obsolete Mission Aircrew flying badges that are no longer in use such as: "AG" for Air Gunner "B" for Air Bomber "RO" for Radio Observer "M" (meteorological observer) "QM" (air quartermaster) Observers wore a single wing attached directly to the letter "O", this was replaced by the Navigator's badge in 1942. RPAS pilots initially had a separate flying badge, similar to traditional pilot wings excepting a light blue wreath, this was withdrawn on 1 April 2019. Space personnel Qualified space personnel wear 'UK Space Wings': a silver delta, an orbit ellipse, and a constellation of stars in a blue laurel wreath; with a single silver swift's wing on one side. The constellation is representative of Aries, referencing the date 1st April when UK Space Command was stood up. These badges are similar to flying badges, and are worn on the left breast above medals, but are actually qualification badges. Royal Navy The Royal Navy's Fleet Air Arm has its own wings design, bestowed in 1925 when it