Newt,
The FAA have their own ground instructional taxiable Harriers.
The Royal Navy webpage is now a dead link, but still visible on a cached search.
'Dummy Deck : School of Flight Deck Operations : RNAS Culdrose
Royal Navy School of Flight Deck Operations
Dummy Deck HMS Siskin
Aircraft Handling (AH) training was established at Fort Rowner, Gosport in 1946, which became RNAS Gosport (HMS Siskin). The School of Aircraft Handling (SAH) moved to RNAS Culdrose in 1959.
Today, HMS Siskin’s dummy deck is a full size replica of the flight deck of an Invincible class CVS aircraft carrier and, when used with ‘live’ ground instructional aircraft and in-service ground support equipment, provides the ideal controlled training environment for aircraft ground handling, launch/recovery and emergency procedures. Deviation from procedures and mistakes, which could lead to a serious incident on board ship, can be thoroughly de-briefed, corrected and learnt from, without damage to expensive operational aircraft. The low number of recordable ground handling and flight safety incidents aboard the various multi spot decks, especially during recent intensive operations, is further evidence to support the use of ‘live’ training aircraft.
The Air Engineering and Training Support Manager (AETSM) manages the facility, RN instructors deliver the training and a team of seven MoD engineering civil servants maintain the Sea Harrier FA2 and Harrier T8 aircraft. These ‘live’ fixed wing aircraft are taxied on and around the 'flight deck' carrying out simulated launches, recoveries and movements, as directed by Aircraft Handler students under training. Also, non-functional Sea King, Lynx and Merlin helicopters are used in conjunction with the ‘live’ Harriers to empathise tight operating parameters of a busy and hazardous operational flight deck. All aspects of flight safety are considered when moving aircraft around, as they would be on a real aircraft carrier, especially the effect of Jet Blast from the Harriers, which could blow a person overboard'
Training deck plays a crucial role in handling every situation
TJ