of former U.S. Army AH-1s used in firefighting service. AH-1G HueyCobra Initial 1966 production model gunship for the US Army, with one Avco Lycoming T53-13 turboshaft. JAH-1G HueyCobra One helicopter for armament testing including Hellfire missiles and multi-barrel cannon. TH-1G HueyCobra Two-seat dual-control trainer. Z.14 HueyCobra The Spanish Navy purchased eight new-build AH-1Gs, designating the type the "Z-14". These were equipped with the M35 20 mm cannon system, and were used to support coastal patrol boats. Four of these were lost in accidents. The remaining helicopters were retired in 1985 with three sent back to the US, and one kept in storage in Spain. YAH-1Q Eight AH-1Gs with XM26 Telescopic Sight Unit (TSU) and two M56 TOW 4-pack launchers. AH-1Q HueyCobra Equipped with the M65 TOW/Cobra missile subsystem, M65 Telescopic Sight Unit (TSU), and M73 Reflex sight. All future versions will be equipped with the TSU and be equipped to fire the TOW missile subsystem. YAH-1R AH-1G powered by a T53-L-703 engine without TOW system. YAH-1S AH-1Q upgrade and TOW system. AH-1S The baseline AH-1S is an AH-1Q upgraded with a T53-L-703 turboshaft engine. The AH-1S is also referred to as the "Improved AH-1S", "AH-1S Modified", or "AH-1S(MOD)" prior to 1988. (Prior to 1988, all upgraded aircraft were referred to as variants of the AH-1S.) QAH-1S A target drone conversion of the AH-1S by Bell-Bristol Aerospace under a joint US and Canada development program started in 1994. Honeywell further modified the QAH-1S into the Hokum-X by installing systems and hardware to allow it to simulate the Russian Kamov Ka-50 attack helicopter. Three Hokum-Xs were completed from 1998 to 2001. AH-1P 100 production aircraft with composite rotors, flat plate glass cockpit, and improved cockpit layout for nap-of-earth (NOE) flight. The AH-1P is also referred to as the "Production AH-1S", or "AH-1S(PROD)" prior to 1988. These improvements are considered Step 1 of the AH-1S upgrade program. AH-1E 98 production aircraft with the Enhanced Cobra Armament System (ECAS) featuring the M97A1 armament subsystem with a three-barreled M197 20 mm cannon. The AH-1E is also referred to as the "Upgunned AH-1S", or "AH-1S(ECAS)" prior to 1988. These improvements are considered Step 2 of the AH-1S upgrade program. AH-1E aircraft included the M147 Rocket Management Subsystem (RMS) to fire rockets. AH-1F 143 production aircraft and 387 converted AH-1G Cobras. The AH-1F incorporates all Step 1 and 2 upgrades to the AH-1S. It also featured Step