This aircraft variant belongs to Japan Air Self-Defense Force (JASDF) 7th Tactical Fighter Squadron "Sky Arrows"

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1) CONTROLS

• AG1: Fuselage Speedbrakes activation
• AG2: Drag parachute deployment
• AG3: GBU-38 JDAM Bombs Jettison/Salvo Mode
• AG4: Gyro-stabilized Autopilot System activation
• AG5: Wings Ordnance Jettison
• AG6: Formation lights – NIGHT MODE Activation
• AG7: Arresting Hook extension
• AG8: DE-ACTIVATE Cockpit ladder – PARK MODE – Gust Lock – ENG OFF
• VTOL DOWN: Flaps
• TRIM: Normal operation (Tab-Down for Pitch-Up) USE IT ALWAYS

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NOTE 1: Speedbrake [AG1] is automatically retracted when Gear Down, IAS < 200kts and 100% Throttle is applied – GO AROUND MODE

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NOTE 2: FLAPS are manually controlled but automatically limited for optimal efficiency depending on aircraft configuration, weight and airspeed.

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NOTE 3: The aircraft is NOT carrier-based and it is un-suitable for carrier deck operations. Proceed at your own risk while executing a carrier landing approach procedure and ONLY AFTER having jettisoned ALL the under-fuselage payloads.

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IMPORTANT NOTE: This plane has been built using a series of complicated and inter-structural Funky Trees™ codes for realistic handling behavior and has been thoroughly flight-tested using a Saitek P2600 Rumble Force Gamepad for detailed controlling and it is highly encouraged to use a gamepad, joystick or mouse-as-joystick mode for flying it.

All FT codes are mainly used for stall protection, low-speed handling enhancement, landing approach assist, configuration control and external stores management.

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2) T/O INSTRUCTION

• VTOL: 1 TAB DOWN – (HALF) for T/O Flaps
• TRIM: 1 TAB DOWN – (HALF) for T/O SET
• THROTTLE: 100%
NOTE: During T/O roll make small heading adjustments with yaw inputs. Above 60kts IAS/GS Nose Wheel Steering is automatically disengaged for safety reasons.
• Rotate aircraft around 125kts IAS (fully loaded configuration)
• Establish climbing attitude 20° NOSE-UP
• Crossing 400ft - GEAR UP
• VTOL: MIDDLE for Flaps in UP position
• TRIM: Adjust to maintain climbing attitude 15-20° nose-up
• THROTTLE: Adjust for cruising flight @ 400kts IAS
• Continue Flight

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3) LANDING INSTRUCTIONS

• Reduce Airspeed at 250kts IAS and below
• Align with Runway at 1.500 ft Altitude and 2NM distance
• AG1: Activate for Air-brake extension
• GEAR DOWN for LDG extension
• THROTTLE: 15-30% (depends on weight)
--- (OPTIONAL) AG4: Activate for Gyro-stabilization ---
• TRIM: Adjust for 1°-5° Nose Up
• Establish reasonable Rate of Descent (4-5 m/s)
• Maintain Airspeed 110-145kts IAS (depends on weight)
• Make corrections using small THROTTLE and TRIM movements (~1-3%)
NOTE: When turning with LDG in EXTENDED position use more THROTTLE to compensate for Drag and Lift loss
• Maintain Attitude 1°-5° Nose Up (Optimal AoA Approach)
• 20ft before Touchdown apply Flare technique and use aerodynamic breaking (keep the nose high)
• At Touchdown: THROTTLE – 0% and AG2 for Drag Chute (if needed)
• When all wheels on ground and airspeed below 120kts IAS - APPLY FULL BRAKES
• At speed below 25kts IAS use Nose Wheel Steering
• Maintain ground directional stability with slight yaw inputs

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4) WEAPONS

CAUTION POINTS for Air-to-Ground weapons:

• All weapons have realistic dimensions, specifications and flight behavior
• Target always IN FRONT & SLIGHTLY BELOW AIRCRAFT’S LINE OF SIGHT
• DO NOT fire any weapons at speeds below 100kts or at extreme sink rate
• IT’S NOT ADVISED TO JETTISON EXTERNAL STORES UNDER NEGATIVE HIGH-G LOADING & AT SUPERSONIC SPEEDS (>650kts TAS)

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<Weapons Firing Procedures>

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>AIR-TO-GROUND

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ASM-2

Anti-Ship Missile

(Inner Wing hardpoints)

• Select Air-to-Ground target mode
• Select ASM-2 type weapon
• Recommended Alt: 500 - 30.000ft
• Recommended Speed: >150kts IAS
• Acquire target (steady red target box)
• Fire weapon

>>>>>>>>>

AGM-88F

High-speed Anti-Radiation Missile

(Inner-Middle Wing hardpoints)

• Select Air-to-Ground target mode
• Select AGM-88F type weapon
• Recommended Alt: 500 - 40.000ft
• Recommended Speed: >200kts IAS
• Acquire target (steady red target box)
• Fire weapon

>>>>>>>>>

GBU-12 Paveway IV

This bomb is a guided munition and NOT a stand-off weapon
which means that it uses the kinetic and the potential energy of the aircraft
and it doesn’t have any propulsion system. Higher and faster release guarantee
better target hit possibilities.

(GPS/INS and Laser-guided Bomb 500lbs - Mk.82/BLU-109)

(Middle Wing hardpoints)

• Select Air-to-Ground target mode
• Select GBU-12 type weapon
• Recommended Alt: >8.000ft
• Recommended Speed: >250kts IAS
• Acquire target (steady red target box)
• Fire weapon
>>>>>>>>>

GBU-38 JDAM

This bomb is a guided munition and NOT a stand-off weapon
which means that it uses the kinetic and the potential energy of the aircraft
and it doesn’t have any propulsion system. Higher and faster release guarantee
better target hit possibilities.

( GPS/INS and Laser-guided Bomb 500lbs - Mk.82/BLU-126/B)

(Under-fuselage Multi-Purpose hardpoints)

• Select Air-to-Ground target mode
• Select GBU-38 JADAM type weapon
• Recommended Alt: >10.000ft
• Recommended Speed: >300kts IAS
When target marker approaches desirable target:
• Fire weapon

>>>>>>>>>

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>AIR-TO-AIR

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AAM-5

(IR Beyond-Visual-Range A2A Missile)

(Outer Wing-pylons)

• Select Air-to-Air target mode
• Select AAM-5 type weapon
• Acquire target (steady red target box)
• Fire weapon
>>>>>>>>>

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5) AIRCRAFT OVERVIEW

The Fuji/Harpia F-6EJ Zenko is a supersonic ground attack and maritime strike variant of the F-6C/D Tengu fighter jet that was developed in mid 80s as a domestically designed fighter for the all-weather ground attack role. The F-6 has entered in JASDF service in early 1990s and started replacing the previous indigenous F-1 fighter jet in the ground attack role. Rising tensions in the area with PRC and N. Korea led the Japanese MoD to launch a highly ambitious program of massively upgrading the F-6 fleet to the EJ standard and giving the type extensive maritime strike capability, modern avionics and further weapon availability. The whole project has been internally designated as “Blue Samurai” in an effort to divert any foreign attention from the program and avoid industrial espionage attempts.

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HarpiaDS has been highly involved in the initial F-6 program, providing important sub-systems and helping in the designing phase by borrowing elements from the A-38C SkyFox attack jet. The Japanese Government awarded Fuji Heavy Industries the contract for the F-6 construction, with HarpiaDS as a major sub-contractor and R&D partner. Many Japanese manufacturers have provided crucial parts for the completion of the “Blue Samurai” project and ensured the domesticity of the production.

The new variant had a supreme performance due to the powerful F110 engine and shared a lot of common systems with the F-2 Viper Zero for lower cost and better maintenance sequence. The flight tests have been completed in early 1999 and by 2000 the F-6 squadrons started receiving the new F-6EJ Zenko aircraft. In the coming years, many modern Japanese and US made weapons have been certified and integrated in the new aircraft and especially the ASM-2 anti-ship missile and the HARM missile. This way, the F-6EJ became a capable SEAD/TASMO aircraft and a vital part of Japan’s air defense system.

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The F-6EJ Zenko is equipped with:
• IHI-F110-129C afterburning turbofan engine of 18.000 lbf thrust dry and 31,500 lbf with afterburner. It’s a licensed re-designed variant of the GE F-110 engine by IHI Corporation, the same powerplant that is used on JASDF’s F-2 Viper Zero.
• Mitsubishi J/APG-2 AESA Radar designed for long-range ground and maritime target detection and tracking, weapon delivery and automatic multi-target acquisition and prioritization.
• Toshiba ANJ/AAQ-32 IFTS Infrared search and track (IRST) system
• Sony/Toshiba ANJ/AAS-45(G) “Yosuzume” Electro-Optical Targeting System (EOTS)
• Revised wing structure using composite materials and cutting-edge building technology, allowing heavier loads and more multi-purpose pylons to be carried.
• Tail fin reconstruction for optimal engine cooling access and sensors incorporation.
• Main airframe structural modifications for systems’ incorporation and on-board internal fuel load increase up to 1.850gals.
• Helmet Mounting System cockpit modification
• BAE combined interrogator/transponder AN/APX-113(V)
• Raytheon Technologies AN/ARC-164 Have Quick UHF transceiver
• NEC V/UHF transceiver J/ARC-701
• Tokyo Radio Systems/BAE Systems AIFF
• Hitachi Kokuai Electric HF radio J/ARC-26
• Hitachi data link J/ASW-20
• Toshiba/HARPIA DS digital AFCS
• Japan Aviation Electronics ring laser Inertial Reference System
• Toshiba VOR/ILS
• Rockwell Collins TACAN
• Shimadzu wide-angle holographic Heads-Up Display
• Yokogawa LCD displays
• Mitsubishi Electric J/MMC-2 Mission computer
• Mitsubishi Electric MDS mission planning system
• Toshiba digital map display
• Mitsubishi Electric integrated Electronic Warfare system J/ASQ-2B

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Many thanks to @232287168147825 for the breathtaking pics and to all the SPMC community for the useful advices and the general support!