Starting in 1973 the Japan Air Self-Defense Force received 154 F-4EJ
Phantoms that were based on the USAF F-4E. 138 of these aircraft were
manufactured under license by Mitsubishi who produced the last F-4 Phantom
II. Several changes were made to the F-4E to make it an F-4EJ. Basically it
had any offensive weapons removed but eventually these restrictions were
lifted and the aircraft were updated with missiles and the latest electronic
The squadron emblem of the 301st Squadron is a frog wearing a scarf with 7
stars representing the 7th Air Wing. The mascot is based on a frog found
locally near the Hyakuri AB. F-4EJ Kai 17-8440 was the last Phantom
delivered in the world and arrived on May 20, 1981. It is assigned to 301st
Squadron, the last JASDF F-4 squadron. The 301st is scheduled to retire the
F-4 in 2021 and move to Misawa AB and convert to the F-35.
Specifications for the F-4E Phantom II / F-4EJ
They are virtually identical except for the restricted equipment:
This included removal of the in-flight refueling receptacle that was later
retrofitted, no leading edge slats, ground attack control equipment such as
weapons and bomb delivery systems and the addition of modern electronic
equipment including a data link system and radar warning receiver. Most or
all this equipment was eventually reinstalled.
Number Built: F-4E - 5,195 / F-4EJ - 154 with 138 built in Japan under license.
Each aircraft has 54,197 feet of wiring and 643,000 fasteners holding it
2 X General Electric J79-GE-17 turbojets, 11,870 lb.s.t dry, 17,900 lb.s.t. with
Maximum speed - 1430 mph at 36,000 feet (Mach 2.21), 914 mph at sea
level (Mach 1.19).
Cruising speed - 585 mph.
Landing speed - 158 mph.
Initial climb rate - 61,400 feet per minute.
Service ceiling - 62,250 feet.
Combat ceiling - 59,600 feet.
Combat range - 595 miles.
Normal range - 1,100 miles.
Maximum range – 1,885 miles with maximum external fuel.
Empty - 29,535 pounds.
Gross - 40,562 pounds.
Combat weight - 38,019 pounds.
Maximum takeoff weight - 61,651 pounds.
Wingspan - 38 feet 5 inches.
Wing area - 530 square feet.
Length - 63 feet 0 inches.
Height - 16 feet 6 inches.
Maximum internal fuel in the fuselage tanks - 1364 US gallons (up to block
40) or 1225 US gallons (block 41 and beyond). An additional 630 gallons of
fuel could be carried in internal tanks inside the wings.
Maximum external fuel - 600 US gallons in a centerline tank carried
underneath the fuselage.
Plus 370 US gallons in each of two tanks carried underneath the outer wing
Total fuel load – 3,334 US gallons (up to block 40) or 3,195 US gallons (block
41 and beyond).
1 X 20-mm M61A1 cannon with 639 rounds.
4 X AIM-7 Sparrow semi-active radar homing air-to-air missiles in semi-
recessed slots in the fuselage belly.
2 to 4 X AIM-9 Sidewinder infra-red homing air-to-air missiles carried under
the wings on the inboard pylons.
A total offensive load of up to 16,000 pounds could be carried on the
centerline and four under-wing hard-points.