Investigation Summary
Flight 58 was cruising at 28,000 feet on a flight from Sapporo to Tokyo. Simultaneously, two JASDF F-86F Sabre jets from Matsushima Air Base were conducting combat maneuver training in the same vicinity. The student pilot, Yoshimi Ichikawa, and his instructor, Tamotsu Kuma, were flying in an area where civil and military flight paths overlapped. As the F-86s performed a maneuver, Ichikawa's jet collided with the tail section of the Boeing 727. The impact caused the airliner to lose control and break apart due to aerodynamic forces during its descent. The F-86 also crashed, but Ichikawa ejected safely. The accident was the deadliest aviation disaster in history at the time.
Final Conclusions
The primary cause was the failure of the JASDF pilots to maintain adequate separation and visual lookout while training in a high-traffic civil airway. The lack of coordination between civil air traffic control and military flight operations was a significant contributing factor. The JASDF pilots were later prosecuted; the instructor was found guilty of professional negligence resulting in death, while the student was acquitted.
Video Analysis
Midair Collision in Japan: The Shocking and Tragic Story of All Nippon Airways Flight 58 — A detailed recreation and analysis of the 1971 mid-air collision between a commercial Boeing 727 and a JASDF F-86 fighter jet over Shizukuishi.
Watch on YouTube ↗If playback is blocked, the owner has disabled embedding — use the link above.
Systems & Failure Modes
Visual Flight Rules (VFR)
The JASDF pilots were operating under VFR, which required them to 'see and avoid' other traffic, a task they failed to perform effectively.
Air Traffic Control (ATC) Coordination
There was a critical lack of integrated radar monitoring between civilian controllers and military flight training operations.
Interesting Facts
- 01At the time, it was the deadliest aviation accident in history, surpassing the 1968 Kham Duc C-130 shootdown.
- 02The Boeing 727 was only five months old at the time of the accident.
- 03The collision occurred within the J8L airway, a heavily traveled corridor that military aircraft were supposed to avoid or exercise extreme caution in.
- 04The student pilot of the F-86 had only 21 hours of flight time in the Sabre jet.
- 05The wreckage of the Boeing 727 was scattered over a wide area near the town of Shizukuishi.
Safety Actions & Advisories
Unified Air Traffic Control
The Japanese government moved to integrate military and civilian air traffic control systems to ensure better tracking and separation.
Airspace Segregation
Stricter boundaries were established between training areas for the Japan Self-Defense Forces and commercial airways.