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His last annual proficiency check was satisfactorily completed April 13, 1965. Navigator Kohno had. flown 7,305 total hours of which 2,715 were in the DC-8. In the 90 days preceding the accident he had flown 157 hours, an in the DC-8.
The first purser, the two stewards and three hostesses were regular employees of Japan Air Lines and the evacuation training of each was current.
All of the crew-members had. received a rest period of more than 24 hours preceding Flight 813 and had been on duty about 1:20 hours before the accident.
1.6 Aircraft Information
The aircraft, a Douglas DC-8-33, serial No. 45626, was manufactured with a completion date of May 2, 1961. It had accumulated a. total of 13,423 hours, of which 21.5 were since the last major inspection. The aircraft was powered by four Pratt and Whitney JT4A-9 engines with engine histories as follows:
| Position | Date of Manufacture | Serial No. | Total Hours | Hours Since | Overhaul |
| 1 | 3/l5/60 | 611311 | 9835 | 21.5 | |
| 2 | 3/26/60 | 611366 | 9656 | 2806 | |
| 3 | 8/22/60 | 61171 | 8234 | 2294 | |
| 4 | 4/4/60 | 611453 | 9043 | 2353 |
Investigation revealed that during August 1965, engine S/N 611311 was overhauled by Japan Air Lines at its Tokyo facility. It was installed in the No. 1 position on JA-8006 about. November 20 durlng an overhaul of the aircraft. Post-overhaul test flights were accomplished and the air-craft was returned to scheduled service on December 24, 1965.
