Boeing 747-400:
The most represented aircraft type in service with Koutei koku is the Boeing 747. During its long years of service -now 47 since its introduction- the airline owned 126 airframes (another 7 are currently on order), with 83 of them being in service at the same time in 1994-95. Of them, 39 were of the -400 series.
Eighteen 747-400s were delivered between 1990 and 1993 to replace older DC-10s and expand international routes, flying to Europe (London, Paris, Amsterdam, Frankfurt, Rome...), Middle East (Tel-Aviv, Dubai, Karachi...), North and South America (Los Angeles, New York, Toronto, Mexico city, Sao Paulo, Buenos Aires, Clianmehai...) and beyond (Johannesburg). A second order was made in the mid 90's, with deliveries between 1998 and 2000, bringing the total count to 26 airframes. Four were retired relatively early in 2008/2009 -three were converted into freighters and one kept for spares-, while the others 22 served on to 2016. Currently the 747-400 is the oldest model in Koutei Koku fleet, and it is fitted with a four-class configuration and a capacity of 311 passengers (8 First, 75 Business, 24 Premium Economy, 204 Economy). The airline is in process of retiring all airframes of the first batch: Currently 20 units are in the fleet after two planes were retired in 2017, another twelve are to go by 2020 when only eight will be left. the 747-8 and 777-300ER orders still unfilled will cover the retirement. The last eight units are to serve until the first half of the 2020s, when its planned to ultimately replace them with 777-9 aircrafts.
Parallel to the international version, Koutei also ordered seven 747-400D for domestic service. Deliveries began in 1992 and lasted until 1995. The planes were fitted with 532 seats in a two-class configuration just like the -300SRs. After nearly 20 years they were retired between 2011 and 2013.
To renew the freighter fleet, Koutei ordered six 747-400ERF which were delivered between 2004 and 2007. Capable to carry 112.600kg of payload up to 8.200km away they serve all cargo destinations of the ariline, including Fairbanks, Alaska, the only exclusive freight destination of the airline. All are still in service as of 2017 and they are all expected to serve another 5 to 7 years under koutei colours. Replacement timeline and aicraft have not been discussed yet.
In addition to the factory-built 747 Freighters Koutei Koku also converted to cargo-only configuration three of the four passenger 747s retired in 2008/2009. They shared the same cargo cpacity and range of their pure-freighter siblings and only lacked the nose cargo door. Given their older age they were retired between 2014 and 2016, replaced by 747-8F and A330-200F.