v1.0
In this version, I added the cold cabin startup program and fixed some bugs I know. Have fun!

About Boeing 747-400

The Boeing 747-400 is a large, long-range wide-body airliner produced by Boeing Commercial Airplanes, an advanced variant of the initial Boeing 747. The "Advanced Series 300" was announced at the September 1984 Farnborough Airshow, targeting a 10% cost reduction with more efficient engines and 1,000 nautical miles (1,900 km) of additional range. Northwest Airlines (NWA) became the first customer with an order for 10 aircraft on October 22, 1985. The first 747-400 was rolled out on January 26, 1988, and made its maiden flight on April 29, 1988.

About the N661US

The aircraft is Boeing 747-400 (Boeing 747-451, c/n 23719, reg N661US) and was built by Boeing for flight testing as N401PW, before subsequently being reregistered as N661US and delivered to Northwest Airlines (the launch customer for the 747-400) on December 8, 1989.The aircraft was later delivered to Delta Air Lines on October 29, 2008. After a further seven years in service with Delta, N661US was retired in 2015, and was then sent to the Delta Flight Museum for preservation on April 30, 2016.
Northwest Airlines Flight 85 was a flight from (KDTW) Detroit Metropolitan Wayne County Airport in the United States to Narita International Airport in Japan. On October 9, 2002, the Boeing 747-400 carrying out the flight experienced a lower rudder hardover event, when the flight was over the Bering Sea. A rudder hardover is when the aircraft's rudder deflects to its travel limit without crew input. The 747's hardover gave full left lower rudder, requiring the pilots to use full right upper rudder and right aileron to maintain attitude and course. The flight diverted to Ted Stevens Anchorage International Airport. No passengers or crew were injured, but the incident resulted in an airworthiness directive to prevent the possibility of a future accident.

Credits

@Decembermin for the 747-400
@SimpleplanesJP11 for the livery