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. Type certification was received on January 9, 1989, and it entered service with NWA on February 9, 1989.

The first -400M combi was rolled out in June 1989. The -400D Domestic for the Japanese market, without winglets, entered service on October 22, 1991. The -400F cargo variant, without the stretched upper deck, was first delivered in May 1993. With an increased MTOW of 910,000 lb (410 t), the extended range version entered service in October 2002 as the -400ERF freighter and the -400ER passenger version the following month. Several 747-400 aircraft have undergone freighter conversion or other modifications to serve as transports of heads of state, YAL-1 laser testbed, engine testbed or the Cosmic Girl air launcher. The Dreamlifter is an outsize cargo conversion designed to move Dreamliner components.
With 694 delivered over the course of 20 years from 1989 to 2009, it was the best-selling 747 variant. Its closest competitors were the smaller McDonnell Douglas MD-11 trijet and Airbus A340 quadjet. It has been superseded by the stretched and improved Boeing 747-8 Intercontinental, introduced in October 2011. In the late 2010s, older 747-400 passenger aircraft were being phased out by airlines in favor of long-range, wide-body twinjet aircraft, such as the Boeing 777, 787, and Airbus A350.

Controls:
AG1: Navigation lights
AG2: Beacon lights
AG3: Strobe lights
AG4: Reverse thrust
AG5: Landing lights
AG8: Nose gear lights
VTOL: Flaps
Trim: Adjust trim

Credits to @Boelin for the cockpit windows from his 747-400 Dreamlifter.
Credits to @1918 for the Japan Airlines tail and fuselage logos from his JAL 747-200.

Blueprint I used:

Other liveries:

Lufthansa

All Nippon Airways

Qantas

Thai Airways International

B747-200 United Airlines Rainbow Tulip

United Airlines Battleship Grey

United Airlines Blue Tulip

United Airlines Globe

Northwest Airlines

Delta Airlines

Cathay Pacific (PW4000)

Cathay Pacific (RB211)

B747-200 Philippine Airlines Old

Philippine Airlines

B747-200SUD KLM Royal Dutch Airlines

KLM Royal Dutch Airlines New

Korean Air Lines

B747-100SR SUD Japan Airlines Old

B747-300 Singapore Airlines Old