In this Episode of the Hangar Deck Podcast, the team discusses our Boeing 747-400 Cargo Aircraft with Pilot Brian Mills.     
The Boeing 747-400 is a major development and the best-selling model of the Boeing 747 family of jet airliners. While retaining the four-engine wide-body layout of its predecessors, the 747-400 embodies numerous technological and structural changes to produce a more efficient airframe. Its most distinguishing features versus preceding 747 models are 6-foot (1.8 m) winglets mounted on 6-foot (1.8 m) wing tip extensions, which are found on all 747-400s except for Japanese domestic market versions.
 
The 747-400 is equipped with a two-crew glass cockpit, which dispenses with the need for a flight engineer, along with more fuel-efficient engines, an optional fuel tank in the horizontal stabilizer, and revised fuselage/wing fairings. The aircraft also features an all-new interior with upgraded in-flight entertainment architecture. As on the 747-300, passenger variants include a stretched upper deck as standard. The model has a maximum capacity of 660 passengers with the 747-400D variant, and can fly non-stop for up to 7,670 nautical miles (14,200 km) with maximum payload, depending on model.
 
Northwest Airlines first placed the 747-400 in commercial service in February 9, 1989. The 747-400 was produced in passenger (−400), freighter (−400F), combi (−400M), domestic (−400D), extended range passenger (−400ER) and extended range freighter (−400ERF) versions. The 747-400 is the second-most recent version of the Boeing 747 aircraft family, having been superseded by the more economical and advanced Boeing 747-8. The last −400 model was delivered in December 2009.
 
As many 747-400s are now more than 20 years old, airlines are beginning to replace them. Airlines using the 747-400 have accelerated its retirement (as at 2015) and are replacing the model with more fuel efficient aircraft. The 747-400's leasing, resale and salvage value has dropped steeply because it is relatively expensive to operate. In most cases, it is being replaced with wide-body twin-engine aircraft like B777 or A330. The change in emphasis from hub and spoke operations to point-to-point flights has also reduced the need for jumbo jets. For example, Delta Airlines has reduced the number of flights it operates from the United States to Narita International Airport that are intended to transfer passengers to other destinations in Asia. Instead, Delta will utilize twin-engine widebody aircraft operating from an expanded hub at Seattle-Tacoma International Airport. Total capacity will be cut, but consequentially load factors will increase. In April 2015, Delta announced it would accelerate the retirement of its 747-400 aircraft and replace them either with Airbus A330 aircraft reassigned from cancelled international runs, or with new Airbus A350 aircraft now on order. That will leave just six 747s flying for the airline in 2015. Delta could not keep the 747s full without deeply discounting ticket prices; the discounts and increased maintenance required of a four-engine aircraft led to a drag on profits. Moreover, economic weakness in air cargo markets has slowed demand for cargo conversions. Since the cost of replacing a 747-400 is high (an airline must purchase or lease another wide-body), some operators choose to fly the 747-400 to the conclusion of its accepted useful life and then scrap it. The current parts resale value for this aircraft has been reduced to its engines. Several airlines have retired their 747-400 from the trans-pacific market. Remaining operators in 2014 include Qantas, British Airways and United. United is retaining its 23 747-400s for now, but the airline's deployment of them also reflects a change in emphasis from Asian hubs to domestic hubs, meaning that it will have more direct flights from the United States to secondary Asian market cities. This may reduce the need for jumbo jets.
 
 
747-400
 


 




Boeing 747-400 of