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BOEING 747-300

From SKYbrary Wiki

Name 747-300
Manufacturer BOEING
Body Wide
Wing Fixed Wing
Position Low wing
Tail Regular tail, mid set
WTC Heavy
Type code L4J
RFF Category 9
Engine Jet
Engine count Multi
Position Underwing mounted
Landing gear Tricycle retractable
Mass group 5

Manufacturered as:

BOEING 747-300

BOEING 747-300

BOEING 747-300 BOEING 747-300 3D


Long range, high capacity wide-body airliner. In service since 1983. Initial model of second generation of B747 family with stretched upper deck. Production ceased in 1990. 81 aircraft were delivered, 78 remain in service in 1999.

Technical Data

Wing span 59.6 m195.538 ft <br />
Length 70.6 m231.627 ft <br />
Height 19.3 m63.32 ft <br />
Powerplant 4 x P&W JT9D-7R4G2 (243.2 kN) or
4 x GE CF6-50E2 (235.2 kN) or
4 x R-R RB211-524D4 (236,3 kN) or
4 x GE CF6-80CB1 (252,2 kN) turbofans.
Engine model General Electric CF6, Pratt & Whitney JT9D, Rolls-Royce RB211

Performance Data

Take-Off Initial Climb
(to 5000 ft)
Initial Climb
(to FL150)
Initial Climb
(to FL240)
MACH Climb Cruise Initial Descent
(to FL240)
(to FL100)
Descent (FL100
& below)
V2 (IAS) 178 kts IAS 230 kts IAS 300 kts IAS 300 kts MACH 0.75 TAS 491 kts MACH 0.85 IAS 290 kts IAS 250 kts Vapp (IAS) 160 kts
Distance 3300 m ROC 2000 ft/min ROC 1500 ft/min ROC 1500 ft/min ROC 1000 ft/min MACH 0.84 ROD 1000 ft/min ROD 2500 ft/min MCS 250 kts Distance 2200 m
MTOW 374850374,850 kg <br />374.85 tonnes <br /> kg Ceiling FL450 ROD 1500 ft/min APC D
WTC H Range 66916,691 nm <br />12,391,732 m <br />12,391.732 km <br />40,655,288.744 ft <br /> NM

Accidents & Serious Incidents involving B743

  • B743, Dhaka Bangladesh, 2008 (On 25 March 2008, an Air Atlanta Icelandic Boeing 747-300 was decelerating after landing at Dhaka when a fuel leak in the vicinity of the No 3 engine led to a fire which could not be extinguished. An emergency evacuation was accomplished with only a few minor injuries. The cause of the fuel leak was traced to mis-assembly of a fuel feed line coupling during a ‘C’ Check some six months previously. The failure to follow clear AMM instructions for this task in two specific respects was of concern to the Investigating Agency.)
  • B743, vicinity Jeddah Saudia Arabia, 2008 (On 5 May 2008, a Saudi Arabian Boeing 747-300 being positioned for maintenance to include investigation of degraded power output from the no 1 GE CF6-50 engine experienced an uncontained failure of the same engine shortly after take off from Jeddah followed by an uneventful air turn back. The failure was attributed to the vulnerability of the engine design to high pressure turbine blade loss.)
  • B743, vicinity Tehran Mehrabad Iran, 2015 (On 15 October 2015 a Boeing 747-300 experienced significant vibration from one of the engines almost immediately after take-off from Tehran Mehrabad. After the climb out was continued without reducing the affected engine thrust an uncontained failure followed 3 minutes later. The ejected debris caused the almost simultaneous failure of the No 4 engine, loss of multiple hydraulic systems and all the fuel from one wing tank. The Investigation attributed the vibration to the Operator's continued use of the engine without relevant Airworthiness Directive action and the subsequent failure to continued operation of the engine after its onset.)
  • B743, vicinity Won Guam Airport, Guam, 1997 (On 6 August 1997, Korean Air flight 801, a Boeing 747-300, crashed at night at Nimitz Hill, 3 miles southwest of Won Guam International Airport, Agana, Guam while on final approach for runway 6 Left. Of the 254 persons on board, 228 were killed, and 23 passengers and 3 flight attendants survived the accident with serious injuries.)