Boeing 777 Landing Gear

Landing Gear

Boeing B777 landing gear is the largest landing gear and the largest tires ever used in a commercial jetliner. Each main gear tire of a 777-300ER carries a maximum rated load of 64,583 lb (29,294 kg) when the aircraft is fully loaded, the heaviest load per tire of any production aircraft ever built.

Boeing 777 has retractable tricycle-type landing gear. Measco and Messieur Bugatti developed the main landing gear under a joint agreement, which features six-wheeled bogies. Control of the steering rear axles is automatically linked to the steering angle of the nose gear.

The Triple Seven main landing gear is fitted with Honeywell Carbenix 4000 brakes. Initial activation of the brakes during taxiing applies the brakes to alternate groups of three wheels only in order to minimise wear on the brakes. The nose gear is twin-wheeled and is steerable.

Landing Gear Incident

On March 1, 2005, after a PIA Boeing 777-200ER landed at Manchester International Airport, England, fire was seen around the left main landing gear. The crew and passengers were evacuated and fire was put under control. Some passengers suffered minor injuries and the aircraft sustained minor damage.

On January 17, 2008, British Airways Flight 38, a 777-200ER flying from Beijing to London, crash-landed approximately 1,000 feet (300 m) short of London Heathrow Airport's runway 27L, and slid onto the runway's threshold. This resulted in damage to the landing gear, wing roots and the engines.

Boeing 777-300ER Specification

	777-300ER
Cockpit crew	Two
Seating capacity, typical	365 (3-class)
Length	242 ft 4 in (73.9 m)
Wingspan	212 ft 7 in (64.8 m)
Wing Sweepback	31.64°
Tail Height	61 ft 5 in (18.7 m)
Cabin Width	19 ft 3 in (5.86 m)
Fuselage Width	20 ft 4 in (6.19 m)
Cargo Capacity	7,080 ft³ (200 m³)
Empty Weight	366,940 lb
	(166,881 kg)
Maximum take-off weight	775,000 lb
	(351,534 kg)
Cruising Speed at 35,000 ft cruise altitude	0.84 Mach (560 mph, 905 km/h, 490 knots)
Maximum Cruise Speed at 35,000 ft cruise altitude	0.89 Mach (587 mph, 945 km/h, 510 knots)
Maximum Payload Range	5,500 nm
	(10,190 km)
Maximum Range	7,930 nm
	(14,685 km)
Takeoff run at MTOW ISA+15 MSL	10,500 ft (3,200 m)
Maximum Fuel Capacity	47,890 US gal
	(181,280 L)
Service Ceiling	43,100 ft (13,140 m)
Engine (x 2)	GE90-115B
Thrust (x 2)	GE: 115,000 lbf (510 kN)

Boeing 777-300 Specification

	777-300
Cockpit crew	Two
Seating capacity, typical	368 (3-class)
	451 (2-class)
Length	242 ft 4 in (73.9 m)
Wingspan	199 ft 11 in (60.9 m)
Wing Sweepback	31.64°
Tail Height	60 ft 8 in (18.5 m)
Cabin Width	19 ft 3 in (5.86 m)
Fuselage Width	20 ft 4 in (6.19 m)
Cargo Capacity	7,080 ft³ (200 m³)
Empty Weight	353,600 lb
	(160,120 kg)
Maximum take-off weight	660,000 lb
	(299,370 kg)
Cruising Speed at 35,000 ft cruise altitude	0.84 Mach (560 mph, 905 km/h, 490 knots)
Maximum Cruise Speed at 35,000 ft cruise altitude	0.89 Mach (587 mph, 945 km/h, 510 knots)
Maximum Payload Range	3,800 nm
	(7,035 km)
Maximum Range	6,015 nm
	(11,135 km)
Takeoff run at MTOW ISA+15 MSL	11,200 ft (3,410 m)
Maximum Fuel Capacity	45,220 US gal
	(171,160 L)
Service Ceiling	43,100 ft (13,140 m)
Engine (x 2)	PW 4098
	RR 892
	GE90-94B
Thrust (x 2)	PW: 98,000 lbf (430 kN)
	RR: 92,000 lbf (400 kN)
	GE: 94,000 lbf (410 kN)

Boeing 777 Freighter Specification

	777 Freighter
Cockpit crew	Two
Seating capacity, typical	N/A
Length	212 ft 1 in (63.7 m)
Wingspan	212 ft 7 in (64.8 m)
Wing Sweepback	31.64°
Tail Height	61 ft 1 in (18.6 m)
Cabin Width	19 ft 3 in (5.86 m)
Fuselage Width	20 ft 4 in (6.19 m)
Cargo Capacity	22,455 ft³(636 m³)
Empty Weight	326,000 lb
	(148,181 kg)
Maximum take-off weight	766,000 lb
	(347,450 kg)
Cruising Speed at 35,000 ft cruise altitude	0.84 Mach (560 mph, 905 km/h, 490 knots)
Maximum Cruise Speed at 35,000 ft cruise altitude	0.89 Mach (587 mph, 945 km/h, 510 knots)
Maximum Payload Range	4,895 nm
	(9,065 km)
Maximum Range	4,895 nm
	(9,065 km)
Takeoff run at MTOW ISA+15 MSL	11,600 ft (3,536 m)
Maximum Fuel Capacity	47,890 US gal
	(181,280 L)
Service Ceiling	43,100 ft (13,140 m)
Engine (x 2)	GE90-110B
Thrust (x 2)	GE: 110,000 lbf (480 kN)

Boeing 777-200LR Specification

	777-200LR
Cockpit crew	Two
Seating capacity, typical	301 (3-class)
Length	211 ft 1 in (63.7 m)
Wingspan	212 ft 7 in (64.8 m)
Wing Sweepback	31.64°
Tail Height	61 ft 9 in (18.8 m)
Cabin Width	19 ft 3 in (5.86 m)
Fuselage Width	20 ft 4 in (6.19 m)
Cargo Capacity	5,302 ft³ (150 m³)
Empty Weight	326,000 lb
	(148,181 kg)
Maximum take-off weight	766,000 lb
	(347,450 kg)
Cruising Speed at 35,000 ft cruise altitude	0.84 Mach (560 mph, 905 km/h, 490 knots)
Maximum Cruise Speed at 35,000 ft cruise altitude	0.89 Mach (587 mph, 945 km/h, 510 knots)
Maximum Payload Range	7,500 nm
	(13,890 km)
Maximum Range	9,450 nm
	(17,500 km)
Takeoff run at MTOW ISA+15 MSL	11,600 ft (3,536 m)
Maximum Fuel Capacity	53,440 US gal
	(202,290 L)
Service Ceiling	43,100 ft (13,140 m)
Engine (x 2)	GE90-110B
	GE90-115B
Thrust (x 2)	GE: 110,000 lbf (480 kN)
	GE: 115,000 lbf (510 kN)

Boeing 777-200ER Specification

	777-200ER
Cockpit crew	Two
Seating capacity, typical	301 (3-class)
	400 (2-class)
Length	210 ft 1 in (63.7 m)
Wingspan	199 ft 11 in (60.9 m)
Wing Sweepback	31.64°
Tail Height	60 ft 9 in (18.5 m)
Cabin Width	19 ft 3 in (5.86 m)
Fuselage Width	20 ft 4 in (6.19 m)
Cargo Capacity	5,302 ft³ (150 m³)
Empty Weight	315,000 lb
	(142,900 kg)
Maximum take-off weight	656,000 lb
	(297,560 kg)
Cruising Speed at 35,000 ft cruise altitude	0.84 Mach (560 mph, 905 km/h, 490 knots)
Maximum Cruise Speed at 35,000 ft cruise altitude	0.89 Mach (587 mph, 945 km/h, 510 knots)
Maximum Payload Range	5,800 nm
	(10,740 km)
Maximum Range	7,700 nm
	(14,260 km)
Takeoff run at MTOW ISA+15 MSL	11,600 ft (3,536 m)
Maximum Fuel Capacity	45,220 US gal
	(171,160 L)
Service Ceiling	43,100 ft (13,140 m)
Engine (x 2)	PW 4090
	RR 895
	GE90-94B
Thrust (x 2)	PW: 90,000 lbf (400 kN)
	RR: 95,000 lbf (420 kN)
	GE: 94,000 lbf (410 kN)

Boeing 777-200 Specification

	777-200
Cockpit crew	Two
Seating capacity, typical	305 (3-class)
	400 (2-class)
Length	209 ft 1 in (63.7 m)
Wingspan	199 ft 11 in (60.9 m)
Wing Sweepback	31.64°
Tail Height	60 ft 9 in (18.5 m)
Cabin Width	19 ft 3 in (5.86 m)
Fuselage Width	20 ft 4 in (6.19 m)
Cargo Capacity	5,302 ft³ (150 m³)
Empty Weight	307,000 lb
	(139,225 kg)
Maximum take-off weight	545,000 lb
	(247,210 kg)
Cruising Speed at 35,000 ft cruise altitude	0.84 Mach (560 mph, 905 km/h, 490 knots)
Maximum Cruise Speed at 35,000 ft cruise altitude	0.89 Mach (587 mph, 945 km/h, 510 knots)
Maximum Payload Range	3,250 NM
	(6,020 km)
Maximum Range	5,235 nm
	(9,695 km)
Takeoff run at MTOW ISA+15 MSL	8,200 ft (2,500 m)
Maximum Fuel Capacity	31,000 US gal
	(117,000 L)
Service Ceiling	43,100 ft (13,140 m)
Engine (x 2)	PW 4077
	RR 877
	GE90-77B
Thrust (x 2)	PW: 77,000 lbf (330 kN)
	RR: 77,000 lbf (330 kN)
	GE: 77,000 lbf (330 kN)