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Sister VA's

Boeing 777 spec

 

General Information:
Boeing 777-200 / -200IGW / -300

777-200    777-200IGW*   777-300
Dimensions:
Length                   209' 1"        209' 1"               242' 4"
Wing Span             199'11"       199'11"              199'11"
Height                    60' 9"         60' 9"                 60' 9"

Weights (lbs):
Empty                   302,900       317,600             347,900
Fuel                      208,630       304,340             304,340
Payload                 64,055         64,055               77,286
MTOW from          506,000       580,000              580,000 Maximum Take-off Weight
     to                    545,098       648,000              660,000
MLW                     445,079       460,095             524,095 Maximum Landing Weight
MZFW                   420,000       430,000             495,000 Maximum Zero Fuel Weight

* Increased Gross Weight

Engines: 777-200 / -200IGW

  • 2 * 377kN General Electric GE 90-85B Turbofans (84,825 lb) Thrust
  • 2 * 373kN Pratt & Whitney PW4084 Turbofans (84,000 lb)
  • 2 * 384kN Rolls-Royce RR Trent 884 Turbofans (86,400 lb)
  • 2 * 400kN Rolls-Royce RR Trent 892 Turbofans (90,000 lb) for 777-200IGW

777-300

  • 2 * 423kN General Electric GE 90-95B Turbofans (95,175 lb) Thrust
  • 2 * 436kN Pratt & Whitney PW4098 Turbofans (98,100 lb) thrust
  • 2 * 423kN Rolls-Royce RR Trent 895 Turbofans (95,175 lb) thrust

Operating Performance:

  • Mmo 0.84 Mach Max. Operating Speed
  • Mne 0.87 Mach Never Exceed Speed
  • Vmo 330 knots Max. Operating Speed IAS
  • Vne 511 knots Never Exceed Speed IAS
  • Vat 138-145 knots Landing @ Runway Threshold Speed @ MLW full flap/Gear down

* DO NOT Exceed 250kts @ or Below 10,000ft Altitude.*

Take-off speed - See Table:

  • V1 is the go or no-go decision speed
  • VR is the rotation speed ie lift-off speed
  • V2 is the safe climb-out speed

ILS & Approach Speed -See Vref Speed Table:

  • Vat = 1.30 Vso (Vso is stall speed @ full flap/gear down)
  • For Approach Speeds Vapr add wind factor of 1/2 headwind component+gust (max 20 kts)
  • Vref is the reference Landing speed @ a certain Flap/Weight settings
  • i.e. Vref30 is the Landing speed with flap 30° (Indicated Air Speed IAS)
 Aircraft Weight      Flaps/KIAS    Take-off @ Flaps 15°     Flap Maneuver Speed
     kg      lbs  Vref30° 25°  20°     V1    Vr    V2       0°  1°  5° 15° 20° 25°
300,000  661,500     166  174  180    157   162   168      246 226 206 186 186 174
290,000  639,450     164  171  177    153   159   165      244 224 204 184 184 171
280,000  617,400     161  168  174    150   156   163      241 221 201 181 181 168
270,000  595,350     157  165  171    147   153   160      237 217 197 177 177 165
260,000  573,300     154  162  168    144   150   157      234 214 194 174 174 162
250,000  551,250     151  159  164    140   146   154      231 211 191 171 171 159
240,000  529,200     148  156  161    137   143   152      228 208 188 168 168 156
230,000  507,150     145  152  158    133   139   149      225 205 185 165 165 152
220,000  485,100     142  149  154    129   136   146      222 202 182 162 162 149
210,000  463,050     139  145  150    125   132   143      219 199 179 159 159 145
200,000  441,000     135  142  147    121   128   140      215 195 175 155 155 142
190,000  418,950     132  138  143    116   125   136      212 192 172 152 152 138
180,000  396,900     128  134  139    111   121   133      208 188 168 148 148 134
170,000  374,850     124  131  135    106   117   130      204 184 164 144 144 131
160,000  352,800     121  127  131    101   112   126      201 181 161 141 141 127
150,000  330,750     117  123  127     96   108   123      197 177 157 137 137 123
140,000  308,700     113  118  123     92   104   119      193 173 153 133 133 118

Flap Maneuver Speed       Speeds Below Normal Cruise above FL240
Flap     Speed KIAS       Alt from   to      Speed
Flaps 0   Vref30+80          FL240   FL299   250 KIAS
Flaps 1   Vref30+60          FL300   FL350   280 KIAS
Flaps 5   Vref30+40          FL350   Above   0.82 M
Flaps 15  Vref30+20
Flaps 20  Vref30+20
Flaps 25  Vref25
Flaps 30  Vref30

* DO NOT Exceed 250kts @ or Below 10,000ft Altitude.*

Cruise Speeds:

  • Max Cruise Speed 499 KTAS
  • Cruise Altitude 30,000 - 35,000ft depending on weight.
  • Long Range Cruise is 484 KTAS @ FL350 (35,000ft)
  • Typical Cruise Speed is 0.82 - 0.83 Mach @ FL300 - FL350 (30,000-35,000ft)

Max Altitude: 43,000 ft

  • MTOW Ceiling: 36,800 ft
  • ETOPS Ceiling: 15,900' (One Engine Out)

* Do Not Exceed Max Cruise Speed *

When flying long routes (over 5hrs) with MTOW, climb to FL300 & hold Alt with cruise speed 0.80 - 0.81 Mach , then fly that level for 30-45 min. then climb to FL310 - 320 @500 fpm and so on until you reach FL350 @ 0.80 - 0.83 Mach

Try not exceed 91% N1 during cruise in order to have available thrust for emergencies & be more efficient with fuel burn. The reason I mentioned the above procedure with X-Plane is to avoid too much nose pitch up attitude which put the aircraft wing @ higher angle of attack causing speed bleed leading to a clean stall if you are not careful.

The time taken between cruise climb is important because the aircraft will burn fuel (losing weight), your speed will gradually increase @ the same N1 setting , your aircraft pitch up will decrease helping you for the next cruise climb. Rate of climb at these alts should be between 300-800 fpm in order not to lose speed rapidly. The more you climb to FL350 the more the air density is less the better the engine fuel consumption (more range)& the less is thrust.

I usually output data for N1 on the screen & switch the EICAS (Engine Indicating and Crew Alerting System) to fuel management to observe aircraft status on fuel burn & range.

You should carry fuel enough for the flight + 40mis for diversions & emergencies i.e. if your trip is 5hrs long, you load fuel for the required 5hrs flight plus fuel for an extra 40 mins. You should know your aircraft's average fuel consumption for the type of engines fitted with in order to determine the fuel weight required for the flight. Remember that weight is drag, drag is more fuel burn which costs money (for virtual pilots flying for virtual airlines), so do not carry fuel more than you need. You have a destination to go to & MLW limit. You do not want to arrive to your destination with total weight above MLW!.

FAR Field Lengths

                    777-200    777-200IGW    777-300
Take-off        8,300ft       10,004ft             11,611ft
Landing         6,000ft        6,200ft              6,350ft

Maximum Range

                777-200       777-200IGW     777-300
n miles     3,780-4,930    5,960-7,230        5,380

CHECKLISTS :

Before Take-off:

  • Allowable Take-off Weight (MTOW or lower) Checked
  • Vital Data Checked
  • Flaps/Slats Set
  • Flight Controls Checked
  • Trim Set
  • Autopilot Controls Off
  • Transponder Set

After Take-off :

  • Landing Gear Up/Off
  • Flaps UP
  • Altimeters Set/CrossChecked
  • Descent Briefing:
  • Safety Altitudes-Trans Level
  • STAR-Approach
  • Runway State - Reverse - Brakes
  • Airfield
  • Go-Around - Diversion

Descent/Approach:

  • Landing Data Set/Checked
  • Briefing Confirmed
  • Vref Set
  • Minima Set
  • Trans Level
  • Altimeters Set/CrossChecked

Final Landing :

  • Gear Down/Green
  • Flaps/Slats Set
  • Speed Brakes Armed
  • ILS freq Tuned
  • Autobrakes Set

After Landing/Shutdown :

  • Strobes Off
  • Stabilizers Set
  • Speedbrakes Down
  • Flaps/Slats Up
  • Fuel Pump/Control Off
  • Parking Brakes Set

ROC Rate Of Climb

Below 10,000ft

  • max. 3800 fpm @ 250kts

* DO NOT Exceed 250kts @ or Below 10,000ft Altitude.*

Above 10,000ft to Cruise Flight Level FL

  • 2000 - 2500fpm from 10,000 - 20,000ft @ 260 - 350kts
  • 1800 - 1500fpm from 20,000 - 26,000ft
  • 1500 - 400fpm from 26,000 - 35,000 ft depending on weight.

ROD Rate Of Descent

  • From Cruise FL to 10,000ft hold 0.79 Mach until 290 kts, reduce thrust for 2500 fpm
  • Below 10,000ft rate of descent varies with ATC requirements, but is between 800 - 3000fpm
  • In normal conditions 250kts idle descent , then slow & configure speed so as to not add power until on Glide Slope.
  • Use speedbrakes to slow down
  • Glide Slope descend is between 1500 - 500fpm depending on your situation
  • At Runway Threshold descend between 400 - 200fpm for a smooth touchdown landing

ETOPS Extended Twin engine OPerationS :

If an engine failure occur during cruise forcing an engine shutdown, fly a descend profile on the remaining engine to FL160 (16,000ft) & hold speed between 300 - 430kts. Do not forget to trim to compensate for your lost engine. The B777 can fly the remaining trip on one engine & land @ MLW or lower.

The Boeing 777 is fitted with engines certified ETOPS for 180 minutes.

This is very essential if you fly long routes over water i.e. LAX-Honolulu.

If both engines go out on you then apply EROPS rule ' Engines Refuse toOperate ,Please Swim':).

Did you know that the B777 outer engine diameter approximately equals the fuselage diameter of a Boeing 737?

Did you know that the total horizontal tail area of B777 is approx. equal the total wing area of a B737 !!!

Flight Patterns

Take-off:

  • Select Take-off Flap , Set LNAV (HDG SEL) / VNAV (VVI)
  • Autothrottle is set to desired speed
  • Thrust set by Manually advancing the thrust levers, when stabilized engage Autothrottle.
  • Take-off thrust by 80 knots , V1 , Vr Rotate aircraft to Max 8° pitch up attitude.
  • When Positive Rate of Climb V2 : Gear Up & LNAV/HDG SEL/GPS engaged
  • VNAV /VVI engaged.
  • V2+15kts, or V2 to V2+15kts (1 engine)
  • Acceleration height , Flap retraction altitude (about 1000')
  • Retract flaps on schedule (See Table)
  • Climb Thrust (2 engines)
  • Accelerate & Climb @ Vref30+80 kts (see Table)
  • Flaps Up : Max Continous Thrust (1 engine)
  • After Take-off Checklist
  • 3000' AGL : One engine or 2 engine climb speed.

ILS Approach:

On Radar Vectors:

  • HDG SEL
  • Appropriate pitch attitude.

Before Approaching Intercept Heading :

  • LNAV/HDG SEL for Roll mode
  • VNAV/VVI for pitch mode.
  • Flaps 1

Approaching Intercept Heading :

  • Flaps 5

Intercept Heading:

  • Arm APP

Localizer capture:

  • Final Approach course heading

Glideslope Alive:

  • Gear down
  • Flaps 20 (Optional landing flaps 1engine)
  • Arm Speedbrake

Glideslope Intercept (Fix LOM,MKR,DME):

  • Landing Flaps (Optional Flaps (2 engine, optional 1 engine)
  • Set Missed Approach Altitude
  • Landing Checklist

Missed Approach:

  • Max Thrust/Autothrottle
  • Flaps 20 (Flaps 5 optional 1 engine)
  • Go-around attitude
  • Go-around thrust
  • Positive Rate of Climb , Gear Up
  • Above 400' select LNAV/HDG SEL
  • At Flap retraction altitude, set speed for desired flap setting.
  • Retract flaps on schedule
  • After flap retraction , select VNAV/VVI as required
  • Verify tracking route & altitude capture
  • After take-off checklist

Non-Precision Approach:

On Radar Vectors:

  • HDG SEL
  • Appropriate pitch attitude.

Before Approaching Intercept Heading :

  • LNAV/HDG SEL for Roll mode , VNAV/VVI for pitch mode.
  • Flaps 1

Approaching Intercept Heading :

  • Flaps 5

Intercept Heading:

  • Arm LNAV/HDG SEL

Inbound (1.5nm)

  • Gear Down
  • Flaps 20 (optional landing flaps 1 engine)
  • Arm Speedbrake
  • Set MDA
  • Landing flaps (2 engine, optional 1 engine)

AT FAF Descend to MDA

  • Monitor VNAV/VVI path
  • Landing Checklist

Runway in sight:

  • Intercept landing profile & disconnect Autopilot
  • Disconnect Autothrottle (VNAV only)

At MDA : Minimum Descent Altitude

  • Set Missed approach altitude

Missed Approach:

  • Max Thrust/Autothrottle
  • Flaps 20 (Flaps 5 optional 1 engine)
  • Go-around attitude
  • Go-around thrust
  • Positive Rate of Climb , Gear Up
  • Above 400' select LNAV/HDG SEL
  • At Flap retraction altitude, set speed for desired flap setting.
  • Retract flaps on schedule
  • After flap retraction , select VNAV/VVI as required
  • Verify tracking route & altitude capture
  • After take-off checklist

Circling:

Configuration at MDA:

  • Gear down
  • Flaps 20 (landing flaps optional)
  • Arm Speedbrake

Minimum Descent Altitude (MDA)

Approaching first half of the Circle:

  • Landing flaps (if not previously selected)
  • Landing checklist

Intercept Landing Profile & disconnect autopilot

Missed Approach:

  • Max Thrust/Autothrottle
  • Flaps 20 (Flaps 5 optional 1 engine)
  • Go-around attitude
  • Go-around thrust
  • Positive Rate of Climb , Gear Up
  • Above 400' select LNAV/HDG SEL
  • At Flap retraction altitude, set speed for desired flap setting.
  • Retract flaps on schedule
  • After flap retraction , select VNAV/VVI as required
  • Verify tracking route & altitude capture
  • After take-off checklist

Visual Traffic Pattern:

  • Entering downwind , Flaps 5
  • Maintain 1500' Alt & 2nm away/parallel from runway
  • Prior to turning base
  • Gear down
  • Flaps 20
  • Start descent as required
  • During Base leg:
  • Landing Flaps (2 engines , optional 1 engine)
  • Landing Checklist
  • Final should be between 700-500' altitude
  • Stabilized on profile
  • Go-around:
  • Go-around thrust
  • Go-around Altitude
  • Flaps 20 (flaps 5 optional 1 engine)
  • Positive rate of climb gear up
  • Retract flaps on schedule
  • Verify tracking route & altitude capture
  • After take-off checklist


MLW = Maximum Landing Weight
   MTO = Maximum Take-off Weight
   V2  = Safe Climb-out speed (The speed after Vr, Rotation speed or Lift-off speed)
   Vat = Landing speed at runway threshold Flap/Gear down (X-Plane @ 50'...25'...10')
   Vapr= Approach Speed , just add 5-10kts to Vat with flap/gear down @ MLW or less
   Vno = Normal Operating Speed
   Vmo = Maximum Operating Speed
   Vne = Never Exceed Speed
FL350  = Flight Level 35,000'

Thanks to Mohammed Gazzawi, Designer/Test Pilot MGXP

 

 

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