Max takeoff weight limiting factors
#1
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Gets Weekends Off
Joined: Feb 2006
Posts: 564
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Remind me of the takeoff weight calculations.
Is it the lower of
Structural weight
MLW plus Fuel Burn
Field length
Landing weight for field?
Can someone please clarify? On EMB145
Is it the lower of
Structural weight
MLW plus Fuel Burn
Field length
Landing weight for field?
Can someone please clarify? On EMB145
#3
Gets Weekends Off
Joined: Jun 2013
Posts: 501
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From: A320 FO
#4
Obstacle clearance, OEI
Or
Climb limited by certification--2.5% for twins, 2.7 for tri-motors, 3.0 for quads
Or
115% of all engine take-off to 35'. Unlikely for twins, less unlikely for tri-motors, sometimes for lower-thrust quads
GF
Or
Climb limited by certification--2.5% for twins, 2.7 for tri-motors, 3.0 for quads
Or
115% of all engine take-off to 35'. Unlikely for twins, less unlikely for tri-motors, sometimes for lower-thrust quads
GF
#5
Gets Weekends Off
Joined: Aug 2008
Posts: 2,413
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From: forever fo
1. Structural mtow.
2. Runway mtow.
3. Climb mtow.
4.landing weight max or mlw
A. Max landing structural
B. Max landing runway
C. Max landing climb
Hint on the line for landing it's always a unless your in key west or similar and it's raining.
Also number 4 and it's sub options aren't a hard requirement to take off if the company ops specs allow so.
#6
Line Holder
Joined: Jul 2005
Posts: 278
Likes: 2
From Boeing JTPM:
For the given takeoff conditions, the allowable takeoff weight will be the smallest of:
• the certified limit weight,
• the field length-limited weight,
• the climb-limited weight,
• the obstacle-limited weight including the effects of any turn procedures,
• the tire speed-limited weight,
• the brake energy-limited weight,
• the “return-to-land” limit weight, (McDonnell-Douglas series without fuel dump)
• the landing-limited weight,
• the enroute limit weight,
• the pavement strength limit weight, where appropriate,
• the noise limit weight, where applicable.
For the given takeoff conditions, the allowable takeoff weight will be the smallest of:
• the certified limit weight,
• the field length-limited weight,
• the climb-limited weight,
• the obstacle-limited weight including the effects of any turn procedures,
• the tire speed-limited weight,
• the brake energy-limited weight,
• the “return-to-land” limit weight, (McDonnell-Douglas series without fuel dump)
• the landing-limited weight,
• the enroute limit weight,
• the pavement strength limit weight, where appropriate,
• the noise limit weight, where applicable.
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