Ch-4 Flashcards
Taxi and takeoff gross weight limitations:
Maximum normal: 164,000
Maximum alternate: 175,000
Landing gross weight limitations
Recommended: 142,000
Maximum normal: 164,000
Maximum alternate 175,000
Outboard tanks max
8310
Inboard tanks max
7650
Total main tanks
31,920
Aux tanks
5810
Total internal fuel weight max
43,540
External tanks
8,900
Fuselage tank
24,390
Total internal and external (fuel)
85,730
Primary fuel management
-Outboards contain 500-1000 more fuel than inboards
-main tanks full except start/taxi/takeoff fuel
-no less than 7060 in 1 & 4 and no less than 6410 in tanks 2 & 3 when external tanks have fuel
Alternate enroute fuel management
-May extend airframe service life
-when external and/or auxiliary tanks contain useable fuel 1&4 are maintained at max and 500-1000 more than 2&3
-w/ no fuel in aux & externals, 1&4 full, 2&3 used till 1520. 1&4 then used till 1520, tank-engine from there
Secondary fuel management
Anything not primary or alternate
Recommended loading limits
Area A: 3 g (symmetrical)
Area B & C: 2.5 g (symmetrical)
Alternate (cautionary) loading limits
Area D: 2.25 g (symmetrical)
Loading not recommended
Area E: 2 g (symmetrical)
Emergency situations
Landing gear doors removed
200 gear up
168 gear down
Flight is not permitted with forward nose gear door ______ and the aft door ______
Removed, installed
GS location - % Mac
15-30
External tank limits when fuselage tank is installed
If fuel is in the fuselage tank, external tanks should be empty when the fuselage tank contains less than 20,000 lbs. otherwise restricted to level flight
Taxing with inner brake locked, braking during revers taxiing
Prohibited
Taxi speeds & nose gear deflection
20 degrees
60 degrees
20 knots
5 knots
Taxiing w/ alternate gross weight
-Taxi & takeoff only on smooth surfaces free of dips depressions and holes
-max 10 knots
-taxi shortest distance possible
-minimum braking
-light braking in turns
-limit nose wheel to 5 degrees
-avoid abrupt or hard uneven brake applications
Max tire speeds
Nose-
Main-
139
174