Limitations Flashcards
VMO
360 KTS (350KTS < FL140)
MMO
0.90 M
VA Speed
295 KTS into 340 KTS (@FL310)
Turbulence double penetration speed
290 KTS < FL250 or 310 KTS / M0.84
- SPD below = fly Min SPD + 15 KTS (any altitude)
VLO / VLE ( Gear operating / extended speed)
270 KTS / 0.82M
Max tailwind takeoff / landing
T/O + LDG - 15 KTS
Unreliable AIrspeed MAX AOA SPD
290 KTS (<FL350) - 270 KTS (FL350-380) - 260 KTS (FL380-400) - 250 KTS (> FL400)
Max Taxi Speed (slippery / 90’ turn) and straight line
3kts slippery turn / 10kts normal 90’ turn / 30kts straight
Max Angle Speed / min SPD
min Maneuver SPD (VREF 30 + 80) into M0.78
Also on FMC VNAV CLB page (Vref30+100) > FL200 or flap up spd
Max rate speed
VREF 30 + 140 / M.82 (-8) or M0.84 (-9/10)
Max tire speed
235 MPH (up to 260MPH Non Normal)
Max RWY Slope
+/- 2%
Max operating ALT
FL431
MAX T/O + LDG Press ALT
8000ft
Max operating temperature (on ground)
T/O + LDG - ISA + 39.4’c (54’C)
MAX CAB DIFF / T/O + LDG
Inflight 9.9 PSI
T/O LAND - 0.11 PSI
Eng anti ice (GND / Manual inflight)
10’C (GND) / 15’C TAT (inflight) to -40’
(don’t use above 10c on ground or 15’c TAT inflight)
Wing Anti-ice do not use TEMP
15’ TAT Manual - inflight only (N/A on ground)
AP min Engage Height after T/O
200ft
Autoland Max field elevation
8400ft
MAX X-WND / HW / TW Autoland
MAX X-WND - 25kts / HW - 25kts / TW - 15kts
MIN / MAX GS angle Autoland
2.5’ to 3.25’
Autoland configs + flap settings
F20, 25, 30 AEO + EO (LAND 2 / LAND 3)
Manual LDG AP disengage height
100ft. (-8 or -10) / 135ft (-9)
Secondary or Direct law with flaps extended
don’t follow FD in FLCH mode
Do not use during refueling
HF radio
Max Flap extension ALT
FL200
STBY Altimeter limitation
not approved RVSM
MAX ALT difference between CAPT / COP altimeter and Field ELEV (for RVSM)
+/-75ft
When cruising < OPT ALT
set FMC STEP to ZERO (accurate FUEL / ETA)
USE OF VNAV / LNAV Prohibited when
on QFE
Speed brakes prohibited when alternate gear extension used
-9 aircraft only
Alternate gear extension at Flaps 20 - max SPD 190 KTS
-9 only
GPWS - look ahead terrain alerting and terrain display prohibited
Within 15nm of airport when not in database
Brakes category
A (-8) / C (-9) / D -10
Approved flight rules
VFR, IFR, Icing Conditons, Extended Over water
G limits Flaps Up
G limits Flaps Down
G limits Flaps Up - +2.5G to -1G
G limits Flaps Down - +2G to 0G
APU inspection required before start when
heavy snow / icing conditions
Engine fire bottles must be warmed to -23’C for
1.5hrs before eng start
IRS alignment required
> 18hrs since last
MIN O2 Pressure
1250 PSI (at 21’c INTL) 860 domestic
MIN HYD QTY
No RF shown
Max BRK TEMP preflight
2 units (3 units AE -8 no BTMS)
minimum turn 180 radius
45.9m (-8) / 51.5m (-9) (2.3m buffer)
ICAO taxiway (main gear) clearance
4.5m
ICAO taxiway width
23m
MIN TAIL clearance height
42in (-8) / 29in (-9)
TAIL Strike Pitch ATT
11.2’ (-8) / 9.7 (-9)
Body Contact LDG Flaps 25/30 (gear compressed)
9.3’ (-8) / 7.8’ (-9)
AP DISC (on approach when required)
after reaching DA or descending below MDA
MAX EGT Starting
RR 700’C (GND) / 900’C (inflight) (750’c GE GND / 875’c FLT or 975’C )
MAX EGT Continuous
850’C (1030’C GE)
MAX EGT Takeoff
900’C (AEO 5 mins) (10 mins EO or thrust loss) (1065’C GE)
Maximum Transient Temp
GE only 1070’C
MAX OIL TEMP
201’C (15 min) (177’C GE)
MAX OIIL TEMP continuous
193’C (196’C package 10 / 160’C GE)
MIN OIL PRESS
30 PSI (<30 PSI ok for NEG G ops for 15 sec) (10 PSI GE)
MIN OIL TEMP start
-40’C
MIN OIL TEMP for high thrust ops
+40’C (> bottom of temp scale GE)
MIN OIL QTY
16 QTS
MAX ENG VIB
4.0 units
ENGs running at IDLE before takeoff
1 min before T/O (5 min package 10 / 3min GE)
ENG cool down after LDG Single engine taxi
3 mins GE or 5min (RR)
ENG taxi thrust GND max X-WND / TW
X-WND > 45 KTS or TW > 42 KTS
Do not run engines wind
> 65KTS (RR only)
MAX N1
101.5 % (108.5% GE)
MAX N2?
103.5 % (117.5% GE)
MAX N3
100.2 % (-8 B) / 101.0 % (-8 C and -9) (101.5% package 10) (no N3 spool GE)
ENG AUTO START limit cycle
3 mins
do not start both engines same time
OAT > 40’c
Fuel approved
Jet A, A1, JP5, JP8, TS1
(JP-4 and Jet B Prohibited)
MIN FUEL TEMP
-29’C (GND)
-42’C and +3’C > freezing TEMP (inflight)
MAX FUEL TEMP
49’C on ground
65’C (Inflight) / 57’C >FL350 for TS-1
Fuel density allowed
6.3 to 7.1 lbs / GAL
C Fuel tank limitations
Up to 22,000lbs allowed in C TANK with MAINS not full (total < MZFW)
C tank pumps on when C tank fuel - > 16,000lbs (EICAS message also)
Fuel loading in any sequence (main tanks must be full if Centre tanks used also)
MAX FUEL Imbalance
2500lbs (up to 41,900 Lbs then reducing to 1500lbs (>68,300lbs FOB)
Usable Fuel MAIN
Usable Fuel CENTER
MAIN - L / R each 39,547lbs (-8) / 39,192lbs (-9 / -10)
CENTER - 157,620 lbs (-8) / 158,614lbs (-9 / -10)
C Tank Limitations
<16,000lbs of fuel in center tank - only use center pumps in the cruise (advisory) until ‘FUEL LOW CENTER’ message appears then C tanks off
Fuel Jettison - prohibited
flaps 30
Fuel Freezing point - JET A / A1
Jet A - -40’c
Jet A1 - -47’c
Max X Wind -8
Take off 40kts
Landing 37kts
Max X Wind - 9
Take off 33kts
Landing 40kts
Max X Wind - 10
Take off 37kts
Landing 35kts
Max X Wind (Wet / contaminated)
Wet - 25kts
Flooded 15KTS (10kts RWY < 2500m)
RWYCC 5 - 25
RWYCC 4 - 20 (15)
RWYCC 3 - 20 (15)
RWYCC 2 - 15 (10*)
RWYCC 1 - 10 **(RWY <2500m)
Take off / Landing Prohibited
- water or slush 13mm or more
- wet snow 51mm or more
- Dry Snow 71mm or more (T/O)
- Dry Snow 153mm or more (LDG)
- Braking action VERY POOR (RWYCC 0)
Dimensions -8/-9/-10
Length - 56.7m -8
- 62.8m -9
- 68.3m -10
Wingspan- 60.1m
Eye height
cockpit eye height above ground (flare) - 5.4m
Eye height / length - 14.1m
MTOW
502,500lbs (-8C/CE/L)
553,00lbs (-9K)
535,000lbs (-10K)
MLW
380,000lbs (-8C/CE/L)
425,00lbs (-9K)
445,000lbs (-10K)
MZFW
355,000lbs (-8)
400,00lbs (-9)
425,000lbs (-10)
EO cruise DIST 60 mins
Still wind:
-8 A = 435nm
-8 C/L = 429nm
-9 D = 420nm
-9 K = 431nm
-10 K = 431nm
Only for planning purposes
Minimum taxiway width for 90’ turn
19m
Minimum width pavement 180’ turn
-8 = 48m
-9 = 53m
-10 = 59m
Minimum width pavement 180’ turn
-8 = 48m
-9 = 53m
-10 = 59m
Alternate Ventilation system differences
-8 different to the -9/-10 follow QRH specifically for each model)
What is Modal Suppression Accelerometers (MSA) and model?
Detects vertical / lateral acceleration help for cabin comfort
-9/-10 only
What is Hybrid laminar flow control systems
Tiny holes leading edges wind / vertical stab create laminar flow around stabilizers reducing drag / -9 and -10 only
Early Door Function (Main gear)
Main gear door opens 1 sec after liftoff (closes if gear not selected up within 30 secs) enhances PERF -9/-10 only
When is megaphone installed?
All AC except -8 AC and 2 -9 AC
What Is semi levered gear ?
Only -10 - extra actuator attached to strut reduces load pressure on landing / improves T/O performance
Main gear door strut?
Only -10 model
CAC motor cooling diverter Valve and exhaust duct?
Under AC for additional cooling of CAC (-10 only)
