Ch. 1 Limits Flashcards
Airplane Max Weight
- Taxi: 409K
- Takeoff: 408K
- Landing: 326K
- ZFW: 309K
Severe Turbulence Penetration Speed
290 Knots/.78M
Whichever is lower
Flap Speeds
F1: 250
F5: 230
F15: 210
F20: 210
F25: 180
F30: 170
Landing Gear Speeds
Operating: 270 Knots/0.82M
Extended: 270 Knots/0.82M
Wind Limits
1.Tailwind: 15 knots for takeoff, landing and autoland.
2. Headwind: 25 knots for autoland.
3. Crosswind takeoff and landing. 30 for takeoff and landing for RCC 6. Takeoff limited more than landing as you get lower RCCs.
Crosswind Landing.
1. CAT II Manual Landing: 15
2. Autoland: 25
3. CAT II/III Auotland: 15
*no sideslip only above 26 knots
Runway Limits
1.Max Slope: +/- 2%
2. Min runway width for 180 turn: 146 feet
3. Max depth of slush, wet snow, standing water for takeoff: 1/2 inch
4. Max depth of dry snow for takeoff: 4 inches
Max operating altitude
43,100 feet PA
Mac takeoff and landing altitudes
9,500 feet PA
Flight maneuvering load acceleration limits
- Flaps up: +2.5 to -1.0
- Flaps down: +2.0 to 0.0
Max oxygen bottle px
1,850 psi at 21C. Add or subtract 32 psi per 5C
Door Wind Limits
- Any cargo door operation: 40 knots
- Any cargo door open: 65 knots
Max cabin differential pressures
- Relief valves: 9.10
- Takeoff and landing (236 feet below airport PA): 0.125
Definition of icing
Icing conditions exist when:
• OAT on the ground and fortakeoff or TAT in-flightis 10°Cor belowand visible moisture in any form is present.
Visible moisture is a form of precipitation (e.g., clouds, fog with visibility of one mile
(1600 m) or less, rain, snow, sleet, or ice crystals).
• OAT on the ground and for takeoff is 10°C or below when operating on ramps, taxiways, or runways where surface snow, ice, standing water, or slush may be ingested
by the engines or freeze on engines, nacelles, or engine sensor probes.
Engine Anti-Ice Operation - On the Ground
Engine anti-ice must be selected ON immediately after both engines are started and remain on during all ground operations when icing conditions exist or are anticipated, except when the temperature is below –40°C OAT.
Engine Anti-Ice Operation - In Flight
Engine anti-ice must be ON during flight when icing conditions exist or are anticipated, except during climb and cruise when the temperature is below -40°C SAT. Engine anti-ice must be ON prior to and during descent in icing conditions, including temperatures below -40°C SAT.
Operation in Ice Crystal Icing Conditions
Engine anti-ice must be ON when ice crystal icing conditions exist, even when the temperature is below -40°C OAT. Do not use anti-ice if OAT or TAT exceeds 10°C.
Note: Ice crystal conditions exist when in visible moisture and one or more of the
following indications are present:
• Amber or red weather radar returns below the airplane.
• Appearance of liquid water on the windshield at temperatures too cold for rain (the sound is different than rain).
• The autothrottle is unable to maintain the selected airspeed.
• TAT indication on EICAS stays near 0°C.
Autopilot/Flight Director System
Use of aileron trim with the autopilot engaged is prohibited.
Do not use FLCH on final approach below 1,000 feet AFE.
Do not use the autopilot below 100 feet radio altitude at airport field elevations above 8,500 feet.
Autopilot Minimum Altitudes: Engagement After Takeoff
Must not be engaged below 1,000 feet AFE
Autopilot Minimum Altitudes: Approach
- Coupled ILS without autoland: 50 AGL.
- Non prec w/ VNAV: 50 below DA, 100 below DDA.
- Non prec w/ V/S: 50 below MDA, 100 below DDA.
Automatic Landing
- Autoland authorized for flaps 25 or 30 only.
- Automatic landings can be made using flaps 25 or 30 with both engines operative, or one engine inoperative.
HF Radios
Do not operate HF radios during refueling operations
VHF Radios
Do not use the center VHF for ATC communications with ACARS operational.
Engine Limit Display Markings
- Maximum/Minimum Limits: Red
- Cautionary Limits: Amber
Note: The engine limit display marking on EICAS must be used to determine
compliance with the maximum and minimum limits and precautionary ranges. If EICAS markings display more conservative limits than any engine limits specified in this section, the limit markings on EICAS must be observed
Engine EGT Limitations
- Takeoff: 960C, 5 mins
- Max Continuous: 925C, Continuous
- Starting: 870C, max transient for 40 secs. 750C, unlimited.
Engine RPM Limitations
N1 (low px): 117.5%
N2 (high px): 112.5%
Engine Indicating
Flight crew shall not blank engine vibration display during takeoff
Engine Starter Duty Cycle
Normal Duty Cycle
Five minutes on, followed by one-half minute off per minute on.
Re-engagement speed
• 0% N2 - recommended
• 0-20% N2 - normal
Caution: Re-engagement is not recommended above 20% N2 except in case of fire.
Caution: Re-engagement above 30% N2 may result in starter or gearbox damage.
Engine Oil Pressure
Min px: 10 psi
Oil Temp
- Continuous Operation: 160C
- 15 Min Limit: 175C
APU Limits
The APU starter duty cycle is a maximum of three consecutive starts or attempts within
a sixty-minute period.
Flight Controls
Avoid rapid and large alternating control inputs, especially in combination with large changes in pitch, roll, or yaw (e.g., large side slip angles) as they may result in structural failure at any speed, including below VA.
Flaps Operating Altitudes
The maximum altitude for flap extension is 20,000 feet.
RVSM Altimetry
Standby altimeters do not meet altimeter accuracy requirements of RVSM.
The maximum allowable in-flight difference between Captain and First Officer altitude displays for RVSM operations is 200 feet.
The maximum allowable on-the-ground differences between Captain and First Officer altitude displays for RVSM operation at sea level are 40 between CA and FO, 75 between field elevation and CA or FO.
Single Operational FMC
With a single operational FMC, during VOR approaches, one pilot must have raw data from the VOR associated with the approach displayed on the PFD/ND in the VOR mode, no later than the final approach fix.
Fuel Temperature
- Max JP4/JetB: 43C (110F)
- Max all other types: 49C (120F)
- Min (all types): 3C (5F) above the freeze point
*No JP-4/Jet B on revenue flights
Fuel Quantity
- Either Main Tank: 6,010 gal/40,267 lbs
- Center Fuel Tank: 11,900 gal/79,730 lbs
- Total: 23,920 gal/160,264 lbs
- varies w/ fuel density.
- based on 6.7 lb/gal
Fuel Usage I (No center tank fuel)
Use tank-to-engine fuel feed for takeoff and landing with all operable main tank boost pumps on and the crossfeed valve(s) closed**.
** The crossfeed valves are open for minimum fuel operation, and may be opened to correct fuel imbalance.
Fuel Usage II (Fuel in center tank)
Use center tank fuel for all operations with all operable boost pumps on and the crossfeed valve(s) closed** until center tank fuel is depleted, then use FUEL USAGE I.
Intentional dry running of a center tank fuel pump (CTR L FUEL PUMP or CTR R FUEL PUMP message displayed on EICAS) is prohibited.
Fuel Imbalance
• 2,500 lb - when total main tank fuel is less than 48,000 lb.
• 1,500 lb - when total main tank fuel is greater than 48,000 lb.
Non-Standard Fuel Load Allowable ZFW
The center tank may contain up to 22,050 pounds of fuel with less than full main tanks provided:
• Center tank fuel weight plus actual zero fuel weight does not exceed the maximum zero fuel weight, and
• Center of gravity limits are observed.
Weather Radar
Avoid weather radar operation in a hangar.
Important Airplane Dimensions
- Total Height: 52 feet
- Total Length: 180 feet 3 inches
- Wingspan: 156 feet 1 inch
- Length between gear: 74 feet 8 inches
- Width between gear: 30 feet 6 inches
