Limitations Flashcards
Flaps down load limit
+2 to 0 g
Flaps up load limit
+2.5 to -1 g
Runway slope–takeoff
+1.7% to -2.0%
Runway slope–landing
+2.0% to -2.0%
Max tailwind
10 knots
Max crosswind
30 knots
Max and Min takeoff/landing press alt
8500 and -1000
Max and Min takeoff/landing temp
+50 C and -54 C
Landing gear (extension and extended) speed
300 kts /.70M
Landing gear retraction
250 kts/.70M
Max operating speed
340 kts/.84M
Flap placard speeds
Flap Position Limiting Speed 0° – 13° 280 kts 14° – 20° 240 kts 21° – 25° 220 kts 26° – 27° 200 kts /205 kts (MD-83) 28° – 40° 195 kts /200 kts (MD-83)
or .57M
Slats extended
Mid pos–280kts/.57M
Full ext–240kts/.57M
Turbulence penetration speed
275 to 285 kts OR .75 to .79 M
Below 10,000:
250 kts or min maneuvering speed
Max ramp weight
MD-83 ………161,000 lbs
MD-82 ………150,500 lbs
Max takeoff weight
MD-83 …………160,000 lbs
MD-82 …………149,500 lbs
Max landing weight
130,000 lbs
Max zero fuel weight
122,000 lbs
Cabin pressurization
Max cabin diff P…………8.07 psi (TWA 7.77 psi)
Max emergency pressure relief…….8.32 psi
Max ALT unpressurized flight (following depress)
14,000
Max ALT dispatched unpressurized
10,000
APU Air Switch must be OFF for all in flight operations
APU Air Switch must be OFF for all in flight operations
When starting engines with APU supplying pneumatic pressure, Air Conditioning Supply Switches must be OFF. While starting the second engine, the Air Conditioning Supply Switch for the operating engine may be in a position other than OFF if its Pneu X-Feed Valve Lever is CLOSED.
- APU operational envelope is the same as the airplane.
* Maximum altitude for APU operation is FL 350.
APU:
Starter Motor Duty Cycle
One attempt followed by 5 minutes off (first attempt)
One attempt followed by 5 minutes off (second attempt)
One attempt followed by 1 hour (60 minutes) off (third attempt)
NOTE: Starter duty cycle begins with first indication of RPM
APU: max EGT (AFM)
Starting……………….100%
Max continuous……100%
Transient …………….106%
(TWA Airplanes)
Starting………………..760°C for 30 seconds
Max Continuous …..630°C
Transient ……………..663°C
APU:
Max rotor speed
Max rpm 108% (TWA 110%)
Autothrottle
Autothrottle must be disconnected if engine stall (surge) is detected during takeoff.
Autopilot
- When using autopilot, Captain or First Officer must be in their seat with safety belt fastened so if the autopilot malfunctions, they can regain airplane control immediately.
- Do not conduct a coupled (ILS or AUTOLAND) approach if AP TRIM Light is illuminated in excess of three seconds after airplane is stabilized and tracking glide slope
Minimum Altitude for Autopilot use
Enroute: Including climb and descent (excluding approaches)………………500 ft AFL
Approaches:
-Automatic Landings…………..NONE
-ILS Coupled Approaches (other than automatic landings)
IFR………70 ft AFL
VFR……..50 ft AFL
-NON ILS/RNAV…….50 ft below MDA
Automatic landings–do not conduct IF:
- Align (ALN) mode is not displayed on FMA by 100 feet radio altitude.
- Either engine becomes inoperative at an altitude greater than 50 feet above runway.
- Automatic Ground Spoilers are not armed and operational.
- Any unusual control position or other abnormal conditions exists in the manual flight control system.
- RUDDER CONTROL MANUAL Light is illuminated.
- Landing overweight
Automatic landings–requirements (Airplane)
• The airplane is fully capable of Autoland when either:
– LMP STATUS Placard Holder – EMPTY or
– if the MEL 22-90 pocket (right side) is placarded requiring a Flight Confidence Check (FCC)
• An Autoland Pre-Flight Test must be accomplished on any DFGC to be used for an automatic landing on that flight. (AFM)
• Auto-flight system operational requirements for use of AUTOLAND are satisfied. Refer to SYSTEMS – Autoflight – Autopilot Operational Requirements
Automatic landings–requirements (Runway)
• Do not autoland on a runway that the localizer is unusable inside the runway threshold or localizer is unusable for rollout guidance
Automatic landings–requirements (Wind)
- 25 knots Maximum Headwind
- 10 knots Maximum Tailwind
- 15 knots Maximum Crosswind (may be further reduced by FM Part I, crosswind limitations).
RVSM
Manual switching to the alternate static system is prohibited for RVSM operation.
Boom Mics
Boom mics, if operative, must be used below 18,000 feet on airplanes having a placard stating this requirement installed on the Captain’s and First Officer’s instrument panel. Refer to MEL if Boom Microphones inoperative
Generator Load
Engine Generators:
Normal…………………Less than 1.0
Normal Max ………..1.5 for 5 min
Peak …………………..Over 1.5 for 5 sec
APU Generator Max (AFM):
Ground………………..1.25
In Flight:
Below FL 250………..1.0
FL 250 – FL 300 ……0.7
Above FL 300………..0.625
Generator Volts and Freq
115V +/- 8V
400 Hz +/- 20 Hz
Battery Limits
Fully charged batteries will supply Emergency Power for approximately 30 minutes.
Normal Voltage ………………………..25-33 V
Min Voltage – Emer Pwr
Sel ON (battery under load) ……25V
Amps Charging ……………………….0-40 Left
Amps – Emer Pwr Sel ON ………..10-50 Right
DC Bus Limits
Voltage…….22-30V
Load………..1.0
Normally the maximum difference between the two indications should not exceed 0.3 and both loadmeters should indicate some load.
Engine RPM
Reserve thrust–Red radial line
Max thrust–Orange radial line
Engine EGT–Starting
Ground–500 deg C–momentary
Flight–625 deg C–momentary
If EGT limit of 500°C is exceeded for any period of time (on ground), immediately shut down the engine. Record peak EGT and duration of overtemp in the E6. Maintenance action is required
Engine EGT–Takeoff
Reserve thrust:
625–5 min
Red radial line (630)–2 min
Max thrust:
590–5 min
Orange radial line (595)–2 min
Use of takeoff thrust (Max and / or Reserve) must not exceed 5 minutes. If any EGT limit (takeoff / in flight) is exceeded, refer to QRH – ENGINES - EGT Inoperative or Reads High.
Engine EGT–Max cont/climb and Max cruise
Max cont/climb–Below amber arc (580)–continuous
Max cruise–540–continuous
ART (Automatic Reserve Thrust) system
ART system must be off when using T.O. FLX mode (Standard Thrust) of thrust rating system
Minimum Oil Quantity per engine for dispatch
- Flights scheduled for 4 hours or greater – 12 qts
* Flights scheduled for less than 4 hours – 4 qts plus 2 qts per hour
Oil Temp
Maximum Continuous……..Less than Amber Arc (TWA, SDP – 135°)
Maximum for 15 minutes…….Amber Arc (TWA, SDP – 135°-165°C)
Oil press
Normal–green arc (40-55 psi)
Undesirable–Amber arc (35-40 psi)
QRH–below red radial line (35 psi)
Cold wx, outside green arc may occur until warm. Limit to idle thrust.
Oil consumption
If oil consumption of any engine is more than one quart per hour, make E6 entry. Maintenance sign-off of entry is required at next point of landing. However, sign-off may authorize continued flight to further verify consumption rate before corrective action is taken
Approach Idle Control
When operating with the Approach Idle Control System failed to the Approach Idle (High) mode on one or both engines, the ART system must be activated (solenoids actuated) prior to taxi for takeoff and prior to taxi after landing
Reverse Thrust
• Do not operate thrust reversers in flight. ***
• When using reverse thrust for power back:
– Do not exceed 1.3 EPR. ***
– Ramp slope limit range +1% to -2%.
– Thrust reversers on both engines must be operative.
– Application of brakes while backing is prohibited. – Powerback not authorized when loose dry snow, slush, or melting ice is on ramp surface or during periods of heavy rain
Starter Duty Cycle
First Attempted Start……….90 sec on, 5 min off
May consist of 90 second motoring cycle or three normal 30 second start cycles in succession. Check N2 has decreased to zero between each start attempt.
Subsequent attempts……….30 sec on, 5 min off
Engine Synchronization
Eng Sync Selector must be OFF below 1500 feet AGL.
Flaps
Do not use flap settings BETWEEN 13 and 15
Ground Spoilers
Do not arm spoiler lever prior to gear extension
Speed Brakes
- Use Speed brakes only in UP / RET or 0 / EXT configuration. (AFM)
- Do not extend or retract gear while speed brakes are deployed. (AFM)
- Moving Spd Brk / Spoiler Lever beyond EXT position in flight is prohibited. Full aft position is for ground use only
Maximum fuel imbalance
Main Wing Tanks ………….1500 lbs
Aux Tanks …………..400 lbs
Hydraulics pumps–takeoff and landing
Trans Hyd Pump …………..ON
L Eng Hyde Pump………..HIGH
R Eng Hyd Pump ………..HIGH
Aux Hyd Pump………………ON
Fuel and Aux Hyd CBs
No reset in flight
Mx contact on ground
Icing Conditions–ground and takeoff
- RAT is 6°C (42°F) or below and visible moisture in any form is present (such as clouds, fog with visibility one mile or less, rain, snow, sleet and ice crystals).
- RAT is 6°C (42°F) or below when operating on ramps, taxiways, or runways where surface snow, standing water, or slush may be ingested by the engines or freeze on the engines, nacelles, or engine sensor probes.
- RAT is 6°C (42°F) or below and the temperature – dew point spread is 3°C (5°F) or less.
NOTE: One Engine Taxi is authorized if no significant precipitation (snow, sleet or freezing rain) is occurring that could adhere to or collect in the engine inlet
Icing Conditions–In Flight
RAT is 6°C (42°F) or below and visible moisture is present in any form (such as clouds, rain, snow, sleet and ice crystals
Engine Anti-Ice
For ground, takeoff, and flight operations, engine anti-ice system must be on when icing conditions exist or are anticipated
Air Foil Anti-Ice
• In flight, airfoil anti-ice should be used when Icing Conditions exist or are anticipated.
• Do not use until reaching 1000 feet AFL after takeoff.
• Minimum duct pressure for airfoil anti-ice is 20 psi.
• When penetrating or operating in icing conditions in flight, maintain sufficient thrust to keep associated (L or R) ICE PROTECT TEMP LOW Light extinguished.
• Application of Tail De-ice is required:
– Once every 20 minutes
– One minute prior to extension of landing flaps
– After leaving icing conditions, prior to turning system off
Brake Temperature
Do not takeoff if any brake temp exceeds 205°C. **
Max Temp to Set Parking Brakes………….300°C
Brake Wear Limits
- MD-82 – flush or greater.
* MD-83 – 1/2 inch or greater.
Max tire speed
195 knots
