MD-80 Limitations Flashcards
1
Q
Maximum Allowable Load Factors
A
Flaps Up +2.5g to -1.0g
Flaps Down +2.0g to 0.0g
2
Q
Max T/O Runway Slope
A
+1.7%
-2.0%
3
Q
Max Landing Runway Slope
A
+ 2.0%
- 2.0%
4
Q
Max T/O and Landing Wind Components
A
Headwind (Company) 50 kts
Tailwind 10 kts
5
Q
Max Demonstrated Crosswind Component
A
Dry Runway 30 knots Wet Runway (Company) 30 knots Rudder Manual (Company) 12 knots Rudder Restricted Landing (Company) 12 knots Braking Reported Poor (Company) 10 knots ***Do not include gusts***
6
Q
Takeoff and Landing Altitude Restrictions
A
-1,000’ PA to 8,500’ PA
7
Q
Max Runway Contamination Depths
A
T/O
Dry Snow - 4”
Slush/Standing Water - 1/2”
Wet Snow - 1”
Landing
Dry Snow - 6”
Wet Snow/Slush/Standing Water - 1”
8
Q
Vmo/Mmo
A
340 Knots, .84 Mach
9
Q
Max Rough Airspeed (TAPS)
A
285 Knots or Mach .79
Whichever is lower
10
Q
Max T/O and Landing Temperature
A
Below 2525’ PA +50C
At and above 2525’ PA ISA + 40C
11
Q
Minimum T/O and Landing Temperature
A
-54C
12
Q
Maximum Taxi Weight
A
161,000
13
Q
Maximum T/O Weight
A
160,000
14
Q
Maximum Landing Weight
A
139,500
15
Q
Maximum Zero Fuel Weight
A
122,000
16
Q
Maximum Cabin Differential Pressure
A
8.07 PSI
17
Q
Maximum Emergency Relief Pressure (Red Radial)
A
8.32 PSI
18
Q
Minimum Autopilot Altitudes
A
Takeoff - 500’ AGL
IMC Approach - 50’ below DH or MDA
VMC Approach - 50’ above TDZ
DO NOT use autopilot inside the outer marker or FAF single engine
19
Q
AC Voltage
A
115 +/- 8 VAC
20
Q
Frequency
A
400 +/- 20 CPS
21
Q
Engine Generator Load
A
Peak - Over 1.5 for 5 seconds
Maximum - 1.5 for 5 minutes
Maximum Continuous - 1.0
22
Q
APU Generator Load
A
Max Continuous Ground - 1.25
Max Continuous Flight Below 25,000’ - 1.0
Max Continuous Flight 25,000’ and above - .7
23
Q
Voltage L and R DC Buses
A
26 +/- 4 Volts
24
Q
DC TR Load
A
Max Continuous 1.0
Max Difference Between Two Load Meters Powering the Same Buses 0.3
25
Battery Voltage
Min (No Load) 25 VDC
Min (Emergency Power Switch On) 25 VDC
With charger powered and battery switch on 31 +/- 6 VDC
26
Battery Amperage
Max Charging - Steady mode (to the left) - 65 Amps
Charging - Pulse Mode - 0-40 Amps
Max Discharging (to the right) with Emerg Power Switch ON - 50 Amps
27
External Power Source Voltage and Frequency
115 +/- 8 VAC
| 400 +/- 20 CPS
28
DO NOT Reset CBs
```
Battery Charger
Auxiliary Hydraulic Pump
Fuel Pump
Fuel Quantity
Lavatory Flush Motor (Company)
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29
Flap/Slat Maximum Limit Speeds
Slats Extended/Flaps 0 - 280 Knots or .57Mach
Slats Mid/Flaps 11 - 280 Knots or .57 Mach
Slats Full/Flaps 15 - 240 Knots or .57 Mach
Slats Full/Flaps 28 - 200 Knots or .57 Mach
Slats Full/Flaps 40 - 195 Knots or .57 Mach
30
Speedbrake/Ground Spoilers Limitations
Speedbrakes may only be used in the Flaps 0 configuration.
DO NOT move speedbrakes to ground spoiler position in flight.
DO NOT extend landing gear while the speedbrakes are deployed.
DO NOT operate the airplane below 220 KIAS with the speedbrakes extended.
DO NOT arm ground spoilers prior to landing gear extension.
31
Minimum Fuel for Dispatch
4,000 lbs in each main tank
32
Minimum Fuel for Go-Around
500 lbs in each main tank
33
Maximum Permissible Imbalance
1,500 lbs
34
Maximum Permissible Aux Tank Imbalance
400 lbs
| * Does not apply to ballast fuel loads.
35
Fuel Loading
Wing Tanks Combined - 18,200 lbs
Center Tank - 20,600 lbs
Forward and Aft Aux Tanks (-83) - 3,800 lbs each
36
Hydraulic Quantity (Company)
Analog System - Minimum quantity with flaps retracted and hydraulic system pressurized - Any quantity above the red line (5 quarts)
Digital System - Minimum quantity with flaps retracted and hydraulic system pressurized - 5 quarts
37
Hydraulic Pressure
Aux Pump and Engine Driven Pump in High mode - 2800-3200 PSI
Engine Driven Pump in low mode - 1300-1700 PSI
Transfer Hydraulic Motor/Pump - 2000-3200 PSI
38
Static Port Heaters
Must be on in standing water, slush or wet snow if the temperature is 5C or below.
39
Engine Anti-ice
Must be on for taxi and T/O if visible moisture is present or anticipated and the ambient air temperature is below 6C.
*Visible moisture includes a temperature/dewpoint spread of 3C or less.
40
Airfoil Ice Protection
May be turned on at EFCA when airframe icing conditions are anticipated or encountered following departure.
***DO NOT use airfoil ice protection above 10C.
41
Inflight Ice Protection
Engine and airfoil ice protection must be used during flight when RAT is reading between +5C and -15C and icing conditions are present or anticipated.
42
Tail De-ice
Must be on
- Within one minute prior to landing flap extension
- At least once every 20 minutes
- After leaving icing conditions, prior to turning the airfoil anti-ice system off.
43
Windshield anti-ice INOP Limits
At or below 10,000' - 315 KIAS
| Above 10,000' MSL - No limit
44
Brake Temperature Limits
For setting the parking brake - 250C
| For takeoff - 205C
45
Landing Gear Operating Speeds
Extension/Extended - 300 KIAS or .70 Mach
Retraction - 250 KIAS
Tire Limit - 195 Knots GS
46
Mach/Airspeed Indicators Max Allowable Difference
Mach indication at .8 Mach - .02 Mach
250-340 KIAS - 10 Knots
150-249 KIAS - 6 Knots
80-149 KIAS - 4 Knots
47
Overspeed Warning INOP Limits
Below 25,300' - 325 KIAS
| Above 25,300' - .79 Mach
48
Minimum Flight Crew Oxygen Pressure
1,300 PSI
49
Maximum Pneumatic System Pressure During Crossbleed Starts
45 PSI
50
APU Starter Motor Duty Cycle
Two start attempts up to 90 seconds each
Five minutes off
One start attempt up to 90 seconds
Sixty minutes off
51
APU Service Ceiling
35,000'
52
APU EGT Limits
Starting: 760C for 30 seconds
| Max Continuous: Base of yellow arc
53
Cracked Windshield Operating Limits
Below 10,000' MSL - If the 3/16" inner defog glass ply of the center, FO or CA windshield is cracked - Under 235 KIAS
At or Above 10,000' MSL - No speed restriction
54
Max Residual EGT before moving fuel lever for engine start
100C
55
Engine Starter Duty Cycle
90 seconds on
5 minutes off
30 seconds on
5 minutes off
*Initial cycle may consist of any combination of starter engagement periods, not to exceed 90 seconds, as long as rotation stops between attempts. A minimum of 15 minutes is required prior to a new initial engagement.
56
RPM Limits (N1 and N2)
Max T/O (Art off) - Red radial line
Max T/O (Art on) - Orange Radial line
* Not to exceed five minutes
57
EGT Takeoff Limits
Max Red Radial Line - 625 - 5 mins
Max Red Radial Line - 630 - 2 mins
Normal (including flex) - 590 - 5 mins
Normal (including flex) - 595 - 2 mins
58
MCT
Base of yellow arc
59
Starting EGT Limits
Ground - 500C
Flight - 625C (red radial)
* Momentary for starting
60
Idle EGT
480C
*Not a limitation. Rather a guideline value, an exceedence of which should be reported to MX.
61
Acceleration EGT
Red Radial - 2 minutes
62
Minimum allowable normal oil pressure
40 PSI
63
Max Oil Temperature
Max Continuous - Base of the yellow arc/Amber light (135C)
Max - Red radial or light (165C)
***Between 135-165 allowed for a max of 15 minutes
64
Oil Quantity
Minimum 8 quarts required with engines stabilized at idle thrust.
Normal full: 12-16 quarts
65
Engine Sync
Must be off below 1,500'AGL
66
Automatic Reserve Thrust System (ART)
Must be off when using FLEX or or making a max thrust T/O
67
Shut down Criteria
EGT - Red radial/light + 15C
N1 RPM - Red radial/light + 1.2%
N2 RPM - Red radial/light + 1.0%
68
Engine Ignition Toggle Switch
```
Override Position:
2 minutes on
3 minutes off
2 minutes on
23 minutes off
```
69
Engine Ignition Rotary Switch
10 minutes on, 10 minutes off, repeat as necessary
70
Reverse Thrust (Powerback)
DO NOT apply more than 1.3 EPR during reverse taxi operations
>1.2 EPR limited to momentary as necessary to initiate power back
71
Reverse Thrust (Landing)
Dry runway max reverse - 1.6 EPR
| Wet or slippery runway max reverse - 1.3 EPR
72
Maximum Operating Altitude
37,000'
73
Resetting CBs
MX action is required to reset any CB outside QRH unless pilot can readily determine cause.
74
Solid State Battery Charger Limitations
T/O prohibited if the charging rate is greater than 20 Amps.
| T/O prohibited if BATTERY CHARGER annunciation light is illuminated.
75
AUTO SLAT FAIL Annunciator
Limit speed for slat extension to 240 KIAS
76
RUDDER TRAVEL UNRESTRICTED
Must be illuminated for takeoff
77
When must a physical check of the wing upper surfaces be completed before T/O?
1. If lower wing frost or ice on either wing is noted while performing the preflight
2. Ambient temperature is less than 14C with high humidity or visible moisture
78
EFIS Screen Limitations
If flying pilot has compacted to PFD, may fly approach down to 300 & 3/4 provided FD is operational.
If either PFD fails, the associated ND will be compacted and the following limitations apply:
1. Either pilot may fly in VMC
2. The ND compact mode is not approved as a primary flight inst.
79
APU Air Switch
Must be off for all in-flight operations
80
Engine Warm Up
Two hours or less does not require warm up
| If off for > 2 hours, warm up at thrust setting normally used for taxi operations for five minutes.
