"Good To Know" Limitations

Question 1

Flight in or near moderate to heavy rain, hail, or sleet?

Answer 1

Follow turbulent air penetration procedures

Engine start switches FLT

Question 2

Maximum pressure Altitude for takeoff and landing

Answer 2

8,400 ft.

Question 3

Safety relief differential pressure

NG/CL

Answer 3

9.10/8.65 psi

Question 4

How long should APU be operating before opening the bleed valve?

Answer 4

1 minute

CL: APU bleed switch should be OFF 2 minutes before APU shutdown

Question 5

Maximum gear extension speed

Answer 5

270/ .82

Question 6

Maximum speed with Mach Trim inoperative?

NG/CL

Answer 6

.82/.74

Question 7

When is LNAV prohibited?

Answer 7

If the message “UNABLE REQD NAV PERF-RNP” is displayed.

Question 8

Normal AC Frequency

Answer 8

400 cps +/- 10 cps

Question 9

How long should you wait to turn on Engine and APU bleeds after de-icing?

Answer 9

1 minute

Question 10

Is aircraft dispatchable on revenue flights if aircraft must remain unpressurized?

Answer 10

NO

Question 11

Maximum gear extended speed?

Answer 11

320 / .82

Question 12

Maximum gear retraction speed?

Answer 12

235

Question 13

Minimum required fuel for ground operations of electric hydraulic pumps?

Answer 13

1,675 pounds in each wing

Question 14

Speedbrake load alleviation system INOP / speed and weight Limitations?

Answer 14

• 700 = 320 / 143,000

- 300 = 320 / 125,000

Question 15

When must autothrottles be disengaged?

Answer 15

Severe Turbulence

50 ft. Below DA/DDA, but no less than 50 ft. AGL.

Only when CMD is engaged and momentary CWS.

During TCAS RA

Question 16

Maximum crossing for takeoff and landing?

Answer 16

10-35 knots depending on runway conditions. Chart

Question 17

Minimum oil quantity requirements

Answer 17

60%

70% if at maintenance base

<65% requires servicing when terminating

Question 18

Minimum autopilot altitude

Answer 18

DA / DDA -50 feet, but not less than 50 feet AGL

Question 19

Time from APU shutdown to battery OFF.

Answer 19

2 minutes after APU GEN OFF BUS light extinguishes.

Question 20

When are autobrakes required?

Answer 20

On any runway that is not DRY

<4000 RVR or 3/4 mile

Flaps <30 ( single-engine or abnormal config)

Question 21

When must gasper fan be turned off? CL

Answer 21

Above 10,000 ft

Question 22

What is the requirement for starting the APU while airborne?

Answer 22

Only when directed by QRH or OPC

Question 23

Maximum fuel imbalance

Answer 23

1,000 pounds

Question 24

Maximum brake temperature for ground turn around? NG/CL

Answer 24

425 F

Must be measured between 10-15 minutes after arrival

Question 25

Can aircraft be dispatched if all lavatories are inoperative?

Answer 25

No

Question 26

What is the maximum cabin differential for takeoff and landing?

Answer 26

0.125 psi

Question 27

What is the Maximum Turbulence Penetration Speed above 15,000 ft NG/CL

Answer 27

280/.76 289/.73

Question 28

Engine starter duty cycle limits? | NG/CL

Answer 28

2 minutes ON with 10 seconds between start attempts 2 minutes ON with 20 seconds OFF. 2 minutes ON, then 3 minutes cooling before next and each subsequent attempt.

Question 29

Considerations regarding thrust reverser operation during takeoff and landing?

Answer 29

Prohibited when one reverser is inoperative and: Runway is contaminated Braking action is less than GOOD.

Question 30

Maximum headwind component for HGS AIII mode?

Answer 30

25 kts (OPC doesn't highlight this limitation)

Question 31

Maximum Turbulence Penetration Speed below 15,000 ft.?

Answer 31

250 KIAS

Question 32

Maximum wind velocity for takeoff and landings

Answer 32

50 kts steady 70 kts peak gust

Question 33

Minimum turn time for -800 if maximum quick turn around weight is exceeded?

Answer 33

48 minutes Non-reducible

Question 34

Maximum tailwind component, including gusts, for takeoff and landing?

Answer 34

5-10 kts depending on runway condition

Question 35

Maximum allowable inflight difference between Captain and First Officer altimeters in RVSM?

Answer 35

200 ft

Question 36

When can VNAV be engaged?

Answer 36

Takeoff Initial climb Missed Approach until flap retraction is complete.

Question 37

Maximum tire speed?

Answer 37

195 kts

Question 38

When are you allowed to cycle a CB?

Answer 38

Only when directed by QRH, AOM, FOM, MEL or Ops Binder Or approved by maintenance

Question 39

When is flaps 40 landing recommended?

Answer 39

Negative OPC stopping margin under 2 minutes for flaps 30 < GOOD braking Weather at or near minimums for approach

Question 40

Minimum autopilot engagement Altitude

Answer 40

1,000 ft.

Question 41

Normal AC voltage output?

Answer 41

115 volts +/- 5 volts

Question 42

Minimum LNAV engagement altitude?

Answer 42

NG- can be engaged on ground CL- 400 ft.

Question 43

Normal battery voltage range?

Answer 43

22-30 volts

Question 44

When is Engine anti-ice required?

Answer 44

Icing conditions: During climb and cruise above -40 Any temperature during descent

Question 45

When must APU bleed be turned OFF?

Answer 45

Ground air connected Isolation valve and #2 bleed OPEN #1 bleed is OPEN

Question 46

Minimum runway MU value for takeoff and landing?

Answer 46

20 or less for any sexton of runway.

Question 47

Classic minimum oil quantity?

Answer 47

2 gallons with < 2 hour block 2.5 gallons with > 2 hour 3 gallons departing from maintenance base Captain must arrange for oil servicing when terminating <2.5 gallons