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Airnorth EMB120 Systems > Limitations > Flashcards

Limitations Flashcards

1
Q

Max aircraft speed
Mmo / Vmo

A

Mmo= 0.52
Vmo= 270-272kts
Max speed 250kts bellow 8000ft.

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2
Q

Va

A

200kts

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3
Q

Max Flap speeds
Vfe

A

Flap 15 = 200kts
Flap 25 = 150kts
Flap 45 = 135kts

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4
Q

Max Landing gear operation
Vlo = Vle

A

200kts

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5
Q

T6 limits

A

Max 800 C continuous
upto 816 for 5min max takeoff only
816 - 850 20sec max
850-950 5sec max

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6
Q

Torque limits

A

Take off 100%
During take-off only up to 110% 5min max
Transient 120% 20 sec limit

Climb and cruise 84%

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7
Q

Np limits

A

100 - 101 %

transient 110% 20sec limit

Max revers 80.5% steady state.

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8
Q

Nh limits

A

100%
102%

62%minimum ground idle

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9
Q

NL limits

A

100%
102%

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10
Q

Oil temp limits

A

-40’C start
-40’C to 115’C ground idle
climb and take-off 45’C - 115’C
115’C to 125’C max 15 minute limit

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11
Q

Oil Press limit

A

40psi minimum
40psi-55psi only with NH below 75%
55-65psi normal
70psi Max during start
40-70psi transient

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12
Q

Starter cycle limits

A

30sec on 3min off
30sec on 3min off
30sec on 30min off

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13
Q

Use of prop sync

A

For take-off and landing prop sync must be off.

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14
Q

Max Fuel in each tank
unusable
imbalance
Additional unusable?

A

5732 lbs = 1311kg = 1670 L total usable

49.6 lbs = 11kg = 14 L unusable

600 lbs = 272kg = 346 L imbalance

Additional unusable with ejector pumps inop
79.6 lbs

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15
Q

Weight limits

A

MRW = 12070kg
MTOW = 11990kg
MLW = 11700kg
MZFW = 10900kg

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16
Q

Max differential Cabin pressure

A

7.2psi

17
Q

Aircraft temperature limits

A

minimum -54’C
Landing bellow -40’C use abnormal landing procedure

18
Q

Max Aircraft temp for sensitive equipment regarding the availability of air conditioning?

A

This limit is to prevent sensitive equipment overheating.

Air con functioning then limit is ISA +35’C

Air con Not functioning
Alt alerter off = ISA +20’C
Alt alerter on = ISA +15’C (up to 20’C for 30min with radio master switch on)

20 and 15’C limits do not apply up to 2min for limited take-off procedures

19
Q

Max operational Altitude

A

EEC and Engine Bleed on = 32,000ft
One off one on = 25,000ft
both EEC and Engine Bleed OFF = 20,000ft

Limited to 30,000ft unless the front RH aisle passenger seat is reserved for the flight attendant.

20
Q

Max takeoff and landing altitude

A

10,000ft pressure alt.
Above 8,000ft only allowed with EEC off.

21
Q

Max windshield wiper speed

A

160kts

22
Q

Minimum Nh required for pneumatic de-icing

A

80%

23
Q

Max Generator Loads

A

main gen:
On the ground - 400A (380A if ISA+27 or more)
Up to 27,000ft 400A
above 27,000ft 380A

Aux Gen:
Up to 18,000ft 150A
above 18,000ft 140A

APU gen:
Up to 16,000ft 400A
above 16,000ft 290A

24
Q

Max battery Temperature

A

70’C

25
Q

Flight load limits

A

-1g to +2.8g Flaps up
0g to 2g with flap extended

26
Q

Landing brake energy chart Exceeded limit

A

Takeoff can not be planned for 26min

27
Q

Icing conditions speed limit

A

Flaps and gear up 165kts
Flaps 15 gear up 140kts

28
Q

Autopilot and yaw damper Limits

A

Off for takeoff and landing and bellow 200ftAGL

To engage autopilot:
min 110kts
or
min 120kts single engine

29
Q

Max EGT for APU during start

A

974’C @50% RPM

732’C @90%RPM

30
Q

Minimum speed to start the APU in flight

A

135kts

31
Q

Stable approach Criteria?

A

The airplane should be stabilised at 1000 ft HAA if in IMC and non-normal
conditions, and no lower than 500 ft HAA if in VMC conditions. A approach on
the EMB120 is considered stabilised when all of the following criteria are met:
– The airplane is on the correct flight path,
– Only small changes in heading and pitch are required to maintain the
correct flight path,
– Fly ILS approaches within one dot of the glideslope and localizer,
– The airplane approach speed is VREF + Wind Correction, not exceeding
VREF +20 kt and not less than VREF,
– The airplane is in the correct landing configuration,
– Sink rate is no greater than 1000 ft/min; if an approach requires a sink
rate greater than 1000 ft/min, conduct a special briefing,
– Power setting is appropriated for the airplane configuration,
– All briefings and checklists have been conducted.

32
Q

Baggage compartment weight limits

A

700 kg total A +B compartment

XUB:
550kg total A+B

33
Q

Oxygen pressure required:
Pilot + Copilot
Pilot + Co pilot + Observer

+
XUB

A

1300psi Pilot + Copilot
1470psi Pilot + Co pilot + Observer

1270psi Pilot + Copilot
1780psi Pilot + Co pilot + Observer

34
Q

How many Static wicks are required?

A

5 on each aileron
4 on each elevator
2 on the rudder

only one can be missing from any control surface

35
Q

How many Vortex generators are there?

A

13 pairs on each wing
7 pairs on the rudder
4 each side of the vertical stab
4 each side under the horizontal stab
1 large on the right wing root

Airnorth EMB120 Systems (13 decks)

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