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EMB-145 (AE) > Limitations > Flashcards

Limitations Flashcards

1
Q

Max cabin differential pressure

A

8.1 psi

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2
Q

Auto mode normal maximum differential pressure:

A

7.8psi

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3
Q

Max negative differential pressure:

A

-0.3psi

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4
Q

Max altitude for operation after an in-flight depressurization:

A

10,000ft MSL unless MEA or other constraint requires higher.

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5
Q

Vmo/Mmo (Max operating speed)

A

320 kts/.78 Mach

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6
Q

Vmo between 8,000-10,000ft MSL

A

Red line (increases linearly from 250kts at 8,000ft to 320kts at 10,000ft)

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7
Q

Vb/Mb (Max turbulence penetration)

A

250kts/.63M, whichever is lower.

200kts at or below 10,000ft.

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8
Q

Va (Max maneuvering)

A

200kts

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9
Q
  • Vloe (gear extension)
  • Vle (gear extended)
  • Vlor (gear retraction)
A
  • 250kts
  • 250kts
  • 200kts
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10
Q

Flap placard speeds:

  • 9 degrees
  • 22 degrees
  • 45 degrees
A
  • 250kts
  • 200kts
  • 145kts
    (momentary excursions up to 155kts allowed due to gusts or turb)
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11
Q

What is important to know about full rudder deflections?

A

“A full or nearly full deflection in one direction followed by a full or nearly full deflection in the other direction, even at speeds below Va, can dramatically increase the risk of structural failure of the vert stabilizer or the rudder.”

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12
Q

Max operating altitude:

A

37,000 ft

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13
Q

Min takeoff and landing pressure altitude:

A

-1,000 ft

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14
Q

Max takeoff and landing pressure altitude:

A

8,000 ft

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15
Q

Minimum takeoff and landing temperature:

A

-40 degrees C SAT

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16
Q

Max takeoff and landing temp at -1,000ft pressure alt:

A

52 degrees C SAT

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17
Q

Max takeoff and landing temp at 8,000ft pressure alt:

A

34 degrees C SAT

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18
Q

In the event that a landing is made below min landing temp, what must be done?

A

The aircraft may not takeoff without further maintenance inspection.

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19
Q

TAT in cruise flight above 25,000ft is limited to:

A

-45 degrees C

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20
Q

Ground icing definition

A

OAT is 10 degrees C or below and visible moisture in any form is present (such as clouds, fog with vis of one mile or less, rain, snow, sleet, or ice crystals)

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21
Q

Takeoff icing definition

A

OAT is 10 degrees C or below when operating on ramps, taxiways or runways where surface snow, ice, standing water or slush may be ingested by the engines, nacelles, or engine sensor probes.

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22
Q

In-flight icing definition

A

TAT is 10 degrees C or below and visible moisture in any form is present (such as clouds, fog with vis of one mile or less, rain, snow, sleet, or ice crystals)

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23
Q

What should determine turning on the anti-ice system? (on ground)

A

Criteria specified in ground icing definition. (Do not rely on visual icing evidence or ice detector actuation. Delayed use until ice build-up is visible from the cockpit may result in ice ingestion and possible engine damage or flameout)

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24
Q

What if icing conditions exist but the Ice Detection System is not activating the Ice Protection System?

A

The crew remains responsible for monitoring icing conditions and for manual activation of the Ice Protection System if icing conditions exist.

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25
Q

Manual anti-icing operation:

  • Min temp
  • Max temp
A
  • minus 40 degrees C
  • 10 degrees C
    (use SAT on ground or takeoff, TAT for in flight)
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26
Q

When is takeoff prohibited regarding airframe contaminants?

A

Takeoff is prohibited when frost, snow, ice, or slush is adhering to the wings, control surfaces, stabilizers, pitot static ports or AOA vanes.

27
Q

Contaminated runway definition

A

More than 25% of the required field length, within the width being used, is covered by:

  • More than 1/8th inch of:
    • Standing Water
    • Slush, or
    • Wet snow
  • More than 3/4 inches of dry snow
  • Compacted snow
  • Ice
28
Q

When should a pre-takeoff tactile check be performed?

A

Whenever the OAT is 5 degrees C or below and:

  • there is visible moisture; or
  • water is present on the wing; or
  • the difference between the dew point and the OAT is 3 deg C or less; or
  • the atmospheric conditions have been conducive to frost formation
29
Q

Min alt during coupled CAT 1 ILS approach:

A

200ft

30
Q

Min autopilot engagement height after takeoff:

A

500ft

31
Q

What is the min altitude for the autopilot to be engaged on a non-precision approach?

A

MDA

32
Q

Is a single-engine go-around with autopilot engaged allowed?

A

No, it is prohibited.

33
Q

When is approach mode selection during localized capture allowed?

A

Only when the aircraft is inbound.

34
Q

Glide Slope Indication. What does FAA AD 2006-22-05 say?

A

Crossing the Outer Marker on GS, altitude must be verified with the value on the published procedure.
For aircraft with a single operating GS receiver, the approach may be flown using normal procedures no lower than the localized only MDA.
With two operating GS receivers, may be flown to published minimums for the approach using normal procedures of both GS receivers are tuned to the approach and both crewmembers are monitoring the approach using individual data and displays.

35
Q

Yaw damper operation is not authorized for:

A
  • Takeoff to 500ft AFL

- Landing

36
Q

APU limitations:

  1. Operating altitude
  2. Altitude for start
  3. Start EGT
  4. Continuous EGT
  5. Rotor speed
  6. Min start temp
A
  1. 37,000ft
  2. 30,000ft
  3. 884 degrees C
  4. 680* degrees C
  5. 104%
  6. -54 degrees C
37
Q

Can APU continuous EGT be exceeded?

A

Yes, up to 717 degrees C for 5 consecutive minutes.

38
Q

What is the minimum battery temp for APU start?

A

-20 degrees C

39
Q

APU starter limits

A

Cooling period:
- Between three consecutive attempts: 1 min OFF
- Between two series of 3 consecutive attempts: 30
min OFF

40
Q

EGPWS: The Terrain Awareness Alerting and Display must be inhibited by selecting TERR/OVRD during the following conditions:

A
  • FMS in dead reckoning mode
  • Before takeoff or within 15nm of an approach or landing at an airport with longest runway less than 3,500ft
  • Before takeoff or within 15nm of approach or landing at an airport with no published IAP
  • The airport is not included in the Allied Signal Database
41
Q

Max load on APU generator

A
  • Up to 30,000ft: 400A

- Above 30,000ft: 300A

42
Q

Main batteries:

  1. Max battery temp
  2. Min battery temp
A
  1. 70 degrees C

2. -20 degrees C

43
Q

Engine cooldown period

A

1 minute at idle or taxi thrust before shutdown

44
Q

Engine oil level: What is min?

A
  • 8 qts before engine start

- 7 qts after

45
Q

When is an engine considered cold?

A

When it has been shut down for more than 90 minutes.

46
Q

What is the engine warm up period, and what are other options?

A

Idle or taxi thrust at minimum of 4 min for cold or 2 min for warm engine. Prior to increasing N2 above 83%, oil temp must be at least 40 degrees C or engine must have been run at idle or taxi thrust for at least 8 min.

47
Q

For ALT T/O-1, T/O 1, T/O [A1/3], T/O RSV [A1/3] (5 min limit), what are limitations for:

  • ITT
  • N1 Max
  • N2 Max
A
  • 948 degrees C
  • 100%
  • 57.0-102.4%
48
Q

For Max Continuous thrust, what are limitations for:

  • ITT
  • N1 Max
  • N2 Max
A
  • 901 degrees C
  • 100%
  • 57.0-102.4%
49
Q

Min temp for starting engine (oil temp)?

A

-40 degrees C

50
Q

Min oil pressure:

A
  • Below 88% N2 is 34 psi
  • At or above 88% N2 is 50 psi. However, operation between 34 and 50 psi is permitted during takeoff and go-around phases.
51
Q

Max oil pressure

A

110 psi (top of green range), though engines may operate in amber range up to 115 psi for 5 min in all thrust modes. Between 115 and 155 psi is allowed for up to 2 min. Total time in amber range cannot exceed 5 min. Red range is not authorized.

52
Q

Can N1 and N2 turbine vibration ever exceed green range?

A

Yes, may exceed up to top of amber range for 5 min during takeoff and go-around phases or 10 seconds during remaining flight phases.

53
Q

Starter limits

A

Starting or Dry Motoring: Up to 5 min on, 5 min off.

  • or -

First to Fourth cycles: 1 min on, 1 min off.
Following cycles: 1 min on, 5 min off.

54
Q

Max altitude for flap extension

A

20,000 ft MSL

55
Q

Max airspeed after takeoff/during climb without re-trimming.

A

160 KIAS

56
Q

Max duration of ISIS when operating on batteries only:

A

40 min, but can be increased to 45 min if Pitot 3 sensor heating button is turned off when my in icing conditions.

57
Q

What approaches are prohibited using FMS for guidance?

A

ILS, LDA, SDF, and MLS approaches. Transition segments to an ILS can be flown using FMS guidance.

58
Q

Acceptable fuel

A

Jet A, Jet A-1, QAV 1, or JP8

59
Q

When is XFEED prohibited?

A

Takeoff and landing during normal operations.

60
Q

Max fuel imbalance

A

800 lbs

61
Q
  • Total usable fuel

- Total unusable fuel

A
  • 11,100 lbs at 6.7 lbs/gal

- 78 lbs unusable

62
Q

Is all indicated fuel usable?

A

Yes

63
Q

Usable fuel decreased ___ lbs in each tank if any associates eclectic pump is inop.

A

365

EMB-145 (AE) (4 decks)

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