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C-12U3 > Limits > Flashcards

Limits Flashcards

1
Q

TORQUE LIMITS

A

Normal …………………………..400‐2230 FT‐LB
Maximum @ 2000 RPM …………..2230 FT‐LB
5 Second Transient. …………………2750 FT‐LB
<1600 RPM ……………………………1100 FT‐LB Max
2120 RPM………………………………..1800 FT-LB Max

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2
Q

PROPELLER LIMITS

A

-Minimum at Low Idle ……………… ≥1150 RPM
(^@CONTINOUS UNFEATHERED GROUND OPS^)

Normal …………………………………… 1600‐2000 RPM
Maximum …………………………………2000 RPM
5 Second Transient…………………….2200 RPM Max Reversing …………………………………1900 RPM

1800 FT/LB MAX AT 2120 RPM

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3
Q

ITT LIMITS

A

ITT Normal …………………………….400‐800C Maximum Continuous ……………. 800C
Reduced Engine Life ………………. >770C
5 Second Transient…………………..850C
Maximum Starting (5 Seconds > 800C) ……………………… …………….1000C
Max Reversing ………………………… 750C

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4
Q

N1 LIMITS

A

Low Idle ………………………… 58% Maximum ……………………….101.5%
10 Second Transient ………..102.6%
Max Reversing ……………….. 88%
Minimum High Idle……………70%

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5
Q

OIL TEMPERATURE LIMITS

A

Minimum for Starting …………… ‐40C
Normal ………………………………….0‐99C
Maximum ……………………………… 99C
10 Minute Transient ……………… 104C

An engine oil temperature of 74 to 80 °C is recommended.

A minimum oil temperature of 55 °C is recommended for fuel heater operation at takeoff power. (AKA OIL-to FUEL Heat Exchange)

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6
Q

OIL PRESSURE LIMITS

A

Minimum…………………………………60 PSI
<21,000’ Caution Range …………. 85‐100 PSI
<21,000’ Normal Range ………….. 100‐135 PSI

> 21,000’ Normal Range …………… 85‐135 PSI Maximum Starting with Cold Oil … 200 PSI

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7
Q

PNEUMATICS psi range

A

Normal ………………………………. 12‐20 PSI Maximum …………………………… 20 PSI

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8
Q

PROPELLER DEICE AMPS LIMITS

A

Normal ……………………………. 18‐24 AMPS

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9
Q

WEIGHT LIMITS

A

Ramp …………………………………….14,090 LBS
Takeoff (>10,000’ & >60 Min Duration) 14,000 LBS
Takeoff with Tailwind ……………….. ……..12,500 LBS

Maximum Landing ………………………….. 12,500 LBS
Maximum Zero Fuel …………………. ………11,000 LBS
Cabin Airstair Door ………………………………300 LBS
Toilet Seat for Takeoff & Landing ……………238 LBS
Cabin Section Flooring No Seat Tracks ….. 100 LBS/ft.2

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10
Q

Vmo (Below 11,500 Feet)

A

259 KIAS

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11
Q

Mmo (>11,500 to 35,000 Feet)

A

0.52 MACH

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12
Q

Windshield Icing (Max Speed)

A

226 KIAS

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13
Q

Approach Flaps Speed

A

200 KIAS

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14
Q

VA (Flaps retracted)

A

181 KIAS

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15
Q

Vle & Vlo

A

181 KIAS

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16
Q

Turbulent Air Penetration Speed

A

170 KIAS

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17
Q

Vlo (Retracting)

A

163 KIAS

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18
Q

Vfe

A

157 KIAS

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19
Q

Max Tire Speed

A

155 KIAS Standard Gear

139 KIAS High Flotation

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20
Q

Minimum Speed in Sustained Icing

A

140 KIAS

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21
Q

Engine Restart Speed (Min Using No Starter)

A

140 KIAS

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22
Q

Maximum Glide Speed @ 14,000 lbs

A

130 KIAS

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23
Q

Vyse @ 12,500 lbs (Blue Line)

A

121 KIAS

24
Q

Minimum Coupled Approach

A

120 KIAS

25
Q

Vsse (Minimum)

A

104 KIAS

26
Q

Vmca (Sea Level)

A

86 KIAS

27
Q

FUEL LIMITS

A

Maximum Fuel Imbalance ……………1,000 LBS
No Takeoff Range ……………………… 0‐265 LBS
FUEL PRESS annunciator illuminated …..10 hours

Fuel shall not be added to auxiliary tanks unless the corresponding main tank is full.

Crossfeed only during single engine operation.

28
Q

Brake Deice Limits

A
  • OFF >15C
  • No longer than 10 min with gear retracted
  • OFF during single engine operations

≥85% N1 when used w/ surface deice

29
Q

Max Operating Altitude

A

35,000’ MSL

But not to exceed cabin pressure altitude of 10,000 ft IAW AR 95-1.

When operating with inoperative yaw damper, the altitude limit is 17,000 ft if the aircraft is not equipped with dual aft body strakes.

30
Q

Max Operating Ambient Temp (SL-25,000)

A

ISA+37C

31
Q

Max Operating Ambient Temp (>25,000’)

A

ISA+31C

32
Q

Ice Vane Use

A

Visible Moisture and <=+5C

33
Q

Ice Vane Retraction

A

≥15C

34
Q

Min FAT for Deicing Boots

A

‐40C

35
Q

Pitot‐Heat Ground Limit

A

15 min

36
Q

Max Demonstrated Crosswind

A

25 kts @ 90*

37
Q

Max Cabin Differential

A

6.6 PSI

38
Q

Starter Limit

A

40s ON/60s OFF/
40s ON/60s OFF/
40s ON/30m OFF

39
Q

AC Frequency

A

390 to 410 Hz

40
Q

AC Voltage

A

110 to 120 VAC

41
Q

DC Voltage

A

27.5 to 29.0 VDC

42
Q

Min Battery Voltage for Start

A

22 VDC

43
Q

Min Battery Voltage to Connect External Power

A

20 VDC

44
Q

Landing Gear Limits

A

6 cycles, 5 min between, then 15 min cooldown

45
Q

Limitations with Ferry Fuel Tanks

M4V2AN

A
  • MAX Cabin air pressure rate of descent must not exceed 1500FPM
  • MAX Aft CG must not exceed 196.4 in..
  • MAX GTOW 14,500lb
  • Maximum fuel 240 gal total.
  • VNE 216 kts
  • VMO 0.43
  • Autopilot greater than 12,500 lb is prohibited
  • NO flight into moderate turbulence. Shall be avoided.
46
Q

GENERATOR LIMITS FLIGHT

A

Maximum generator load is limited to 100% for flight up to FL310.

88% above FL310

47
Q

GENERATOR LIMITS GROUND

A

LOAD MIN. GAS GENERATOR RPM N1
0% to 75% - 58% (W/O AC) 65% (W/ AC)

75% to 80% - 60% (W/O AC) 65% (W/ AC)

80% to 85% - 65% (W/O AC) 65% (W/ AC)

*Right engine only, after stabilized.

48
Q

FLIGHTS OVER 12,500 GTOW

A
  • Shall be flown on a smooth, paved runway. -Takeoffs shall not be performed with a tailwind.
  • Flown at or above 10,000’ AGL for a min. of 60 mins
49
Q

MAXIMUM DESIGN MANEUVERING SPEED.

A

flaps retracted is 181 KIAS
flaps fully extended 111 KIAS

at 12,500 lb.

50
Q

PROHIBITED MANEUVERS

A

(1) Spins.
(2) Aerobatics of any kind.
(3) Abrupt maneuvers above 181 KIAS.

51
Q

Flight load factor limits (12,500 lb)

A

+3.17 to -1.27Gs Flaps up

+2.0 to -0Gs Flaps down.

52
Q

Flight Load limits (14,000#)

A

+3.10 to -1.24 Gs Flaps Up

+2.0 to -0Gs Flaps Down

53
Q

BANK AND PITCH LIMITS

A

a. Bank limits are 60° left or right.

b. Pitch limits are 30° above or below the horizon.

54
Q

Turbulence Limits

A

Aircraft will not be intentionally flown into known or forecasted extreme turbulence or into known severe turbulence.

Turbulent air penetration airspeed is 170 KIAS.

55
Q

ICING LIMITATIONS

A

Exit ASAP when:

  • Unexplained 30% increase of torque needed to maintain air-speed in level flight,
  • A cumulative total of two or more inches of ice accumulation on the wing
  • An unexplained decrease of 15 KIAS
  • An unexplained deviation between pilot and copilot airspeed indicators

a. The maximum airspeed for effective windshield anti-icing is 226 KIAS.
b. The minimum airspeed for sustained icing flight is 140 KIAS.
c. Sustained flight in icing conditions with flaps extended is prohibited except for approach and landing.
d. Use of the autopilot during severe icing conditions is prohibited.

56
Q

LAND AS SOON AS POSSIBLE

A

defined as landing at the nearest suitable landing area (e.g., open field) without delay. The primary consideration is to ensure the survival of occupants.

57
Q

LAND AS SOON AS PRACTICABLE

A

is defined as landing at a suitable landing area(airport). The primary consideration is the urgency of the emergency.

C-12U3 (2 decks)

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