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Coops Crazy Adventure > Limits > Flashcards

Limits Flashcards

1
Q

Minimum Nf RPM (Power-on)

A

97%

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2
Q

Maximum continuous Nf RPM (Power-on)

A

100%

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3
Q

Avoid Range Nf (Steady State Operation)

A

71-88% with engine torque greater than 33%

  • Holding Nf in this range for a cumulative 60 seconds requires turbine replacement and should be avoided.
  • Flight within this range shall be included on a MAF to ensure documentation and include duration
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4
Q

Steady State definition (Nf)

A

Holding Nf within a 2% range

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5
Q

Idle Ng RPM

A

62+/-2%

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6
Q

Normal Operating Range Ng RPM

A

60-105%

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7
Q

Maximum Transient Ng RPM

A

106% for 15 seconds

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8
Q

Minimum Engine Oil Pressure

A
  • 50 psi with Ng below 79%
  • 90 psi with Ng between 79-94%
  • 115 psi with Ng above 94%
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9
Q

Maximum Engine Oil Pressure

A

130 psi, except for temporary conditions up to 150 psi immediately following a cold-weather start

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10
Q

Engine Oil Temperature

A

0-107 degrees C

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11
Q

Nf Overspeeds

A

Determined on a sliding scale depending on TOT, Nf percentage, and duration

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12
Q

Engine Oil Temperature Gauge Colors

A

Green-0-107 degrees C

Red-107 degrees C

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13
Q

Engine Oil Pressure Colors

A 
Red-50 psi
Yellow-50-90 psi
Green-90-115 psi (Single Wide Arc)
Green-115-130 psi (Double Wide Arc)
Red-130 psi
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14
Q

Transmission Oil Pressure Colors

A

Green-30-50 psi

Red-30, 70 psi

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15
Q

Transmission Oil Temperature Colors

A

Green-15-110 degrees C

Red-110 degrees C

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16
Q

Loadmeter Colors

A

Red-70%

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17
Q

Fuel Pressure Colors

A

Red-4.0 psi

Green-4.0-30 psi

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18
Q

Airspeed Colors

A

Green-0-130 knots
Red-130 knots
Blue-100 knots

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19
Q

Fuel Quantity Colors

A

Red-1.03 gallons/empty

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20
Q

Torque Colors

A

Green-0-85%
Yellow-85-100%
Red-100%

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21
Q

Turbine Outlet Temperature Colors

A 
Green-100-738 degrees C
Yellow-738-810 degrees C
Red-810 degrees C
Red circle-843 degrees C
Red triangle-927 degrees C
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22
Q

Gas Producer Colors

A

Green-60-105%

Red-105%

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23
Q

Dual Tachometer Power Turbine Indicator Colors

A

Red-97%
Green-97-100%
Red-100%

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24
Q

Rotor Indicator Colors

A

Yellow-50-60%
Red-90%
Green-90-107%
Red-107%

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25
Q

Turbine Outlet Temperature (During Start)

A

Temperature Range: Time Limit:

  • Up to 810 degrees C -No Limit
  • 810-927 degrees C -10 seconds maximum
  • 927 degrees C -Maximum
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26
Q

Turbine Outlet Temperature (During Power Transient)

A

Temperature Range: Time Limit:

  • Up to 738 degrees C -No Limit
  • 738-810 degrees C -5 minutes
  • 810-843 degrees C -6 seconds
  • 843 degrees C -Maximum
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27
Q

Minimum fuel reserve requirement (B/C)

A

10 gallons

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28
Q

Minimum Nr (Power-on)

A

97%

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29
Q

Maximum continuous Nr (Power-on)

30
Q

Normal operating range Nr (Power-off)

31
Q

Transmission Oil Pressure Limits (Continuous Operation)

32
Q

Minimum Transmission Oil Pressure Limits

33
Q

Maximum Transmission Oil Pressure Limits

34
Q

Transmission Oil Pressure Limits that dictate a MAF

35
Q

Transmission Oil Temperature Limits

A

15-110 degrees C

36
Q

Maximum torque (Continuous Operation)

37
Q

Military power limit

A

100% for 5 minutes

38
Q

Maximum transient torque

A

100-110 for 5 seconds

39
Q

Allowable fuel boost pump pressure

A

4.0-30 psi

40
Q

Standby generator speed limit

A

Prolonged operation of the standby generator while it is the primary power supply to the essential No. 1 bus is prohibited at speeds below 65 KIAS.

41
Q

Rotor brake limit

A

Should be applied between 38-30 % Nr during normal operations

42
Q

Starter limitation Note

A

If a light-off occurs within the first 20 seconds of the start sequence, the starter may be operated for 60 seconds within a 60 second cooling period. Three such attempts can be made in a 30-minute period, then wait 30 minutes to allow the starter to cool.

43
Q

Starter limits

A 
External Power:           Battery:
25 seconds-ON           40 seconds-ON
30 seconds-OFF         60 seconds-OFF
25 seconds-ON           40 seconds-ON
30 seconds-OFF          60 seconds-OFF
25 seconds-ON           40 seconds-ON
30 minutes-OFF          30 minutes-OFF
44
Q

Airspeed limit Note

A

All airspeed values are calibrated airspeed except when the indicated airspeed is specifically stated.

45
Q

Vne FCS OFF

46
Q

Vne FCS ON

47
Q

Sideward/rearward

A

Density Altitude Feet Max Sideward Max Rearward
0-1,000 ft 25 15
1,000-2,000 ft 20 15
2,000-4,000 ft 15 15
4,000-6,000 ft 10 10
6,000-10,000 ft 5 5

48
Q

Maximum rate of climb

49
Q

Minimum IFR speed (Vmini)

50
Q

Maximum airspeed with any combination of doors off

51
Q

Maximum autorotational airspeed

52
Q

Turbulence penetration airspeed

53
Q

Maximum operating altitude:

FCS OFF: 3,000-pound gross weight and below

A

20,000 ft pressure altitude

18,000 ft density altitude

54
Q

Maximum operating altitude:

FCS OFF: Above 3,000-pound gross weight

A

16,000 ft pressure altitude

13,000 ft density altitude

55
Q

Maximum operating altitude:

IFR or FCS ON: 3,000-pound gross weight and below

A

11,500-foot pressure altitude

13,500-foot density altitude

56
Q

Maximum operating altitude:

IFR or FCS ON: Above 3,000-pound gross weight

A

8,500-foot pressure altitude

11,000-foot density altitude

57
Q

Climb/Descent Rate of Climb Limit in IMC

A

1,000 ft/min

58
Q

Acceleration Limit

A

Upper: +2.5 G’s
Lower: +0.5 G’s
@maximum gross weight

59
Q

Maximum gross weight internal

60
Q

Maximum gross weight external

61
Q

Rotor Engagement/Disengagement Wind Limits

A

Front 45 to 45 - up to 40 kts max
45 to 45 both sides - up to 25 kts max
Back 45 to 45 - up to 17 kts max

62
Q

Longitudinal Center-of-Gravity Limits

A
  1. Cg limits with FCS OFF are from station 106.0 to 114.2.
  2. Cg limits with FCS ON are from station 106.75 to 112.5.
  3. Cg limits with front doors removed are from station 106.0 to 110.0.
  4. The aft limit varies, depending on gross weight, for all operations.
63
Q

Minimum Crew Requirements

A
  1. The minimum flightcrew consists of one pilot and a qualified observer.
  2. The minimum flightcrew for IFR operations is two pilots, with at least one being an instrument-rated pilot.
  3. The minimum flightcrew for Confined Area Landing and External Cargo operations is one pilot, one
    qualified observer, and an aircrewman.
    No aircrewman required if both pilots are NATOPS qualified in model.
  4. The minimum crew weight is 180 pounds.
64
Q

Minimum Flight Crew Requirements

A

One pilot and a qualified observer

65
Q

Minimum Flight Crew for IFR operations requirements

A

Two pilots, with at least one being an instrument-rated pilot

66
Q

Minimum Flight Crew for Confined Area Landing and External Cargo operations requirements

A

One pilot, one qualified observer, and an aircrewman. No aircrewman required if both pilots are NATOPS qualified in model.

67
Q

Minimum crew weight

68
Q

Required Equipment for IMC Flight

A

Operation in instrument meteorological conditions is prohibited in a TH-57B.
1. Cyclic force trim system.
2. MINISTAB flight control system (pitch and roll).
3. Main generator.
4. Standby generator.
5. Battery protection circuit.
6. Instantaneous vertical speed indicator.
7. Two attitude indicators (one automatically powered by approved standby battery source in the event of
power loss).
8. One operable communication system.
9. One operable navigation system appropriate to the routes to be flown.
10. Radar altimeter.
11. Other equipment as required by the operating rules.

69
Q

Prohibited operations

A
  • The TH-57B is prohibited from operating IMC or in icing conditions.
  • The TH-57C is prohibited from operating in icing conditions.
  • IFR operations are prohibited with any doors removed or with an external load.
  • Asymmetrical doors off flight prohibited.
70
Q

Prohibited maneuvers

A
  1. Aerobatic maneuvers.
  2. Protracted operations in the AVOID and CAUTION areas of the height velocity diagram (Figure 4-6).
  3. Fully developed vortex ring state.
  4. Intentional entry into blade stall.
  5. Hovering turns exceeding a rate of 45° per second.
71
Q

Required Equipment for Night Flight

A
  1. All instrument and circuit breaker panel lights.
  2. All exterior lights.
  3. Operable communication radio.
  4. Attitude gyro.
  5. Radar altimeter.
72
Q

Required Equipment for Overwater and Shipboard Operations

A
  1. Radar altimeter.

2. Vertical Speed Indicator.

Coops Crazy Adventure (14 decks)

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