Limits Flashcards

1
Q

What is defined as engine start?

A

Starter initiation, acceleration of Ng, and starter dropout/disengagement.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the required delay between start attempts after an aborted start?

A

60 seconds, except during emergencies.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is required for crossbleed starts?

A

The receiving engine shall be at or above 24% Ng prior to advancing to IDLE.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Are engine starts with main rotor blades or tail rotor pylon folded allowed?

A

No, they are prohibited.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What should be done if an operational limit is exceeded?

A

An appropriate entry shall be made on a maintenance action form (MAF) stating what limit(s) were exceeded.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What should the crew do if a red ‘XXX’ is displayed due to an exceeded limit?

A

The crew shall land as soon as practicable.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the TGT limit during engine start?

A

851°C until idle speed.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the engine start procedure for temperatures below 16°C OAT?

A

Engaged once - 60 sec disengaged; Engaged twice - 60 sec disengaged; Engaged 3x - 60 sec disengaged; Engaged 4x - 30 minutes disengaged.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the engine start procedure for temperatures between 16-52°C OAT?

A

Engaged once - 60 sec disengaged; Engaged twice - 30 minutes disengaged.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the engine motor procedure with ignition OFF at any temperature?

A

Engaged - 2 mins / Disengaged - 5 mins; Engaged - 2 mins / Disengaged - 30 mins.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Is engine operation with gust lock engaged allowed?

A

No, it is prohibited.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What are the TGT ranges and limits?

A

0 to 810 °C = Continuous / Green; 810 to 851 °C = 30 min / Yellow; 851 to 878 °C = 10 min / Red; 878 to 903 °C = 2.5 min / Red; 903 to 949 °C = 12 sec / Red; 949 °C = MAX / Red.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are the Power Turbine Speed (Np) limits?

A

< 96% = Avoid / Red; 96-105 = Continuous / Green or Yellow above 101%; 105-117 = 20 secs / Yellow; 117-120 = 12 secs / Yellow; 120 = Maximum / Red.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What caution should be noted during engagement of Power Turbine Speed?

A

Extended operations in the 20-40% and 60-75% ranges may cause engine damage.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are the Main Rotor Speed (Nr) limits?

A

Less than 96% = Avoid / Red; 96 to 101% = Continuous / Green; 101 to 120% = Precautionary / Yellow; 120% = Max / RED; Greater than 120% = 123% is FCF MAX / RED; 127% = Overspeed Latch / Red.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are the Dual-Engine Torque (TRQ) limits at <80 KIAS?

A

0 to 120% = Continuous / Green; 120 to 144% = 10 Seconds / Yellow; 144% = Maximum / Red.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What are the Dual-Engine Torque (TRQ) limits at >80 KIAS?

A

0-106% = continuous / green; 106-127% = 10 seconds / yellow; 127% = maximum / red.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What are the Single-engine Torque (TRQ) limits?

A

0-135% = Continuous / Green; 135-144% = 10 secs / Red; 144% = Max / Red.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What are the Gas Generator Speed (Ng) limits?

A

0-102.2% = continuous / green; >102.2-106% = 2.5 minutes / yellow; >106-107% = 12 seconds / red; 107% = maximum / red.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What are the Transmission Temperature (XMSN T) limits?

A

-50 - 105ºC = Continuous / Green; 105 - 120ºC = Precautionary / Yellow; 120ºC = Maximum / Red.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is the minimum Transmission Pressure (XMSN P)?

A

20 PSI = minimum / red.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What are the Transmission Pressure (XMSN P) limits?

A

20-30 PSI = idle and transient / yellow; 30-65 PSI (45-60 PSI in level flight) = continuous / green; 65-130 PSI = precautionary / yellow; 130 PSI = maximum / red.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What is the acceptable fluctuation for Transmission Pressure during steady-state nose-high pitch attitudes? Fix this one

A

Fluctuations acceptable - including momentary dips below 30 psi and below 20 psi for up to 1s.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What does zero oil pressure indicate in rotor engagement?

A

It may indicate no-oil flow and is limited to less than 1 min and requires MAF write-up.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

What are the Engine Oil Temperature (ENG OIL T) limits?

A

-50 - 135ºC = Continuous / Green; 135 - 150ºC = 30 Minutes / Yellow; 150ºC = Maximum / Red.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

What are the Engine Oil Pressure (ENG OIL P) limits?

A

22 psi = Minimum / Red; 22 - 26 psi = Precautionary / Yellow; 26 - 100 psi = Continuous / Green; 100 - 120 psi = Precautionary / Yellow; 120 psi = Maximum / Red.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

What is the minimum fuel requirement?

A

No less than 225 lbs (approximately 20 mins) per main tank.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

What are the AOB limits when <300lbs of fuel per main tank?

A

> 30 degrees balanced flight.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

APU Use

A

Not intended for routine in-flight use. Op of the APU in flight SHALL be limited to essential ops only.

Emergency procedures, Single engine training, Practice autos, Power ECS during extreme temperatures.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

APU Limits - Rotors not engaged

A

Continuous use up to 51 C.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

APU Limits - Rotors engaged

A

Continuous use up to 43 C. 30 mins between 43 and 60 C.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

Transmission Limited by

A

Nr, Q, XMSN Oil P/T. Engine torques over 150% are displayed as red XXX.

33
Q

Rotor Engagement / Disengagement

A

45 KIAS from any direction.

34
Q

Vne

A

180 (or as limited by blade stall).

35
Q

Max Auto

A

100 KIAS.

36
Q

Max Sideward/Rearward Flight

A

45 KIAS (35 w/ external).

37
Q

Max SAS 1 and SAS 2 inop in IMC

A

125 KIAS.

38
Q

Max SAS/Boost Off ( Speed Question)

A

140 KIAS.

39
Q

Max PRI SERVO PRESS caution

A

125 KIAS.

40
Q

Cabin doors opening/closing

A

100 KIAS.

41
Q

Cabin Doors Open

A

120 KIAS.

The soundproofing must be properly secured when flight is conducted with cabin doors opened.

42
Q

Gunner windows opening/closing

A

170 KIAS.

43
Q

Landing light in transition airspeed

A

130 KIAS.

44
Q

Searchlight in transition airspeed

A

100 KIAS.

45
Q

A/C gross wt. > 22,000lbs w/ external load

A

120 KIAS.

46
Q

Cockpit doors removed and cabin doors removed / closed

A

150 KIAS (ball within 1/2).

47
Q

ROD max for rescue hoist loads

A

1000 fpm.

48
Q

Hovering Limits

A
  1. Prolonged rearward flight and downwind hovering should be avoided to prevent accumulation of exhaust fumes in the helicopter and heat damage to the window on an open cabin door.
  2. Hovering turns at a rate in excess of 30° per second.
49
Q

AOB Limits ( Looking for 6 Answers)

A
  1. Normal Ops - 45°
  2. Ops above 10,000 ft DA - 30°
  3. Either Pri Servo Press caution on - 30°
  4. SAS/Boost Off flight - 30°
  5. External Load - 30°
  6. Rescue Hoist Load - 10-20 (0-40 KIAS).
50
Q

Max DA

A

13,000 feet.

51
Q

Prohibited Maneuvers

A
  1. Aerobatic flight
  2. Practice full-autorotation landings
  3. Intentional approaches into or inducement of retreating blade stall.
52
Q

Rotor Brake Limits

A

Max: 76% Nr
Routine: 50-30% Nr
180 psi max limited to extend service life.

53
Q

Max Wind for blade fold and spread

A

45 KIAS any direction.

54
Q

Cooling period post-complete fold and spread before commencing another

A

10 mins.

55
Q

Max Wind for tail pylon/stab fold and spread ops

A

45 KIAS any direction.

56
Q

Max ROD for level terrain

A

540 fpm.

57
Q

Max ROD for sloped terrain

A

360 fpm.

58
Q

Max TO speed with tailwheel locked

A

60 KGS.

59
Q

Max TD and TO speed with tailwheel unlocked

A

20 KGS.

60
Q

Max Braking speed

A

35 KGS.

61
Q

Slope Landing Limits think degrees

A

9 degrees NH / 12 degrees cross-slope / 6 degrees NL.

low-freq oscillation may occur on NL slope landing with cyclic near aft stop.

62
Q

Downwind Landings

A

should be avoided.

63
Q

Max Operating Weight

A

23,500 lbs.

64
Q

Max launch and recovery gross weight for aviation ships and amphib assault

A

23,500 lbs.

65
Q

Max launch and recovery gross weight for air capable ships

A

22,500 lbs.

66
Q

Max total internal (aft cabin)

A

5,500 lbs.

67
Q

Max total weight for palletized cargo

A

4733 lbs.

68
Q

Max weight for single pallet of cargo

A

3,000 lbs.

69
Q

Max external load on cargo hook

A

6,000 lbs.

70
Q

Max external load on rescue hoist

A

600 lbs.

71
Q

Minimum Aircraft Equipment for Night Flight Over Water

A
  1. LAWS
  2. Altitude Hold.
72
Q

Minimum Aircraft Equipment for Flights Into Forecast or Known Icing Conditions

A

If equipped w/ operable anti-ice AND blade de-ice equipment: permitted into forecast or known TRACE or LIGHT icing. All installed equipment must be operational.
If not equipped with operable blade de-ice equipment: prohibited into forecast or known icing conditions.

73
Q

What is required to be considered Icing Conditions (Need to check)

A

OAT of 5C or below in visible moisture.

74
Q

What is prohibited when it comes to Icing

A

Flight into forecasted or known moderate or severe icing conditions is prohibited.

75
Q

Minimum Equipment for Passengers

A

Except in emergency situations, helicopter emergency egress lighting system (ADHEELS and IHEELS) shall be operational for all overwater flights requiring passengers/non-aircrew in the cabin.

Warning: use of gunner belts shall be restricted to occurrences when mission accomplishment requires persons to be out of their seats.

76
Q

OAT Limits

A

< -40C or > 60C (140F) is prohibited.

77
Q

Backup Hyd Pump Limits

A

only apply when rotors static.
33-38C 24min ON 72 min OFF
39-60C 16min ON 48min OFF.

78
Q

When should Pitot heat be turned on?

A

When visible moisture is present and/or the OAT is 5 °C or below.

79
Q

What may happen if Pitot heat is not turned on in icing conditions?

A

Erroneous airspeed indications, which can lead to erratic and/or downward programming of the stabilator and loss of control of the aircraft.