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UH60 > 60 limits > Flashcards

60 limits Flashcards

1
Q

Rotor brake shall not be applied with engine(s) operating and rotor turning except during an

emergency stop. Maximum rotor speed for emergency rotor brake applications is

________%NR.

A

76

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2
Q

Maneuvering limitations with a sling load are limited to a maximum of ____ angle of bank in

forward flight. Side flight is limited by bank angle and is _________.

A

30; decreased as airspeed increases

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3
Q

Rearward flight with a

sling load is limited to ____ knots.

A

35 knots

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4
Q

Above ____ KIAS avoid abrupt, full pedal inputs to prevent excess tail rotor system loading.

A

80

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5
Q

To prevent APU overheating, APU operation at ambient temperature of _________ and

above with engine and rotor operating, is limited to _____ minutes.

A

43C , 30 min

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6
Q

Manual control available. If the automatic stabilator control system fails in flight and

operation cannot be restored:

A

1) The stabilator shall be set full down at speeds below 40 KIAS.

2) The stabilator shall be set at 0 degrees at speeds above 40 KIAS.

3) Autorotation airspeed shall be limited to 120 KIAS at all gross weights.

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7
Q

The following slope limitations apply regardless of gross weight or CG, with or without

ESSS/ERFS.

a. ____ degrees nose-up, right wheel up or left wheel upslope. The slope limitations shall be

further reduced by ____ degrees for every ____ knots of wind.

A

15; 2; 5

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8
Q

Do not exceed a touchdown sink rate of _____ feet-per-minute on level terrain and _____

feet-per-minute on slopes with gross weights of up to 16,825 pounds; above 16,825 pounds

gross weight do not exceed _____ feet-per-minute on level terrain and _____

feet-per-minute on slopes.

A

540; 360; 300; 180

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9
Q

The pneumatic starter is capable of making a number of consecutive start cycles when

exposed to the environmental conditions specified. What are the start cycle, rest period

limitations when the ambient temperature is 30° C?

A

2 starts, 30 minutes.

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10
Q

Maximum forward touchdown speed is limited to ____ knots ground speed on level terrain.

A

60

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11
Q

These types

of oil pressure fluctuations are acceptable, even when oil pressure drops into the yellow

range (below _____ psi). Oil pressure should remain steady and should be in the ______ psi

range to ensure that when fluctuations occur, they remain in the acceptable range as defined

A

30; 45-60

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12
Q

Maximum airspeed for one engine inoperative is _____ KIAS.

A

130

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13
Q

What are the aircraft weight limitations?

A

UH-60M: 22,000 lbs

UH-60M external lift mission: 23,500 lbs

ESSS/ERFS helicopter on ferry mission (Airworthiness release required): 24,500 lbs

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14
Q

Regarding torque, what is the 10-second transient for single engine?

A

135-144%

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15
Q

BACKUP HYDRAULIC PUMP HOT WEATHER LIMITATIONS.

Match the temperatures below with the operating time limit for each.

A

FAT oC

-54o-32o C. Unlimited

FAT oC

33o-38o B. 24 Minutes

FAT oC

39o-52o A. 16 Minutes

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16
Q

Bank angles shall be limited to ____ degrees when a PRI SERVO FAIL caution appears.

A

30

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17
Q

Manual operation of the stabilator in flight is _____ except as required by _______ and

________ requirements or as alternate stabilator control in case the AUTO mode

malfunctions.

A

prohibited; formal training, maintenance test flight

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18
Q

The main gearbox may be operated up to ____ minutes at a time with pressure

fluctuations when the helicopter is known to be at a _______ attitude (i.e., slope landings or

hover with extreme aft CG).

A

30; nose-up

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19
Q

Regarding torque, what is the 10-second transient for dual engine, below 80 KIAS?

A

120-144%

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20
Q

Sideward/rearward flight/hovering limits

A

45; 35; 45; 35

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21
Q

Helicopters with the following equipment installed, operational, and turned on are permitted

to fly into trace or light icing conditions.

A
  1. Windshield Anti-ice
  2. Engine Anti-ice
  3. Engine Inlet Anti-ice modulating valve
  4. Pitot Heat
  5. Insulated Ambient Air Sensing Tube

WEEPI

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22
Q

Regarding torque, what is the continuous limit for dual engine, above 80 KIS?

A

0-100%

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23
Q

Cabin doors may be fully open up to ____ KIAS.

A

145

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24
Q

BACKUP HYDRAULIC PUMP HOT WEATHER LIMITATIONS.

Match the temperatures below with the cool down period for each.

A

-54 to 32 - N/A

33 to 38 - 72 minutes

39 to 52 - 48 minutes

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25
Q

Maximum rotor brake pressure for engine start is ________ psi.

A

690

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26
Q

Windshield anti-ice check shall not be done when FAT is over _____.

A

27 degrees C (80 degrees F)

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27
Q

Regarding the NOTE for NP limitations, avoid operations in the _______ and _______ range

except during start and shutdown.

A

20-40; 60-90

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28
Q

On the EICAS or PFD Power Pod:

Green tapes and readouts indicate

the_____________________________________________________.

A

normal operating range of the parameter the instrument represents.

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29
Q

Rearward ground taxi is ______.

A

prohibited

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30
Q

b. ____ nose downslope. Landing in downslope conditions with tail winds greater than ____

knots shall not be conducted. A low-frequency oscillation may occur when landing

nose-down on a slope with the cyclic near the aft stop.

A

6, 15

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31
Q

Regarding Transmission Oil Temperature limitations, what are the continuous and

precautionary ranges?

A

Continuous: -20-105; Precautionary: 105-140

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32
Q

The pneumatic starter is capable of making a number of consecutive start cycles when

exposed to the environmental conditions specified. What are the start cycle, rest period

limitations when the ambient temperature is 10° C?

A

2 starts, 3 minutes, 2 starts, 30 minutes.

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33
Q

Simultaneous moving of both ENG POWER CONT levers to __________ (throttle chop) in

flight is prohibited.

A

IDLE or OFF

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34
Q

Cabin doors may be fully open up to ____ KIAS.

A

145

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35
Q

Searchlight airspeed limits. If use is required, the searchlight must be extended prior to

reaching a maximum forward airspeed of ____ KIAS. With the searchlight extended,

airspeed is limited to ____ KIAS.

A

100; 180

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36
Q

On the EICAS or PFD Power Pod:

Red and Yellow striped tapes and red readouts indicate the limit ___________________.

A

Above or below which continued operation is likely to cause damage or shorten

component life.

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37
Q

Minimum rotor brake pressure for engine start is ________ psi.

A

450

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38
Q

Regarding torque, what is the continuous limit for single engine?

A

0-135%

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39
Q

Operating an engine against the gust lock is ______.

A

prohibited

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40
Q

The maximum weight that may be suspended from the cargo hook is _____ pounds. The

external load limit of the airframe will not be exceeded when using the cargo hook.

A

9,000

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41
Q

Regarding Transmission Oil Pressure limitations, what are the correct limitations for each

condition?

A

Idle and Transient: 20-30; Continuous: 30-65; Precautionary:

65-130

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42
Q

The __#__ cabin ceiling tiedown fittings have a limited load capability of _____ pounds.

A

4,000;

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43
Q

The ___#___ net restraint rings in the cargo compartment are rated at ______ pounds capacity

in any direction.

A

3500

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44
Q

The __#___

tiedown fittings installed on the cargo for can restrain a _____ pound load in any direction.

A

5000

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45
Q

Flight with cockpit door(s) removed is ______.

A

prohibited

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46
Q

If main transmission oil pressure is not steady during steady state forward flight or in a level

hover, or if oil pressure is steady but under ______ psi, make an entry on the appropriate

maintenance form.

A

45

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47
Q

Use of the rotor brake with engine(s) operating is restricted to __________ and __________

engine starts and operations at IDLE only.

A

single, dual

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48
Q

egarding engine torque, what is the 10-second transient for dual engine, above 80 KIAS?

A

100-144%

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49
Q

Any time an operational limit is exceeded, an appropriate entry shall be made on ________.

Entry shall state what limit or limits were ______, ______, ______, and any additional data

that would aid maintenance personnel in the maintenance action that may be required. The

helicopter shall not be ______ until corrective action is taken.

A

DA Form 2408-13-1; exceeded, range, time beyond limits; flown

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50
Q

The minimum crew required to fly the helicopter is ____ pilots.

A

2

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51
Q

MAIN TRANSMISSION MODULE LIMITATIONS

Sudden pressure drop (more than ______ psi) without fluctuation requires an entry on the

appropriate maintenance form.

A

10

52
Q

With engine and rotor not operating, the APU may be operated continuously up to an

ambient temperature of ___°C.

A

51

53
Q

Maximum wind velocity for rotor start or stop is ______ from any direction.

A

45

54
Q

Hovering turns greater than _____ degrees per second are prohibited. Intentional

maneuvers beyond attitudes of _____ pitch or over _____ roll are prohibited.

A

30; +/-30; 60

55
Q

NP1 or NP2 operation in yellow range (101% to 105%) is

A

not recommended as good operating practice.

56
Q

Power off (autorotation) rotor speeds up to _______ are authorized for use by maintenance

test flight pilots during autorotational RPM checks.

A

120% NR

57
Q

Prolonged rearward flight and downwind hovering are to be avoided to prevent __________

in the helicopter and __________ to windows on open cargo doors.

A

accumulation of exhaust fumes; heat damage

58
Q

Routine stops will be with engine(s) off, NR below _____, and with _______ psi applied to

stop the rotor in not less than ______.

A

40%; 150-180; 12 seconds

59
Q

Maximum airspeed for autorotation at a gross weight of 16,825 or more is ______ KIAS.

A

130

60
Q

Regarding stowage provisions, maximum capacity for each storage compartment is _____

pounds.

A

125

61
Q

Regarding weight limitations, maximum weight is further limited by cargo floor maximum

capacity of ______ pounds per square foot.

A

300

62
Q

Landing light airspeed limits. If use is required, the landing light must be extended prior to

reaching a maximum forward airspeed of _____ KIAS. With the landing light extended,

airspeed is limited to _____ KIAS.

A

130, 180

63
Q

NP1/2 limits (4)

A

Transient - 91 to 95%

Continuous - 95 to 101%

Transient - 101 to 105%

12 second transient - 105 to 107%

64
Q

Power on NR limits (3)

A

Transient - 91 to 95%

Continuous - 95 to 101%

Transient - 101 to 107%

65
Q

Power off NR limits (auto) (3)

A

Normal - 90 to 105%

Transient - 105 to 110%

Maximum - 110%

66
Q

NG limits (2)

A

Continuous - 0 to 105%

12 second transient - 105 to 106%

67
Q

Q limits Dual engine

A

Continuous at/below 80 KT - 0 to 120%

Continuous above 80 KT - 0 to 100%

10 sec transient at/below 80 KT - 120 to 144%

10 sec transient above 80 KT - 100 to 144%

68
Q

Q limits single engine

A

Continuous - 0 to 135%

10 second transient - 135 to 144%

69
Q

TGT limits (all degrees C)

A

Normal - 0 to 793

30 min limit - 793 to 846

10 min limit - 846 to 879

2.5 min transient - 879 to 903

12 second transient - 903 to 949

Abort start limit - 851

70
Q

Engine temperature limits

A

Continuous : -20 to 135

30 min limit : 135 to 150

71
Q

Engine pressure limits

A

Idle - 22 to 26 PSI

Normal - 26 to 100 PSI

5 Min limit - 100 to 120 PSI

72
Q

Transmission oil temperature limits

A

Continuous : -20 to 105

Precautionary : 105 to 140

73
Q

Transmission oil pressure limits

A

Idle/transient - 20 to 30 PSI

Continuous - 30 to 65 PSI

Precautionary - 65 to 130 PSI

74
Q

Fuel limit ranges

A

Precautionary - 0 to 200lb each tank

Normal - above 200lbs each tank

75
Q

Engine starter limits

A

15 degrees and below - 2 start cycles, 3 min rest, 2 start cycles, 30 min rest

Above 15 degrees - 2 start cycles, 30 min rest

76
Q

Weight limits

A

60M - 22,000lb

60M external lift mission - 23,500 (only with cargo hook load above 8,000lb)

60M ESSS, ferry mission, AWR - 24,500

77
Q

Cargo floor max capacity per SQ foot

A

300lb

78
Q

Airspeed limits - Cargo hook up to 8,000lb

A

140

79
Q

Airspeed limits - external lift above 22,000lb

A

120

80
Q

Max airspeed above ________lbs for autorotation is ______________

A

Above 16,825

130KIAS

81
Q

Max airspeed at or under ________lbs for autorotation is ______________

A

16,825

150 KIAS

82
Q

SAS or HYD inop airspeed limits

A

1 system INOP - 170

2 system INOP - 150

2 system INOP IMC- 140

83
Q

Hovering turn max rate

A

30 degrees per second

84
Q

Pitch and roll limits

A

30 degrees pitch, 60 degrees roll

85
Q

Sling load limits

A

30 degrees of bank

Max 35 knot rearward flight

86
Q

30 degrees nose down, big dick accelleration on takeoff, or diving manuevers can result in what (Warning)

A

The FCC commanding a stabilator Auto mode failure

87
Q

Pneumatic inlet limits

A

Min : 40 PSGI, 30PPM, 300 degrees F

Max 50 PSGI, 480 degrees F

88
Q

Engine starts at _______________ pressure altitude can result in ________

A

Starts above 18,000’ PA can result in hot start

89
Q

Parameters for a crossbleed start

A

Rotor 100%

NG 90%

ENG 1/2 Anti-Ice ON advisory may NOT be on

90
Q

When do we use fuel boost pumps, not in an EP

A

With JP4 when:

Above 5000ft PA

When XFEED at any altitude

91
Q

max airspeed skis installed

A

155

92
Q

Max airspeed gunner doors open

A

170

93
Q

Max airspeed to open or close cabin doors

A

“Below 80 KIAS”

94
Q

Where does VNE read in STAB MAN mode

A

150

95
Q

Prohibited maneuvers

A

Turns 30/s, Pitch 30, Roll 60

Reward ground Taxi

Throttle chop

96
Q

Restricted Maneuvers

A

-Manual ops of stab (exception training, maintenance)

-Downwind hovering

97
Q

Nose upslope with skis, at what weight may parking brake not hold AC in position

A

16000

98
Q

slope limits

Nose up, left ski high, right ski high

A

10 degrees

99
Q

Ice rate meter calibrated for what speed?

A

100 knots

If faster, may read greater icing rate

100
Q

Flight into moderate icing requires what in addition to WEEPI

A

Blade de ice

101
Q

Blue force tracker limits (got you!)

A

26 to 71 degrees C

102
Q

water buckets shall not be used when what is installed

A

skis

103
Q

Red/yellow tapes and red readouts indicate

A

limit above or below where operation may cause damage or shorten life

104
Q

Yellow tapes and readouts indicate

A

Special attention should be given to the parameter

105
Q

Green tapes and readouts indicatie

A

normal operating range

106
Q

Demand for max power with different ETFs engines will do what

A

Normal to have Q split when lower ETF engine hits TGT limiting

the high power engine may exceed dual engine Q limit

107
Q

Write ups

A

2408-13-1.

What limits exceeded

Range

Time beyond limits

108
Q

Restarting helicopter after using JP4

A

If within 2 hours of shutdown and spinning up

Run NR 100% for 2 minutes to purge hot fuel from nacelle area

109
Q

engine overspeed in flight

A

prohibited, only for checks on the ground by authorized personnel

110
Q

Airspeed limit external hoist up to 8000

A

140

111
Q

Airspeed limit hoist above 8000 and gross weight above 22000

A

120

112
Q

Transmission and nose up slope - whats normal

A

10 degree slope - 30-35 PSI

15 degree slope - 10 - 15 PSI

113
Q

Avoid what during engine anti ice ops

A

Extreme lower power requirements (less than 10 Q)

Rate of descent > 1900fpm

Ground bleed air heater operation below 100% NR

Turn off cabin heat before high rate of descent

114
Q

Flight into ANY turbulence prohibited if

A

sling load attached, INOP collective trim

115
Q

How to fill CEFS tanks

A

3 inches below filler port, room for expansion

116
Q

In what conditions is it normal to see transmission oil pressure fluctuations?

A

-When flying with pitch attitudes above +6 degrees

-During transient maneuvers (IE hovering in gusty conditions)

Having T oil P in 45-60 ensures that even with fluctuations, oil P stays in an acceptable range

117
Q

During an auto with the rotor fully decoupled, what is it normal to see for NP1 and NP2

A

It is normal to see a speed split between NP1 and NP2 up to 107% for an engine referenced to 100%

118
Q

Momentary checks of NPs over ___% are authorized when?

A

Over 107% NP is authorized by MTPs during autorotational RPM checks

119
Q

After flying with JP4 and going back to JP5/8, what must be done?

A

3 more flights with fuel boost pumps on

120
Q

Max airspeed for auto with volcano isntalled

A

100KIAS

121
Q

Max Rate of descent with Rescue Hoist Load

A

1000 fpm

122
Q

Maneuvering flight which results in __________________ is prohibited

A

which results in severe blade stall and significant increase in 4-per-rev vibration

123
Q

Slope limits with FLIR installed

A

6 degrees nose up

15 degrees left and right

reduce by 2 degrees every 5 knots

124
Q

Helicopters with blade erosion kit tape are prohibited from doing what

A

flying into icing conditions - sounds like any severity is prohibited

125
Q

Only acceptable CEFS configurations

A

All 4

2 tanks - 1 on each outboard

2 tanks - 1 on each inboard

126
Q

Fuel tank jettison envelope

A

Level flight:
0-120 knots - no more than 1 ball out of trim

120+ - Must be fully in trim

Descending:
Below 80 knots jettison not recommended

80 knots - 1000FPM descent max

90 knots - 875FPM descent max

100 knots - 750FPM descent max

110 knots - 625FPM descent max

120 knots - 500FPM descent max

Above 120 not recommended

Subtract 125FPM for every 10 knots

UH60 (29 decks)

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