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UH 72 > UH72 Limits > Flashcards

UH72 Limits Flashcards

1
Q

Maximum approved gross mass for flight ?

A

7905 lbs / 3585 kg

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2
Q

Vne for OEI operation
(under all conditions)

A

110 KIAS

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3
Q

Vne for steady autorotation
(under all conditions)

A

90 KIAS

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4
Q

Min. airspeed for autorotations

A

60 KIAS

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5
Q

Target airspeed for practice autorotatons

A

75 KIAS

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6
Q

Maximum ground sloping to the left ?

A

11*

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7
Q

Maximum ground sloping to the right ?

A

6*

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8
Q

Maximum ground sloping up ?

A

8*

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9
Q

Maximum ground sloping down ?

A

8*

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10
Q

Name the prohibited maneuvers

A
  • Aerobatics
  • Intentional full autorotation landings
  • Flight into icing conditions
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11
Q

The rotor brake shall not be applied until ….?

A

Both engines are shut down and rotor RPM has dropped below 50%

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12
Q

At which % does the ROTOR RPM warning show:

1) Light steady + low-pitch beeping tone

2) Light flashing + warning gong

3) Light flashing + high pitch constant tone

A

1) 95%

2) 106%

3) 110%

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13
Q

Maximum forward airspeed with hinged doors in open spoiler position and sliding doors closed

A

100 KIAS or Vne

Whichever is less

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14
Q

Minimum height for hands-off and feet-off operation during T/O and approach

( ft AGL - Autopilot )

A

200 ft AGL

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15
Q

Minimum height for hands-off and feet-off operation in cases other than T/O and approach

( ft AGL )
( Autopilot )

A

500 ft AGL

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16
Q

What color is the warning light and what does it indicate ?

A

Red

A hazard which may require immediate corrective action

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17
Q

What color is the caution light and what does it indicate ?

A

Yellow

The possible need for future corrective action

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18
Q

Specify minimum ENG oil pressure ?

start of red range

A

1.3 bar

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19
Q

Specify caution range - ENG oil pressure ?

A

1.3 - 1.5 bar

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20
Q

Specify range for “continuous operation” - ENG oil pressure

normal range

A

1.5 bar - 5.0 bar

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21
Q

Specify maximum continuous ENG oil pressure

A

5.0 bar

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22
Q

When can you exceed 5.0 bar ENG oil pressure ?

A

Transient operation during start cycle and warm up at ground idle only

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23
Q

Specify minimum main transmission oil pressure

A

1.0 bar

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24
Q

Specify caution range - Main transmission oil pressure

A

1.0 - 1.5 bar

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25
Q

Specify range for “continuous operation” - Main transmission oil pressure

A

1.5 - 5.0 bar

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26
Q

Specify maximum main transmission oil pressure

A

5.0 bar

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27
Q

Specify range for “continuous operation” main transmission oil temperature

celcius

A

-10 to 105 ºC

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28
Q

Specify maximum main transmission oil temperature

celcius

A

105 ºC

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29
Q

Why does the ENG starter have time limits ?

A

To prevent overheating damage of the starter

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30
Q

Specify a starter energize time limit + time between cycles

onboard battery

A

30 sec ON
60 sec OFF
30 sec ON
60 sec OFF
30 sec ON

30 minutes OFF

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31
Q

Specify a starter energize time limit + time between cycles

External power

A

20 sec ON
60 sec OFF
20 sec ON
60 sec OFF
20 sec ON

30 minutes OFF

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32
Q

Define: Between which two stages does the “starter energize time” elapse ?

A

Initiation of the starter to the ignition in the turbine ( !! New !! Ignition is now 320 degrees TOT )

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33
Q

Specify maximum continuous load per generator

A

200 A

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34
Q

Total maximum continuous load ( power supply through both generators )

A

360 A

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35
Q

Minimum approved gross weight for flight

A

1750 Kg (3859 lbs)

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36
Q

Maximum approved gross weight for flight

A

3585 Kg (7905 lbs)

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37
Q

Specify max allowed floor loading

A

600 kg / m2

(123 lbs / sq. ft. )

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38
Q

Specify tie-down ring limits

Load pr. tie-down ring

A

70 kg

(154 lbs)

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39
Q

Specify airspeed limits for

Yellow arc
Green arc
red radial
Red cross-hatched radial

A

Yellow: 0 - 30 kt
Green: 30 - 150 kt
Red radial: 150 kt
Red cross-hatched radial: 90 kt

The red cross-hatched radial is Vne for power off - Autorotation

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40
Q

Specify Maximum airspeed for rearward flight

with hinged doors in open spoiler position and sliding doors closed, open or removed

A

15 Kts

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41
Q

Specify maximum crosswind speed for flights
with open, half open or removed doors

A

30 Kts

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42
Q

What is the minimum airspeed during opening or closing of the forward hinge door ? (Maximum?🤔)

A

30 KIAS

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43
Q

Specify the rule in regard to the helicopter doors, when flying IMC

A

It is prohibited to fly IMC with opened/removed doors

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44
Q

Specify minimum airspeed with IAS mode engaged

AFCS - Automatic flight control system

A

30 kts

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45
Q

AFCS NOTE

At what airspeed - in ALT mode - shall the airspeed indicator be monitored more closely ?

ALT mode : altitude capture mode

A

80 Kts

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46
Q

Specify maximum operating altitude

A

18.000 ft

DA ?

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47
Q

Minimum air temperature
-With cold weather kid
-Without cold weater kid

A

With: -45º C
Without: -30º C

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48
Q

Maximum air temperature

A

50º C

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49
Q

What is maximum operating time on ground if OAT > +35º C

A

30 min

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50
Q

What is maximum windspeed for starting and stopping rotor ?

A

50 kts

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51
Q

Hover IGE

What is maximum windspeed for IGE hover ( to ensure controllability )
ALT < 7000 ft
ALT > 7000 ft

A

ALT < 7000 ft = 30 kts
ALT > 7000 ft = 17 kts

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52
Q

When is Nro considered low / high ?

A

Low = 95%
High = 106% +

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53
Q

When will the “master caution” illuminate ?

What is the procedure ?

A

With every caution on the CAD

Procedure:
- Check and do procedures
- Reset

54
Q

What is the max remaining operating time with “AVION OVHT” caution illuminated ?

A

30 min

55
Q

If “AVION OVHT” caution comes on what is airspeed procedure ?

A

As fast as possible to inhance cooling

56
Q

When should you abort start ?

A
  • No ignition within 15 seconds
  • TOT raises above limits
  • No positive engine or transmission oil pressure indications upon reaching ground idle conditions (M)
  • N2 RPM and rotor RPM needles aren’t matched after reaching stabilized ground idle conditions (M)
TOT ->  (If start is aborted but TOT wasn't exceeded, wait 15 sec after N1 RPM has returned to zero before re-starting)

M = Requires maintenance action

Ground idle = 70% +/- 2%
57
Q

Specify airspeed VNE for:

GW > 3000kg/6615lbs
GW < 3000 kg/6615 lbs

A

GW = +3000 kg / 6615 lbs
145 kts

GW = -3000 kg / 6615 lbs
150 kts

58
Q

Specify airspeed limit when:

A/C nose changes from left to right ?

And why does this limit excist ?

A

40 Kts

Tail rotor malfunction

59
Q

Specify airspeed limit:
OEI fly away

A

45 kts

60
Q

Above which airspeed should the pilot avoid steep turns ?

A

45 kts (close to Ground? + right turns only?))

61
Q

Name the N2 engine limits
Continuous range
Minimum
Maximum
Overspeed Transient + time
Underspeed transiet + time

A

Continuous range (green arc)
96-104 %
Minimum / Maximum (red lines)
96/104 %
Overspeed Transient (red dot)
106 % + 12 sec (ENG TQ > 2x30%) / 5 min (ENG TQ < 2x30%)
Underspeed transiet
85 % + 20 sec

62
Q

On the triple tach: what does the inner & outer scale show ?

A

Inner: Rotor RPM limits
Outer: N2 ENG RPM limits

63
Q

What’s the “rotor RPM limits” for power on

A

Same as for N2 limits

64
Q

What’s the “rotor RPM limits” for power off

A

80 -104 % (GM ≤ 2000 kg / 4410 lbs ) continuos
85 - 104 % (GM > 2000 kg / 4410 lbs ) continuos
104 % Maximum continuous (red line)
106 % 5 min if both TQ below 30%
110 % transient 12 sec (red dot)

65
Q

What does Nro warning light + audio refer to ?

A

Triple tach - Rotor RPM

not N2 Engine RPM

66
Q

What’s the emergency procedure for “ROTOR RPM” warning light ?

A
  1. Rotor RPM indicator - Check
  2. Collective lever - Adjust as necessary to maintaion Nro within normal range
67
Q

What is N2 over-speed caution ?

A

When N2 reaches 123.1% automatic engine shutdown may occur (engine overspeed trip)

68
Q

Can we fly with bleed air heating defective ?

A

Yes but minimum OAT must be +10 degrees celcius

69
Q

Aircraft minimum (w/wo equipment) and maximum temperature

A

min: w: -45º wo: -30º
Max: ISA + 35º

70
Q

Can we use OEI power ratings in training ?

A

No - only MCP

71
Q

Why can N1 speed limits change ?

A

Because they are a function of PA + OAT

72
Q

How is the engine protected against a continuous N1 overspeed / over TOT ?

A

Limiting device in the fuel system

it’s set above the 2.5 min power limits at approx. 104.4% N1

*TOT is not protected during engine start*

73
Q

Red warning light
1. Indication in cockpit ?
2. Audio signal ?
3. Requires ?

A
  1. Indicated in warning panel
  2. With gong or dedicated audio signal
  3. Immediate corrective action
74
Q

Caution
1. Indication in cockpit ?
2. Audio signal ?
3. Requires ?

A
  1. CAD + 2 Flashing master cautions
  2. No audio signals
  3. Do not require immediate action, but possible future action
75
Q

When does the circular MM gauge appear ?

A

Nr > 70%

76
Q

What happens when MM is higher than 77% ?

A

MM exceed caution come on and will not disappear until power off

77
Q

Hover turns, maximum degrees/second
GM> 3200 kg / 7055 lbs
GM< 3200 kg / 7055 lbs

A

GM > 3200 = 30º/s
GM < 3200 = 45º/s

78
Q

ENG oil temperature limits
1. Minimum PWR application
2. Maximum operating

A
  1. -10º
  2. 115º
79
Q

When can you exceed 5.0 bar oil pressure ?

A

Transient operation durting start cycle and warm up at ground idle only

80
Q

When is it acceptable for XMSN OIL PRESS to be illuminated ?

A

Range: 1-1.4 bar
during pressure build up phase

81
Q

MAX TQ AEO

A

71-88% (5 min)
88-97% (12 sec)

82
Q

How often does the warning gong sound when activated ?

A

Every 3 seconds

83
Q

What rotor speed is maintained by VARTOMS ?

A

Vartoms automatically control rotor speed:
1. Airspeed < 55 kts RPM will be controlled between 101-103.5%
2. Airspeed > 55 kts RPM will be controlled between 96.5-102%

84
Q

When will VARTOMS return to NORM mode if in MAN mode ?

A

When TQ split is < 15%

85
Q

What causes VARTOMS to go to MAN mode

A
  1. Engine failure
  2. Torque split > 15 %
86
Q

When will “ENG SPLIT” caution illuminate on CAD ?

A

If N1 indicators shows a difference of 10%

87
Q

MM limits
normal range
caution range
maximum
transient

A

normal range Less than 50%
caution range 50 - 64 %
maximum 64 %
transient 64-77% 25 sec -> 77-90% 7 sec (accumulative log book times)

88
Q

MM
When will yellow circle expand and white circle appear ?

A

Yellow expand: above 50%
White appear: above 64%

89
Q

MM
When will “Limit” & “Exceed” light appear ?

A

Limit: above 64 %
Exceed: above 77%

90
Q

Wind limitation for hovering DA<7000’ and why ?

A

30 kts hover IGE - for controllability

91
Q

Doors open hover - MAX x-wind speed ?

A

30 kts

92
Q

What are a/s limits for high power setting

A

AEO max 65 kts for pwr > 8.5 FLI
OEI max 65 kts for pwr > 12 FLI

93
Q

GOV over/underspeed ETL shall be entered no lower than ____

A

100 ft

94
Q

Autorotation
(Not EP But talk through)

A

Reduce collective to maintain Nro (101)
Airspeed 75 kts
200 (300 Rucker ) ft = steady State factors
100 ft = flare attitude 15-20 degrees
8-12 ft = flare reduce to 7 degrees
Cushion
BAT MSTR OFF

95
Q

Can we reset CB ?

A

In flight not unless doing so is consistent with explicit procedures - Never reset twice

96
Q

“OEI flight conditions - Establish”
Affected ENG tends to zero (no pwr)

A
  1. Maintain engine within safe OEI limits - 12 FLI or below
  2. Maintain a/c within safe OEI limits - Airspeed below 110 kts (65 kts if FLI>12)
    NOTE: if climbing is necessary Vy 65 / Vx 45
97
Q

“OEI flight conditions - Establish”
Affected ENG still delivers pwr

A

Establish steady flight, does situation allow for OEI ? = affected eng to idle and keep normal in OEI limits (max 12 FLI)

  1. ENG pwr sufficient for OEI flight = Continue procedure, Land as soon as practicable
  2. ENG pwr not sufficient for OEI flight = Land ASAP
NOTE: If necessary escape danger with both engines 
**OEI flight rule of thumb: Sum of individual TQ is lower than OEI limits**
98
Q

FADEC-F (RAASH)

A

Fly aircraft
(Rotor, Attitude, altitude, speed, heading)
Alert crew
Diagnose problem
Execute procedure
Communicate externally
Fly the aircraft

99
Q

What voltage on the VEMD would require EPU for starting ?

A

Below 23.5 Volt

100
Q

How are messages displayed on the CAD

A

Left side = Left power plant
Right side = Right power plant
Middle = miscellaneous + Non redundant systems

101
Q

VARTOMS will automatically become active when both engines reach ____ ?

A

> 20 % TQ

102
Q

When should rotor RPM light go off when starting ?

A

Needle passes through 95%

103
Q

When will eng fail ltg and gong come on ?

A

N1 speed below 50 %

104
Q

Shutdown

When turning twist grips off N1 should travel from 30% - 0% in ____ - ____ seconds

A

Min 30 seconds - 40 seconds

105
Q

If OAT is above 35ºC - What should you be aware of / do as the pilot ?

A
  1. Remove oil cooler block plate
  2. Lower cockpit temp by ventilation
  3. Max time on ground 30 min
106
Q

What limit uses 2000kg GW as divider ?

A

PWR off Nro limits

107
Q

What limit(s) uses 3000kg GW as divider ?

A

Airspeed - Vne
Lateral Center of gravity

108
Q

What limit uses 7000’ DA as divider ?

A

IGE hover crosswind limit

109
Q

ENG oil temp : Minimum for starting + minimum for power application

A

minimum starting: -45ºC
maximum PWR application: -10ºC

110
Q

What’s minimum battery capacity ?

A

27 Ah

111
Q

FUEL
Total usable & unusable

A

1530 lbs usable
20.7 lbs unusable

112
Q

FUEL
Main tank usable & unusable

A

1308 lbs usable
7.5 lbs unusable

113
Q

How much usable fuel does each supplytank have ?
Left/right

A

Left: 104 lbs
Right: 118 lbs

114
Q

How much hydraulic fluid does system 1/2 hold ?

A

System 1 : 1 liter
System 2 : 1.2 liter

115
Q

Why is the right sloping 6º ?

A

Because the system already is riged to compensate for translating tendency. When hovering with cyclic displaced to the left (right hover slope) the rotors are already tilted left and now becomes even more tilted

Left crosswind decreases the 6º even further

116
Q

What does the prohibited maneuver “Aerobatic” refer to ?

Pitch and roll angle

A

No pitch angles higher than 30º
No roll angles higher than 60º

117
Q

Hovering turns limitations

A

< 3200kg MAX 45º/sec
> 3200kg MAX 30º/sec

118
Q

What limit uses 3200kg GW as divider ?

A

Hovering turns

119
Q

When should the PPC be updated ?

A

Increase 5ºC + 500’ PA + 200 lbs

120
Q

How much TQ can acceptably be displayed on the FLI even though engines has stopped ?

A

3 % TQ

Due to TQ callibrations

121
Q

How does vartoms maintain Nro (when in norm mode)

A

> 55 kts = 96.5 - 102
< 55 kts = 101-103.5

122
Q

What two things does VARTOMS provide ?

A
  1. Adjust rotor speed to optimum range
  2. Perform TQ matching of both engines
123
Q

When will low fuel illuminate ?

A

tank level below 24 kg / 53 lbs

124
Q

What are airspeed limitations for high power setting ?

A

65 KIAS
AEO: +8.5 FLI
OEI: +12 FLI

125
Q

OEI max airspeeds

PLURAL

A

110 kts
65 kts if TQ>12 FLI

126
Q

What is DC system / Generator - normal operation indications ?

A

DC 28.5 ± 0.3 volt
Generator 0-200 Amps

127
Q

If MM ≤ ____ % the white dot is in the center position

A

10%

128
Q

MM

The outer white ring is displayed when ?

A

The white dot reaches the red circle (64%MM)

129
Q

MM

The white line from the center to the dot is displayed when?

A

The white dot is in the yellow range (50%mm) or above

130
Q

MM

When will the gong (audiotone) apear ?

A

When MM reaches 64%

“LIMIT” will be displayed

131
Q

Which limit uses 3600 DA as a divider ?

A

Rotorspeed
> eller = 3600 DA = 101 Nro
< 3600 DA. = 101.7 Nro

UH 72 (42 decks)

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