Limits Flashcards

1
Q

Engines are limited by what 5 things?

A

Ng

Np

TGT

Oil px

Oil temp

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2
Q

Starter cycle is defined by?

A

Initiation

Acceleration

Dropout

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3
Q

TGT MRP EDECUs

A

0-810, continuous, green

810-851, 30 min, yellow

851-878, 10 min for max pwr/limiter checks, red

878-903, 2.5 min, red

903-949, 12 seconds, red

949, max, red

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4
Q

Np

A

<96%, avoid, red

96% - 105%, continuous, green (yellow above 101%)

105% - 117%, 20 sec, yellow

117% - 120%, 12 sec, yellow

120% max, red

Avoid 20-40% and 60-75%

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5
Q

Nr

A

<96%, avoid, red

96-101%, continuous, green

101-120%, precautionary, yellow

120, max, red

123% max for FCF auto

127% overspeed latch

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6
Q

Dual engine TQ <80kias

A

0-120%, continuous, green

120-144%, 10 seconds, yellow

144%, max, red

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7
Q

Dual engine TQ > 80kias

+ note

A

0-106%, continuous, green

106-127%, 10 seconds, yellow

127%, max, red

Dual engine TQ limits apply when both engines are above 65%

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8
Q

Single Eng TQ

A

0-135%, continuous, green

135%-144%, 10 seconds, red

144%, max, red

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9
Q

Ng (sys config 15)

A

0-102.2%, continuous, green (yellow 98-102/ red above 102%)

102.2%-106%, 2.5 minutes, red

106-107%, 12 seconds, red

Max 107%

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10
Q

Transmission temp

A

-50-105 C, continuous, green

105-120 C, precautionary, yellow

120 C max red

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11
Q

Transmission Px

A

20 psi, minimum, red

20-30 psi, idle & transient, yellow

30-65 psi (45-60 psi in lvl flight), continuous, green

65-130 psi, precautionary, yellow

130 psi max

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12
Q

Engine Oil Temp

A

-50 to 135 C, continuous, green

135 to 150 C, 30 min, yellow

150 C max

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13
Q

Engine Oil Px

1 note

A

22 psi, minimum, red

22-26 psi, precautionary, yellow

26-100 psi, continuous, green

100-120 psi, precautionary, yellow

120 max

Idle range is 22-55 psi

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14
Q

Eng Starter Limits
<16 C
16-52 C

Engine Motor (ignition OFF)

A

<16 C
First 3 cycles -60 seconds
4th cycle- 30 minutes

16-52 C
1 cycle- 60 seconds
2nd cycle- 30 minutes

Motoring
2 min ON- 5 min OFF
2 min ON- 30 min OFF
(Times are cumulative within 5 minutes)

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15
Q

Acceptable APU use includes:

A

EP’s,

Single engine training

Practice autos

Powering ECS during extreme conditions

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16
Q

ENGINE TQs over 150% are displayed as

A

Red XXX

17
Q

Airspeeds:

A
Vne -180 kias
Sideward/rearward- 35 knots
Autorotation- 100 kias
Boost off- 140 kias
2 SAS in IMC- 125 kias
PRI SERVO PRESS- 125
Search light other than stowed- 160 kias
Search light transition- 100 kias
Cabin door opening or closing- 60 kias
Dome at or above trail (cable extended 10 ft, dome approx 6 ft below a/c) - 70 kias, 45*
Dome below trail - 70 kias, 15*
18
Q

AOB limits

A

Above 10000 ft DA -30

Either PRI Servo light- 30

Boost off flight- 30

19
Q

Rotor brake limits?

A

Max 76%

30-50% for regular stops

180 psi

20
Q

Max touchdown speed

A

75 KGS w/ locked tailwheel

20kgs w/ unlocked tailwheel

21
Q

Max taxi speed?

A

40 KGS with shimmy dampener

20 KGS without shimmy dampener

22
Q

Slope limits?

A

6 nose down

9 nose up

12 cross slope

23
Q

Rate of descent for a/c landing above 19500 lbs? Below?

Sloped terrain?

A

480 fpm

720 fpm

360 fpm

24
Q

Backup Hyd pump limitations

A

33-38 C
24 min ON
72 min OFF

39-60 C
16 min ON
48 min OFF

25
Q

APU operating limits?

A

Either eng and rotor operating

  • 30 min with a temp of 43 C and above

Eng and rotor not operating

  • APU and eng continuously operating up to 51 C
26
Q

Hovering Limitations

A
  1. Prolonged rearward flight and downwind hovering should be avoided to prevent fumes in the A/C
  2. Hovering turns at a rate in excess of 30* per second
  3. Dipping sonar operations at altitudes other than 70 ft
  4. Do not tow the transducer in the water above 8 KGS with array folded and 4 KGS with array unfolded
    (towing is defined as the cable contacting the funnel)
27
Q

Transmission Oil pressure limitations
Shall me documented on a MAF:
During Transient Pitch or steady-state nose-high attitudes:

A
  • Steady pressure outside 45-60 psi but within the normal limits of 30-65 psi
  • Fluctuations not to exceed a range of 10 psi, within the normal limits of 30-65 psi
  • Transmission oil pressure fluctuations (including momentary fluctuations below 30 psi and transient drops below 20 psi for up to one second) are acceptable.
  • Operating with pressure fluctuations below 30 psi shall be limited to 30 min
28
Q

Ng (sys config 16)

A

0-102.2%, continuous, green

102.2%-106%, 2.5 minutes, yellow

106-107%, 12 seconds, red

Max 107%, red

29
Q

Prohibited Maneuvers

A
  1. Aerobatic flight
  2. Practice full-autorotation landings
  3. Intentional approaches into or inducement of retreating blade stall
30
Q

Icing Conditions

A
  1. Helicopters equipped with operable anti-ice and blade deice equipment are permitted flight into forecast or known trace or light icing conditions
  2. all installed anti-ice/deice equipment shall be operational prior to flight.
  3. Helicopters not equipped with operable blade deice equipment are prohibited from flight into forecast or known icing conditions (ambient temps of 5*C or below in visible moisture)
  4. Flight into forecast or known moderate or severe icing conditions is prohibited
31
Q

Temp limits

A

Temps below -40C or above 60C are prohibited

32
Q

Gross Weight Limits

A

Max - 23,500 lbs
Aviation ships - 23,500 lbs
air-capable ships/amphibious assault aviation ships - 22,500 lbs