Limits

Question 1

Engines are limited by what 5 things?

Answer 1

Ng

Np

TGT

Oil px

Oil temp

Question 2

Starter cycle is defined by?

Answer 2

Initiation

Acceleration

Dropout

Question 3

TGT MRP EDECUs

Answer 3

0-810, continuous, green

810-851, 30 min, yellow

851-878, 2.5 (10 min for max pwr/limiter checks, red)

878-903, 2.5 min, red

903-949, 12 seconds, red

949, max, red

Question 4

Np

Answer 4

<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%

Question 5

Nr

Answer 5

<96%, avoid, red

96-101%, continuous, green

101-120%, precautionary, yellow

120, max, red

123% max for FCF auto

127% overspeed latch

Question 6

Dual engine TQ <80kias

Answer 6

0-120%, continuous, green

120-144%, 10 seconds, yellow

144%, max, red

Question 7

Dual engine TQ > 80kias

+ note

Answer 7

0-106%, continuous, green

106-127%, 10 seconds, yellow

127%, max, red

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

Question 8

Single Eng TQ

Answer 8

0-135%, continuous, green

135%-144%, 10 seconds, red

144%, max, red

Question 9

Ng (sys config 15)

Answer 9

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%

Question 10

Transmission temp

Answer 10

-50-105 C, continuous, green

105-120 C, precautionary, yellow

120 C max red

Question 11

Transmission Px

Answer 11

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

Question 12

Engine Oil Temp

Answer 12

-50 to 135 C, continuous, green

135 to 150 C, 30 min, yellow

150 C max

Question 13

Engine Oil Px

1 note

Answer 13

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

Question 14

Eng Starter Limits
<16 C
16-52 C

Engine Motor (ignition OFF)

Answer 14

<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)

Question 15

Acceptable APU use includes:

Answer 15

EP’s,

Single engine training

Practice autos

Powering ECS during extreme conditions

Question 16

ENGINE TQs over 150% are displayed as

Answer 16

Red XXX

Question 17

Airspeeds:

Answer 17

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*

Question 18

AOB limits

Answer 18

Above 10000 ft DA -30

Either PRI Servo light- 30

Boost off flight- 30

Question 19

Rotor brake limits?

Answer 19

Max 76%

30-50% for regular stops

180 psi

Question 20

Max touchdown speed

Answer 20

75 KGS w/ locked tailwheel

20kgs w/ unlocked tailwheel

Question 21

Max taxi speed?

Answer 21

40 KGS with shimmy dampener

20 KGS without shimmy dampener

Question 22

Slope limits?

Answer 22

6 nose down

9 nose up

12 cross slope

Question 23

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

Sloped terrain?

Answer 23

480 fpm

720 fpm

360 fpm

Question 24

Backup Hyd pump limitations

Answer 24

33-38 C
24 min ON
72 min OFF

39-60 C
16 min ON
48 min OFF

Question 25

APU operating limits?

Answer 25

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

Question 26

Hovering Limitations

Answer 26

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)

Question 27

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

Answer 27

• 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
• No maintenance action if operating in the precautionary range for 5 min or less
• Prolonged hovering in hot weather (30 Celsius) may cause pressure to go into the precautionary range. Flight is limited to 30 min. No MAF required.

Question 28

Ng (sys config 16)

Answer 28

0-102.2%, continuous, green

102.2%-106%, 2.5 minutes, yellow

106-107%, 12 seconds, red

Max 107%, red

Question 29

Prohibited Maneuvers

Answer 29

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

Question 30

Icing Conditions

Answer 30

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

Question 31

Temp limits

Answer 31

Temps below -40C or above 60C are prohibited

Question 32

Gross Weight Limits

Answer 32

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