Ch. 5 - Limitations (LIMITS)

Question 1

Minimum crew to fly the helicopter?

Answer 1

PLT and CPG

Question 2

Minimum crew for ground maintenance runs?

Answer 2

MTP (PLT station). Technical observer may be authorized to occupy the CPG station during ground maintenance at the discretion of the commander.

Question 3

Nr - Rotor Speed Limitations

Answer 3

110 Maximum (>110 red)
106-110 Transient (yellow)
95-105 Normal (<97 low rotor annunciated, >97 green)
0-94 Transient (red)

Question 4

[NOTE] It is normal for oil pressure to be high during first start when oil is cold. __________.

Answer 4

Oil pressure should return to normal after 5 min of operation at idle speed. Do not accelerate above ground idle speed until oil pressure can be held at or below maximum limit throughout acceleration.

Question 5

ENG OIL PSI

Answer 5

120 Maximum (>120 red w/box)
23-120 Normal
23 Minimum (<23 red)

Question 6

HYD PSI

Answer 6

> 3410 Transient - permitted for 5 sec (yellow; >=5s red w/box)
3310-3400 Transient - permitted for 5 min (yellow; >=5m red w/box)
2750-3300 Normal (green)
1260 Minimum (<1260 red w/box)

Question 7

Engine Starter Limitations; Air Turbine Starter (ATS)
A starting cycle is the interval from _____ and acceleration of the _____ from zero RPM to ____. The _____ delay between start attempts applies when the first attempt is aborted for any reason. If motoring is required for an emergency, the ____ delay does not apply.

Answer 7

start initiation
output drive shaft
starter dropout
60 second / 60 second

Question 8

Engine Starts at Ambient Temperatures of 16*C and Below: ____ consecutive start cycles may be made, followed by a ____ rest period, followed by ____ additional start cycles. A ____ rest period is then required before any additional starts.

Answer 8

TWO consecutive start cycles may be made, followed by a 3 MINUTE rest period, followed by TWO additional start cycles. A 30 MINUTE rest period is then required before any additional starts.

Question 9

Engine Starts at Ambient Temperatures Above 16*C: ____ consecutive start cycles may be made. A ____ rest period is then required before any additional starts.

Answer 9

TWO consecutive start cycles may be made. A 30 MINUTE rest period is then required before any additional starts.

Question 10

Dual engine starts are _____ due to ______.

Answer 10

prohibited due to insufficient IPAS air

Question 11

TGT Limiter Control Values

Answer 11

DE: 866 +/- 12 *C
SE: 891 +/- 12 *C

Question 12

Turbine Gas Temperature (TGT) Limits

Answer 12

949 Maximum (>949 red)
904-949 SE Transient, 12 sec (yellow)
879-903 SE Contingency, 2.5 min (yellow)
852-878 Maximum Rated Power, 10 min (yellow)
851 Maximum during Start
811-851 Intermediate Rated Power, 30 min (yellow)
810 Maximum Continuous Power
0-810 Normal (green)

Question 13

Engine Power Turbine Speed (Np) Limitations

Answer 13

121 Maximum (red)
115 Engine Overspeed Annunciated
106-121 Transient, 12 sec (yellow; w/box at 115)
0-105 Normal (green)

Question 14

Engine Gas Generator (Ng) Limitations

Answer 14

105. 1 Maximum (>105.1 red)
106. 3-105.1 Transient, 12 sec (yellow)
107. 1-102.2 Normal (green)
108. 0 Minimum engine out warning annunciated (<63.0 red w/box)

Question 15

Engine Torque (Nr < 50%)

Answer 15

30 Maximum (>30 red)
0-30 Normal (green)

Question 16

Engine Torque (Nr <90%)

Answer 16

70 Maximum (>70 red)
0-70 Normal (green)

Question 17

Engine Torque Limitations (SE)

Answer 17

125 Maximum (>125 red)
123-125 Transient, 6 sec (yellow)
111-122 SE Contingency, 2.5 min (yellow)
110 SE Max Continuous Power (green)
0-110 Normal (green)

Question 18

Engine Torque Limitations (DE)

Answer 18

115 Maximum (>115 red)
101-115 Transient, 6 sec (yellow)
0-100 Normal (green)

Question 19

[CAUTION] Avoid prolonged operation at _____ Nr with the APU running. The APU will ________. This creates high loads on the clutch and shall be avoided.

Answer 19

94-96% Nr

oscillate from engaged to disengaged

Question 20

APU operation is ______ during normal flight. After a fault or aborted start, wait _____ before attempting another start. After _______, wait ____ before a ___ start attempt. No more than ______.

Answer 20

APU operation is PROHIBITED during normal flight. After a fault or aborted start, wait 30 SEC before attempting another start. After 2 CONSECUTIVE START ATTEMPTS, wait 20 MIN before a 3rd start attempt. No more than 3 START ATTEMPTS ARE PERMITTED IN ONE HOUR.

Question 21

[CAUTION] Do not operate the APU for more than ___ at a XMSN TEMP 1 or 2 of ______. Shut down APU to prevent damaging _______.

Answer 21

5 minutes
120-130*C
accessory gearbox components

Question 22

During prolonged ground operations greater than ___, observe XMSN TEMP 1 and 2 on the SYS page. If the temperature exceed 130*C, __________, or _____.

Answer 22

30 minutes
the APU shall be shutdown and the XMSN fluid allowed to cool for 30 min prior to resuming APU operations; or transmission fluid may be cooled by operating an engine with rotor turning.

Question 23

The aircraft maximum gross weight is _____ pounds, except for non-tactical ferry flights, which may not exceed ______.

Answer 23

20,260 lbs

23,000 lbs

Question 24

Maximum Airspeed for Autorotation

Answer 24

145 KTAS. Above 145 KTAS, drag on the rotor system will cause Nr to decay rapidly.

Question 25

Airspeed limits with one engine inoperative is the greater of:

Answer 25

67% Vne | MAX END / MAX R/C airspeed

Question 26

Maximum rearward / sideward flight is ____

Answer 26

45 KTAS

Question 27

The searchlight is designed for operation (extend/retract/rotate) at speeds up to ____. However, as long as operation is not attempted, the lighthead can be left in any extended position at speeds up to ___.

Answer 27

90 KTAS | Vne

Question 28

Maximum Airspeed with Symmetrically Loaded Fuel Tanks

Answer 28

130 KTAS

Question 29

Maximum Airspeed for Stores Jettison

Answer 29

130 KTAS Hover-45 KTAS (minimize side-slip) 45-130 KTAS (ball centered)

Question 30

Maximum Airspeed for External Tanks Jettison

Answer 30

100 KTAS

Question 31

Intentional Maneuvers beyond attitudes of ___ in pitch or ___ in roll are prohibited.

Answer 31

+/- 30* in pitch | +/- 60* in roll

Question 32

Avoid aggressive directional or lateral control inputs greater than _____ when conducting combat maneuvers requiring a left turn. This is to prevent _________.

Answer 32

1 inch/second | excessive tail rotor scissors loads

Question 33

Avoid large pedal step inputs in arresting right hovering / low speed yawing turns greater than _____. This is to prevent _______.

Answer 33

60*/second | excessive tail rotor drive system loads

Question 34

Flight with the canopy open is prohibited, except for ______.

Answer 34

smoke/fume elimination

Question 35

Landing Limits

Answer 35

pitch change from a hover greater than 7* nose up or 12* nose down, or a roll attitude greater than 10*

Question 36

Flight into ____ or _____ ____ turbulence or into ____ _____ turbulence is prohibited

Answer 36

Flight into KNOWN or FORECAST EXTREME turbulence or into KNOWN SEVERE turbulence is prohibited

Question 37

Intentional flight into ____ or ____ ____ icing conditions is prohibited. Flight in light or trace icing is authorized _________.

Answer 37

Intentional flight into KNOWN or FORECAST MODERATE icing conditions is prohibited. Flight in light or trace icing is authorized ONLY AS A TRANSIENT CONDITION.

Question 38

Maximum airspeed for rotor start/stop

Answer 38

45 knots to prevent droop stop damage