Chapter 5

Question 1

Flight with Canopy Enclosure Open

Answer 1

Flight with the canopy open is prohibited, except for smoke/fume elimination.

Question 2

Maneuvering Limits

Answer 2

Intentional maneuvers beyond attitudes ± 30º in pitch and ± 60º in roll are prohibited.

Question 3

APU OPERATING LIMITS - CAUTION 1 (NR %)

Answer 3

CAUTION: Avoid prolonged operation at 94% - 96% NR with the APU running. The APU clutch will oscillate from engaged to disengaged. This creates high loads on the clutch and shall be avoided.

Question 4

Airspeed Limits With One Engine Inoperative

Answer 4

Maximum airspeed with one engine inoperative is the greater of:

1. 67% of V_NE determined from Figure 5-13 using the GROSS WEIGHT line. Above this, a successful autorotation may not be possible due to rapid NR decay.
2. The airspeed for minimum power determined from the applicable Chapter 7 cruise charts using the MAX END/MAX R/C lines.

Question 5

APU Operating Limitations

Answer 5

APU operation is prohibited during normal flight. After a fault or aborted start, wait 30 seconds after APU has stopped before attempting another start. After 2 consecutive start attempts, wait 20 minutes before a third start attempt. No more than three start attempts are permitted in one hour.

Question 6

APU OPERATING LIMITS - CAUTION 2 (XMSN Temp)

Answer 6

CAUTION: Do not operate the APU for more than 5 minutes at a XMSN TEMP 1 or 2 of 120 - 130º C. Shut down APU to prevent damaging accessory gearbox components.

Question 7

Maximum Airspeed for Searchlight Extension

Answer 7

The searchlight is designed for operation (extend/retract/rotate) at speeds up to 90 knots. However, as long as operation is not attempted, the lighthead can be left in any extended position at speeds up to V_NE.

Question 8

LIMITS - TORQUE (%) - Single Engine

Answer 8

125 Maximum (> 125 red)

123 - 125 Transient 6 sec (yellow)

111 - 122 Single engine contingency, 2.5 min (yellow)

110 Single engine maximum continuous power (green)

0 - 110 Normal operation (green)

Question 9

Landing Limits

Answer 9

Do not complete a landing on terrain which produces a pitch attitude change from a hover greater than 7º nose up or 12º nose down; or a roll attitude greater than 10º. Data is not available beyond these limits at gross weights above 17,650.

Question 10

Flight into Turbulence

Answer 10

Flight into known or forecast extreme turbulence or into known severe turbulence is prohibited.

Question 11

LIMITS - TORQUE (%) with NR < 90%

Answer 11

70 Maximum (> 70 red)

0 - 70 Normal operation (green)

Question 12

701D TGT Limiting Range

Answer 12

Dual Engine: 879 ± 12 (854-878)º C

Single Engine: 903 ± 12 (879-903)º C

Question 13

Airspeed Limits For Autorotation

Answer 13

Maximum airspeed for autorotation is 145 KTAS. Above 145 KTAS, drag on the rotor system will cause N_R to decay rapidly.

Minimum rate of descent airspeed is 77 KTAS.

Maximum glide distance airspeed is 107 KTAS.

Question 14

Excessive Tail Rotor Scissors Loads

Answer 14

Avoid aggressive directional and lateral control inputs greater than 1 inch/second when conducting combat maneuvers requiring a left turn. This is to prevent excessive tail rotor scissors loads.

Question 15

LIMITS - 701D TGT (ºC)

Answer 15

949 Maximum (> 949 red)

904 - 949 Single engine transient, 12 sec (yellow)

880 - 903 Single engine contingency, 2.5 min (yellow)

847 - 879 Maximum rated power, 10 min (yellow)

851 Max during start

794-846 Intermediate rated power, 30 min (yellow)

793 Maximum continuous power

0 - 793 Normal operation (green)

Question 16

LIMITS - ENG1 or 2 OIL PRESSURE (PSI)

Answer 16

120 Maximum (> 120 red w/box)

23 - 120 Normal operation (green)

23 Minimum (< 23 red w/box)

Question 17

LIMITS - TORQUE (%) with N_R < 50%

Answer 17

30 Maximum (> 30 red)

0 - 30 Normal operation (green)

Question 18

Flight In Instrument Meteorological Conditions

Answer 18

The aircraft is not qualified for IMC flight. The back-up flight instruments are required to be installed and operational for all flights.

Question 19

Rotor Limitations - Start and Stop Limits

Answer 19

Maximum wind velocity for rotor start or stop is 45 knots to prevent droop stop damage.

Question 20

LIMITS - N_R (%)

Answer 20

110 Maximum (> 110 red)

106 - 110 Transient operation (yellow)

106 High rotor warning annunciated

95 - 105 Normal operation (green)

0-94 Transient operation (red)

Question 21

Use of Force Trim

Answer 21

Force trim will not be selected off except in a failed or partial failed mode.

Question 22

Maximum Airspeed for Stores Jettison

Answer 22

Jettison of external armament stores is not authorized except for emergency conditions and then only from unaccelerated flight during:

1. Maximum airspeed for stores jettison is 130 KTAS
2. Hover to 45 KTAS (minimize side slip, if possible)
3. 45 - 130 KTAS (ball centered, if possible)

Question 23

LIMITS - HYDRAULIC PRESSURE (PSI)

Answer 23

>3410 Transient - permitted for 5 sec (yellow) (≥ 5 sec red w/box)

3310 - 3400 Transient - permitted for 5 min (yellow) (≥ 5 min red w/box)

2750 - 3300 Normal operation (green)

2600 Minimum for APU start

1650 Minimum for emergency hydraulics

1260 Minimum (< 1260 red w/box)

Question 24

LIMITS - ENG1 OR 2 N_G (%)

Answer 24

106 Maximum (> 106 red)

105. 1 - 106 Transient 12 sec (yellow)
106. 1 - 105 Normal operation (green)
107. 0 Minimum engine out warning annunciated (< 63.0 red w/box)

Question 25

**Excessive Tail Rotor Loads**

Answer 25

Avoid large pedal step inputs in arresting right hovering/low speed yawing turns greater than 60º/second. This is to prevent excessive tail rotor drive system loads.

Question 26

**Maximum Rearward/Sideward Airspeed**

Answer 26

Maximum rearward/sideward airspeed is 45 KTAS for all gross weights.

Question 27

**Exceeding Operational Limits**

Answer 27

Any time an operational limit is exceeded, an appropriate entry shall be made on DA FORM 2408-13-1. Entry will state what limit or limits were exceeded, range, time beyond limit, and any additional data that would aid maintenance personnel in the maintenance action that may be required.

Question 28

**Engine Starts At Ambient Temperatures of 61º F (16º C) and Below**

Answer 28

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

Question 29

**Engine Starts At Ambient Temperatures Above 61º F (16º C)**

Answer 29

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

Question 30

**Dual Engine Starts**

Answer 30

Dual engine starts are prohibited due to insufficient IPAS air.

Question 31

**LIMITS - TORQUE (%) - Dual Engine**

Answer 31

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

Question 32

**LIMITS - ENG1 OR 2 N_P (%)**

Answer 32

121 Maximum (\> 121 red w/box) 115 Engine overspeed annunciated 106 - 121 Transient operation, 12 sec (yellow, w/box at 115) 0 - 105 Normal operation (green)

Question 33

**Engine Starter Limitations**

Answer 33

The Air Turbine Starter (ATS) is capable of making the number of consecutive start cycles listed below, when exposed to the environmental conditions specified, with an interval of at least 60 seconds between the completion of one cycle and the beginning of the next cycle. A starting cycle is the interval from start initiation and acceleration of the output drive shaft, from zero rpm, to starter dropout. The 60 second delay between start attempts applies when the first attempt is aborted for any reason and it applies regardless of the duration of the first attempt. If motoring is required for an emergency, the 60 second delay does not apply.

Question 34

**Weight Limitations**

Answer 34

The aircraft maximum gross weight is 20,260 pounds, except for non-tactical ferry flights, which may not exceed 23,000 pounds.

Question 35

**Maximum Airspeed During Manual Stabilator Operations**

Answer 35

Maximum airspeeds are based on stabilator position. The stabilator position and nominal airspeed restrictions are displayed on the **FLT**, **FLT SET**, and **SYS** pages, as described in Paragraph 2-46d.

Question 36

**Flight In Icing Conditions**

Answer 36

Intentional flight into moderate icing conditions is prohibited. Flight into known or forecast trace or light icing conditions is authorized and not considered a hazard unless the condition is encountered for an extended period (over one hour).

Question 37

**Extended APU Ground Operations**

Answer 37

During prolonged ground operations greater than 30 minutes observe **XMSN TEMP 1** and **XMSN TEMP 2** on the **SYS **page. If the temperatures exceed 130º C, the APU shall be shutdown and the transmission fluid allowed to cool for 30 minutes prior to resuming APU ground operations; or transmission fluid may be cooled by operating an engine with rotor turning.