Limitations

Question 1

Type of Ops Permitted

Answer 1

A. Transport Cat A land and over water ops with supplement No. 19

B. Transport Cat B land and over water ops

C. Water operations limited to takeoff and landing

D. VFR

E. IFR with supplement No. 9

F. External load operations

Question 2

Weight Limits Transport and External Load Cat “B”

Answer 2

Transport
20,000 lbs at sea level
Figure 1-1

External Load
22,000 lbs Rotorcraft-Load Combination

Question 3

Transport Cat “B” External Loads

Answer 3

Max takeoff weight - 22,000 lbs (Limited by hover performance as shown in figure 4-9 and max takeoff OAT OF 43.5 C figure 1-1)

Any weight above takeoff, landing, and IGE limit, must be jettisonable, figure 1-1

Max cargo hook capacity is 11,500 lbs

Question 4

External Load Pickups

Answer 4

Vertical acceleration which results in fast load pickup is prohibited

Question 5

Density Altitude Limits for Weight

Transport and External Load Cat “B”

Answer 5

Transport
Takeoff - 12,500 ft max
Enroute - 13,000 ft max up to 19,000 lbs
                 10,000 ft max 19,000-20,000 
                  Lbs
Landing - 12,500 ft max

External Load
19,000 lbs - 13,000 ft max
19,000-20,000 lbs - 10,000 ft max
20,000-21,000 lbs - 7,500 ft max
21,000-22,000 lbs - 6,000 ft max

Question 6

Weight and Balance/CG

Answer 6

Figure 1-2

CG moves forward with fuel burn

Question 7

Engine

Answer 7

Model: GE-CT58-140-2

Engine Horsepower: Min 1500 SHP(Table 1-1) at 103.6% Ng or max T5 of 758 degrees C

Question 8

Starter and Ignitions Limitations

Answer 8

Starter

• Continuous operations for more than 30 seconds is not permitted
• 3 starts per 30 minute period

Ignition
- Limited to two min on, three min off, two min on, 23 min off; or 5 min on, 55 min off

Question 9

Engine Oil Types

Answer 9

Type 1 Oils (MIL-PRF-7808) Colder Temps

Type 2 Oils (MIL-PRF-23699)

Question 10

Engine Oil Temperature Limitations

Answer 10

Max Temp - 121 C

Min Start Temps -
Neg 54 C Type 1 Oil
Neg 35 C Type 2 Oil

Question 11

Engine Oil Pressure Limitations

Answer 11

Max Pressure - 75 PSI
Precautionary - 60 to 75 PSI
Normal - 25 to 60 PSI
Precautionary - 8 to 25 PSI
Min Pressure - 8 PSI

Question 12

Ng Overspeed Limits

Answer 12

Ng
Overspeed Limit Range
103.6% To 105.3% for 15 seconds

Maximum Allowable Speed
103.6% Ng for 2.5 minutes (Single-Engine) (27,200 RPM)

Max Continuous Dual-Engine and 30 min Single-Engine - 100.3% (26,300 RPM)

Min Speed - 52.7% (Idle is approximately 55.7% +/- 3%)

Oscillation - No greater than +/- 1% at steady state

Question 13

Nf Overspeed Limits

Answer 13

Overspeed Limit
118.5% for 15 seconds
(23,100 RPM exceeds 299 Nr limit)

Question 14

TIT During Start

Answer 14

840 C to 2 seconds

Figure 1-3

Question 15

TIT Limitations (All Operations Except Starting)

Answer 15

Max Continuous - 660 C
Max Takeoff (5 Min) - 696 C
Max Single-Engine (2.5 Min) - 758 C
Max Continuous Single-Engine (30 min) - 696 C
Aural Over Temp Warning - 707 +/- 3
Transient Overtemp - 766 C for 15 seconds(figure 1-3)

Question 16

Nf Limitations (Power Turbine)

Answer 16

Normal Operations other than vertical takeoffs Nf - 100% (19,500 RPM, 264 Nr)

Vertical Takeoff - 104% (20,280 RPM, 274 Nr)

Overspeed Limit - 109.1% to 118.5% for 15 seconds max

Max allowable speed - 109.1%

Question 18

Torque Limitations

Answer 18

Max Dual-Engine - 76.5%
Max Single-Engine - 94% at 100% NR OR 100% at 94% Nr
Yellow Arc Dual-Engine - 70 to 76.5%
Green Arc Dual-Engine - 0 to 70%

Question 19

Engine Topping/Tuning Check

Answer 19

Ground Check - Do not exceed 1560 SHP

Engine Power - CHECK (note torque, Nf, T5, and OAT
Do not exceed 2.5 min limits:
Ng - 103.6%
T5 - 758 C
Torque - 94%

Question 20

Engine Limits (Two Engine)

Answer 20

Max Takeoff Power (5 Min)
1400 SHP, 100.3% Ng, and 696 C for 5 MINUTES
If takeoff power is used for more than 5 minutes cumulatively for any one emergency the engine must be inspected.

MAX Continuous Power
1250 SHP, 100.3% Ng, and 660 C for an unlimited time

Question 20

Transmission Limits

Two Engine

Answer 20

Takeoff Power(5 min)
RRPM         TQ            SHP
104%          73.5%      2440
100%          76.5%      2440
94%            76.5%      2300
Max Continuous
100%          70%          2230
94%            70%          2100

Question 21

Engine Limits (Single-Engine)

Answer 21

1500 SHP, 103.6% Ng, 758 C T5 for 2.5 MINUTES

1400 SHP, 100.3% Ng, 696 C T5 for 30 MINUTES

Question 21

Transient OEI Limitations (MX Flights)

Answer 21

10 seconds
TIT: 780 C
Torque: 112%
N1: 105.3%

Question 22

Transmission Oil Temperature Limits

Answer 22

Max - 110 C
Min - (-12 C)
Normal - (-12 C to 100 C)

Min starting temps are -12 C for MIL-PRF-6082 and -43 C for MIL-PRF-23699

Question 22

Transmission Limits

OEI

Answer 22

2.5 Min Emergency Power
RRPM       TQ         SHP
100%        94%      1500
94%          100%     1500
5 Min Takeoff and 30 Min Emergency
100%         88%      1400
94%           93.5%   1400
Max Continuous Power
100%         78.5%    1250
94%           83.5%    1250

Question 23

Transmission Oil Pressure Limits

Answer 23

Max - 85 PSI Normal - 20 to 85 PSI Min - 20 PSI

Question 24

Aircraft Ambient Temp Limit

Answer 24

43.5 C

Question 27

Fuel System Requirements/Limits

Answer 27

Fuel Boost Pumps must be ON and operative for flight. Boost pump failure results in flight only allowable below 4,000’ PA Unusable Fuel 190 gal tanks - 1.3 gallons 175 gal tanks - 2 gallons

Question 27

Approved Fuel Types

Answer 27

JP-4, JP-5, JP-8, and TS-1

Question 28

Engine Fuel Limitation

Answer 28

``` Fuel Pressure Limits - Max 995 PSI - Precautionary 795 to 995 PSI - Normal 210 to 795 PSI - Min 190 PSI Fuel Temp Limits (Ambient) - Above -29 C (JP-4 or JP-5 fuels) - At or Below - 29 C (JP-4 fuels only) ```

Question 29

Rotor Speeds for Power Settings

Answer 29

Takeoff Power Multi-Engine - 100% (normal takeoff and 5 min hovering) Figure 4-1 Takeoff Power Single-Engine - 94% (30 min emergency rating) Figure 4-2 Takeoff Power Single-Engine - 100% (30 min emergency rating) Figure 4-3 Max Continuous Power Multi-Engine - 100% (All conditions of flight for unrestricted duration) Figure 4-4 Engine Torque vs SHP Figure 4-5

Question 31

Rotor Wind Limitations

Answer 31

- Max gust speed for rotor engagements or disengagement is 15 kts - Max steady wind velocity for rotor engagement or disengagement is 52 kts Use figure 1-9

Question 32

Nr Power On Limits

Answer 32

Power On Max - 100% Nr -A max of 104% Nr is permissible at Min collective pitch prior to power applications before takeoff and landing, to allow for transitory RPM droop. Normal Operating Range - Gross weight up to 19,000 lbs and DA to 6,000 feet - 92-100% Nr - Gross weight greater than 19,000 lbs and DA to 6,000 feet - 97-100% Nr - DA greater than 6,000 feet - 100% Nr only

Question 32

Nr for External Load Operations

Answer 32

100% Nr only

Question 33

Nr Power Off Limits

Answer 33

Max - 113% Nr Normal Operating Range - Gross weight up to 19,000 lbs and DA above 6,000 feet - 92-113% Nr - Gross weight 19,000 to 22,000 lbs or DA above 6,000 feet - 100-113% Nr - Transient Range - 88 to 92% Nr below 6,000 ft PA

Question 34

Hydraulic Pressure Limits

Answer 34

Max - 1750 PSI Normal - 1500 PSI Min - 1050 PSI Light - 1000 PSI

Question 34

Flight Crew Requirements

Answer 34

Min flight crew of two pilots

Question 36

Hydraulic Accumulator Limits

Answer 36

Max - 1750 PSI | Min - 500 +/-25 PSI (N2 Precharge Only)

Question 38

Flight Limitations

Answer 38

-H/V Diagram(Figure 1-4 and 1-5) Not applicable to Cat “B” vertical operations -Max gross weight for no avoid region, OEI, takeoff power -External load pickup Rapid load pickup is prohibited

Question 39

Airspeeds

Answer 39

148 kts VNE 120 kts VNE Bubble Windows 20-148 kts Normal 0-20 kts Precautionary Range

Question 40

VNE Charts | Internal Load Operations

Answer 40

Table 1-2 Figure 1-6 and 1-7 Power On and Power Off

Question 41

VNE Chart | External Load Operations

Answer 41

Table 1-3 Figure 1-8 Power On

Question 42

Additional Flight Limitations

Answer 42

- Aerobatics PROHIBITED - NO flight into known icing conditions - Fuel crossfeed under emergency ONLY - With inlet screens installed MIN temp is 2 C if visible moisture is present - Engine inlet anti-ice and pitot heat must be ON during operations at temperatures less than 4 C - Engine anti-ice must be ON during operation at 4 C - Ops with baggage bin or any part of the baggage bin installation are PROHIBITED with the airframe in-line fuel filter system installation - Wind limits for starting rotors Figure 1-9 - Negative g maneuvers are PROHIBITED - Flight into known thunderstorms or areas of moderate to severe turbulence is prohibited - Starter for longer than 30 seconds and/or 3 starts in any 30 min period is prohibited - Rotor brake application below 40% Nr is prohibited