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107-II > Limitations > Flashcards

Limitations Flashcards

1
Q

Type of Ops Permitted

A

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

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2
Q

Weight Limits Transport and External Load Cat “B”

A

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

External Load
22,000 lbs Rotorcraft-Load Combination

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3
Q

Transport Cat “B” External Loads

A

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

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4
Q

External Load Pickups

A

Vertical acceleration which results in fast load pickup is prohibited

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5
Q

Density Altitude Limits for Weight

Transport and External Load Cat “B”

A 
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
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6
Q

Weight and Balance/CG

A

Figure 1-2

CG moves forward with fuel burn

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7
Q

Engine

A

Model: GE-CT58-140-2

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

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8
Q

Starter and Ignitions Limitations

A

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

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9
Q

Engine Oil Types

A

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

Type 2 Oils (MIL-PRF-23699)

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10
Q

Engine Oil Temperature Limitations

A

Max Temp - 121 C

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

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11
Q

Engine Oil Pressure Limitations

A 
Max Pressure - 75 PSI
Precautionary - 60 to 75 PSI
Normal - 25 to 60 PSI
Precautionary - 8 to 25 PSI
Min Pressure - 8 PSI
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12
Q

Ng Overspeed Limits

A

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

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13
Q

Nf Overspeed Limits

A

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

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14
Q

TIT During Start

A

840 C to 2 seconds

Figure 1-3

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15
Q

TIT Limitations (All Operations Except Starting)

A

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)

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16
Q

Nf Limitations (Power Turbine)

A

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%

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18
Q

Torque Limitations

A

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%

19
Q

Engine Topping/Tuning Check

A

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%
20
Q

Engine Limits (Two Engine)

A

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

20
Q

Transmission Limits

Two Engine

A 
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
21
Q

Engine Limits (Single-Engine)

A

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

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

21
Q

Transient OEI Limitations (MX Flights)

A

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

22
Q

Transmission Oil Temperature Limits

A

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

22
Q

Transmission Limits

OEI

A 
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
23
Q

Transmission Oil Pressure Limits

A

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

24
Q

Aircraft Ambient Temp Limit

A

43.5 C

27
Q

Fuel System Requirements/Limits

A

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

27
Q

Approved Fuel Types

A

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

28
Q

Engine Fuel Limitation

A 
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)
29
Q

Rotor Speeds for Power Settings

A

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

31
Q

Rotor Wind Limitations

A
  • 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
32
Q

Nr Power On Limits

A

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
32
Q

Nr for External Load Operations

A

100% Nr only

33
Q

Nr Power Off Limits

A

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
34
Q

Hydraulic Pressure Limits

A

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

34
Q

Flight Crew Requirements

A

Min flight crew of two pilots

36
Q

Hydraulic Accumulator Limits

A

Max - 1750 PSI

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

38
Q

Flight Limitations

A

-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

39
Q

Airspeeds

A

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

40
Q

VNE Charts

Internal Load Operations

A

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

41
Q

VNE Chart

External Load Operations

A

Table 1-3
Figure 1-8
Power On

42
Q

Additional Flight Limitations

A
  • 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

107-II (2 decks)

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