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Billings CH47D > Limitations > Flashcards

Limitations Flashcards

1
Q

Aircraft Certification

A

Certified under Restricted Category operations for:

*Agricultural Use
* Forest and Wildlife Conservation
* Other Special-Purpose Operations
* Rotocraft external load operations (except for Human External Cargo)
* Carriage of cargo incidental to operators business, but not for compensation or hire

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2
Q

Engine Oil Pressure

A 
5psi min for ground idle
35 psi min at 80-95% N1
50psi min above 95%
110psi max in emergency power range
150psi max for cold weather starts
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3
Q

Engine Oil Temp

A

149*C

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4
Q

Eng XMSN/Transmission Oil Temp

A

140°C for comb, aft, or fwd

190°C for eng 1/2 XMSN

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5
Q

Transmission Oil Pressure

A

7psi min for ground idle

20psi min for 100% RRPM

20-90psi normal operation

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6
Q

Rotor Limitations

A

106% max transient power ON

108% max power OFF

108% is exceeded, no entry needed unless 111% is exceeded

111% max transient

Operation between 92 and 97 percent is permitted when water taxiing

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7
Q

Cruise Guide Indicator

A

At or below 98% RRPM with inop cgi is prohibited

Any excursion into the red or yellow band for more than 45 seconds requires an entry on the appropriate mx forms

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8
Q

Starting/Shutdown Limits

A

APU shall not be started with a tailwind in excess of 25 knots
Engines shall not be started with a tailwind in excess of 10 knots

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9
Q

N2 Limits

A

111.5%

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10
Q

Engine Overspeed

A

N1 in excess of 110%

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11
Q

Max Gross Weight

A

50,000lbs

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12
Q

Cargo Hook

A

Max load is 26000lbs

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13
Q

Landing Limits

A

60 knots max for running landings
20° max nose up attitude
492fpm max descent for gross weights up to 33,000lbs
450fpm max descent for 33,000 to 40,000lbs
360fpm max descent for landing above 40,000lbs

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14
Q

Max Crosswind or Sideward Flight speed

A

45 knots max

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15
Q

Max Airspeed in Rearward Flight

A

Max is 45 knots

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16
Q

Max Airspeed with Lower Section of Cabin Entrance Door Open and Locked

A

60 knots max

17
Q

Airspeed to Open/Close Rescue Hatch Door

A

Shall not be opened or closed above 90 knots

18
Q

Airspeed for Windshield Wipers

A

Wipers shall be off at airspeed above 130 knots

19
Q

Airspeed for Upper Section of Cabin Entrance

A

Make sure airspeed is less than 100 knots before door is closed in flight

20
Q

Left Side Cabin Escape Hatch

A

Shall NOT be removed or installed in forward flight

21
Q

AFCS Limitations

A

Single AFCS operating limit is 100 knots or Vne, whichever is lower
Aircraft may be operated with both AFCS off up to 160 knots or Vne, whichever is lower

22
Q

Types of Operation

A

VFR - Day and Night. IFR flight is prohibited

23
Q

Shock Absorber Vent Valve

A

Below -18°C valve must be OPEN
Above -1°C valve must be CLOSED
Between -18°C and -1°C valve may be OPEN or CLOSED

Dangerous ground and flight conditions can result up valve is in the wrong position

24
Q

Flight in Ice

A

Flight into known icing is prohibited

25
Q

Water Operations

A

Operations on water are not permitted

26
Q

APU

A

APU operation in flight is prohibited except during emergencies

27
Q

Pitot Tube and AFCS Sideslip Ports

A

PITOT HEAT switch shall not be on for more than 5 minutes on the ground

28
Q

Windshield Heat

A

Shall NOT be used ABOVE 24°C

29
Q

Single Point Refueling

A

Max rate of pressure is 300gpm at 55psi

30
Q

Fuel Tanks

A

Fwd L/R- 122/119 gallons
Main L/R - 278/274 gallons
Aft L/R - 118/117 gallons

1028 gallons total

31
Q

APU Start

A

UTIL HYD PRESS caution light should go out within 30 seconds after APU ON light illuminates

If not, then APU switch OFF

32
Q

PWR XFER Switches

A

HYD 1/2 PRESS lights go out within 30 seconds

If not, PWR XFER switches both OFF, DO NOT FLY THE HELICOPTER

33
Q

Engine Start

A

Engine should accelerate to ground idle within 45 seconds

Engine Oil Pressure 5psi minimum for ground idle

34
Q

Engine Inlet Bypass Panels

A

Need to be removed at temps 4* and below

Billings CH47D (7 decks)

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