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CH47F > Limits > Flashcards

Limits Flashcards

1
Q

How long can the pitot heat be on during ground operations

A

5 minutes

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2
Q

XMSN oil pressure limits

A

Min at ground idle: 7 PSI

Min at 100% NR: 20 PSI

Normal operation: 20-90 PSI

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3
Q

When will ENG XMSN warning be displayed

A

190°C

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4
Q

Max XMSN oil temp

A

140°C

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5
Q

Max engine oil temp

A

149°C

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6
Q

Engine oil pressure limits

A

Min press for NG at GND IDLE: 5 PSI

Min press for NG (80-95%): 32 PSI

Min press for NG (>=95%): 50 PSI

Normal operation: 35 - 90 PSI

Max for contingency power: 110 PSI

Max for cold wx starts: 150 PSI

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7
Q

Minimum crew requirements

A

2 pilots

1 FE

Additional crewmembers, as required, will be added at the discretion of the CDR, in accordance with pertinent DA directives

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8
Q

Over water operations requirements

A

Both DAFCS are operational

Pilot/Copilot radar altimeter is operational

Visible horizon is present at operational site

Helicopter drain plugs are installed

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9
Q

Is air-to-ground towing allowed

A

No, it’s prohibited

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10
Q

Windshield heat operational limits

A

Shall not be used above 24°C

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11
Q

ERFS II

A

Max capacity: 825.5 gallons

Useable fuel: 800 gallons

Max internal pressure: 5 PSI

Max allowable suction defueling pressure: -11PSI

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12
Q

RSERFS

A

Max capacity: 516 gallons

Useable fuel: 500 gallons

Max internal pressure: 5 PSI

Max allowable suction defueling pressure: -11PSI

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13
Q

Single point refueling max rate

A

300 gal/min at 55 PSI

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14
Q

Max airspeed with skis

A

130 KCAS or Vne, whichever is slower

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15
Q

Max rate of descent with skis

A

Up to 33,000lbs: 480ft/min

decreases linearly to 240ft/min at 46,000lbs

46,000lbs to 50,000lbs: 240ft/min

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16
Q

Max taxi speed with skis

A

5KGS, when operating on hard prepared surface

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17
Q

Shock absorber vent valve (open/closed)

A

Must be opened for operation below -18°C

Must be closed for operation above -1°C

May be opened or closed from -18°C to -1°C

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18
Q

Equipment requirements for flight under IMC

A

Both DAFCS operational

Both SFDs are operating

3 MFDs (1, 4, and either 2 or 3), 2 CDUs, 2 GPPUs, 2 DCUs, 2 EGIs, and 2 ADCs operational

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19
Q

Coupled ILS approaches at angles greater than ________ are prohibited.

A

60°

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20
Q

Ground operation limitations

A

Right/Left directional pedal: 0.75in

Aft cyclic: 2.00in

Lateral cyclic: 1.00in

Thrust control lever: No lower than ground detent

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21
Q

Max GS for roll-on

A

60KGS

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22
Q

Max nose-up during landing

A

20°

23
Q

Max rate of descent at touchdown for GW

A

<=33,000lbs: 492ft/min

33,000 to 40,000lbs: 450ft/min

> 40,000lbs: 360ft/min

24
Q

Bank limits

A

With operating CGI, bank angles are limited by CGI, but not greater than 60°.

When operating with BALT/RALT engaged, limit bank angles to 45° max

25
Q

What is aerobatics and are they authorized

A

Intentional maneuvers beyond +/- 30° pitch and/or 60° roll

26
Q

DAFCS airspeed limits

A

Single DAFCS: 100 KCAS or Vne, whichever is slower

Both DAFCS off: Up to 160KCAS or Vne, whichever is slower, provided both DAFCS are disabled below 100 KCAS

27
Q

LCT actuator airspeed limits

A

Do not manually extend the LCT beyond the GND position on the cyclic trim indicators at CAS below 60 KCAS.

Use of extended cyclic trim at low airspeeds will result in high aft rotor blade stresses.

28
Q

At negative DA values, the helicopter’s design Vne is equivalent to ______.

At positive DA values, the helicopter’s design Vne us equivalent to _______.

A

170 KCAS

170 KTAS

29
Q

If a sling or hook should fail while carrying a tandem load, limit airspeed to a max of _________.

A

If a sling or hook should fail while carrying a tandem load, limit airspeed to max of 60 KACS

30
Q

Max crosswind or sideward flight airspeed

A

45 KACS

31
Q

Max tailwind or rearward flight airspeed

A

40 KACS

32
Q

Max airspeed with lower section of cabin entrance door open and locked

A

60 KCAS

33
Q

Rescue hatch door shall not be opened or closed above

A

90 KCAS

34
Q

Windshield wipers shall be off at airspeed above

A

130 KCAS

35
Q

Upper section of cabin entrance, ensure airspeed is below ______ before closing door in flight

A

100 KCAS

36
Q

Left side escape hatch airspeed limit

A

Do not install or remove in forward flight

37
Q

Any excursion into the red or yellow band of the CGI for more than _____ required entry on the DA form 2408-13-1

A

45 seconds

38
Q

Winch limits

A

Straight line pull: 3,000lbs

One pulley: 6,000lbs

Two pulleys: 9,000lbs

Three pulleys: 12,000lbs

39
Q

Max load of the rescue hoist

A

600lbs

40
Q

Cargo hook limits

A

FWD and AFT hook: 17,000lbs each

Tandem: 25,000lbs

Center cargo hook: 26,000lbs

41
Q

Max gross weight

A

50,000lbs

42
Q

Fuel to be used

A

Only those fuels listed in CH2 shall be used.

Emergency fuel shall not be used for more than 6 hours cumulative time.

43
Q

TQ limits

A

Max dual engine: 100%

Max single engine: 123%

44
Q

NP limits

A

111.5%

45
Q

NG limits

A

Minimum GND idle: 50%

Max: 111%

46
Q

PTIT limits

A

Max continuous: 816°C

Max (30min): 854°C

Max (10min): 899°C

Max contingency power (2.5min): 932°C

Max transient (12 sec): 943°C

47
Q

Hydraulic system temp limits

A

Max: 120°C

Caution: 95 - 120°C

48
Q

Utility system hydraulic pressure limits

A

Low: 2,500 PSI

Normal 2,500 - 3,500 PSI

High: 3,500 PSI

49
Q

Flight control hydraulic pressure limits

A

Low: 2,500 PSI

Normal: 2,500 - 3,200 PSI

High: 3,200 PSI

50
Q

APU shall not be started with a tailwind in excess of _______.

Main engines shall not be started with a tailwind in excess of _______.

A

25 kts

10kts

51
Q

Flight equal to or less than ________ NR with an inop CGI is prohibited

A

98%

52
Q

NR limits

A

Min transient (power on): 91%

Transient: 91-97%

Normal: 97-101%

Transient: 101-106%

Max transient (Power on): 106%

Max during autorotation: 108%

Max transient: 111%

53
Q

When will the HYD FLT CONTR caution be displayed

A

less than approximately 1,800 PSI

CH47F (20 decks)

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