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CH-47 (9.4) > 5’s > Flashcards

5’s Flashcards

1
Q

Engine oil pressure limits

A

Pressure limits for:

NG at ground idle - 5 psi
NG 80% to 95% - 32 psi
NG equal to or greater than 95% - 50 psi
Normal operation - 35 to 90 psi
Maximum for contingency power - 110 psi
Maximum for cold weather starts - 150 psi
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2
Q

Max engine oil temperature (at what temperature does caution activate)?

A

149 C

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3
Q

ENG XMSN oil temperature limits.

Caution vs Warning

A

Caution activates greater than 140 C

Warning activates greater than 190 C

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4
Q

XMSN oil temperature limits. (At what temperature does caution activate)?

A

Greater than 140 C

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5
Q

XMSN oil pressure limits.

A

Minimum at ground idle- 7 psi
Minimum at 100% NR - 20 psi
Normal operation - 20 to 90 psi

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6
Q

Flight Control Hydraulic Pressure normal operating range

A

2,500 to 3,200 psi

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7
Q

Utility System Hydraulic Pressure normal operating range

A

2,500 to 3,500 psi

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8
Q

Hydraulic system temperature,

Cautionary range and max

A

Caution range 95-120 C

Max 120 C

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9
Q

Rotor speed limitations

A 
Minimum transient power on- 91%
Transient - 91% to 97%
Normal range - 97% to 101%
Transient - 101% to 106%
Max power on - 106%
Max autorotation - 108%
*Maximum transient* - Max Transient per Table 5-5 is 111%. 111.5% only pertains to the note regarding the 2408-13-1 entry requirements.
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10
Q

Should NR exceed _____% but not ____%, no entry need be made on a form (BONUS), but willful operation will not be conducted in this range.

A

108%, 111.5%, DA Form 2408-13-1

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11
Q

CGI ranges

A

Green - normal operation
Yellow - transient
Red - avoid
White - test

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12
Q

Flight with NR equal to or less than ____% with an inoperative CGI is ________.

A

98%, prohibited

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13
Q

Any excursion into the red or yellow band of the CGI for more than ____________ requires and entry on DA Form 2408-13-1.

A

45 seconds

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14
Q

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

A

25 knots

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15
Q

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

A

10 knots

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16
Q

If it becomes necessary to shutdown outside of [tail] wind limits shown in figure 5-6 or 5-7, the following precautions are recommended:

A

Aircraft should land in an area which is

  • clear
  • level as possible
  • at least 300 feet away from verticals obstructions
  • positioned so that wind is coming at the aircraft from the left side
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17
Q

PTIT Limits

A

MAX continuous- up to 816 C

30 minutes - 816 to 854 C

10 minute - 854 to 899 C

2.5 minute(contingency)- 899 to 932 C

12 seconds (MAX TRANS)- 932 to 943 C

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18
Q

NG limits

A

Ground idle minimum- 50%

Maximum- 111%

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19
Q

Max NP speed (%)

A

111.5%

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20
Q

Only those fuels listed in ______________ shall be used. Emergency fuel shall not be used for more than ________ cumulative time

A

Chapter 2

6 hours

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21
Q

Max GWT

A

50k

22
Q

Cargo hook(s) limitations

A

FWD or AFT hooks- 17k
Tandem load- 25k
Center hook- 26k

23
Q

When a combination of internal and external loads are carried on the same flight and external load exceeds _________ pounds, internal load should be positioned forward of the ________.

A

12k

Utility hatch

24
Q

Cargo Winch weight limitations

A

The cargo winch is rated at 3,000 lbs straight pull. With one pulley the mechanical advantage is doubled to 6,000 lbs. 2 pulleys gets you 9,000 lbs and 3 pulleys the grand total of 12,000 lbs. 5-4 Helicopter Loading Limits paragraph d. (PDF Page 711)

25
Q

The rescue winch is limited to a maximum load of _____ pounds.

A

600 lbs

26
Q

Maximum crosswind or sideward flight is ___knots

A

45 knots

27
Q

Maximum airspeed rearward flight

A

40 knots

28
Q

Maximum tailwind during hover

A

40 knots

29
Q

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

A

60 KCAS

30
Q

Rescue hatch shall not be opened or closed above ________KCAS

A

90 KCAS

31
Q

Upper section of cabin entrance door may only be closed below ________KCAS

A

100 KCAS

32
Q

CAUTION

A dual _______ primary channel failure may occur when in rearward flight or a tailwind in excess of ______ knots.

A

FADEC

40 knots

33
Q

If a sling or hook should fail while carrying a tandem load, limit airspeed to a maximum of:

A

60 KCAS

34
Q

Airspeed limits:
Single DAFCS
DAFCS Off

A

Single -100 KCAS or VNE

Both off- 160 KCAS or VNE, provided DAFCS are turned off below 100 KCAS

35
Q

Aerobatics are prohibited with this helicopter. Aerobatics are defined as intentional maneuvers beyond:

A

30 degrees pitch

60 degrees roll

36
Q

When operating with BALT/RALT engaged, limit bank angles to _____degrees maximum

A

45 degreees

37
Q

Maximum speed for roll on landings

Maximum nose up attitude

A

60 KGS

20 degrees

38
Q

Maximum rates of descent

A

Up to 33k lbs-492 ft/min
33k to 40k- 450 ft/min
Greater than 40k lbs-360ft/min

39
Q

Ground operation limitations

A

0.75” pedal input
1” lateral cyclic
2” aft cyclic
Thrust control lever no lower than ground detent

40
Q

When will a blade watcher and taxi director be positioned?

A
  • When ground taxiing less than 75’ from an obstruction

- on an unimproved or unfamiliar airfield not designated for CH47’s

41
Q

The CH47 is qualified for flight in instrument meteorological conditions provided the following exist:

A
  • both DAFCS are operational
  • SFD’s are operating
  • three MFD’s, two CDU’s, two GPPU’s, two DCU’s, two EGI’s, two ADC’s are operational
  • MFD 1 and 4 are mandatory with the third MFD being either 2 or 3. MFD 5 is optional. 5-7 Helicopter Environmental Restrictions paragraph b. (PDF page 719)*
42
Q

Coupled ILS approaches at localizer intercept angles of greater than ______ degrees are prohibited.

A

60 degrees

43
Q

Shock absorber vent valves

Temperatures for operation

A

Open for operation- below (minus) -18 C

Closed for operation- above (minus) -1 C

44
Q

Max airspeed with skis

A

130 KCAS or VNE

45
Q

Max rates of descent with skis + taxi speed

A

Up to 33k-480 ft/min
46k to 50k- 240 ft/min

Maximum taxi speed is 5KGS

46
Q

Windshield heat shall not be used above ________ C.

A

24 C

47
Q

Maximum rate for pressure refueling

A

300 gal/min at 55 psi

48
Q

The maximum internal pressure of ERFS II tank

A

5 psi

49
Q

How many first aid kits are on board a 47?

A

7

50
Q

How many first aid kits are required to fly?

A

1-services 5 crew members

51
Q

When will the emergency lights come on?

A

1) loss of electrical power

2) landing in excess of 3-4 G’s

CH-47 (9.4) (48 decks)

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