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T-1 Jayhawk > Environmental Systems & Anti-Ice > Flashcards

Environmental Systems & Anti-Ice Flashcards

1
Q

Bleed air (at TRT) normally doesn’t exceed…

A

600 degrees F, 125 psi

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2
Q

AIR COND FAIL annunciator & ACU will shut down if exit air temp exceeds ___ F, or compressor inlet pressure exceeds __ psi

A

400, 53

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3
Q

CABIN AIR OV HT illuminates at

A

390 +/- 15 degrees F in cabin vents

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4
Q

The _ switches in aft compartment will trigger BL AIR DUCT FAIL at ___ F (or an anti-ice problem)

A

4; 350

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5
Q

(Pressurization) How many outflow valves?

A

2

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6
Q

Bleed air pressure to cabin door seal

A

15 psi

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7
Q

Cabin rate of climb is adjustable between __ ft and ____ ft

A

50 to 2000

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8
Q

CABIN PRESSURE HI illuminates

A

11 +/- 1 psid

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9
Q

Outflow valves should keep cabin differential pressure from exceeding…

A

9.1 psid

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10
Q

CABIN PRESSURE LO illuminates

A

9,500 +/- 500 ft cabin altitude

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11
Q

With cabin outflow valve at full decrease, cabin altitude may climb as high as

A

12,500 +/- 500 ft

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12
Q

Prolonged use of EMER pressurization can…

A

melt trim panels, lead to smoke and fumes

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13
Q

When throttles are advanced to T/O, cabin pressurizes approx

A

80 to 120 feet

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14
Q

How many evaporator blower units are in the cabin?

A

3 (fwd, aft, and avionics - not counting stby avionics)

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15
Q

AV BLO FAIL

A

lack of pressure from the avionics blower

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16
Q

The VCCS (vapor cycle cooling system) is located…

A

in the aircraft nose

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17
Q

VCCS is auto depowered if (3 conditions):

A

1) engine start. 2) windshield heat. 3) horiz. stab. anti-ice/de-ice

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18
Q

The only possible power source for electrical heat is…

A

ground power unit

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19
Q

How many electrical heater elements are there?

A

3

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20
Q

Bleed air switch must be in the ___ position to use “ground air”

A

OFF

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21
Q

ICING illuminates when the detector senses ___ inches of ice

A

0.020

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22
Q

The ice detector heating/sensing cycle is ____ seconds

A

50-70

23
Q

Apply engine anti-ice ____ entering icing

A

before

24
Q

L/R ENG ICE TEMP LO

A

< 120 degrees F

25
Q

Don’t operate engine anti-ice on the ground at temperatures above __ C except for test.

A

10

26
Q

Bleed air for wing anti-ice is regulated down to ____ psi

A

38-44

27
Q

Wing anti-ice operation light illuminates

A

11 psi in the anti-ice system

28
Q

WG ICE TEMP LO

A

< 140 degrees F

29
Q

WG OV HT

A

2 switches at 212 F, 1 at 350 F

30
Q

BL AIR DCT FAIL

A

pressure increase of 3.5 +/- 0.5 psi

31
Q

Icing on descent? Don’t use 30 flaps unless (2 scenarios)

A

1) RAT reaches 10 C on descent. 2) Less than 10 minutes in icing and RAT was warmer than -8 C

32
Q

Horiz. stab anti-ice elements are maintained at ____ degrees F

A

260-280 F

33
Q

The horiz. stab. de-ice has __ zones

A

12

34
Q

A complete cycle of the horiz. stab. de-ice zones takes

A

approx 3.5 minutes

35
Q

If horiz. stab. anti- or de-ice fails…

A

turn off both & activate de-ice backup

36
Q

STB ANTI ICE FAIL

A

310 degrees F, or current sensor failure

37
Q

STB DE ICE FAIL

A

malfunction in current sensor, heater mat, or sequence timer

38
Q

For horiz. stab. de-ice backup, the switch must be held to “manual” every _ minutes

A

2

39
Q

“Manual” position on horiz. stab. de-ice backup switch activates heat for ____ seconds

A

30

40
Q

PITOT HEAT OFF

A

One of the pitot heat systems is off or has failed

41
Q

L/R WSHLD OV HT

A

approx. 130 degrees F (should go out at 115)

42
Q

Windshield wiper max airspeed

A

200 KIAS

43
Q

Windshield heat must be ON above ____ ft

A

18000

44
Q

HIGH windshield heat causes _____ and _____ mag compass

A

erratic and unreliable

45
Q

If one pilot is out of the seat above FL ___, the other pilot must have oxygen on.

A

350

46
Q

How much oxygen does the cylinder hold?

A

77 cubic feet

47
Q

When is the oxygen “operationally empty”?

A

10% of rated capacity / 200 psi

48
Q

A temperature drop of 100 degrees F will drop oxygen pressure by ___ %.

A

20

49
Q

The green oxygen discharge indicator will blow out at what pressure?

A

2700 psi

50
Q

How many passenger masks does the T-1 have?

A

7

51
Q

Minutes of oxygen on-board ____ from _____ ft to _____ ft, then ____ from ____ ft to _____ ft

A

declines; 10,000; 25,000; rises; 25,000; 41,000

52
Q

Oxygen isn’t available to anyone unless…

A

SYS READY knob is pulled

53
Q

The redline pressure on the oxygen gauge is

A

2000 psi

T-1 Jayhawk (11 decks)

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