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U-28 > Ice Protection System (CSG) > Flashcards

Ice Protection System (CSG) Flashcards

1
Q

Ice Protection System

Power source for the Propeller De-ice system is _______. The circuit is protected by a _____ amp CB located _________.

A

Gen 1, 40, Engine Compartment

AOH Vol 2, Section 26

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2
Q

Ice Protection System

Describe operating modes and temperature ranges for the prop de-ice system.

A

Mode 1: >0°C, no action;
Mode 2: 0° to -16°C, opposite pairs of blades heated for 45 sec, then 90 sec OFF;
Mode 3: < -16°C, opposite pairs of blades heated for 90 sec, no break

AOH Vol 2, Section 26

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3
Q

Ice Protection System

Whenever PROP DE-ICE is activated, the _______ should also be opened to provide separation of ice during air induction and ensure the AOA is in ________________ mode.

A

Inertial Sep, PUSHER ICE

AOH Vol 1, Chapter 7

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4
Q

Ice Protection System

If PROP DE-ICE fails in icing conditions, what can happen?

A

Degraded performance

AOH Vol 1, Chapter 3, Electrical

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5
Q

Ice Protection System

If there is a difference between the right and left wing OAT sensors of more than ______ degrees, the Prop De-ice Controller (PDIC) automatically sets the system to mode _____.

A

5, 2

AOH Vol 2, Section 27

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6
Q

Ice Protection System

When must the pneumatic de-icing system be activated?

A

First sign of ice on the aircraft

AOH Vol 1, Chapter 7

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7
Q

Ice Protection System

What is the order of inflation for the five de-ice boot sections?

A

Tail, wing inboard lower, upper, wing outboard, lower, upper

AOH Vol 2, Section 19

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8
Q

Ice Protection System

What are the de-ice boot cycle times for 1 minute mode and 3 minute mode?

A

40 sec, 20 sec rest;
40 sec, 140 sec rest

AOH Vol 2, Section 19

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9
Q

Ice Protection System

Operation of the pneumatic wing de-ice system below ______ °C or above ______ °C may cause permanent damage to the de-icing boots.

A

-40, +40

AOH Vol 2, Section 19

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10
Q

Ice Protection System

Flaps are limited to ______ degrees anytime boots de-icing is activated.

A

15

AOH Vol 1, Chapter 3, Electrical

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11
Q

Ice Protection System

If there is an error in the timing sequence or duration or if inflation pressure drops below ____ psi, the CAWS DE-ICE BOOTS light will illuminate.

A

11

AOH Vol 2, Section 19

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12
Q

Ice Protection System

If de-ice boots stay in failure status and the airframe is not free of ice accretion before landing approach, flap position is limited to _______ degrees.

A

0

AOH Vol 1, Chapter 3, Electrical

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13
Q

Ice Protection System

What is the purpose of the inertial separator?

A

Eject foreign objects and ice at the rear of the plenum to prevent ingestion into the engine

AOH Vol 2, Section 27

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14
Q

Ice Protection System

If the CAWS INERT SEP light illuminates, what does that mean?

A

Inert Sep door failed to fully open

AOH Vol 1, Chapter 3, Electrical

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15
Q

Ice Protection System

The Windshield Heat anti-ice system includes _____ imbedded horizontal heating elements/temperature sensors.

A

3

AOH Vol 2, Section 11

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16
Q

Ice Protection System

What is the difference between windshield heat LIGHT and HEAVY modes?

A

Light mode heats all three elements; heavy mode heats only center element, but > AMPs applied to center element (less tot AMPs)

AOH Vol 2, Section 11

17
Q

Ice Protection System

What elements are heated when the PROBES switch is turned on?

A

Static ports, LH & RH Pitot Tubes, AOA probes, vanes, plates

AOH Vol 2, Section 23

18
Q

Ice Protection System

Which AOA vane provides fast-slow indications to the pilots’ ADIs?

A

Left

AOH Vol 2, Section 23

19
Q

Ice Protection System

If AOA probe de-ice fails in icing conditions, flap position is limited to ______ degrees and landing approach VREF is ________ KIAS for the Trainer aircraft.

A

15, 108

AOH Vol 1, Chapter 3, Electrical

20
Q

Ice Protection System

If the CAWS PITOT 1 light illuminates, which wing’s pitot port has failed?

A

Right Wing

AOH Vol 2, Section 23

21
Q

Ice Protection System

What is Pusher Ice Mode?

A

Adjusts AOA up 8° for earlier stall warning when PROP and INERT SEP selected for icing conditions

AOH Vol 1, Chapter 7

22
Q

Ice Protection System

If Pusher Ice Mode fails in icing conditions, flap position is limited to ______ degrees. VREF for the Trainer aircraft is ______ KIAS.

A

15, 108

AOH Vol 1, Chapter 3, Flt Controls

23
Q

Ice Protection System

When landing with 0° flaps in icing conditions, the ground roll distance can be increased by up to ______ % without reverse thrust applied, and up to ______ % with reverse thrust applied.

A

179, 147

AOH Vol 1, Chapter 7

24
Q

Ice Protection System

How does engine air intake lip heat work?

A

Hot air extracted from exhaust in left exhaust stack and routed through the intake lip, then enters exhaust stream on the right

AOH Vol 2, Section 27

U-28 (19 decks)

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