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FT-339C > AVIONICS > Flashcards

AVIONICS Flashcards

1
Q

What is MP?

A

Mission Processor. It is the main equipment of the aircraft avionic system.
It manages data flow.

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2
Q

What Data Bus is used on the FT-339C?

A

Data Bus MIL-STD-1553B

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3
Q

If MP fails it is backed up by

A

EGI (Enbedded Global Position System/Inertial Laser Gyro)

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4
Q

What is AWG?

A

Audio Warning Generator

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5
Q

AWG is alimented by

A

Essential bus

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6
Q

Master Caution light is part of what system?

A

AWG

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7
Q

EDAB stands for

A

EICAS (Engine Instrument Crew Alerting System) Data Acquisition Box

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8
Q

EDAB is alimented by

A

Essential Bus

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9
Q

How many channels in the EDAB

A

2 identical channels
EDAB1
EDAB2

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10
Q

What are the 3 functions of EDAB?

A
  1. Receives and converts data coming from different systems showing them on the MFDs
  2. It informs the pilot of immediate actions to take. It generates through the AWG tones + master caution
  3. Pilot-cockpit interface (course, heading, barometric settings, etc…)
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11
Q

If there is a partial failure of the system (eg. EDAB1 fails)

A

It automatically change from EDAB1 to EDAB2

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12
Q

If EDAB system fails what data are displayed on the MFDs?

A

Frozen data (last valid collected data)

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13
Q

When a colored band followed by MUX BUS FAIL appears on the screen, what is happening?

A

MP is taking control of MIL-STD 1553B and starts uploading data

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14
Q

Radar Altimeter range of operation is

A

0 - 5000AGL
Max roll 45º
Max pitch 45º

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15
Q

Radar Altimeter resolution

A

From 0 to 300ft -> 10ft
From 300 to 5000ft -> 50ft

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16
Q

Radar altimeter is alimented by

A

Primary bus

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17
Q

What are main systems that you loose in case of MP failure?

A

VOR/ILS/MKR
HUD
DEP
Radar Alt

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18
Q

MFDs can operate in 2 modes

A

MIMIC MODE (MFD FREE OFF)
FREE MODE (MFD FREE ON)

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19
Q

WIP stands for

A

Weapon Inventory Panel

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20
Q

How many levels in the MFDs?

A

2, each one made of 6 different formats

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21
Q

Symbols displayed on the HUD are generated by

A

MP

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22
Q

HUD is energized by

A

Primary bus

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23
Q

What is the only difference between front and rear HUD?

A

Camera in the front HUD

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24
Q

How many format does the HUD have?

A

2, Navigation and Combat

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25
Q

What are the 3 path markers that can be displayed on the HUD?

A

FPM (Flight Path Marker)
VV (Velocity Vector)
FRL (Fuselage Reference Line)

26
Q

EGI stands for

A

Embedded Global Position System/ Inertial Laser Gyro

27
Q

What does EGI provide?

A

Attitude
Heading
Navigation data
Groundspeed

Backup for MP failure

28
Q

FDVR stands for

A

Flight Data and Voice Recorder

29
Q

EGI is powered by

A

Essential bus

30
Q

What alignment procedures of EGI can be performed?

A

GC ALIGNMENT (4min)
FAST ALIGNMENT (30sec)
IFA (35sec to acquire satellites + 4 to 20 min)

31
Q

Fast alignment of INS can be performed in 2 ways

A

STORED HEADING (Heading of last engine shut down)
BATH (Best Available True Heading) inserted by the pilot

32
Q

If GPS fails after 10min from takeoff, the error will be

A

Limited by INS to 0.8NM/h (both if NAV or DEG NAV)

33
Q

How many steer points are there in the navigation data base?

34
Q

EGI is powered by essential bus and controlled by what switch?

35
Q

When power is removed from EGI

A

A dedicated electrical circuit maintains EGI powered for 15sec more to permit orderly shutdown

36
Q

TACAN provides

A

Bearing
Range

37
Q

How many channels does the TACAN have?

A

126 in X or Y

38
Q

TACAN power is supplied by

A

Essential bus

39
Q

TACAN is connected to the MIL-ST 1553B via

A

MP, that uses EGI as backup

40
Q

VOR provides

A

Bearing only (if not coupled with DME or TACAN)

41
Q

VOR/ILS/MKR receives power from

A

Primary bus

42
Q

VOR won’t be available anymore if what system fails?

43
Q

CID stands for

A

Communication Identification Display

44
Q

COMM1 and COMM2 are alimented by

A

Essential bus

45
Q

How many pre-set channels in COMM1/2?

46
Q

If the red light is flashing in the COMM1/2 it means that_____
While if the red light is steady, it means that_____

A

System test
System failure

47
Q

Guard freq is

48
Q

ELT stands for

A

Emergency Locator Transmitter

49
Q

UAB stands for

A

Underwater Acoustic Beacon

50
Q

UAB can operate for how long

A

30 days, at a depth from SEA LEVEL to 2.000ft

51
Q

IFF is alimented by

A

Essential bus

52
Q

In ICS panel the INT knob is used for

A

Adjusting the volume of intercoms
HOT MIC if out
COLD MIC if in

53
Q

IFF operative modes

A

MODE 1
MODE 2
MODE 3/A
MODE S
MODE C

54
Q

If set in A/A TR mode, TACAN can be used for

A

Determine the distance between 2 aircraft
This operation mode must be 63 channels apart (cardioid)

55
Q

ADI doesn’t approximately match HUD until

56
Q

What is 339C RNP value?

57
Q

What DMG stands for and what is it?

A

Digital Map Generator

It is composed of DTM (Data Transfer Module) and DRU (Data Receptacle Unit).
The map is continuously updated with data supplied by EGI

58
Q

MP functions

A

-Primary bus controller
-Head up display symbol generation
-DEP data entry
-MFD format selection
-Sends signals to the DMG, allowing the use of the cursor
-Ballistic computation
-Data Base updating. It compares information between MP, DTM and MFDs (same data base for information sharing)

59
Q

What is the Radar Altimiter average error while in flight?

A

3ft +-3% of the indicated height

60
Q

What is the heading deviation that can be seen and accepted between HUD/MFD and Magnetic Compass?
And why can we have this discrepancy?

A

The accepted deviation is +-5º

Last update on the EGI for magnetic variation compensation was in 1995, so the difference might exceed the foreseen value (5) depending on the local magnetic variation

FT-339C (12 decks)

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