Flight Management, Navigation, Radar Flashcards Preview

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Flashcards in Flight Management, Navigation, Radar Deck (18)
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1
Q

Describe the operating modes of the Flight Management Guidance Computers(FMCG).
(Pic)

A
  1. Dual:
    A. Normal mode of operation
    B. Both FMCGs are sync’ed,
    Meaning data entered into one multi
    Function Control and Display Unit
    (MCDU) is also transferred to the other
    FMCG
  2. Single:
    A. FMCG operating mode when it is the sole
    Operating FMCG. The other one has
    Failed
    B. Provides all related functions, with some
    Limitations
    C. Indications of a failed FMGC include:
    1. 1FD1 or 2FD2 in Column 5 of the FMAs
    Indicating that the FDs are using the
    Same FMCG as a source of
    Guidance
    2. OPP FMCG IN PROCESS message in
    MCDU scratchpad
    3. MAP NOT AVAIL or SET OFFSIDE RNG/
    MODE messages on the failed side’s
    ND, depending on EFIS Control Panel
    Settings
  3. Independent:
    A. Mode of operation caused by a
    Significant difference between the two
    FMCGs
    B. There is no synchronization of data
    Between the FMCGs
    C. Indications include the INDEPENDENT
    OPERATION message in the scratchpad
    Of both MCDUs and an illuminated
    Amber IND light on the top of the MCDU
    Cases
2
Q

What are the two failure conditions of the FMGC?

Pic

A
  1. Failed:
    A. The FMGC has completely
    Stopped sending or receiving
    Data
    B. Unavailable for the remainder of the flight
    C. Indications:
    1. 1FD1 or 2FD2 in Column 5 of FMA
    2. OPP FMGC IN PROCESS msg in the
    Operating MCDU scratchpad
    3. MAP NOT AVAIL and SET OFFSIDE/
    MODE msg on the affected ND
  2. Reset:
    A. Error has occurred within the FMGCs
    Software processing
    B. FMGC will attempt to auto restore
    Itself. If successful the FMGC will
    Resume norm ops
    C. Indications:
    1. Same as failure
    D. If auto resychronization occurs, the
    MCDU MENU page will appear
3
Q

Describe the FMGCs navigation aid auto tuning feature

A
  1. Provides localizer guidance during takeoff roll for runways served by an ILS
  2. Auto tuned VOR and DME stations enroute for position and orientation updating
  3. Auto tuned the ILS frequency for final approach guidance, when the ILS approach has been loaded into the flight plan
4
Q

How is VOR info displayed on the ND and ILS information displayed on the PFD?
(Pic)

A
  1. VOR info on the NDs:
    A. When respective EFIS VOR1
    Or 2 Selector switches are
    Placed in the VOR1 or 2 position
    B. When identified by the FMS the stations
    Three letter identifier will be displayed
  2. ILS info on the PFDs:
    A. When respective EFIS (I)LS pb is selected
    B. When identified by the FMS the stations
    Four letter identifier will be displayed
5
Q

What’s the function of the STBY NAV key on the RMP?

Pic

A
  1. When selected:
    A. Activates the STBY NAV
    (ILS, VOR, ADF) Selector
    Keys PF the respective RMP
    B. Deactivates the auto tuning capability
    Of the FMGCs
    C. The MCDU RAD NAV page is unusable
    D. Green light illuminates next to the key
    Indicating activation
    E. An R appears next to the tuned VOR freq
6
Q

What are the indications of a tuned VOR on the ND?

Pic

A
  1. If a station has been auto by the FMGCs it will ONLY contain the stations three letter identifier
  2. If the station has been manually tuned by the MCDUs RAD NAV page, an underlined M appears next to the stations three letter identifier
    A. Referred to as Hard Tuned
  3. If the station has been manually tuned by an RMPs Standby NAV keys, an underlined R appears next to the stations three letter identifier
    A. Referred to as Remotely Tuned
7
Q

What’s the function of the ADIRU Mode Selector?

Pic

A
  1. OFF -depowered, aircrafts present location stored
  2. NAV - establishes power, initiates IR alignment
  3. ATT - provides only Attitude and Heading info following an attempt at an inflight realignment
8
Q

What’s the time required for a full ADIRS alignment verses a quick realignment?

A
  1. Full: 5-10 minutes

2. Quick: 30 sec - 3 minutes

9
Q

How do you perform a quick realignment of the ADIRUs?

A

Move all three mode Selector switches from NAV to OFF and back to NAV within 5 sec of selecting them to OFF

10
Q

What’s the meaning of a steady IR ALIGN light and a flashing IR ALIGN light?
(Pic)

A
  1. Steady: the respective ADIRU is operating normally in the alignment mode
  2. Flashing: a fault has occurred during ADIRUs alignment, possibly caused by:
    A. Movement of aircraft during alignment
    B. A present position entry was never made
    On the MCDUs INIT page, and 1 minute
    Remains in the alignment process
    C. The position stored at shutdown by the
    IRU(s) differs from the present position
    Entered in the MCDU
11
Q

What’s the meaning of the ON BAT (Amber) light on the ADIRS Panel?
(Pic)

A
  1. Illuminates steady when one or more ADIRU is operating on battery power
  2. Appears for 5 seconds when an ADIRU Mode Selector is placed from OFF to NAV as an indication that the respective ADIRU is capable of operating on battery power when required
12
Q

Will the ON BAT light illuminate during a quick realignment?

A

No

13
Q

What is the function of the radars MODE Selector knob?

Pic

A
  1. WX: displays precipitation returns
    A. Black - min/no intensity
    B. Green - low intensity
    C. Amber - moderate intensity
    D. Red - higher intensity (saturation)
  2. WX+T: displays both precip returns and turn.
    A. Magenta - represents turbulence
  3. TURB: displays only areas of turbulence in magenta
    A. ND range must be set to 40 miles or less
    For the display of turbulence
  4. MAP: ground mapping mode
    A. Black - water or radar shadow
    B. Green - ground returns
    C. Amber - man made structures or high
    Terrain
14
Q

What’s the radars functionality during auto self test?

Pic

A
  1. When first turned on, the radar is fully operational and is radiating energy while performing a 45 sec self test
  2. A warm up period is not required
  3. Quick self tests are performed at the end of each radar antenna sweep
  4. Radar system fault/malfunction indications are only displayed on the NDs
15
Q

What’s the function of the radar GAIN Selector knob?

Pic

A

Allows for the control of the radars energy beam strength:
1. CAL(calibrated) - provides a predetermined bean power level but may not provide the optimum beam power for a given weather condition
2. MIN to MAX - allows for manual control of the beams strength
A. MIN: greater beam strength than the CAL
Level
B. MAX: most powerful beam strength
C. When in MIN to MAX range, MAN
Appears on the NDs

16
Q

When is a manual gain setting recommended for the radar?

A

Above FL250

17
Q

What’s the function of the GND CLTR SPRS Switch?

Pic

A
  1. When placed to ON eliminates the majority of ground clutter targets
  2. Ground targets are displayed in magenta
  3. The switch is spring loaded to the OFF position and must be held in the ON position for ground clutter suppression
18
Q

What’s the meaning of the radars Path Attenuation Correction (PAC) indication?
(Pic)

A
  1. Radar attenuation has been detected (A yellow alert bar appears at the top of the NDs)
  2. The radar system is advising that additional weather targets beyond what is currently being displayed may be present but cannot be viewed.
    A. In order for a pac alert:
    1. GAIN Selector knob must be in CAL
    2. Intervening (currently displayed)
    Weather must be within 80 NM of the
    Aircraft
  3. Pilot actions would be to increase GAIN selection