CH 12 Final Approach Flashcards

1
Q

Final Approach Components

A

final approach fix (FAF), stepdown fixes, visual descent point (VDP), missed approach point (MAP), minimum descent altitude (MDA) and decision height/decision altitude (DH/DA). The first four can be defined by a NAVAID, a waypoint, crossing radials of two NAVAIDs, or a radial and DME

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2
Q

optimum final approach course length

A

5 miles but may be as long as 10 miles

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3
Q

Stepdown Fixes

A

Some non-precision approaches may have one or more stepdown fixes between the FAF and the MAP. These fixes are normally included to avoid an obstacle inside the FAF.

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4
Q

VDP

A

a point in a non-precision straight-in approach procedure from which a normal descent (approximately 3°) from the MDA to the runway touchdown point may be commenced, provided visual reference with the runway environment is established

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5
Q

multi-facility approaches, the depicted VDP will be for

A

lowest MDA published

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6
Q

VDP calculation with no DME present

A

take 10% of HAT in seconds then take distance to RWY and groundspeed to calculate VDP Time

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7
Q

when the FAF is the NAVAID for the approach, a course change of up how degrees are possible

A

30 degrees

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8
Q

Calculate VVI for 3 degree GS

A

Groundspeed x 10 / 2

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9
Q

When is timing to MAP required

A

when the final approach does not terminate at a published fix

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10
Q

Runway Environment

A

-threshold, threshold markings or threshold lights
-runway end identifier lights
-touchdown zone, touchdown zone markings, or touchdown zone lights
-runway or runway markings
runway lights
-visual approach slope indicator

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11
Q

Non-radar Approaches

A

ILS, VOR, TAC, NDB, RNAV/GPS and MLS

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12
Q

ILS Required Components

A

Glide Slope, Localizer and outer marker (can be replaced by DME, other NAVIAD, RADIAL or radar)

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13
Q

Transition to the ILS Localizer Course

A

radar vectors or a published approach procedure

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14
Q

Glide Slope usable range

A

10 miles

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15
Q

Localizer usable range

A

18 miles within 10 degrees

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16
Q

Discontinue Approach when

A
  • full-scale deflection of the CDI occurs

- aircraft is more than one dot (half scale) below or two dots (full scale) above the glide slope

17
Q

Can you use the Middle marker beacon as solo sign of MAP

A

No, it may assist you

18
Q

GPS activation of approach

A

within 2 NM of final approach waypoint

19
Q

GPS terminal accuracy

A

1.0 NM

20
Q

GPS Final Accuracy

A

0.3 NM

21
Q

Lost Communications for ASR/ PAR

A

One minute while being vectored to final

  • 15 sec on final ASR
  • 5 Seconds on final PAR
22
Q

Parallel ILS seperated by at least how many feet

A

4300

23
Q

Simultaneous Offset Instrument Approaches (SOIA)

A

parallel runway centerlines are separated by less than 3,000 feet, but are at least 750 feet apart