Questions

Questions

1.The accuracy required of a precision area navigation system is:

a.0.25 NM

b.2 NM

c.1 NM

d.0.5 NM

2.A basic 2D RNAV system will determine tracking information from:

a.twin DME

b.VOR/DME

c.twin VOR

d.any of the above

3.An aircraft using a basic 2D RNAV system is on a section between WP1 and WP2, a distance of 45 NM. The aircraft is 20 NM from the phantom station, which is 270°/30 NM from the VOR/DME. The aircraft is 15 NM from the VOR/DME. The range readout will show:

a.15 NM

b.20 NM

c.25 NM

d.30 NM

4.The sequence of displays accessed on initialization is:

a.POS INIT, IDENT, RTE

b.IDENT, RTE, POS INIT

c.IDENT, POS INIT, RTE

d.POS INIT, RTE, IDENT

5.The IRS position can be updated:

a.on the ground only

b.at designated positions en route and on the ground

c.on the ground and overhead VOR/DME

d.at selected waypoints and on the ground

6.Refer to Appendix A. What are the correct selections to insert the most accurate position into the IRS?

a.3R then 4R

b.2R then 4R

c.4R then 3R

d.3L then 4R

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Questions 16

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16 Questions

Questions 16

7.The position used by the FMC in the B737-400 is:

a.an average of the two IRS positions

b.an average of the two IRS positions, smoothed by the Kalman filtering process

c.taken from the selected IRS, smoothed by Kalman filtering and updated to the external reference

d.generated from the external reference and updated by the IRS as part of the Kalman filtering process

8.The FMC position will be at its most inaccurate:

a.on take-off

b.at TOC

c.at TOD

d.on final approach

9.Which positions can be input to the FMC using a maximum of 5 alphanumerics?

a.SIDS & STARS, reporting points and airways designators

b.Navigation facilities, reporting points and airways designators

c.SIDS & STARS and latitude and longitude

d.Latitude and longitude, reporting points and airways designators

10.The FMC navigational database can be accessed by the pilots:

a.to update the database

b.to read information only

c.to change information between the 28 day updates

d.to change the information to meet the sector requirements

11.Above latitudes of 84° a twin FMS/triple IRS system will go to de-coupled operations. The reason for this is:

a.to prevent error messages as the IRS longitudes show large differences

b.to ease the pilot’s workload

c.to improve the system accuracy

d.because the magnetic variation changes rapidly in high latitudes

12.The maximum range at which VOR bearing information will be used by the B737-400 FMC for fixing is:

a.10 NM

b.25 NM

c.50 NM

d.60 NM

13.Concerning FMC operation, which of the following is true:

a.the FMC combines the long term accuracy of the IRS with the short term accuracy of the external reference

b.the FMC combines the long term accuracy of the IRS with the long term accuracy of the external reference

c.the FMC combines the short term accuracy of the IRS with the short term accuracy of the external reference

d.the FMC combines the short term accuracy of the IRS with the long term accuracy of the external reference

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Questions 16

14.The correct format for the input of position 50N 00527E to the CDU is:

a.5000.0N00527.0E

b.N50E00527

c.N5000.0E00527.0

d.N5000E00527

15.The period of validity of the navigational database is:

a.28 days

b.1 month

c.determined by the national authority and may be from 28 days to 91 days

d.91 days

Appendix A

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16 Answers

Answers

1	2	3	4	5	6	7	8	9	10	11	12
c	b	b	c	a	a	c	c	b	b	a	b
13	14	15
d	c	a

Answers 16

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