3-10. 



3-11. 



3-12. 



3-13. 



3-14. 



3-15. 



Refer to table 5-3 of your text. If it 3-16. 

 has been determined that the height of a 

 cloud layer is 8,300 feet, how is this 

 entered on MF1-10 form? 



1. 83 



2. 85 



3. 800 



4. 830 



Refer to table 5-5 in your text. If a 

 marker 17 miles from a station is visible, 

 the reported visibility should be 



1. 10 mi 3-17. 



2. 15 mi 



3. 17 mi 



4. 20 mi 



The greatest visibility attained or 

 surpassed throughout at least half of 

 the horizon circle, NOT necessarily 

 continuous, defines 



1. prevailing visibility 



2. vertical visibility 



3. sector visibility 



4. visibility 



3-18. 



Refer to table 5-5 of your text. If the 

 transmissometer indicates runway visi- 

 bilities of 3/4, 1, 1 1/2, and 1 3/4 

 miles during a 10-mlnute interval, the 

 reported runway visibility is considered 



1. variable 



2. unacceptable for reporting 



3. only usable below one mile 



4. 1 3/4 miles 



Tower personnel, provided they are certi- 

 fied, will report prevailing visibility 

 whenever the visibility at the usual 

 point of observation or at the tower 

 level decreases to less than 



1. 5 mi 



2. 7 mi 



3. 3 mi 



4. 4 mi 



Tower prevailing visibility, column 4a 

 on MF1-10, will be entered whenever the 

 visibility at the usual point of obser- 

 vation is less than 4 miles and the 

 reported tower visibility is 



1. equal to the value of column 4 



2. twice the value in column 4 



3. more than half the value of column 4 



4. less than half the value in column 4 



3-19. 



3-20. 



If the prevailing visibility is 1 mile, 

 the visibility in the northeast sector is 

 2 miles, in the southeast sector 1 mile, 

 in the southwest sector 1/2 mile, and in 

 the northwest sector 1/4 mile, what should 

 be entered in column 13 of the MF1-10 

 form? 



1. VSBY SW 1/2 NW 1/4 



2. VSBY SE 1 SW 1/2 NW 1/4 



3. VSBY NE 2 SW 1/2 NW 1/4 



4. VSBY NE 2 SE 1 SW 1/2 NW 1/4 



Variable visibility is entered in column 

 13 of the MF1-10 when the visibility is 

 variable and less than how many miles? 



1. 1 mi 



2. 2 mi 



3. 3 mi 



4. 4 mi 



The AN/GMQ-13( ) autographic records are 

 destroyed after being retained for a 

 period of 



1. 1 mo 



2. 2 mo 



3. 3 mo 



4. 6 mo 



When should the station name, time check, 

 and date-time group (LST) be entered on 

 ceilometer records? 



1. At the time of each 6-hourly obser- 

 vation 



2. At the beginning and end of the chart 

 or any detached portion thereof 



3. When notified of an aircraft accident 

 in the vicinity of the station 



4. When the recorder is stopped or 

 started 



Time adjustment on the Transmissometer 

 AN/GMQ-10( ) should be applied whenever 

 the error exceeds the minimum of 



1. 1 minute 



2. 2 1/2 minutes 



3. 5 minutes 



4. 30 minutes 



Learning Objective: Recognize 

 functions, maintenance practices, 

 operating principles and procedures, 

 and construction features of the 

 various cloud height measuring 

 equipments. 



16 



