Ch 7 Weather Service

Question 1

Modifier found in remarks
1. AO1
2. AO2
3. COR

Answer 1

1. without precipitation discriminator
2. has precipitation discriminator and can tell the difference between liquid or frozen precipitation.
3. Correction was done to the METAR

Question 2

Description Codes
1. TS
2. SH
3. FZ
4. BL
5. DR
6. MI
7. BC
8. PR

Answer 2

1. thunderstorm
2. showers
3. freezing
4. blowing
5. Low drifting
6. Shallow
7. Patches
8. Partial

Question 3

Sky condition
1. FEW
2. SCT
3. BKN
4. OVC

Answer 3

1. 2/8
2. 3/8 -> 4/8
3. 5/8 -> 7/8
4. sky covered

Question 4

Terminal Aerodrome Forecast
(TAF)

Answer 4

Covers up to 5 miles
- valid for 24 hours

Question 5

Amended meaning

Answer 5

when the current TAF no longer represents the expected weather

Question 6

AIRMET (WA)
airman’s meteorological info
1. airmet sierra
2. airmet tango
3. airmet zulu

Answer 6

significant to light aircraft
issued for moderate icing, turbulence, ceiling less 1,000 ft, visibility less 3m

1. mountain obscuration, IFR conditions
2. turbulence, strong sfc winds, low-level wind shear
3. icing, freezing levels

Question 7

SIGMET (WS)
significant meteorological info

Answer 7

for all aircraft

• severe icing, turbulence, CAT, low visibility

Question 8

Convective SIGMET (WST)

Answer 8

for all aircraft
- tornadoes
-embedded thunderstorms
- thunderstorms
-squall lines

Question 9

Main things to include in a PIREP

Answer 9

1. Location
2. Time
3. ALT/ FL
4. Aircraft Type

Question 10

Weather Depiction Chart
1. hatched areas
2. marginal areas
3. VFR conditions area

Answer 10

1. IFR, ceiling less 1,000 agl or visibility less 3m
2. MVFR, ceiling 1,000 to 3,000 agl & visibility 3 -> 5 m
3. ceilings +3000 agl, visibility +5 m