WX 301 Exam 1 Questions and
Answers 100% Pass
Why is a direct comparison of station pressures difficult? - ✔✔Weather stations are
often at different altitudes
You're flying in Europe and the altimeter setting is reported as 988mb. What is the
altimeter setting in inches Hg? Recall 1013.2mb ~ 29.92 "Hg - ✔✔29.17"Hg
Altimeter setting and sea level pressure (SLP) both provide estimates of the pressure at
a station if that station were lowered all the way to mean sea level? - ✔✔True
Altimeter setting and sea level pressure (SLP) are calculated the same way and provide
the same value, just in different units (inches mercury versus millibars). - ✔✔False
The aneroid barometer at your station reads 27.57"Hg. If the station elevation is 2,000ft,
what is the altimeter setting?
(image 1) - ✔✔29.65" Hg
For the same station as above, what is the altimeter setting if your station pressure is
27.32"Hg?
(image 1) - ✔✔29.38" Hg
At what Pressure Altitude (PA) does 27.32"Hg occur?
(image 2) - ✔✔2,500 ft MSL
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,If your station elevation is 1,250ft MSL and your altimeter setting is 30.19"Hg, what is
the pressure altitude at the station (i.e., the surface PA)?
(image 3) - ✔✔1,000 ft MSL
What is the PA conversion factor for question 8, i.e., how much height must you add to
the station elevation to get the surface PA?
(image 3) - ✔✔-250 ft MSL
For the same station as in question 8 and 9, above, what would be the new surface PA if
the altimeter setting was instead being reported as 29.65 "Hg?
(image 3) - ✔✔1,500 ft MSL
For the same station as in question 8 and 9, above, what would be the new surface PA if
the altimeter setting was instead being reported as 29.65 "Hg?
(image 3)
What is the new PA conversion factor for the above question? - ✔✔+250 ft MSL
In general, as the station pressure falls, what happens to the surface PA? - ✔✔The
surface PA rises
You're flying in Class A airspace (FL180 and above) where PA is always used instead of
true altitude (i.e., your Kollsman window remains set to 29.92"Hg). While descending
you fail to review your checklist and forget to adjust your Kollsman window to the
current altimeter setting of 29.67 "Hg. What will the altimeter read (approximately) at
touchdown if the station elevation of the airport is 865 ft? (Assume 1"Hg = 1,000ft) -
✔✔1,115 ft
COPYRIGHT © 2025 BY BRITTIE DONALD, ALL RIGHTS RESERVED 2
, Using the Standard Conversion Chart, third column (Appendix B in Aviation Weather
Services, Advisory Circular 00-45H, Ch1), what is the pressure altitude of the 505mb
surface? - ✔✔18,000 ft MSL
You're parked on the ramp at your favorite airport. You adjust the Kollsman window
on your pressure altimeter to standard sea-level pressure (29.92"Hg). What altitude
does your pressure altimeter read? - ✔✔Pressure altitude
You're parked on the ramp at your favorite airport. You adjust the Kollsman window
on your pressure altimeter to the current altimeter setting being broadcast on ATIS.
What altitude should your pressure altimeter read? - ✔✔Airport (ramp) elevation
If the Kollsman window on your pressure altimeter is set to 30.15"Hg but the actual
altimeter setting is 29.50"Hg, then your true altitude will be _______ than the indicated
altitude. - ✔✔Lower than
If the Kollsman window on your pressure altimeter is set to 29.90 "Hg but the actual
altimeter setting is 30.40"Hg, then your true altitude will differ from your indicated
altitude by approximately: (Hint: Pressure in the lower troposphere changes about
1000ft per 1"Hg) - ✔✔500 ft
If the Kollsman window on your pressure altimeter is set to 29.90 "Hg but the actual
altimeter setting is 30.40"Hg, then your true altitude will differ from your indicated
altitude by approximately: (Hint: Pressure in the lower troposphere changes about
1000ft per 1"Hg)
500 ft
Will the true altitude be higher or lower than the indicated altitude? - ✔✔Higher
COPYRIGHT © 2025 BY BRITTIE DONALD, ALL RIGHTS RESERVED 3
Answers 100% Pass
Why is a direct comparison of station pressures difficult? - ✔✔Weather stations are
often at different altitudes
You're flying in Europe and the altimeter setting is reported as 988mb. What is the
altimeter setting in inches Hg? Recall 1013.2mb ~ 29.92 "Hg - ✔✔29.17"Hg
Altimeter setting and sea level pressure (SLP) both provide estimates of the pressure at
a station if that station were lowered all the way to mean sea level? - ✔✔True
Altimeter setting and sea level pressure (SLP) are calculated the same way and provide
the same value, just in different units (inches mercury versus millibars). - ✔✔False
The aneroid barometer at your station reads 27.57"Hg. If the station elevation is 2,000ft,
what is the altimeter setting?
(image 1) - ✔✔29.65" Hg
For the same station as above, what is the altimeter setting if your station pressure is
27.32"Hg?
(image 1) - ✔✔29.38" Hg
At what Pressure Altitude (PA) does 27.32"Hg occur?
(image 2) - ✔✔2,500 ft MSL
COPYRIGHT © 2025 BY BRITTIE DONALD, ALL RIGHTS RESERVED 1
,If your station elevation is 1,250ft MSL and your altimeter setting is 30.19"Hg, what is
the pressure altitude at the station (i.e., the surface PA)?
(image 3) - ✔✔1,000 ft MSL
What is the PA conversion factor for question 8, i.e., how much height must you add to
the station elevation to get the surface PA?
(image 3) - ✔✔-250 ft MSL
For the same station as in question 8 and 9, above, what would be the new surface PA if
the altimeter setting was instead being reported as 29.65 "Hg?
(image 3) - ✔✔1,500 ft MSL
For the same station as in question 8 and 9, above, what would be the new surface PA if
the altimeter setting was instead being reported as 29.65 "Hg?
(image 3)
What is the new PA conversion factor for the above question? - ✔✔+250 ft MSL
In general, as the station pressure falls, what happens to the surface PA? - ✔✔The
surface PA rises
You're flying in Class A airspace (FL180 and above) where PA is always used instead of
true altitude (i.e., your Kollsman window remains set to 29.92"Hg). While descending
you fail to review your checklist and forget to adjust your Kollsman window to the
current altimeter setting of 29.67 "Hg. What will the altimeter read (approximately) at
touchdown if the station elevation of the airport is 865 ft? (Assume 1"Hg = 1,000ft) -
✔✔1,115 ft
COPYRIGHT © 2025 BY BRITTIE DONALD, ALL RIGHTS RESERVED 2
, Using the Standard Conversion Chart, third column (Appendix B in Aviation Weather
Services, Advisory Circular 00-45H, Ch1), what is the pressure altitude of the 505mb
surface? - ✔✔18,000 ft MSL
You're parked on the ramp at your favorite airport. You adjust the Kollsman window
on your pressure altimeter to standard sea-level pressure (29.92"Hg). What altitude
does your pressure altimeter read? - ✔✔Pressure altitude
You're parked on the ramp at your favorite airport. You adjust the Kollsman window
on your pressure altimeter to the current altimeter setting being broadcast on ATIS.
What altitude should your pressure altimeter read? - ✔✔Airport (ramp) elevation
If the Kollsman window on your pressure altimeter is set to 30.15"Hg but the actual
altimeter setting is 29.50"Hg, then your true altitude will be _______ than the indicated
altitude. - ✔✔Lower than
If the Kollsman window on your pressure altimeter is set to 29.90 "Hg but the actual
altimeter setting is 30.40"Hg, then your true altitude will differ from your indicated
altitude by approximately: (Hint: Pressure in the lower troposphere changes about
1000ft per 1"Hg) - ✔✔500 ft
If the Kollsman window on your pressure altimeter is set to 29.90 "Hg but the actual
altimeter setting is 30.40"Hg, then your true altitude will differ from your indicated
altitude by approximately: (Hint: Pressure in the lower troposphere changes about
1000ft per 1"Hg)
500 ft
Will the true altitude be higher or lower than the indicated altitude? - ✔✔Higher
COPYRIGHT © 2025 BY BRITTIE DONALD, ALL RIGHTS RESERVED 3
