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► According to the chart the minimum obstruction clearance altitude (MOCA) is 8500ft. The meteorological data gives an outside air temperature of -20°C at FL 85. The QNH, given by a met. station at an elevation of 4000ft, is 1003 hPa. What is the minimum pressure altitude which should be flown according to the given MOCA?
A) 8500 ft
B) 8800 ft
C) 12800 ft
D) 8200 ft
Convert altitude into pressure altitude (FL):
Difference between QNH and 1013 = 10hPa
10hPa x 30ft/hPa = 300ft
1013hpa level lies lower than the 1003Hpa level so Pressure altitude is bigger:
8500 + 300 = 8800ft
► An airway is marked 3500T 2100a. This indicates that:
Answer: The minimum obstruction clearance altitude (MOCA) is 3.500ft
► On IFR navigation chart, in a 1° quadrant of longitude and latitude, appears the following information: "80". This means that within this quadrant:
Answer: The minimum safe altitude is 8.000ft
► An airway is marked FL80 1500a . This indicates that:
Answer: The minimum enroute altitude (MEA) is FL80
► An airway is marked 5000 2900a . The notation 5000 is the:
Answer: minimum enroute altitude (MEA)
► An appropriate flight level for IFR flight in accordance with semi-circular height rules on a course of 180° (M) is:
A) FL100
B) FL90
C) FL95
D) FL105
000° to 179° = EAST (UNEVEN)
180° to 359° = WEST (EVEN)
We therefore select an even flight level (and we are IFR so no extra 500ft is added).
Only answer correct = FL 100
► An appropriate ICAO non-RVSM flight level for IFR flight in accordance with semi-circular height rules on a magnetic course of 200° is:
A) FL320
B) FL310
C) FL290
D) FL300
The important factor here is that the Question states 'non-RVSM'. RVSM basically means that a separation of 1000ft (like we had up until FL290) is kept until FL410 and from then on it goes to 2000ft separation.
Because we don't have RVSM according to the Question, we are flying above FL290 with 2000ft separation. The problem with this is that if we have 2000ft separation from FL290 we would never get a even flight level (290 / 310 / 330 / 350 / ... ), that is why the rule states that above FL290 (which is uneven), the flight levels will be on turn even and uneven (290(UE) / 310(E) / 330(UE) / 350(E) / ... ).
Our magnetic course is 200° = West = Even numbers
First Even flight level we see is FL310 (We could only pick answer D FL300 if the Question states RVSM airspace)
► An appropriate flight level for IFR flight in accordance with semi-circular height rules on a course of 360° (M) is:
A) FL200
B) FL210
C) FL220
D) FL240
360° falls in the EAST sector (000° to 179°) so we pick an uneven flight level. All the other answers are even flight levels!
► An IFR flight is planned outside airways on a course of 235° magnetic. The minimum safe altitude is 7800ft. Knowing the QNH is 995 hPa and temperature ISA, the minimum flight level you must fly is:
A) 80
B) 90
C) 85
D) 100
Convert the altitude into pressure altitude (flight level):
Difference in Hpa (QNH & 1013) = 18hPa
18hPa x 30ft/hPa = 540ft
QNH lies higher than 1013hPa so pressure altitude is bigger = 7800 + 540 = 8340ft
Now look at the possible answers. C is incorrect because of the extra 500ft (we are not a VFR flight!). A is incorrect because it is too low. B is incorrect because we need an EVEN flight level (235° falls in west sector)
A) 8500 ft
B) 8800 ft
C) 12800 ft
D) 8200 ft
Convert altitude into pressure altitude (FL):
Difference between QNH and 1013 = 10hPa
10hPa x 30ft/hPa = 300ft
1013hpa level lies lower than the 1003Hpa level so Pressure altitude is bigger:
8500 + 300 = 8800ft
► An airway is marked 3500T 2100a. This indicates that:
Answer: The minimum obstruction clearance altitude (MOCA) is 3.500ft
► On IFR navigation chart, in a 1° quadrant of longitude and latitude, appears the following information: "80". This means that within this quadrant:
Answer: The minimum safe altitude is 8.000ft
► An airway is marked FL80 1500a . This indicates that:
Answer: The minimum enroute altitude (MEA) is FL80
► An airway is marked 5000 2900a . The notation 5000 is the:
Answer: minimum enroute altitude (MEA)
► An appropriate flight level for IFR flight in accordance with semi-circular height rules on a course of 180° (M) is:
A) FL100
B) FL90
C) FL95
D) FL105
000° to 179° = EAST (UNEVEN)
180° to 359° = WEST (EVEN)
We therefore select an even flight level (and we are IFR so no extra 500ft is added).
Only answer correct = FL 100
► An appropriate ICAO non-RVSM flight level for IFR flight in accordance with semi-circular height rules on a magnetic course of 200° is:
A) FL320
B) FL310
C) FL290
D) FL300
The important factor here is that the Question states 'non-RVSM'. RVSM basically means that a separation of 1000ft (like we had up until FL290) is kept until FL410 and from then on it goes to 2000ft separation.
Because we don't have RVSM according to the Question, we are flying above FL290 with 2000ft separation. The problem with this is that if we have 2000ft separation from FL290 we would never get a even flight level (290 / 310 / 330 / 350 / ... ), that is why the rule states that above FL290 (which is uneven), the flight levels will be on turn even and uneven (290(UE) / 310(E) / 330(UE) / 350(E) / ... ).
Our magnetic course is 200° = West = Even numbers
First Even flight level we see is FL310 (We could only pick answer D FL300 if the Question states RVSM airspace)
► An appropriate flight level for IFR flight in accordance with semi-circular height rules on a course of 360° (M) is:
A) FL200
B) FL210
C) FL220
D) FL240
360° falls in the EAST sector (000° to 179°) so we pick an uneven flight level. All the other answers are even flight levels!
► An IFR flight is planned outside airways on a course of 235° magnetic. The minimum safe altitude is 7800ft. Knowing the QNH is 995 hPa and temperature ISA, the minimum flight level you must fly is:
A) 80
B) 90
C) 85
D) 100
Convert the altitude into pressure altitude (flight level):
Difference in Hpa (QNH & 1013) = 18hPa
18hPa x 30ft/hPa = 540ft
QNH lies higher than 1013hPa so pressure altitude is bigger = 7800 + 540 = 8340ft
Now look at the possible answers. C is incorrect because of the extra 500ft (we are not a VFR flight!). A is incorrect because it is too low. B is incorrect because we need an EVEN flight level (235° falls in west sector)
