Dan’s Extra Questions

Question 1

What is the ICAO normal lapse rate? (Define and state ‘standard’ value)

Answer 1

Rate of Temperature decrease in static air as altitude increases. It is defined as 1.98°C/1000ft assuming ICAO standard atmosphere conditions. (15° and 1013.25 hPa at sea level).

Question 2

What are ICAO normal atmospheric conditions?

Answer 2

1013.25 hPa and 15°C

Question 3

What instruments are required for VFR?

Answer 3

Day
Airspeed Indicator
Altitude in feet
Magnetic Heading
Fuel tank contents
Engine RPMs
Oil pressure
Coolant temp
Oil temp
Manifold pressure (if const speed)
Cylinder head temp (if over 250bhp)
Flap position (if not visible to crew)
Landing gear position (if retractable)
Ammeter / Alternator light
CO detector

At night
Turn/slip indicator
Illumination for instruments

Question 4

Best radio freq to broadcast Pan Pan in South Wairarapa?

Answer 4

124.2 - FISCOM CH INFO

Question 5

Wellinton ATIS radio freq

Answer 5

126.9

Question 6

Wellington Delivery radio freq

Answer 6

128.2

Question 7

Wellington Tower radio freq?

Answer 7

118.8

Question 8

Cook Strait Traffic radio freq?

Answer 8

119.1 - Unattended aerodrome frequency, and used 10 nm surrounding unattended aerodrome

Question 9

South Wairarapa radio freq?

Answer 9

119.1 - Unattended aerodrome frequency, and used 10 nm surrounding unattended aerodrome

Question 10

FISCOM freqs?

Answer 10

West 121.3 CH INFO
East 124.2 CH INFO

Question 11

Best radio freq to broadcast Mayday in Cook Strait?

Answer 11

121.3 - FISCOM CH INFO

Question 12

Hutt Valley Traffic freq?

Answer 12

120.75 - Hutt Valley CFZ

Question 13

Paraparaumu MBZ freq?

Answer 13

118.3

Question 14

Mana CFZ freq?

Answer 14

118.3

Question 15

What is a CFZ?

Answer 15

Common Frequency Zone.

Question 16

What is Pressure Altitude?

Answer 16

Pressure altitude is the altitude indicated at a given location when an altimeter is set to ICAO standard pressure of 1013.25. In low pressure met conditions, it will be higher than the actual altitude of the location, and in high pressure met conditions, it will read lower than the actual altitude.

Question 17

How does air density change according to temperature?

Answer 17

Air density is decreased by ~1% when temperature increases by 3ºC. The same is true when air pressure lowers by 10hPa.

Question 18

How does pressure change according to altitude?

Answer 18

Decrease by ~1 hPa per 30’ increase in elevation under ICAO Standard conditions (1013.25 hPa 15ºC @ MSL)