You have just been cleared for takeoff by the tower at a controlled airport. The tower then transmits, 'N123AB, contact departure on one two four point eight five.' You read back, 'Departure, one two four point eight five, N123AB,' and the tower responds, 'N123AB, roger.' What is the next action required?

You have tuned to the ATIS frequency at your destination airport and hear the following: 'Centerville Airport information Delta observed at 1800 Zulu, wind 120 degrees at 10 knots gusting to 18, visibility 8 statute miles, sky condition scattered clouds at 4,000 feet, temperature 22 degrees Celsius, dew point 16 degrees Celsius, altimeter 30.12. Landing runway 27, expect ILS approach. Advise ground control on initial contact you have information Delta.' What is the altimeter setting to set prior to landing?

You are flying VFR toward a Class D airport with an operational control tower. While checking your avionics, you realize your communication radio is inadvertently tuned to 121.5 MHz (emergency frequency) instead of the published tower frequency of 118.3 MHz. What is the most effective way to mitigate the risk associated with this situation?

You are flying VFR at 9,500 feet MSL under flight following from Denver ARTCC. Encountering buildups ahead, you request radar vectors around the weather. The controller responds, 'Denver Center does not provide radar vectors below 10,000 feet; contact Denver Approach Control on 119.95.' What is the greatest risk associated with expecting the ARTCC to fulfill this request?