Part 121 Regulations Flashcards
IFR Fuel Supply?
Fly to destination, shoot an approach, proceed to most distant alternate, fly after that for 45 minutes.
Standard Takeoff Minimums?
1 to 2 Engines: 1 SM
More than 2 Engines: 1/2 SM
When are you required to file an alternate?
1-2-3 Rule
1 Hour Before and After ETA
2000 Foot Ceiling
3 SM Visibility
Standard Alternate Weather Minimums
600’ Ceiling and 2 SM Visibility - Precision Approach
800’ Ceiling and 2 SM Visibility - Nonprecision Approach
Oxygen Requirements for Pressurized Aircraft?
Aircraft can descend to 14,000’ within 4 minutes = 30 minutes oxygen required for at least 10% of passengers
Aircraft CANNOT descend to 14,000’ within 4 minutes OR when aircraft flying above FL250 = Oxygen must be available to 10% of passengers for entire flight after cabin depressurization
What does the term “CRM” refer to?
CRM-Crew Resource Management-refers to the effective use of all available resources. Human resources, hardware and information
Transponder code - 7500?
Hijack in progress
Transponder code- 7600?
Lost radio-communications emergency
Transponder code- 7700?
Emergency
What is Clear Ice?
Forms when large rain drops or freezing rain strike the aircraft surface and slowly freeze. THIS IS THE MOST DANGEROUS TYPE OF ICE SINCE IT IS CLEAR, HARD TO SEE, AND CAN CHANGE THE SHAPE OF THE AIRFOIL.
What is Rime Ice?
Small drops strike the aircraft and freeze immediately on contact with the aircraft surface. This type of ice usually forms on areas such as the leading edges of wings or struts, has a somewhat rough-looking appearance and a milky white color.
What is mixed ice?
A mixture of clear and rime ice. it has the bad characteristics of both types and can form rapidly. Ice particles become embedded in clear ice, building a very rough accumulation.
What is frost?
Ice crystal deposits formed by sublimation when the temperature at the surface is below the dew point, and the dew point is below freezing.
