CPC Separation Standards & Traffic Flow Management 1 — Questions and Answers
Question 1: What is the standard vertical separation minimum between aircraft operating in Class A airspace below FL290?
- 500 feet
- 1,000 feet (Correct answer)
- 2,000 feet
- 3,000 feet
Correct answer: 1,000 feet
Standard vertical separation in Class A airspace below FL290 is 1,000 feet between aircraft.
Question 2: Which separation method uses distance-measuring equipment (DME) to maintain spacing between aircraft on the same route?
- Radar separation
- Longitudinal separation (Correct answer)
- Lateral separation
- Visual separation
Correct answer: Longitudinal separation
Longitudinal separation maintains spacing along the same route or track, often using DME or time-based intervals.
Question 3: When two aircraft are converging at approximately the same altitude, the minimum radar separation standard in en route airspace is generally:
- 3 nautical miles
- 5 nautical miles (Correct answer)
- 7 nautical miles
- 10 nautical miles
Correct answer: 5 nautical miles
The standard en route radar separation minimum is 5 nautical miles between aircraft at the same altitude.
Question 4: Traffic Flow Management (TFM) programs such as Ground Delay Programs (GDPs) are primarily used to:
- Increase aircraft speed to reduce fuel burn
- Absorb en route delays at the destination airport (Correct answer)
- Assign new routes to avoid convective weather
- Reduce controller workload at departure airports
Correct answer: Absorb en route delays at the destination airport
GDPs delay aircraft on the ground at origin airports so they arrive at the destination airport at a manageable rate, absorbing anticipated arrival delays.
Question 5: The EDCT (Expect Departure Clearance Time) issued during a GDP represents:
- The time the aircraft must land at the destination
- The estimated time the flight will reach cruise altitude
- The window in which the aircraft is expected to depart the origin airport (Correct answer)
- The time the pilot should call ATIS before pushback
Correct answer: The window in which the aircraft is expected to depart the origin airport
An EDCT is a time window assigned to a flight during a GDP specifying when the aircraft is expected to depart its origin airport.
Question 6: Wake turbulence separation is primarily based on which characteristic of the leading aircraft?
- Speed
- Altitude
- Weight category (Correct answer)
- Engine type
Correct answer: Weight category
Wake turbulence separation requirements are determined by the weight category (Heavy, Large, Small) of the leading aircraft, which correlates to vortex strength.
Question 7: Which of the following best describes the concept of Miles-in-Trail (MIT) restrictions?
- Vertical spacing requirements between aircraft in a stack
- Lateral spacing requirements for parallel runway operations
- Longitudinal spacing requirements between successive aircraft on a common route or fix (Correct answer)
- Minimum radar contact distances for approach controllers
Correct answer: Longitudinal spacing requirements between successive aircraft on a common route or fix
Miles-in-Trail restrictions require a specified number of nautical miles of longitudinal spacing between successive aircraft on the same route or passing a common fix.
CPC Separation Standards & Traffic Flow Management 1
What is the standard vertical separation minimum between aircraft operating in Class A airspace below FL290?