ILS CAT II Ops

Question 1

What are the range and increments of a RVR?

Answer 1

6000 to 3000 : 500ft increments
3000 to 1200 : 200ft increments
1200 to 300 : 100ft increments

Question 2

What is the name of the tool used to measure RVR?

Answer 2

Transmissometer

Question 3

What are the main requirements to conduct a CAT II approach?

Answer 3

• Airport has to be certified
• Operator has to be approved on AOC (special authorization)

Ops spec relies on both aircraft and flight crew certification

Question 4

What is looked after for an airport to be CAT II certified?

Answer 4

• Runway markings
• Runway and approach lighting
• Obstacle clearance requirements

Question 5

What RWY lights are required in CAT II ops?

Answer 5

• Runway edge lights (high intensity)
• Runway threshold lights
• Runway centerline lights
• Approach lights (high intensity)
• TDZ lights

Question 6

Which RWY lights has to be high intensity for CAT II ops?

Answer 6

• RWY edge lights
• Approach lights

Question 7

What is the max inoperative lighting allowance for CAT II?

Answer 7

5% (generally)

Question 8

What are the main reasons for separate ILS CAT II hold short lines?

Answer 8

• For the aircraft waiting on ground not to interfere with ILS signals
• To comply with obstacle clearance requirements in the vicinity of threshold

Question 9

What is the main requirement for ILS CAT II approach on the E175?

Answer 9

Conducting a PMA

Question 10

If the aircraft is temporarily downgraded to CAT I approaches only (for example due to an unserviceable item), how does the crew know it?

Answer 10

• Green CAT II approach sticker removed
• Red NO CATEGORY II placard
• Mention of CAT I only in the OFP (MEL section)

Question 11

What equipment is required for the E175 to conduct CAT II approaches?

Answer 11

List is in the QRH

Items are also indicated with a black X in the MEL

Question 12

Where can the downgrade procedure be found if a required equipment becomes unserviceable?

Answer 12

In the preamble of the MEL

Question 13

What are the crew requirements for conducting an ILS CAT II approach on the E175?

Answer 13

• Specific training for both
• Captain has an assessment on PPC
• Captain must have 300h PIC on turbojet and 100h PIC on type

Question 14

What RWY length requirement must be met to conduct a CAT II approach?

Answer 14

15% more than the normal dispatch factored distance