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Questions and Answers
…Over Three hundred fifty IFR questions and answers in groups of twenty or less;

1. What is the purpose of an FDC NOTAM?
2. To get a visual approach, you must be...
3. What are minimum requirements for a contact approach.
4. What differentiates a visual from a contact approach?
5. What specifics are mentioned as being part of "all available information for IFR flights?
6. Must ATC advise you if a facility is NOTAMed out of service?
7. ATC is required to pass along PIREPS?
8. What pilot response is expected when you are cleared for descent at pilots discretion?
9. What is the significance to the pilot of an ATC directive to do something when able?
10. When are pilot reports required?
11. You must know the weather before shooting a Part 91 approach.
12. When can you log an approach as IFR?
13. Can an FSS provide separation where no tower or approach exists?
14. When is a missed approach procedure not an assumed option?
15. What separation remains with ATC even on a Practice approach?

1. FDC NOTAMs are regulations covering changes in instrument approach procedures and temporary flight restrictions. FDCs must be location specific to DUAT. FDCs within 400 miles are maintained by FSS until published in biweekly Notices to Airmen Publication (NTAP). FDCs are not included in weather briefings unless asked for. (See AIM 5-1-3 for NOTAM contractions)

2. Aircraft on IFR flight plan while airport is VFR, in sight, and traffic to follow also in sight.

3. Aircraft on IFR plan may request contact approach if they are clear of clouds and expect to remain clear of clouds and have one mile flight visibility to the airport.

4. Pilot must request contact approach. ATC can assign visual approach which must have higher weather minimums.

5. A pilot must have weather reports and forecasts, required fuel plus reserves, flight alternatives, known traffic delays, and airport runway lengths.

6. ATC must give you alternative routes and may tell you why this is required. Ask.

7. ATC is required to pass pertinent flight information, including PIREPS but it doesn’t always happen.

8. A pilot should always report leaving last assigned altitude.

9. Any clearance or direction by ATC for the pilot to perform something when able, means just that. The performance is entirely at the pilot’s determination of "able".

10. Pilot reports are required in the event of equipment failure, leaving an assigned altitude, departing a holding pattern, making a missed approach and FAF.

11. Not required for Part 91 to know or have weather. Take a look is

authorized. Better have landing visibility minimums if you land.

12. If any part of the approach is flown in IFR conditions the entire approach can be logged as an IFR approach.

13. It is unlikely that an FSS will give more than relayed clearances, releases, possible reported traffic, and weather.

14. The missed approach may not be flown on VFR or Practice approaches

unless specifically requested and approved by ATC.

15. ATC is always responsible for runway separation and all ground separation.

1. What is the course width of an ILS localizer?
2. What is the course width of a localizer-type directional aid(LDA)?
3. What is the course width of a simplified directional facility (SDF)?
4. What is the course width of a glideslope?
5. What is the standard useable distance for using a glideslope?
6. What is the standard useable distance for a localizer?
7. The middle marker is how far from the runway?
8. The marker light that flashes on a back course is what color?
9. On an ILS approach the white light indicates what marker?
10. On an ILS approach the color of the light over the middle marker is?
11. The standard MDA with of the localizer back course is?
12. When is it acceptable to descend 50' below DH? (FAR 91.175)
13. Can you descend into ground fog from clear conditions to below DH?
14. What are the three conditions that allow descent below DH?
15. What does "Cleared for the approach" mean?
16. What is the controlling visibility for Part 91 operations?
17. When can a pilot change from an ILS to a Localizer approach.
18. Is a Part 91 pilot required to abide by an IFR departure procedure?
19. Do monitors shut down defective glide slopes?

1. ILS course width is 3-6 degrees full width to give 700' at runway threshold. (AIM 1-10(b)(2))

2. Same as ILS above. (AIM 1-10 (c)(1))

3. Simplified Directional Facility (SDF) is 6-12 degrees adjusted for safest operation. (AIM 1-11 (f))

4. 1.4 degrees vertical width. (AIM 1-10 (d) (3))

5. Standard glideslope distance is 10 nautical miles. (AIM 1-10 (d) (3))

6. Course guidance is 18 nautical miles up to 4500' above antenna and 1000' above course terrain. (AIM 1-10 (B)(5))

7. Middle marker is 3500' from threshold.

8. Back course marker is white.

9. On the ILS a white marker indicates the inner marker. (obsolete)

10. The middle marker light is amber.

11. The back course localizer at the threshold is 400' MDA standard.

12. According to the FAA, "Never".

13. No

14. 1) Ability to execute normal landing; 2) Visibility not less than charted; 3) Required visual runway references (10 of them) (91.175)

1. Approach lights

2. threshold

3. Threshold markings

4. Threshold lights

5. End identifier lights

6. Visual approach slope indicator

7. Touchdown zone or markings

8. Touchdown zone lights

9. Runway or runway markings

10. Runway lights

15. Fly the approach as charted at charted altitudes or higher

16. Part 91 operations are controlled by flight visibility as determined by the pilot.

17. A pilot can change from ILS to Localizer any time before descent to localizer minimums. An additional ATC clearance is not required.

18. A Part 91 pilot need only to abide by the procedure that is in the ATC clearance.

19. Old ones did but no longer. You must check flags.


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