Questions tagged [terps]
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23 questions
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Does an approach require an initial approach phase?
I'm designing a VOR approach for a fictional airport in a video game. I've been studying TERPS to help me make the procedure, and I just was curious if an approach necesarilly needed an initial ...
- 293
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Approach Category NA and Takeoff Minimums NA
For the approach RNAV 18 at 09J (Jekyll Island), the aircraft approach categories C and D are NA - Not Available. Why is this? Is this because of the assessment - circling, runway, etc.
Additionally, ...
- 153
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Is the arrival segment of an IAP in PANS-OPS the equivalent of FAA's feeder route?
In ICAO's manual 8168 ("Aircraft Operations"), the term "Feeder route" is never mentioned. Instead, it states:
8168 Volume II, "Approach Procedures": 1.2.3. Segments of the approach procedure. An ...
- 1,873
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Is airport's magnetic variation value used for terminal procedure design?
I am studying how instrument flight procedures are coded to ARINC-424 format, and since I was curious about the method used to determine the outbound/inbound magnetic courses, I checked the section ...
- 1,873
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59
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Does a Navigation Specification characterize all legs of a terminal procedure?
I am studying the different parts of Instrument Flight Procedures, as they are described by FAA's manuals, such as the Aeronautical Information Manual, TERPS and Performance Based Navigation. For ...
- 1,873
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4
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3k
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Why are there no RNAV (ILS) approaches?
While studying the PBN (FAA Order 8260.58A) and TERPS (FAA order 8260.3D) documents, I still have some trouble figuring part of the logic behind the naming and definitions of the published IAP Charts. ...
- 1,873
2
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1
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562
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How much difference in heading/bearing between consecutive legs is "officially" considered a turn?
While examining FAA's TERPS manual (Order 8260.3D) and PBN manual (Order 8260.58A), I noticed two seemingly contradictory statements.
TERPS 8260.3D Chapter 14. Departure Routes, 14-3-4 . Construct ...
- 1,873
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What are early/inside and late/outside turns (see, e.g., PBN Manual Order 8260.58A) and when do pilots perform them?
While studying FAA's PBN Manual (Order 8260.58A), I came across the concept of early/inside and late/outside turn construction (Section 5-3. Turning Departures).
For each of the possible cases, it ...
- 1,873
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1k
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Why does obstacle clearance area splay outward instead of being a rectangle?
I am having trouble figuring out the logic behind the way that obstacle clearance areas are constructed. Take, for example, a departure procedure where Initial Climb Area is defined in TERPS (section ...
- 1,873
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3
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924
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PA/APV Glidepath Descent and Obstacle Clearance Slope's lowest point determination
I am studying the US Terminal Instrument Procedures manual (TERPS) and as I was skimming through the guidelines about Sloping Obstacle Clearance Surface, I came across the image below from section 2-1-...
- 1,873
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What does the instruction "Climb heading [BEARING] to [NAVAID] 2.5 DME" mean?
I am examining FAA's Standard Instrument Departure Procedures (SIDs) and while reading their textual description, I came across this instruction from
LGA's La Guardia Five Departure SID, for Runway ...
- 1,873
5
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1
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742
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Why are the minima for Cat A higher than for other categories at KSEA ILS 16L?
I was looking at the KSEA ILS 16L approach (depicted below) and was wondering just why the minima are bumped up for Cat A aircraft (64 feet on both DA and HAT, as well as 200 feet of RVR). Thing is, ...
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2
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2k
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Why would an approach be Cat A NA?
I was looking at the RNAV (RNP) 6 approach into Gunnison (KGUC) and noticed something quite strange:
If the image isn't clear enough -- the approach is Not Authorized for approach category A aircraft (...
8
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1
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715
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Which US airport has the lowest circling MDH?
As I recently contemplated 14 CFR 135.223 and its implications, I began wondering about airports with exceptionally low circling minima.
For a little context and background, the part of §135.223 that ...
- 16.7k
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5
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On a procedure turn, do you make the turn on the inside or outside of the procedure turn?
When flying a procedure turn like the one shown below, the first step is to fly outbound 039 degrees. When you turn inbound to 219 degrees, do you make that turn to the left or to the right? The left ...
- 3,899