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2answers
53 views

What does LNAV engagement exactly mean?

I notice the term LNAV engagement being frequently mentioned in aviation related discussions or in several FAA's relevant material. Take, for example, this quote from Order 8260.58A (PBN Instrument ...
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2answers
109 views

Is there an issue with an acceleration followed by a deceleration when flying a SID?

Sometimes I see SIDs with a long straight climb segment (say 10 nm), followed by a wide turn with an IAS constraint (e.g. MAX 210 KIAS). Is there any issue in accelerating to 250 KIAS and then ...
3
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1answer
50 views

Under what circumstances can the Initial Climb Area extend more than 2 nautical miles?

While studying of FAA's Instrument Procedures Handbook, I noticed that on page 1-16 (Chapter 1: Departure Procedures) it defines the Initial Climb Area (ICA) as follows: The ICA is the segment of ...
2
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0answers
76 views

Does the “Climbing right turn” instruction of this SID violate the “Climb to 400 feet above DER before turning” requirement?

I was examining the LaGuardia Five SID, and I noticed that for runway 13 (Coney Climb) it gives the instruction, immediately after takeoff, "Climbing right turn heading 180 degrees to intercept CRI R-...
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0answers
43 views

Can I find the minimum IFR altitude based only on a SID plate?

I noticed this question here on aviation stackexchange, and I was wondering if there is a way to deduce the minimum IFR altitude (either 1000ft or 2000ft above obstacles, depending on whether or not ...
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1answer
54 views

What is the type of a SID that is neither RNAV nor RNP?

I am studying FAA's Order 8260.46F and I have noticed that, as far as the different types of SIDs are concerned, it states: [3-5] (1) “RNAV 1” will be the default designation for RNAV DPs. Annotate ...
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0answers
45 views

Is there an equivalent of the Threshold Crossing Height for departure procedures?

The definition for the Threshold Crossing Height is, according to the sources that I have checked, "the theoretical height above the runway threshold at which the aircraft's glideslope antenna would ...
6
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1answer
128 views

What does the indication “ATC” in some Take-Off Minimums mean?

While studying FAA's Standard Instrument Departure Procedures, I came across the La Guardia Five Departure SID. Take, for example, the Take-Off Minimums for runway 13L: Rwy 13 (Coney Climb): 400-2 ...
6
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1answer
745 views

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 ...
2
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0answers
59 views

Why is there a need for a Top Altitude in FAA's SIDs?

I am examining some of the FAA's SID charts and, as far as I can deduce, each SID provides information concerning the altitude when it is necessary and, if not changed by the controller, each ...
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0answers
17 views

Is FAA's Order 8260.58A complementary to the TERPS manual as far as SID design is concerned?

I am studying FAA's United States Standard for Terminal Instrument Procedures (TERPS) to learn how a SID is designed and what kind of rules and constraints one has to take into consideration. I am ...
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0answers
11 views

How to determine RNP and XTT values from section “5-2-1 Straight Departure” of FAA's 8260.58A Order?

I am trying to understand how to determine the Obstruction Clearance Area for each leg of a SID route. I am currently studying the US Standard for PBN Instrument Procedure Design (Order 8260.58A) and, ...
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2answers
130 views

Is it legal for a non-IFR rated pilot to fly a SID on a VFR flight?

Just wondering in case the pilot is unfamiliar with the airport / terrain or is flying at night and wants obstacle / terrain separation.
3
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2answers
285 views

How can a SID's MEA be above its top altitude?

The SID below has a Top Altitude of 5000 feet, but its Minimum Enroute Altitude (MEA) is above 5000 feet. Why? I am referring to the SID depicted below, from FAA's SID charts (plate and departure ...
3
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1answer
197 views

How to interpret the term “standard” which is found in FAA's Obstacle Departure Procedures (ODP) and Standard Instrument Departure Procedures (SID)?

This might be obvious, but I find it difficult to interpret correctly the term "standard", when it refers to the takeoff phase of the flight. Take, for example, the takeoff minimums for the La ...
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0answers
77 views

Different takeoff minimums between an Obstacle Departure Procedure (ODP) and a Standard Instrument Departure Procedure (SID)

It seems reasonable to me that an Obstacle Departure Procedure would include more "strict" rules (steeper climb gradient) than a SID, which is more "situational" and provides a specific direction in ...
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1answer
86 views

Need help to clarify the terms “arrival”, “departure”, “approach”, “terminal” and “transition” fix for US STAR and SIDS

I find it a bit difficult to clarify, while consulting the US published STAR and SID published charts, which fixes are designated as arrival, departure, approach, terminal and transition. Could ...
3
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2answers
141 views

How should I interpret this raw SID data from the FAA?

I am trying to make sense of the SID structures from the FAA's 28 day NASR subscription files (SSD and/or STARDP, raw data in txt files), and I have two questions. First, I notice that there are ...
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1answer
170 views

How to select a SID during the planning stage?

During the planning stage of an IFR flight how to choose the correct SID for your route in an airport with multiple runways and multiple SIDs? and how to predict the runway you will be going to use?
7
votes
4answers
1k views

Are planes assigned different climb angles from the airport by the tower?

Clearly the angle at which planes take off and climb depends on lots of things (mountains, residential area, aircraft type, wind) but when watching planes take off after another from the same runway, ...
4
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1answer
326 views

What are IFR departure categories?

I'm looking at the takeoff mins and DPs for Reno/Stead (RTS.) It lists takeoff mins for Cat A and B, Cat C and D NA: TAKEOFF MINIMUMS: CAT A,B only, CAT C,D NA. Rwys 8,14, 1300-2 or std. with a ...
1
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1answer
618 views

If you file a flightplan with “NO SID”, can you still get assigned a graphical ODP in your clearance?

Recently, the FAA has been moving to migrate Obstacle Departure Procedures from the textual form they are in in the A/FD Departure Procedures section to use the same graphical/charted format that SIDs ...
3
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1answer
346 views

Do GA IFR flights out of airports w/ SIDs typically use them? What about STARs?

Besides the IAPs (which as an IFR flight you're guaranteed to use unless cleared for the visual), there are the STARs and SIDs, and using them in slow GA aircraft doesn't fully make sense to me. For ...
5
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1answer
357 views

What Does “By ATC” Mean for an SID Route?

I can understand that altitudes may be "by ATC", but why can a route also be marked with "by ATC"? All SID routes need prior clearance by ATC, right? For example, in SID RWY 16 for ZGSZ/SZX, MEPOG-7X ...
5
votes
1answer
640 views

DP confusion. Do I turn left or right if not told?

Please take a look at the MIA5 depatarture from KOPF: MIA5 Page 1 MIA5 Page 2 The instructions seem in conflict. Specifically, suppose you are taking off RW 270R and want the WINCO transition. The ...
8
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2answers
1k views

Can I accept a SID if I can't make the required climb gradient on a single engine but have no problem on two engines?

Can I accept a clearance containing a Standard Instrument Departure (SID) with a climb gradient that I can easily make on all my engines but can't make the required gradient on one engine inoperative? ...