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Questions tagged [non-precision-approach]

Non-precision approaches are instrument approach procedures (iaps) that do not include vertical guidance.

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2answers
97 views

How to interpret/use “Fix Minimums” (at KALB)

This one stumped both myself and my CFI. Im specifically asking about the minimums at KALB IL/LOC 19 but a general answer is also appreciated. The plate lists two distinct sets of minimums and we ...
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0answers
71 views

When to turn during missed approach when MAP not identifyable

Not a duplicate of When to go missed on a non-precision approach? please read carefully before duplicating this contains some subtle points. Reposting after clarifications that emphasise this is a ...
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3answers
280 views

When do I execute a missed approach on a LOC approach when I can't identify the MAP?

According to AIM 5.4.21(b): When an early missed approach is executed [...] fly the IAP as specified on the approach plate to the MAP at or above the MDA or DH before executing a turning ...
1
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1answer
200 views

What are the specific side step minimums for an approach?

This question piques my curiosity a bit on this subject. In regards to circling approaches the AIM 5-4-19 states that a. ATC may authorize a standard instrument approach procedure which serves ...
1
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4answers
839 views

What is the maximum rate of descent in an instrument approach?

What is the maximum rate of descent approved in an instrument approach procedure non-precision? Basically what is the maximum rate of descent (Fpm) that I use during the approach?
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1answer
217 views

What's a stepdown fix in a non-precision approach procedure?

Could someone explain to me what's a stepdown fix in non-precision approaches?
4
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2answers
197 views

Does having lead-in lights in sight allow descent below MDA?

Does having lead-in lights in-site during an approach that includes them allow for a pilot to descend to 100 feet above the touchdown zone elevation? 14 CFR 91.175 allows a pilot to make such a ...
3
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2answers
249 views

Was it ever possible to land big commercial jets from the missed approach point during non-precision approach?

When you shoot a non-precision approach, you are expected to maintain the MDA until the missed approach point, and if you have the runway in sight before you get there, you may proceed to land on the ...
2
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1answer
243 views

Approach plate does not require DME, but DME used in the published missed?

This approach plate doesn't say "DME REQUIRED", but the published missed approach uses DME. Can I still fly it without DME equipment? If this approach didn't say "RADAR REQUIRED", could you fly it ...
3
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4answers
428 views

Does a Tower controller need to see an aircraft on final to give landing clearance?

If there is an IFR aircraft on approach that has already received an approach clearance, and he reports being at the final approach fix but the controller does not have him in sight yet, can the ...
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2answers
797 views

How to fly LOC approach when IAF is a specific DME from LOC, but LOC has no DME?

I was looking at this approach plate and noticed that SNOWL is an initial approach fix, and that it's charted to be 6.4 NM from the localizer ...
6
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1answer
2k views

When to go missed on a non-precision approach?

I am training to get my instrument rating and I have come across a confusing point. I understand that, when flying a precision approach, you go missed upon reaching the decision height for that ...
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1answer
422 views

What does this A320 FCTM quote about cold weather and non-precision approaches mean? [closed]

Can someone explain this paragraph from the A320 FCTM about minimum temperatures for non-precision approaches? I can't understand it. COLD WEATHER OPERATIONS For all Non Precision Approaches, there ...
7
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1answer
166 views

Were there ever instrument approach procedures utilizing only Four Course Range Navigation?

Looking for information on 4 Course Range instrument approach procedures. I am aware of their navigational use as we developed the airway system, but were they ever used for final approach segment ...
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3answers
400 views

Why is an approach that relies on both LOC and PAPI not considered a precision approach?

I am an aviation layman. I am reading about PAPI lighting system and it seems like it provides vertical guidance, just like the glideslope component of an ILS. Coupled with a LOC, both vertical and ...
1
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1answer
234 views

What are “ground-based navigation systems which provide vertical guidance” and how do they compare to altimeters?

I am a total layman when it comes to aviation but for a school presentation I am trying to understand the reasons why Air Canada 624 crashed while trying to land on runway 05 at Halifax (CYHZ). I have ...
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2answers
2k views

Why do some non-precision approaches have stepdown fixes after the final approach fix?

Some of the non-precision approaches have a stepdown fix after the final approach fix. My understanding of a stepdown fix with an altitude restriction is that it is to keep you clear of obstacles ...
9
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2answers
6k views

Can a pilot use their GPS/FMS to fly a VOR or NDB approach?

GPS is more accurate than a VOR or NDB signal. Can we use a GPS to fly a VOR or NDB approach from the initial approach fix through the missed approach and hold? I know there are two types of ...
5
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1answer
676 views

Why is a straight-in approach not allowed to RWY 07 at Cluj (LRCL)?

Here's a VOR approach for runway 07 at Cluj (LRCL). On the lower left side of the chart you will see the "Straight-in" OCA(H) as N/A and then a "Circling" OCA(H) of 2540 (for category C). There is ...
6
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2answers
635 views

If DME is required, why have non-DME minima?

I was looking at the ILS or LOC RWY 9 at KJZI today and I noticed that it had lower minima for when you can identify an intermediate fix (YOCUB). That made sense, but the entire approach requires DME....
4
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1answer
557 views

When an alternate minimum applies, does it change MDA or DA?

In US, the weather minimums for an alternate airport are typically 600-2 for precision approaches and 800-2 for non-precision approaches at ETA, unless otherwise specified at US Terminal Procedure ...
14
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4answers
1k views

Can I circle to a different runway if cleared for an instrument approach without circling minimums?

Tom is flying a C172S/G on ILS RWY 31 approach to KSNS. He just established on the localizer at 6000, from the SNS-22 DME Arc. He obtained weather from ATIS, wind 240@20G23, ceiling OVC006, visibility ...
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4answers
9k views

Why is radar required on some FAA instrument approaches?

The ILS / LOC approach at KCXY states radar is required. I understand I can't fly the approach if not in radar contact. However, if flying the LOC approach I think I can identify both final and HORVI (...
6
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1answer
5k views

How to determine the MAP for an RNAV MDA approach?

On this RNAV approach plate, what is the missed approach point for the LNAV MDA approach? How do you arrive at this answer?
6
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1answer
324 views

Conducting a Precision Approach on a Non-Precision Runway - What are my limitations?

Let's take ILS, for example. As stated in the FARs, the minimum RVR for a CAT I ILS approach would be 2400ft (1/2 SM) for a runway that does not have TDZ and Centerline Lighting. So, that is one ...
4
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2answers
298 views

KIBM RNAV (GPS) 10 — did I find a charting error, or what is the TERPS rationale for this?

I was looking at the RNAV (GPS) approach to runway 10 at Kimball, NE (KIBM): and was left wondering "How on earth could the straight-in visibility minima for approach categories C and D be lower than ...
15
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4answers
15k views

Is LPV considered a precision approach?

WAAS LPV approaches can have decision altitudes as low as 200 AGL, the same as many Cat I ILS approaches. Previous opinions on the Internet have quoted the FAA as saying LPV is considered a non-...
7
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1answer
389 views

Why is there a difference between the procedural track heading and final approach course at Fort Hood (KGRK)?

Looking at the NDB RWY 15 into Fort Hood/Killeen, why is the procedural track from OKEST showing a heading of 151 degrees when the final approach course heading is 150 degrees. Is that simply a typo? ...
14
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1answer
844 views

Do instrument approach procedures sometimes have a minimum temperature?

Non-precision instrument approaches generally have altitude restrictions which get lower when you get closer to the airport. I always figured these restrictions were AMSL using the current altimeter ...
12
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3answers
7k views

When flying a circling approach, is it permitted to begin the visual circling segment prior to the final approach fix?

If it were a beautiful sunny VFR day and you were cleared for a circling approach, can you begin the circle prior to the final approach fix/circling DH in order to maneuver visually to land? Here are ...
10
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2answers
19k views

How to calculate the vertical profile for a LOC only approach?

I am kind of stuck for calculating a descent path on the ILS RWY 7 approach into KORL. Assuming the glide slope is not available and you have to use the localizer only, what is the best way to ...