Questions tagged [non-precision-approach]
Non-precision approaches are instrument approach procedures (IAPs) that do not include vertical guidance.
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Why did autopilot switch to CWS P on a LNAV/VNAV approach, and why didn't it reduce descent rate to comply with CDU alts when VNAV was re-engaged?
We were performing an NDB approach the other day due to the ILS being unserviceable.
We are flying a 737-800, FMC Update 14.0 (“common VNAV”)
We were using LNAV and VNAV as our roll and pitch modes ...
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Can you fly a VFR practice approach at night that is Notam’ed “NA at night”?
To frame the question more specifically, at KCSV the ILS Z 26 approach is NOTAMed “NA at night”. So is it legal to fly the approach VFR for training purposes to satisfy aeronautical experience ...
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What is the difference between CANPA and CDFA?
What is the difference between Constant Angle Non-Precision Approach (CANPA) and continuous descent final approach (CDFA)?
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Can a CDFA approach be carried out if there is no final approach fix?
Is it possible to carry out a CDFA approach if there is no defined final approach fix mentioned on the instrument approach chart?
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Crossing mid-field on a circling approach
During a circling approach, can I cross midfield to enter the pattern or do I have to literally fly around the airfield to get into the pattern? I know its an odd question, but my airfield has an RP ...
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Why don't the Altitude-DME values in the approach profile match the Groundspeed-FPM values in the conversion table?
Why don't the Altitude-DME values in the approach profile match the Groundspeed-FPM values in the conversion table?
When the calculation is made with the values given in the conversion table, the ...
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What are "CIRCLING CATS"?
A NOTAM at Pensacola International Airport (KPNS) uses the phrase "CIRCLING CATS". What does this phrase mean?
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Why is there no final approach fix symbol on some of the Jeppesen VOR charts? (Maltese Cross Symbol)
Why is there no final approach fix symbol on some of the Jeppesen VOR charts? (Maltese Cross Symbol) What does the box marked with a red arrow mean when there is no FAF symbol and how is it defined? ...
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Why are there no straight-in landing minimums (only circle-to-land) for this VOR approach at Adana?
When we examine the "VOR A" Jeppesen chart on LTAF airport page 23-4, we see that there are only circle-to-land minimums in the minimums section. When I researched the reasons for using ...
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Why is there no Maltese Cross in this non-precision approach's profile view which has a FAF?
I am wondering why this chart does not show the FAF with a maltese cross as it is used in non-precision approaches to depict FAF.
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Why was Air India flight 101 in 2018 cleared for the ILS at EWR?
On Sep. 11, 2018, Air India Flight 101 was flying from Delhi to JFK. On approach they had multiple failures including two of the radar altimeters and the localizer receiver. They decided to do an LNAV/...
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Where can I find details about necessary system accuracy, integrity etc of a conventional navigation aid?
I am wondering where (probably in which ICAO document) can I find information about the required accuracy, integrity etc. for a conventional navigation aid for non-precision and precision approaches (...
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Why is this Instrument Approach NA for certain radials, yet it depicts a feeder route for those radials?
The RNAV (GPS) 28 at Tampa Intl (KTPA) says
Procedure NA for arrivals on PIE VORTAC radials 356 CW 157
That seems to mean the approach is not available for anyone generally northeast of the PIE ...
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Can Instrument Approaches be carried out when RVR is not given for the full runway length? (Approach Ban)
Bristol Airport (EGGD) has the following NOTAM in place:
INSTRUMENTED RVR RWY 27 STOPEND OUT OF SERVICE
Would aircraft be allowed to continue approaches into Bristol? If so, would the touchdown and ...
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In the B737, does an IAN NPA require that the G/P is 3° or can the G/P angle vary?
For an IAN Approach to be recognized and work in a Boeing 737, does the Approach G/P need to be exactly 3° or can it vary?
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Is this an accurate method to showing how the correct Decision Altitude/Height for an approach has been determined?
Here's my method of summarising how the decision altitude/height for an approach was determined:
...
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When not cleared straight in for a VOR approach, how is this type of procedure executed?
You are flying to the GDM VOR on a 097 heading. The ATC clears you for the approach, but does not specify straight in. The procedure turn is marked by the barb and specifies remaining within 10nm. My ...
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What is the difference between ILS and VOR/DME?
I have wondered many times about the difference between VOR/DME and ILS and which one is better for carrying out approaches. Why do pilots use VOR/DME when the ILS is a better option because it is ...
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What if you approach the VOR station such that your turn OB is not on the holding side?
I'm reviewing the Sporty's ground school for VOR approaches, and their example shows the approach to the VOR station then heading OB as tracking on the holding side. What if you approach the VOR ...
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Why is there no Maltese Cross in this non-precision approach chart which has a FAF?
I am wondering why this chart does not show the FAF with a maltese cross as it is used in non-precision approaches to depict FAF.
The chart’s briefing strip refers to D6.0 as the FAF and on the plan ...
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Does the A320's FMC automatically adjust the rate of descent on a non-precision approach?
Does the A320's FMC automatically adjust the rate of descent on a non-precision approach? Like a back course approach for example if the distance to altitude is (or can be) programmed in?
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How can I find examples of airports with specific approach types?
Can you guys help me find airports with these approaches:
An airport with only an LNAV mins (so no LNAV/VNAV or anything other than just LNAV)
One with an LPV lower than 200 feet
One with an ASR ...
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How to determine when a non precision approach does or doesn't have a Final Approach Fix (FAF)?
I am curious to know how to know for sure whether a non precision approach has/doesn't have a final approach fix by looking at its plate. From what I can see, a Break Cloud and/or NDB procedure might ...
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How is the FPA (flight-path-angle) computed?
How is FPA computed by the Auto-pilot to follow the desired FPA? One part is clearly VS, is the other part IAS or Ground speed? Where does Ground speed come from?
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Descending while turning inbound on a non-precision approach
I'm writing my instrument rating examination soon and one of the questions that I came across was:
While executing a VOR A RWY 01 approach for Alexander bay, 2700ft is reached at 8DME on the ...
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According to ICAO, which rules are applicable to SBAS Non-Precision Approach Procedures?
I am studying the Satellite Based Augmentation System (SBAS) from PANS OPS manual 8168, Volume II, sixth edition, and I have a problem concerning the criteria of SBAS-NPA.
In Part III, Section 3, ...
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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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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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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 ...
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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 ...
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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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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?
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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 ...
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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 ...
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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 ...
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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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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 ...
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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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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 ...
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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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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 ...
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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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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 ...
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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 ...
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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 ...
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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....
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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 ...
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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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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 (...
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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?
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