Skip to main content
24 votes

Why is the missed-approach course for the "RNAV (GNSS) - A" approach to runway 28 at ENSB shaped all funny?

If you look at satellite imagery it looks like you have very high terrain to the west of the runway. The water would be the primary area available for a climb back to obstacle clearance altitude. ...
Alexander G's user avatar
17 votes

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

The only minimums that apply to any approach are those printed on the plate. Doing anything else is being a test pilot. Minimums are charted based on obstacle clearance, descent gradient, distance ...
egid's user avatar
  • 23.3k
17 votes

What is "(CFMCC)" on an ILS approach chart?

A point shown in parentheses like this is called a Computer Navigation Fix (CNF). If it didn't fall right at the end of the runway, it would be marked with a small X. It's defined in the legend on ...
fooot's user avatar
  • 73.4k
13 votes
Accepted

Why is the missed-approach course for the "RNAV (GNSS) - A" approach to runway 28 at ENSB shaped all funny?

As Alexander already said in his answer, the turns over water are executed to gain enough altitude before turning back over the terrain. (left: RNAV-A, right: RNAV approach chart). The difference ...
Bianfable's user avatar
  • 56k
11 votes
Accepted

Why is the missed approach point sometimes beyond the threshold or runway like in the example below?

The missed approach point (MAP) needs to be identified somehow by the pilot flying this approach. The example you show is a VOR approach that requires neither RNAV/RNP capability nor DME. That is also ...
Bianfable's user avatar
  • 56k
10 votes

How can one fly a stabilized approach when the final approach path is curved?

Perhaps my thinking is now considered outmoded (retired in 1999), but for me the definition of a stabilized approach doesn't preclude turning, but only that the turning (when necessary) is ...
Terry's user avatar
  • 39.2k
10 votes

Are there benefits in training instrument students how to fly a DME arc?

Apart from the fact that it is required to learn, the obvious "benefit" is that you know what to do when flying to an airport that uses a DME Arc approach. RNAV/GPS approaches are becoming more common,...
60levelchange's user avatar
10 votes

Is my procedure correct for simulated flight approach using this IAP after complete STAR?

First of all, what you show is not a STAR. There are several STARs at LSZH that end at AMIKI (NEGRA 2A, RILAX 2A, TRA 2A). What happens after AMIKI is the approach transition. There are 3 ways to get ...
Bianfable's user avatar
  • 56k
9 votes
Accepted

Why would an approach be Cat A NA?

Original answer: The speed of Category A aircraft is too low to execute the missed approach. For this particular airport, it's basically a hole in the ground with steep mountains on all sides. To go ...
Jimmy's user avatar
  • 2,859
9 votes

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

Intro This is a bit of an odd situation, but they have a good reason for doing what they did. First of all, each instrument approach is designed to be a stand-alone procedure, and the designers ...
Lnafziger's user avatar
  • 58.9k
9 votes
Accepted

When to go missed on a non-precision approach?

Non precision MAP fixes are identified in a number of ways: Fixes identified by additional terrestrial Navaids eg intersections between the localizer and radial directions from other Navaid beacons ...
Romeo_4808N's user avatar
9 votes

Why is VNAV and LNAV being prohibited with QFE?

When you set your altimeter to the airport or runway QFE value, the altimeter shows your altitude above the airport or runway threshold: (source: SKYbrary - Altimeter Pressure Settings) The altitude ...
Bianfable's user avatar
  • 56k
8 votes
Accepted

What runway alignment should I expect from a straight-in approach?

This is an interesting question because it turns out that RNAV approach criteria aren't defined in the TERPS as you would expect. Instead, there's a separate FAA order 8260.58 for RNAV approaches. ...
Pondlife's user avatar
  • 71.8k
8 votes

Why are the minimums between these two ILS instrument approaches to the same runway so different?

The equipment requirement (in the aircraft) are different for each of these approaches. In the upper-left box of the Z approach, you can see that DME is required to make this approach. This ...
Jimmy's user avatar
  • 2,859
8 votes
Accepted

What RNP level is required for an RNP approach if the chart does not specify a value?

RNP approaches require a minimum value of 0.30, be it LNAV only, LNAV/ VNAV or RNP AR. Most of the approaches around the globe are RNP approaches. So, they do not put in the value because it remains ...
Anas Maaz's user avatar
  • 1,963
8 votes
Accepted

Although there are straight and circling minimums in the VOR Z chart, why separate VOR A chart created containing only the circle-to-land minimum?

The only relevant difference I can see is DME required. for the VOR Z approach. The VOR A does not have such a requirement. This allows aircraft without DME to fly the VOR approach. Note how the ...
Bianfable's user avatar
  • 56k
7 votes
Accepted

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

I cannot speak for all of General Aviation (GA), but throughout the IFR portion of my flying career I have generally used SIDs wherever available. NOTE: This choice of using SIDs was not always mine, ...
J W's user avatar
  • 16.6k
7 votes
Accepted

What is the missed approach procedure when initiated below MDA/DA/DH?

When would you go missed if below MDA/DA(H)? You're only allowed to operate below the MDA/DA(H) if all of the following are true (14 CFR 91.175(c)): You can land using normal descent rate and ...
Pondlife's user avatar
  • 71.8k
7 votes

When can I proceed inbound in a hold in lieu of a procedure turn when cleared for the approach?

You don't need to do a full turn around the holding pattern, you can just cross the IAF and proceed inbound. This is from the AIM 5-4-9(a)(5): The holding pattern maneuver is completed when the ...
Pondlife's user avatar
  • 71.8k
6 votes

ILS Approach, when can you descend on the glide path?

You’re making this more complicated than it needs to be. Once you are cleared for an approach and established on any segment of that approach, then you may descend to the altitude published for that ...
StephenS's user avatar
  • 27.7k
6 votes
Accepted

Is my procedure correct for simulated flight approach using this IAP after complete STAR?

I think the procedure envisions a teardrop entry into the holding pattern at KLO to reverse your course and get back to KLO in a position that you can commence the procedure track to the east. So, the ...
Ralph J's user avatar
  • 51.8k
6 votes

What is the difference between DH and RA in Jeppesen charts?

This entry is defined in the Jeppesen Charts Legend as follows: The difference between radio altimeter (RA) and decision height (DH) is the different baseline. The radio altimeter will measure height ...
Bianfable's user avatar
  • 56k
5 votes

How do you determine whether you can us LNAV/VNAV minima on an RNAV approach?

The STC documentation provided with the GPS / FMS installation will indicate the type of minima it can go down to. Typically, GA aircraft like a Garmin 430/530 will only be certified down to LNAV ...
wbeard52's user avatar
  • 12.7k
5 votes

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

In this scenario, you do in fact have two legal options -- although you must decide if they are safe. First, you can cancel IFR when you break out on the approach and switch to SVFR (this was ...
rbp's user avatar
  • 16.8k
5 votes

Is it practical to fly IFR into Hawthorne Airport (KHHR) in IMC?

Without pulling up the SOP/LoAs between HHR and LAX and SoCal Tracon, or working at those facilities to see if there's a better option, and just looking at the positions of the airports and their ...
slookabill's user avatar
  • 6,339
5 votes

Why are sidestep ILS minima not used in EASA-land? (specific example: EGKK)

You use circling minima for sidestep manoeuvres. While not commonly practiced, they may be requested by the pilot, have done so many times when LEMD (MAD) is in N config, saves 20min taxi-time...
Morten L's user avatar
5 votes

What is a monitored approach?

Terminology "Monitored approach" is the most commonly used term for a specific allocation of pilot tasks during an approach to land. It involves a different distribution of workload to the ...
stevelast's user avatar
5 votes

What is the FMS Bridge Visual 28R approach at SFO?

Source: stilllearningtofly.org The FMS bridge visual is an RNAV charted visual approach to 28R that keeps aircraft offset to the north of the 28R localizer until they’re near the San Mateo bridge. ...
Murph's user avatar
  • 91

Only top scored, non community-wiki answers of a minimum length are eligible