Questions tagged [ifr-navigation]

Questions about navigating under Instrument Flight Rules

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Pilot briefing strip

Hello can you guys break this down for me? The briefing strip says Rwy 10 R helicopter visibility reduction below RVR 4000 NA. Is NA not authorized or Not available? Simultaneous approach authorized . ...
youngpilot's user avatar
1 vote
1 answer
88 views

Can I fly a SID/STAR if a navaid is NOTAMed inoperative, using RNAV?

Take a SID like this, BARPI2K at LJPZ. The textual Route description says BARPI TWO KILO Climb on track 315 to 1700 ft; LT to PZ L; overhead PZ L; LT on HDG 295; intercept PZ QDR 325 PZ L to BARPI. ...
Marcell Toth's user avatar
9 votes
1 answer
822 views

Should IFR flight plans in the USA still have one waypoint per sector in 2023?

Alternate title: How come ATC has cleared aircraft direct from Laredo to Columbus 17 times? If you hop on ForeFlight today (Feb 20 2023) and search for suggested routes between KLRD and KCMH you'll ...
Steve V.'s user avatar
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2 votes
1 answer
140 views

Why does the FAA allow a dual receiver check for IFR

FAR 91.171 allows a pilot to use independent VORs to do the VOR check as opposed to using a testing facility. The reg says as long as they are within 4 degrees of each other the pilot is good to go. ...
Name's user avatar
  • 886
1 vote
1 answer
147 views

Can a modern commercial passenger flight recover from failed sensor(s)? [closed]

ABC News reports a failure in a pitot tube sensor may be the cause of an AirFrance Rio to Paris flight tragedy. Excerpts from the news include: An Associated Press investigation at the time found ...
gatorback's user avatar
  • 357
5 votes
1 answer
87 views

KHAF runway 30 ODP in the works, appears to be missing a segment

Asked the FAA about this & they replied that the procedure has been redesigned since the one at the link was posted, that the old charts will be removed from the website, and that the newly ...
Foster Boondoggle's user avatar
3 votes
3 answers
373 views

Reaching clearance limit

For EASA, if possible. If I'm IFR flight flying STAR and I receive shortcut to a point which is behind IAF but I'm not cleared for eg. ILS RWY 12 approach, what I'm supposed to do? I would say that ...
pzag's user avatar
  • 31
1 vote
2 answers
299 views

GPS-based IAP at alternate airport

I'm reading AIM 1-1-17 section 5. (c). I understand that the current regulation allows un-augmented GPS (non-WAAS GPS) to be used at either destination or alternate, but not both. But the chapter goes ...
Hot.PxL's user avatar
  • 517
6 votes
2 answers
1k views

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/...
TomMcW's user avatar
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1 vote
0 answers
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For what reason are the published segment altitudes (circled in red) relevevant and ever used by flight crews flying this STAR?

On the HLYWD ONE Standard Terminal Arrival (STAR) into KLAX (Los Angeles International Airport) there are altitudes (circled in red on the images below) published on its "Transition" routes ...
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Flying an RNAV SID with instructions to intercept a course to a waypoint

Looking at the OZZIE FOUR departure off APC (first page shown) the instructions are, e.g., TAKEOFF RUNWAY 19L: Climb on heading 186° to intercept course 269° to KLARK, then on track 342° to FIRTO at ...
Foster Boondoggle's user avatar
5 votes
2 answers
1k views

What is RNAV transition and what is the difference between RNAV transition and RNAV STAR

Can someone explain what is RNAV transition and what is the difference between RNAV transition and RNAV STAR. Because sometimes both types of procedures are published for an airport and I don't know ...
Konrad's user avatar
  • 1,953
6 votes
2 answers
410 views

Can ATC provide vectors and separation service to and between IFR aircraft in areas where radar coverage does not exist using ADS-B only?

In the U.S., can ATC provide vectors and separation service to and between IFR aircraft in areas where radar coverage does not exist using ADS-B only? If so, are the separation standards the same as ...
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1 vote
1 answer
324 views

What can be obtained from minimum vector altitude (MVA)?

From the minimum vector altitude (MVA) can be obtained: Only the obstacle clearance, only the navigation reception, or both?
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-3 votes
1 answer
312 views

How long is the TDZ of a runway? [closed]

How long is the TDZ of a runway? 3000 ft, 3500 ft or 2000 ft?
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4 votes
1 answer
699 views

How do you realign a directional gyro in an area of magnetic unreliability?

The primary means of determining heading in most small aircraft is the directional gyro, as this instrument is unaffected by the magnetic dip errors that cause a magnetic compass to give the wrong ...
Vikki's user avatar
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1 vote
1 answer
390 views

What are all the different ways pilots can navigate?

What are all the different ways pilots can navigate? What are they in simple terms and their unique advantages/disadvantages? EX: Dead-reckoning? VOR? GPS? ATC Directives? Others?
TayE's user avatar
  • 6,565
7 votes
2 answers
297 views

Does the radial needle of a HSI automatically deflect to the correct position when tuning the NAV radio to a localizer / ILS?

At least on small aircraft, the HSI is slaved to the NAV1 radio. The NAV1 radial is selected with a small knob of the HSI. Now, when I want to fly an ILS approach I don't need to set a radial myself ...
TheEagle's user avatar
  • 1,374
3 votes
2 answers
698 views

Symbol found on an IFR low chart

I see this symbol on an IFR low chart, can someone tell me what it is?
Zachinquarantine's user avatar
4 votes
1 answer
530 views

Where is the V3 airway mentioned on the ILS 34 approach plate for KPSM?

While drafting a simple flight plan for KBOS to KPSM, I noticed that the ILS 34 Approach plate for KPSM mentioned that the procedure turn is "NA for arrivals at PSM VOR/DME on V3 northbound":...
Chris Scott's user avatar
2 votes
1 answer
381 views

If I'm cleared for the approach while established in a hold, can I turn inbound immediately?

If you are established in holding and on an outbound leg (say you are 30 sec outbound on a 1 min or 3.5nm on a 7nm leg) and you are subsequently “cleared approach,” are you allowed to immediately turn ...
Under-qualified Instructor's user avatar
8 votes
2 answers
3k views

Does an IFR flight-plan include the approach?

I tried to create an IFR flight plan (at simbrief.com) and there is something I don't get: Are we supposed to know the runway/approach at the destination airport before taking-off, and add it to the ...
Swisstone's user avatar
  • 191
7 votes
1 answer
338 views

Why would there be two RNAV waypoints co-located with a VOR?

Similar to this question but more so! The Enroute H-5 chart shows two RNAV waypoints over Spinner VORTAC (SPI): SOHOW and USIRE. Neither waypoint appears on the Low IFR charts, nor on the VFR charts. ...
randomhead's user avatar
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2 votes
1 answer
3k views

What does an "X flagged" VOR mean on an en-route IFR chart?

Source: skyvector.com Maybe I'm looking at the wrong sections / using wrong keywords in the chart user's guide.
user avatar
4 votes
1 answer
399 views

If I have a VOR receiver and a GPS, which should I use to navigate VOR airways?

FAR 91.181a states that aircraft on ATS routes shall be flown along the route centerline. I would like a clarification regarding VOR airways. I have a GPS and a VOR receiver, and usually when I fly ...
asb1230's user avatar
  • 638
4 votes
2 answers
350 views

Are VOR airways being replaced by RNAV routes as VORs are decommissioned?

I understand that VORs in the US and elsewhere are being removed from service gradually. The FAA plans to maintain a Minimum Operational Network, but still I imagine many VOR airways will also have to ...
asb1230's user avatar
  • 638
3 votes
3 answers
3k views

Is it legal to use GPS to navigate VOR Airways?

A previous question concludes that it is legal to fly an aircraft in the US with only an IFR-approved GPS/WAAS system and no other navigation equipment on an IFR flight plan. My question is about how ...
asb1230's user avatar
  • 638
2 votes
1 answer
278 views

What are these shaded areas?

What are these shaded areas? I looked in the Jeppesen legend, but couldn't find the answer. Thanks
PilotPilot's user avatar
2 votes
4 answers
1k views

Selecting radials for radial interception

I’m a beginner in intrument flying so sorry for my ignorance. Few months ago I was doing BIR training and with my CFI we were intercepting radials, we were doing that on HSI (Garmin G500). He told me ...
Konrad's user avatar
  • 1,953
2 votes
1 answer
409 views

What do European pilots use for IFR enroute charting (besides Jeppesen)?

Is there something equivalent to FAA IFR enroute charts for European countries, where you can see published routes, holds, minimum altitudes, etc? I can find terminal area procedures in the AIPs, but ...
rs_atl's user avatar
  • 301
1 vote
2 answers
796 views

Do I need to call Clearance Delivery for IFR Practices when taking off from a D airport?

I have the following question: If I am going to practice IFR approaches under VFR, do I need to contact clearance delivery for that or it's enough to contact ground and state my intentions? I would ...
Ivan Parra's user avatar
2 votes
1 answer
743 views

Can I fly the LNAV MDA when the GPS is set up for LPV?

I am going to do my CFII checkride in a few weeks and my DPE wants to do RNAV approaches to satisfy the Non-Precision and Precision approaches tasks on the PTS/ACS. According with the Instrument ACS ...
Ivan Parra's user avatar
7 votes
3 answers
1k views

Why might DTK on GPS not match depicted course on approach plate?

I hope this isn't a dumb question, but I haven't flown a whole lot of GPS approaches and today I observed something that I cannot explain: There was a 2 degree split between the Desired Track (DTK) ...
Michael Hall's user avatar
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1 vote
1 answer
225 views

How to navigate onto VOR RWY 18 approach at KDEC?

Maybe a dumb question. I've seen a few places where a VOR approach doesn't have an obvious (to me) way to get lined up inbound without radar vectors. Say you don't have GPS and you're navigating with ...
Cameron's user avatar
  • 135
0 votes
1 answer
364 views

What do the Airway Letters and the following numbers mean? [duplicate]

For example, from RCTP - ZGGG the route is AJENT MKG A1 ANPOG R200 GLN W22 IDUMA via the AJENT SID to the IDUMA STAR. What does "A1 or R200 or W22" mean? Are they just randomly allocated letters with ...
Samuel's user avatar
  • 43
0 votes
1 answer
588 views

What is meant by Manual Tuning of ADF/NDB using BFO? [duplicate]

As NDB transmission is either N0NA1A(requires BFO to be turned on for Manual Tuning, Identification and Monitoring) or N0NA2A(BFO turned on only for Manual Tuning). My question is what exactly is ...
Nish's user avatar
  • 609
7 votes
2 answers
315 views

When to start descent entering a racetrack under NORDO?

Scenario: I am flying in IMC, and communications fail completely. IMC persists up until destination, where I will be conducting the following instrument approach: I am flying direct to ZUNAD from the ...
triplosete's user avatar
9 votes
4 answers
5k views

What should a pilot flying IFR in IMC and on final, do if the vacuum system fails?

Talking about small aircraft here, assuming the pilot is stable and ready to land, they’re flying IFR and the visibility is nonexistent, but that’s alright because he’s currently IFR! But then the ...
George Clooney In a Mooney's user avatar
2 votes
3 answers
2k views

What stops a pilot from flying VFR and going IFR?

Even if the pilot is instrument rated, what stops them from doing it anyway? I’d imagine in certain situations where danger is approaching, it may be best to switch to IFR, it can’t be that hard to ...
George Clooney In a Mooney's user avatar
1 vote
1 answer
470 views

What are the implications of Visual Descent Angle Not Authorized (VDA NA)?

On some non-precision approach plates, there is a VDA/TCH mark. My understanding of it is information-only. If you pass its starting fix at the charted altitude and maintain the given descent angle, ...
CrepuscularV's user avatar
  • 3,361
3 votes
3 answers
3k views

Can I file IFR DIRECT with a non-WAAS GPS?

The AIM 1-1-17 2 (a) states: Aircraft using un-augmented GPS (TSO-C129() or TSO-C196()) for navigation under IFR must be equipped with an alternate approved and operational means of navigation ...
rainkinz's user avatar
  • 357
2 votes
1 answer
511 views

Does EASA allow using a portable GPS for RNAV capability?

Assume an older IFR-certified aircraft with the classical equipment, that is two VOR/ILS receivers with plain CDIs, ADF and DME, but no GPS. It can be flown IFR, but many routes can't be used, because ...
Jan Hudec's user avatar
  • 56.2k
0 votes
1 answer
811 views

Does the term track guidance apply only to conventional procedures?

In ICAO's 8160 "Aircraft Operations" manual there is a term called "track guidance", for which I can not find any clear definition. A few examples: Departure Procedures 3.1 3.1.1 There are ...
Vector Zita's user avatar
  • 1,853
2 votes
1 answer
2k views

Does a GPS OBS selector use magnetic or true courses?

Under GPS navigation, when we are using the OBS to tune courses. Are these courses magnetic or true?
Darshan Patil's user avatar
3 votes
1 answer
733 views

Are there any IFR training plugins / addons for Microsoft Flight Simulator or X-Plane?

I am an IFR student, looking for software/plugins/add-ons/extensions to either Microsoft Flight Simulator or X-Plane to enhance the IFR training experience. Specifically, I was wondering if there was ...
Conway's user avatar
  • 589
1 vote
1 answer
868 views

Question about CDI/OBS and HI [duplicate]

Could somebody please explain me the differences between using the OBS and the Heading Indicator? As much as I could understand, once you tune into the VOR, the OBS starts to show how much deflection/ ...
Ben's user avatar
  • 21
1 vote
2 answers
480 views

Distance to the runway/ touchdown point

Trying to learn about aviation, and looking through all the displays in the cockpit, and also the Garmin G1000, I am not sure where I see the distance to the runway touchdown point, or the start of ...
Ben's user avatar
  • 21
0 votes
3 answers
168 views

Why is it necessary to fly in visual conditions to certain unmanned airstrips?

I have come across certain unmanned airstrips where only VFR flight is allowed not IFR? I wonder what can be the possible reasons for that?
Hafiz Kashif Amin's user avatar
4 votes
1 answer
144 views

Is the "auto-routing" created by online flight planning resources preferred by ATC over Direct routing when NO preferred route exists?

I noticed that when I use online flight planning resources, they provide an "auto-routing" option for my flight. I also noticed that they are the same between both services so it seems like both are ...
Devil07's user avatar
  • 8,532
2 votes
2 answers
864 views

Is it ever allowed to list your destination airport as the IFR alternate too?

Is it legal (in certain conditions) to have your primary airport of intended landing, also listed as the alternate?
Tom Wharton's user avatar