Sponsor Message:
Aviation Technical / Operations Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
Final Approach Dead On Or Not?  
User currently offlineBryan Becker From United States of America, joined Mar 2001, 333 posts, RR: 0
Posted (13 years 1 month 2 weeks 6 days 15 hours ago) and read 2389 times:

It's me again! I just got all these questions in my head.When doing a final approach or turning to a final. Is the pilot always lined up with the center line of the runway? I know that on A ILS that it will tell you if you have a center line up or not. But what about a VOR approach. Do you always have to be lined up exactly with the center line? An do the pilots set the heading indicater to the runway heading and have autopilot hold the heading? If your flying a VOR approach how do you know that you are lined up with the center line
 Smile

5 replies: All unread, jump to last
 
User currently offlineBryan Becker From United States of America, joined Mar 2001, 333 posts, RR: 0
Reply 1, posted (13 years 1 month 2 weeks 6 days 13 hours ago) and read 2329 times:

Hay!!!!! JG your an airline pilot you could answer this.
 Smile


User currently offlinePenguinflies From United States of America, joined Apr 2000, 984 posts, RR: 0
Reply 2, posted (13 years 1 month 2 weeks 6 days 12 hours ago) and read 2320 times:

it depends...an ILS approach is designed and installed on the far end of the runway. It is adjusted to 700 ft (width) from the centerline...So if you are lined up, you will reach the centerline...if you "peg" (full deflection of the needle on either side) the needles on either side...you can be up to 350 ft off the centerline.

On a VOR approach (non-precision) you can approach a certain runway within 30 degrees. Example...a final approach course to Runway 9 can vary from a heading of 060-120. If the heading of the final approach course and any runway is greater than 30 degrees, a circling approach minimums will prevail. Example... 3K6 (St. Jacob, IL) uses an off-field VOR (Troy {TOY}) The final approach course is 090...but 3K6 has only one runway (13-31) To provide an instrument approach, the FAA allows a pilot to descend to a certain altitude and depending on the category of aircraft (A,B,C,D) a nd specified distance a pilot can circle the field to land on any runway. These approaches are labeled as VOR-A approach instead of say VOR 9 (which was the first example).

Let's not get into NDBs, cause those are hell to fly...though they are lifesavers when you don't have GPS and figure out that the one chart your missing is the VOR approach (don't laugh, it has happened to a couple of pilots)....

I know it is confusing...If you got time and money...go buy a FAR/AIM book (it's $12-15) I would recommend Jeppeson because of their organization of materials....But ASA, (and there is one other) will provide the SAME INFORMATION (cause they are copies of gov't documents) In the Jepp. book, look in the AIM on Pages A-8 to A-19 and all that information is there to read and enjoy (har har har)

The penguin


User currently offlineCdfMXTech From United States of America, joined Jul 2000, 1338 posts, RR: 27
Reply 3, posted (13 years 1 month 2 weeks 6 days 6 hours ago) and read 2281 times:

If your not flying an ILS, ther e is no other way to get lined up to the runway other than vbisually. VOR stations at an Airport may be located way off away from a runway.

User currently offlineJG From United States of America, joined Jun 2005, 0 posts, RR: 1
Reply 4, posted (13 years 1 month 2 weeks 6 days 2 hours ago) and read 2270 times:

Bryan,

The simple answer is no, not every approach procedure is lined up with the centerline of the runway. For those approach procedures that are not lined up with the centerline the visibility requirements and sometimes ceiling requirements for the approach are higher to allow the pilot room to manuever. Basically Bryan, the higher the visibility requirement the farther out you will see the runway giving you more time to line up with the centerline.

To answer your secondary questions.

It is certainly to your benefit to be lined up with the centerline of the runway when you touch down... after all, they are much longer than they are wide.  Smile

We do not necessarily align the heading bug with the runway centerline. A heading merely points the aircraft in a certain direction. If a crosswind is blowing the aircraft will drift left or right of centerline if only flying runway heading. So, the pilots adjust their heading to "track" the final approach course whether a VOR, NDB, SDF, LDA, GPS, RNAV, or ILS (or any other arbitrary sequence of letters you can dream up) then also track runway centerline during the final stages of approach.

I hope this helps.

JG


User currently offlineSpoiler From Spain, joined Apr 2007, 0 posts, RR: 0
Reply 5, posted (13 years 1 month 2 weeks 3 days 23 hours ago) and read 2205 times:

In fact, there are 'circling approaches.' Meaning that if the weather is above the minimums established for circling approaches, you could use a ILS, VOR, etc. approach for one runway, and then when you have the airport in sight, you could break off the approach for the first runway, and then line up with a different runway that the winds favor at the same airport.

Top Of Page
Forum Index

Reply To This Topic Final Approach Dead On Or Not?
Username:
No username? Sign up now!
Password: 


Forgot Password? Be reminded.
Remember me on this computer (uses cookies)
  • Tech/Ops related posts only!
  • Not Tech/Ops related? Use the other forums
  • No adverts of any kind. This includes web pages.
  • No hostile language or criticizing of others.
  • Do not post copyright protected material.
  • Use relevant and describing topics.
  • Check if your post already been discussed.
  • Check your spelling!
  • DETAILED RULES
Add Images Add SmiliesPosting Help

Please check your spelling (press "Check Spelling" above)


Similar topics:More similar topics...
Headsets On Or Not During Cruise? posted Mon Sep 10 2001 03:00:37 by B737-900X
Planes On Final Approach posted Wed Aug 24 2005 19:08:36 by Aircanada333
Rings On Radomes (not To Beat A Dead Horse) posted Sat Jul 26 2003 06:40:43 by Wilcharl
Keys Or Not On Airliners? posted Fri Aug 31 2001 20:15:40 by PanAm747
To Soap Or Not To Soap? posted Tue Nov 28 2006 08:04:19 by Turbonytro
Flare Or Not To Flare? posted Mon Oct 30 2006 09:58:37 by GlobalVillage
A330 Loud Thumping Just Prior To Final Approach posted Tue Jun 20 2006 17:55:25 by Hrhf1
Approach Mode On Autopilot - Questions posted Wed Nov 2 2005 22:56:52 by Julesmusician
Why May Bags On Oxygenmasks Not Inflate? posted Tue Oct 18 2005 08:59:50 by HT
Does The 777 Have Outboard Flaperons Or Not? posted Mon Aug 15 2005 00:54:45 by UAL747

Sponsor Message:
Printer friendly format