Question on KOTH ILS 4 Approach

bobsk8
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Question on KOTH ILS 4 Approach

Post by bobsk8 »

Hi, need some help seeing if I am reading the approach plate correctly for KOTH rwy 4 ILS. If I overfly the OTH VOR at or above 5400 feet, I then should fly a heading of 226 and descend to 2000, then turn left to a heading of 046 degrees until intercepting the ILS. Is this correct, or am I mistaken..


Thanks.
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CaptainBoeing
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Re: Question on KOTH ILS 4 Approach

Post by CaptainBoeing »

There are a couple ways to fly this approach. You can use the north or south DME ARC as well.

While I am a little new at this myself, the way I read it is as follows...

Fly heading 244 @3000ft out of OTH. ( not seeing anything on the chart that mentions 5400ft)

Then fly back course on the 226 I-OTH Localizer (108.5). Start descending to 2000ft when 6.3 away from OTH VOR (112.1)

When 8.8 away from OTH VOR turn left 181 degrees for one minute, then turn right 001 back to intercept I-OTH localizer (108.5) on the 046 final approach course.

Once established on the 046-course descend to cross the fix LEAST at 1300FT.

After the LEAST fix descend to 900ft to intercept the glide slope.

I looked at the Jeppeson chart that's a little more clear then the FAA's. Confusion may come from the two different Navs. I-OTH 108.5=Localizer...OTH VOR 112.1=VOR. This approach uses both of them.

Not saying its correct, again I am new at this myself. But that's how I read it. :)

Ken
bobsk8
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Re: Question on KOTH ILS 4 Approach

Post by bobsk8 »

CaptainBoeing wrote:There are a couple ways to fly this approach. You can use the north or south DME ARC as well.

While I am a little new at this myself, the way I read it is as follows...

Fly heading 244 @3000ft out of OTH. ( not seeing anything on the chart that mentions 5400ft)

Then fly back course on the 226 I-OTH Localizer (108.5). Start descending to 2000ft when 6.3 away from OTH VOR (112.1)

When 8.8 away from OTH VOR turn left 181 degrees for one minute, then turn right 001 back to intercept I-OTH localizer (108.5) on the 046 final approach course.

Once established on the 046-course descend to cross the fix LEAST at 1300FT.

After the LEAST fix descend to 900ft to intercept the glide slope.

I looked at the Jeppeson chart that's a little more clear then the FAA's. Confusion may come from the two different Navs. I-OTH 108.5=Localizer...OTH VOR 112.1=VOR. This approach uses both of them.

Not saying its correct, again I am new at this myself. But that's how I read it. :)

Ken
OK, that is a big help. Only question is , how did you determine that the 181 heading was one minute before turning to 001?
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rtataryn
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Re: Question on KOTH ILS 4 Approach

Post by rtataryn »

CaptainBoeing wrote:There are a couple ways to fly this approach. You can use the north or south DME ARC as well.


Fly heading 244 @3000ft out of OTH. ( not seeing anything on the chart that mentions 5400ft)

Yes, that medium thickness line is a feeder route from OTH to EMIRE the IAF.

Then fly back course on the 226 I-OTH Localizer (108.5). Start descending to 2000ft when 6.3 away from OTH VOR (112.1)

Flying the back course is not actually indicated here. A course of 226 from EMIRE is sufficient. Descent to 2000 begins after passing EMIRE.

When 8.8 away from OTH VOR turn left 181 degrees for one minute, then turn right 001 back to intercept I-OTH localizer (108.5) on the 046 final approach course.

8.8 DME from OTH identifies LEAST. It has no bearing on the procedure turn. It only becomes a factor on the inbound leg.
Once established on the 046 course descend to cross the fix LEAST at 1300FT.

After the LEAST fix descend to 900ft to intercept the glide slope.

Yes


Ken
Last edited by rtataryn on Mon Nov 06, 2017 6:47 pm, edited 1 time in total.
Rod
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bobsk8
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Re: Question on KOTH ILS 4 Approach

Post by bobsk8 »

OK, with your help, this is what I did tonight. The instruction I was given by ATC was to overfly OTH, where I got totally lost because at that point I had no idea what to do next. Too late to dig out approach plate and study it, while flying IMC ( my bad). So after reading the posts above, I really studied the approach. I wanted to recreate what happened this afternoon, so I started by flying over OTH as a starting point. I then flew a heading of ( 292= Error wrote down wrong #) 244 degrees which brought me to Emire ( where my NDB was set). I then turned outbound on the BC, or heading 226, began descent to 2000, and started procedure turn to 181 for 1 minute and then turned right to 001, then intercepted the LOC and down to 1300 at LEAST.

Never did a DME arc, that is next thing I will have to work on.. Thanks everyone for the help.

Anyway, I learned a great deal on Pilotedge today. :)
Last edited by bobsk8 on Sun Nov 05, 2017 6:56 pm, edited 1 time in total.
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rtataryn
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Re: Question on KOTH ILS 4 Approach

Post by rtataryn »

bobsk8 wrote: I then flew a heading of 292 which brought me to Emire ( where my NDB was set).
292 is not a heading to fly. It is the altitude of the tower obstacle. The course for the feeder route is 244. Look for it. You'll know that because 244 has a degree sign next to it. The tower altitude does not.
Last edited by rtataryn on Mon Nov 06, 2017 6:48 pm, edited 1 time in total.
Rod
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2013 Cirrus SR22T N877MS
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bobsk8
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Re: Question on KOTH ILS 4 Approach

Post by bobsk8 »

rtataryn wrote:
bobsk8 wrote: I then flew a heading of 292 which brought me to Emire ( where my NDB was set).
292 is not a heading to fly. It is the altitude of the tower obstacle. The heading for the feeder route is 244. Look for it. You'll know that because 244 has a degree sign next to it. The tower altitude does not.
Meant to say 244 degrees , looked at the wrong number when I was typing the post... Question, does the ( 6.3) next to the 244 degrees indicate that 6.3 miles on that 244 heading will get you to emire?
Last edited by bobsk8 on Sun Nov 05, 2017 7:01 pm, edited 1 time in total.
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CaptainBoeing
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Re: Question on KOTH ILS 4 Approach

Post by CaptainBoeing »

OK, that is a big help. Only question is , how did you determine that the 181 heading was one minute before turning to 001?
Its a standard rate turn, same as the holding pattern. You could do more or less if you want (I think). The main objective is to get you turned around to intercept the localier at a good angle. A minute takes you out far enough away to turn, level you wings, and intercept the localizer.

Ken
bobsk8
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Re: Question on KOTH ILS 4 Approach

Post by bobsk8 »

CaptainBoeing wrote:
OK, that is a big help. Only question is , how did you determine that the 181 heading was one minute before turning to 001?
Its a standard rate turn, same as the holding pattern. You could do more or less if you want (I think). The main objective is to get you turned around to intercept the localier at a good angle.

Ken
Yes, I read up on that tonight 45-180 procedure turns or 80-260 or teardrop. All new stuff for me.
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CaptainBoeing
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Re: Question on KOTH ILS 4 Approach

Post by CaptainBoeing »

Hey, we have all been there...I learn stuff new all the time. Nice to have a forum of helpful people with lots of experience. :D
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