Lead Radial Question

This question concerns the ILS or LOC RWY 36R approach into Huntsville (AL)
International Airport (KHSV).
http://www.naco.faa.gov/d-tpp/0412/05488IL36R.PDF

Just to the left of the HIL pattern, there is a lead radial RQZ LR-200
shown. I assume this is for use by aircraft flying the feeder route from
DCU on R-149. But why is it needed? I thought LRs were required for turns
of more than 90 degrees. The HIL is required for arrival on the feeder, and
the feeder route makes a perfect teardrop entry into the hold, so no turn is
required after crossing ENIKY.

So why the LR?

Stan

Stan Prevost wrote:

This question concerns the ILS or LOC RWY 36R approach into Huntsville (AL)
International Airport (KHSV).
http://www.naco.faa.gov/d-tpp/0412/05488IL36R.PDF

Just to the left of the HIL pattern, there is a lead radial RQZ LR-200
shown. I assume this is for use by aircraft flying the feeder route from
DCU on R-149. But why is it needed? I thought LRs were required for turns
of more than 90 degrees. The HIL is required for arrival on the feeder, and
the feeder route makes a perfect teardrop entry into the hold, so no turn is
required after crossing ENIKY.

So why the LR?


So, why? Only 'da Shadow know. ;-)

Lead radials are required by policy, in addition to what's in TERPs, for ILS
approaches that do not have collocated DME. That's not the case here, but the
procedures specialist could have made an error (not uncommon with nits like
this), or some flight inspection pilot could have recommended it based on how it
flew from his perch.

Seems likes it there just to let a pilot that doesn't have DME know that
they haven't yet passed the localizer.
The way the regulation is worded, it's required only for an Initial
segment when the initial course and intermediate course differ by more
than 90 degrees, so it's not technically needed for this feeder. There's
nothing to prevent adding it, and if you don't have DME, it gives you a
good idea when you're about to reach the LOC intersection.
The actual wording can be found in FAAO 8260.3 para 232
http://av-info.faa.gov/terps/Directi...260.3_1-18.pdf

JPH

Stan Prevost wrote:
This question concerns the ILS or LOC RWY 36R approach into Huntsville (AL)
International Airport (KHSV).
http://www.naco.faa.gov/d-tpp/0412/05488IL36R.PDF

Just to the left of the HIL pattern, there is a lead radial RQZ LR-200
shown. I assume this is for use by aircraft flying the feeder route from
DCU on R-149. But why is it needed? I thought LRs were required for turns
of more than 90 degrees. The HIL is required for arrival on the feeder, and
the feeder route makes a perfect teardrop entry into the hold, so no turn is
required after crossing ENIKY.

So why the LR?

Stan

Thanks, JPH and Tim.

Stan


"J Haggerty" wrote in message
news:q2cpd.102277$tU4.84228@okepread06...
Seems likes it there just to let a pilot that doesn't have DME know that
they haven't yet passed the localizer.
The way the regulation is worded, it's required only for an Initial
segment when the initial course and intermediate course differ by more
than 90 degrees, so it's not technically needed for this feeder. There's
nothing to prevent adding it, and if you don't have DME, it gives you a
good idea when you're about to reach the LOC intersection.
The actual wording can be found in FAAO 8260.3 para 232
http://av-info.faa.gov/terps/Directi...260.3_1-18.pdf

JPH

Stan Prevost wrote:
This question concerns the ILS or LOC RWY 36R approach into Huntsville
(AL) International Airport (KHSV).
http://www.naco.faa.gov/d-tpp/0412/05488IL36R.PDF

Just to the left of the HIL pattern, there is a lead radial RQZ LR-200
shown. I assume this is for use by aircraft flying the feeder route from
DCU on R-149. But why is it needed? I thought LRs were required for
turns of more than 90 degrees. The HIL is required for arrival on the
feeder, and the feeder route makes a perfect teardrop entry into the
hold, so no turn is required after crossing ENIKY.

So why the LR?

Stan

Based on my experience with things like this: its an error. It happens and
slips by.

Did this procedure used to have a DME arc? It looks like a recently
released procedure, based on the naming convention of "ILS or LOC".

"Stan Prevost" wrote in message
...
This question concerns the ILS or LOC RWY 36R approach into Huntsville
(AL)
International Airport (KHSV).
http://www.naco.faa.gov/d-tpp/0412/05488IL36R.PDF

Just to the left of the HIL pattern, there is a lead radial RQZ LR-200
shown. I assume this is for use by aircraft flying the feeder route from
DCU on R-149. But why is it needed? I thought LRs were required for
turns
of more than 90 degrees. The HIL is required for arrival on the feeder,
and
the feeder route makes a perfect teardrop entry into the hold, so no turn
is
required after crossing ENIKY.

So why the LR?

Stan