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Author Topic: Any marker beacons in the USA in 2021?  (Read 526 times)

Hardy Heinlin

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Any marker beacons in the USA in 2021?
« on: Tue, 30 Mar 2021 22:29 »
Good evening,

the FAA's ARINC-424 nav database for 2021 doesn't contain any marker beacons. Are they all decommissioned now or are they just excluded from the database?

I understand that more and more ILS get DMEs so that they don't need markers anymore.


Regards,

|-|ardy

dhob

  • Join date: Sep 2019
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Re: Any marker beacons in the USA in 2021?
« Reply #1 on: Wed, 31 Mar 2021 01:19 »
For CAT II ILS approaches with RA Not Authorized minimums, an inner marker is required. Some examples are KMSP ILS 30L CAT II and KPIT ILS 10L/R CAT II.

Hardy Heinlin

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Re: Any marker beacons in the USA in 2021?
« Reply #2 on: Wed, 31 Mar 2021 06:59 »
Does the FAA require an inner marker even if there's a paired DME? If I recall correctly, the ICAO only requires markers when the paired DME is out of service.

dhob

  • Join date: Sep 2019
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Re: Any marker beacons in the USA in 2021?
« Reply #3 on: Wed, 31 Mar 2021 07:33 »
For the approaches I referenced, the inner maker is required. No reference to DME is allowed. The published DA may be set, in which case the minimums are either the inner marker or DA, whichever occurs first.

Hardy Heinlin

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Re: Any marker beacons in the USA in 2021?
« Reply #4 on: Wed, 31 Mar 2021 10:48 »
OK, thanks. So, obviously, the markers are just excluded in the FAA's nav database.

Jeroen Hoppenbrouwers

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Re: Any marker beacons in the USA in 2021?
« Reply #5 on: Wed, 31 Mar 2021 10:56 »
It is not relevant, but FYI: the local airport KTMB here (4000, 5000, and 6000 ft, so not for heavies) definitely has inner markers, they are hard to miss when driving around the periphery fence.

Hardy Heinlin

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Re: Any marker beacons in the USA in 2021?
« Reply #6 on: Wed, 31 Mar 2021 11:10 »
What I don't see anymore, however, in worldwide databases, are airway markers. I think the last ones were in Iceland, and they disappeared circa 2016.

Markus Vitzethum

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Re: Any marker beacons in the USA in 2021?
« Reply #7 on: Wed, 31 Mar 2021 13:09 »
Hi Hardy,

I agree - in direct comparison, the (inner) markers (e.g. JFK 04R/22L) are excluded from the FAA database but are still present in other databases.

Markus

(but I don't see (charted) any inner markers at KTMB, neither on the ILS chart nor in the database.)

JRBarrett

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Re: Any marker beacons in the USA in 2021?
« Reply #8 on: Sat, 1 May 2021 13:55 »
There are far fewer outer and middle markers in the US than there once were, but they are not completely gone. KLEX (Lexington, KY) has one on the ILS 22 and ILS 04 approaches. These are both LOMs with an associated NDB - (which are themselves an endangered species).  KSLN ILS 35 (also an LOM). Wichita (KICT) still has OM on 3 of 4 ILS approaches - one of which is an LOM.


jeffreymg

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Re: Any marker beacons in the USA in 2021?
« Reply #9 on: Tue, 4 May 2021 03:26 »
We have Marker Beacon's at KJAX Jacksonville International Airport in Florida on ILS 8 and 26 and runway 8 the middle marker is a LOM with a NDB.

Jeff