Hi,
The ILS Z RWY 34L at RJTT requires capturing the localizer at ARLON (D19.6 IHA) and the glideslope at APOLO (5000 ft/D15.1 IHA). However, there is no ILS signal at that position. A similar issue occurs with RJTT RWY 34R and RJAA RWY 34L/R as well. Is it possible to correct this?
Hi,
First of all welcome at Navigraph and thanks for your posting.
Why do you mean that the LOC should received at ARLON?
Cheers
Richard
Hi Richard,
Thank you for your reply.
I’m not native English speaker so my English may have mistake.
There Is no LOC signal until approximately 20 or 18DME and no GS signal until 15DME, so approach is very unstable.
Cheers,
Konko
In this video, ILS is received at a point far from ARLON.
Hi,
In the IAPs listed by konko, the LOC signal is too weak and does not reach the required points. The GS signal also does not reach the intercept altitude. (The LOC cannot be captured until 18-20 DME, and the GS cannot be captured until 15 DME.)
[LOC]
On the IAP, it is considered that at least at the points (FIX) where the DME from the ILS is indicated, the LOC should be receivable. This is because aircraft without FMS use the LOC after the IF for their approach.
For example, when flying the ADDUM ARRIVAL, it is indicated that the LOC should be captured from ARLON (19.6 DME) onward. Therefore, being unable to capture the LOC at ARLON is deemed inappropriate.
In the video he posted, it can be seen that the LOC frequency is being received at a point 16.8 NM before ARLON (≒36.4 DME from ILS RWY34L).
[GS]
Due to the weak GS signal, at the following IAPs for RJTT and RJAA, where an intercept altitude of 5000 ft is required, the GS cannot be received at the FAF, or it can only be received at a point very close to the FAF, resulting in an unstable approach:
RJTT ILS RWY34L: APOLO (15.1 DME) at 5000’
RJTT ILS RWY22: NITRO (15.0 DME) at 5000’
RJAA ILS RWY34R: LAPIS (14.7 DME) at 5000’
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