Notes on KBUU RNAV 29

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Thunderbird83

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Thunderbird83
I'm confused... Please interpret this note for me...

https://aeronav.faa.gov/d-tpp/1906/05901R29.PDF
On the RNAV 29 to Burlington WI, the following note applies: "Straight-in and Circling Rwy 29 NA at night."

What else is there other than a straight in or circling? Does this note mean that the procedure is not authorized at night?

Please help unconfuse me.
 
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I just looked in AirNav and noticed this procedure has been changed... Do you by chance have an older approach plate to look at?
 
Also something to keep in mind on that approach, if you're doing it as a practice approach in VMC and not talking to ATC to get vectors: the procedure turn, as depicted, puts you into KENW's airspace. I managed to "teach" @flyingcheesehead that one the hard way. :eek:
 
Thunderbird83 said:
I'm confused... Please interpret this note for me...

https://aeronav.faa.gov/d-tpp/1906/05901R29.PDF
On the RNAV 29 to Burlington WI, there following note applies: "Straight-in and Circling Rwy 29 NA at night."

What else is there other than a straight in or circling? Does this note mean that the procedure is not authorized at night?

Please help unconfuse me.
Click to expand...

No. You can Circle to Rwy 11
 
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Unlit obstacle in the approach plane.
 
Those towers are pretty close at the end of that approach. I bet it has something to do with that. Recently put up? Or have problem with lighting system on them??
 
I'm also confused by the note: "Visual Segment - Obstacles." I don't see a visual segment charted? :dunno:
 
flyingcheesehead said:
I'm also confused by the note: "Visual Segment - Obstacles." I don't see a visual segment charted? :dunno:
Click to expand...

From the AIM:

i. A visual segment obstruction evaluation is accomplished during procedure design on all IAPs. Obstacles (both lighted and unlighted) are allowed to penetrate the visual segment obstacle identification surfaces. Identified obstacle penetrations may cause restrictions to instrument approach operations which may include an increased approach visibility requirement, not publishing a VDP, and/or prohibiting night instrument operations to the runway. There is no implicit obstacle protection from the MDA/DA to the touchdown point. Accordingly, it is the responsibility of the pilot to visually acquire and avoid obstacles below the MDA/DA during transition to landing.

1. Unlighted obstacle penetrations may result in prohibiting night instrument operations to the runway. A chart note will be published in the pilot briefing strip “Procedure NA at Night.”

2. Use of a VGSI may be approved in lieu of obstruction lighting to restore night instrument operations to the runway. A chart note will be published in the pilot briefing strip “ Straight-in Rwy XX at Night, operational VGSI required, remain on or above VGSI glidepath until threshold.”

j. The highest obstacle (man-made, terrain, or vegetation) will be charted on the planview of an IAP. Other obstacles may be charted in either the planview or the airport sketch based on distance from the runway and available chart space. The elevation of the charted obstacle will be shown to the nearest foot above mean sea level. Obstacles without a verified accuracy are indicated by a ± symbol following the elevation value.
 
flyingcheesehead said:
I'm also confused by the note: "Visual Segment - Obstacles." I don't see a visual segment charted? :dunno:
Click to expand...

It means that you need to watch out on the approach as there were obstacles found during flight testing that required the flight test aircraft to maneuver off of the VDA (Visual Descent Angle). The visual segment is the portion of the approach between the VDP (Visual Descent Point) and the runway. The VDP is the point where the VDA intersects the MDA.

You are not supposed to use the advisory vertical guidance (+V) below the MDA, but if a pilot is dumb enough to do so, this note says he may hit something and ruin his day. It is to alert pilots who want to fly using the CANPA/CDFA method, that following the +V, they will need to adjust their path below the MDA to avoid obstacles.
 
mjburian said:
Also something to keep in mind on that approach, if you're doing it as a practice approach in VMC and not talking to ATC to get vectors: the procedure turn, as depicted, puts you into KENW's airspace. I managed to "teach" @flyingcheesehead that one the hard way. :eek:
Click to expand...

I did the same thing! I looked out the window and saw ENW airport and realized I boo-booed. Fortunately I realized just in time to turn away and miss their airspace, but lesson learned....
 
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