Wind turbine · 2026
522 alt
Sheffield, IA · near Hampton Muni (10.2 mi)
What this outcome means
The FAA studied the proposal and concluded it would not be a hazard to air navigation. A no-hazard determination is not permanent — it carries an expiration date, and if the structure is not built by then the case has to be re-filed.
The proposal, in the filer's words
"Filing for proposed wind array located near Sheffield IA. (spreadsheet with prior ASNs & site overview map attached)"
Filing details
- Case number (ASN)
- 2026-WTE-1731-OE
- Structure
- 522 alt
- Type
- Windmill
- Category
- Wind turbine
- Height above ground
- 699 ft
- Height above sea level
- 1,886 ft
- Site elevation
- 1,187 ft
- Notice of
- New Construction
- Duration
- Permanent
- Marking & lighting
- White Paint/Synchronized Red Lights
Timeline
- Filed
- April 3, 2026
- Determined
- July 2, 2026
- Determination expires
- January 2, 2028
A determination that lapses before the structure is built has to be re-filed. The FAA does not send a reminder.
Who filed it
- Sponsor
- Interstate Power AND Light Company
- Representative
- Capitol Airspace Group
Names are shown as they appear in the FAA's public record. How we handle names
See every 2026 filing by Interstate Power AND Light Company →
Location
- Coordinates
- 42.859017, -93.308197
- Degrees / minutes / seconds
- 42°51'32.5"N 93°18'29.5"W
- County
- Franklin
- Open in a map
- Google MapsOpenStreetMap
Other filings within 5 miles
Organisation-sponsored 2026 filings whose coordinates sit near this one.
See every 2026 filing near Hampton Muni →
About this record
This page is a readable copy of a public record published by the FAA's Obstruction Evaluation / Airport Airspace Analysis system. It is not the official record and may lag it. For the authoritative case status, search this ASN at the FAA's OE/AAA portal. If something here is wrong, email support@idea-engine.studio and we will correct it.
Source: FAA Obstruction Evaluation / Airport Airspace Analysis (OE/AAA) public archive (oeaaa.faa.gov), data as of September 12, 2026. Compiled by LOS Analyzer (Idea Engine LLC). This is not an official FAA record or an FAA determination; the FAA's portal is authoritative. LOS Analyzer is not affiliated with or endorsed by the FAA.
Screening a structure of your own?
Check Part 77 and the tower's line of sight before you file
LOS Analyzer screens a proposed structure against FAA Part 77 surfaces and the control tower's sightline to the runway, terrain-aware, in minutes. It is a preliminary screening — not an FAA determination and not a substitute for a licensed engineering review.