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LOS Analyzer

Crane · 2026

Mobile Crane 43705 Efficiency Dr

Sterling, VA · near Washington Dulles Intl (1.8 mi)

Determination of no hazardDetermined - No Hazard187 ft AGL

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

"Raise tilt walls and mechanical equipment. Initial mobilization is expected to be 4-6 weeks followed by potential future 1-2 day mobilizations"

Filing details

Case number (ASN)
2026-AEA-4022-OE
Structure
Mobile Crane 43705 Efficiency Dr
Type
Crane
Category
Crane
Height above ground
187 ft
Height above sea level
474 ft
Site elevation
287 ft
Notice of
New Construction
Duration
Temporary
Marking & lighting
Red lights and flags

Timeline

Filed
March 26, 2026
Determined
April 21, 2026
Determination expires
October 21, 2027

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
Southland Concrete (PJ)
Representative
Cignus Consulting LLC

Names are shown as they appear in the FAA's public record. How we handle names

Location

Coordinates
38.959392, -77.489922
Degrees / minutes / seconds
38°57'33.8"N 77°29'23.7"W
County
Loudoun

Other filings within 5 miles

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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.