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LOS Analyzer

Building · 2026

MSKCC York Ave

New York, NY · near East 34th Street (1.7 mi)

Determination of no hazardDetermined - No Hazard538 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

"Proposing to construct a 27-story cancer hospital at 1233 York Avenue in New York New York. The building will be equipped with a building maintenance unit (BMU) on the roof. The base of the BMU is located by point 4 and the BMU extends up to 129' horizontally from the base while in operation. Building points 1 2 3 4 and 6 are filed as if the BMU is in operation to represent the maximum possible height of the building footprint. When the BMU is not in use the highest point of the building is at the top of a bulkhead shown as point 5 at 529' AGL/559' AMSL. The heights filed include a 10-foot buffer to account to for potential variances in construction. The construction also includes a pedestrian bridge connection across E 67 Street to the existing hospital at 1275 York Ave at approximately 145' AMSL. The existing building on site has been demolished. Crane(s) will be filed at a later date."

Filing details

Case number (ASN)
2026-AEA-2274-OE
Structure
MSKCC York Ave
Type
Building
Category
Building
Height above ground
538 ft
Height above sea level
572 ft
Site elevation
34 ft
Notice of
New Construction
Duration
Permanent
Marking & lighting
Red lights

Timeline

Filed
February 16, 2026
Determined
June 25, 2026
Determination expires
December 25, 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
Memorial Sloan Kettering Cancer Center
Representative
VHB Engineering

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

Location

Coordinates
40.763661, -73.956281
Degrees / minutes / seconds
40°45'49.2"N 73°57'22.6"W
County
New York

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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.