Mayo Clinic St Marys Hospital HeliportPrivate
99MN · Rochester, MN · Non-towered · Open on the map
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Weather
METAR observed
TAF forecast
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Sun & FAA night2026-09-21 · night begins 07:38 PM
| Event | Local (CDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 06:27 AM | 11:27Z |
| Sunrise | 06:56 AM | 11:56Z |
| Sunset | 07:10 PM | 00:10Z |
| Evening civil twilight Loggable night begins | 07:38 PM | 00:38Z |
Plan a flight from 99MN
Winds aloft NOAA forecast · 3,000 to 53,000 ft
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Full reports: nearest reporting station
Advisories
NOTAMs · Loading NOTAMs…
Pilot reports · Loading PIREPs…
Airspace hazards · Checking SIGMETs and G-AIRMETs…
Temporary flight restrictions · Checking for TFRs…
Runways
| Runway | Length | Your margin |
|---|---|---|
| H1/ | 91 ft |
Prefer one flat page? Full runway details for 99MN → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the 99MN kneeboard →
Comms & NavAids
Communication frequencies
Taxi & takeoff
Departure & arrival
“Rochester”ATC assigns the exact frequency (in your clearance or on handoff) — which one depends on your SID (departing) or STAR (arriving).
By procedure & sector (1 frequencies)
| Frequency | Used by |
|---|---|
| 251.125 | APCH/P DEP/P |
Source: FAA NASR (current 28-day cycle).
Nearby navigation aids
RST 112.00 · FOW 111.20
| NavAid | Type | Freq · ch | Range | Radial / Dist magnetic |
|---|---|---|---|---|
| RST · Rochester | VOR/DME | 112.00 · 57X | Low | r014° / 15.1 NM |
| FOW · Halfway | VOR/DME | 111.20 · 49X | Terminal | r104° / 39.8 NM |
Prefer one flat list? All 99MN frequencies →
Charts & procedures
No published instrument procedures or Chart Supplement for 99MN — open it on the VFR sectional →
Airport info
Airport information
- FAA LID
- 99MN
- Coordinates
- 44.0198, -92.4831
- Elevation
- 1,166 ft MSL
- Magnetic variation
- 1W
- Sectional chart
- GREEN BAY
- Airport use
- Private
- Control tower
- No
- ARTCC
- MINNEAPOLIS (ZMP)
- Flight service (FSS)
- PRINCETON · 122.2 · 1-800-WX-BRIEF
- NOTAM facility
- FDC
- Attendance
- ALL ALL
- Beacon
- white-green-yellow (SEE RMK)
- Segmented circle
- No
- Wind indicator
- yes
- Activated
- 1984/10
- Distance from city
- 0 N
Night operations
- Airport lighting
- SEE RMK
- Rotating beacon
- white-green-yellow · SEE RMK
- Pilot-controlled lighting
- ACTVT ROTG BCN - 5 CLICKS CTAF. on 123.05
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are under Sun & FAA night in the Weather section.
Services fuel · repairs · oxygen · attendance
- Fuel available
- Jet A
Ownership & management 2 contacts
Remarks FAA · 4 notes
General
- 9MN AWOS IS ASSOCIATED WITH HELIPORT 99MN.
- FOR CD CTC MINNEAPOLIS ARTCC AT 651-463-5588.
Lighting
- ACTVT ROTG BCN - 5 CLICKS CTAF.
- PHONE REQ FOR PERIMETER LGTS CALL 507-255-2808 OR USE FREQ 155.385 TONE 141.3 OR 155.340 TONE 210.7 OR 130.075.
Nearby airports
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Also nearby: MN56 Methodist/Charlton Building (private) (1 NM) · 2MN8 Medical-City Aviation (private) (7 NM) · MN32 Nietz Airstrip (private) (10 NM) · MY37 Eyota (private) (10 NM)
About 99MN
Mayo Clinic St Marys Hospital (99MN) is a heliport in Rochester, MN, at 1,166 ft MSL. It has 1 runway, the longest 91 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 99MN, refreshed from the Aviation Weather Center and FAA NASR.
Does 99MN have a control tower?
No. Mayo Clinic St Marys Hospital is a non-towered (pilot-controlled) heliport; use the published CTAF/UNICOM in the Comms & NavAids section.
What is the longest runway at 99MN?
Mayo Clinic St Marys Hospital has 1 runway; the longest is 91 ft. See the Runways section for headings, surface, and lighting.
Where is 99MN?
Mayo Clinic St Marys Hospital is in Rochester, MN, at an elevation of 1,166 ft MSL. Coordinates: 44.0198, -92.4831.
More about 99MN
Weather is live from the Aviation Weather Center; airport facility data is from the FAA NASR (28-day cycle). For planning and education only; always verify against official sources. Open 99MN in a full tool: METAR/TAF decoder, crosswind calculator, sun & night times, or the density altitude calculator. Planning from here? Find the nearest airport with fuel or an approach, or check whether an IFR alternate is required.
Something here wrong or out of date? Report a data problem.