San Isidro Air Base (MDSI)
Medium airport · San Isidro, Distrito Nacional, Dominican Republic
Airport data
| Name | San Isidro Air Base |
|---|---|
| ICAO | MDSI |
| Elevation | 111 ft (34 m) above mean sea level |
| Coordinates | N 18°30'13" W 69°45'42" 18.50370, -69.76170 |
| Location | San Isidro, Distrito Nacional, Dominican Republic |
| Scheduled service | No |
Runways
| Runway | Length | Width | Surface | Lighted |
|---|---|---|---|---|
| 03/21 | 7,000 ft (2134 m) | 200 ft | ASP | Yes |
San Isidro Air Base at a glance
San Isidro Air Base is a medium airport in San Isidro, Distrito Nacional, Dominican Republic. The field elevation of 111 ft (34 m) is the number every arriving pilot dials against QNH — circuit heights and initial approach altitudes at MDSI are all figured from it. There is no scheduled airline service listed here — typical traffic is general aviation, training and local operations.
The single runway, 03/21, offers 7,000 ft (2134 m) of asp surface, with runway lighting for night operations. Runway numbers give magnetic orientation: runway 03 points roughly 30° magnetic.
For the weather side of planning, the live METAR and TAF page for MDSI shows the current observation decoded line by line — wind on an instrument dial, visibility, cloud layers and the resulting flight rules — refreshed continuously from official sources.
Nearest airports to San Isidro Air Base
Distances are great-circle, measured from the field reference point — planning distances along airways or roads will run longer.
| Airport | Code | Distance |
|---|---|---|
| Las Américas International Airport | MDSD | 13 km (7 NM) |
| La Isabela International Airport | MDJB | 25 km (14 NM) |
| Samaná El Catey International Airport | MDCY | 85 km (46 NM) |
| Casa De Campo International Airport | MDLR | 90 km (49 NM) |
| Cibao International Airport | MDST | 134 km (72 NM) |
Flight-planning notes for San Isidro Air Base
Density altitude is the quiet performance-killer at any field: on a hot day the 111 ft field elevation of San Isidro Air Base can translate into a substantially higher density altitude, stretching take-off rolls and flattening climb rates — run the numbers rather than trusting the feel of a standard day. Expect published instrument procedures, controlled airspace and clearance requirements; slots and handling may apply to general aviation traffic.
This entry is one of 10 airports and airfields we list for Dominican Republic — the country index on the airports hub links the rest. Coordinates above are given in both DMS and decimal degrees so they can go straight into a GPS, a flight planner or a chart plot without conversion.
Where this data comes from
The reference layer behind this page builds on the OurAirports dataset — a public-domain, community-maintained register of the world's airports that many flight planners and apps rely on — with equity records preserved from documented historical listings where the dataset is silent. Figures are carried as published: elevations as surveyed, coordinates as filed, runway dimensions as recorded. Nothing is estimated to fill a gap, and the whole layer regenerates from source on every site build, so corrections upstream arrive here automatically.
Frequently asked questions about San Isidro Air Base
What is the ICAO code of San Isidro Air Base?
The ICAO identifier of San Isidro Air Base is MDSI, and it has no IATA code assigned. The ICAO code is the one used in flight plans, METAR reports and aeronautical charts.
How high is San Isidro Air Base above sea level?
San Isidro Air Base sits at an elevation of 111 feet (34 metres) above mean sea level. Field elevation is the reference for pattern altitudes and for setting the altimeter on the ground.
Where exactly is San Isidro Air Base located?
The airport lies at 18.5037, -69.7617 — in San Isidro, Distrito Nacional, Dominican Republic, in the northern hemisphere. The closest listed field is Las Américas International Airport, about 13 km away.
Does MDSI publish METAR weather reports?
Where the station reports, the current METAR and TAF for MDSI appear on its live weather page on this site, refreshed continuously from the US NWS Aviation Weather Center feed.
How long is the runway at San Isidro Air Base?
San Isidro Air Base has one runway. The longest, 03/21, measures 7,000 ft (2134 m) with a ASP surface.