Reference only — not for real-world navigation.
RJTJ
Iruma Air Base · Sayama
Key Facts
Essential technical summary for MSFS 2020/2024 and X-Plane.
ILS Approach StatusILS DATA NOT IN DATABASE
Field Elevation
295 ft / 90 m
Transition Altitude
14,000 ft
Primary Channel
TWR 126.20 MHz (TWR)
Live Conversion
inHg
hPa
Runway Summary (Quick-Links)
17/35 · 6,562 ft · AsphaltLIGHTEDFlight Planning
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Welcome to the technical flight briefing for Iruma Air Base (RJTJ), located in Sayama, Japan. As a vital hub for Microsoft Flight Simulator 2024, MSFS 2020, and X-Plane pilots, this facility features 1 active runway with a maximum elevation of 295 ft. Please note that this field primarily supports VFR and visual approach procedures.Reference the data below for primary communication channels and detailed runway characteristics. Pilots should observe a Transition Altitude of 14,000 ft verified for this field for altimeter reset procedures.
Full Name
Iruma Air Base
ICAO / IATA
RJTJ / —
Municipality
Sayama
Country
Region
JP-13 — Tōkyō Prefecture
GPS Coordinates
Transition Altitude
14,000 ft
Elevation
295 ft
Wikipedia
Pilot Toolbox
External charts, live tracking and weather reports.
Runway 17 / 35
LIGHTED
Runway Length: 6,562 ft / 2,000 m
Runway Width: 148 ft / 45 m
Surface Type: Asphalt
Heading: 159.9° / 339.9°
Runway Width: 148 ft / 45 m
Surface Type: Asphalt
Heading: 159.9° / 339.9°
RWY 17 (159.9°)
No ILS / Visual Only
RWY 35 (339.9°)
No ILS / Visual Only
APP YOKOTA APP
118.30 MHz
DEP YOKOTA DEP
122.10 MHz
GND GND
27.58 MHz
TWR TWR
126.20 MHz
Base Airport Data: OurAirports (Public Domain)
Instrument Approach Data: AIP 2026 Researched · Cycle: Jan 2026