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sensors Mode-S transponder

A27DD1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N26NA · GIPPSAERO GA-8 Airvan · operated by NATRON AIR INC

Hex
A27DD1
Octal
50476721
Decimal
10,649,041
Country
US
Tail
N26NA
Type
GA8
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
177
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S A27DD1.

Country allocation

The ICAO 24-bit address A27DD1 falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 1 distinct

Callsign Airline Flights Last seen
N26NA - 177 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N26NA - Jul 26, 21:50 UTCJul 26, 22:15 UTC25m
2026-07-26 N26NA - Jul 26, 20:05 UTCJul 26, 20:55 UTC50m
2026-07-26 N26NA - Jul 26, 18:10 UTCJul 26, 19:10 UTC1h 0m
2026-07-26 N26NA - Jul 26, 17:05 UTCJul 26, 17:35 UTC30m
2026-07-25 N26NA - Jul 25, 03:00 UTCJul 25, 05:10 UTC2h 10m
2026-07-25 N26NA - Jul 25, 01:25 UTCJul 25, 01:55 UTC30m
2026-07-25 N26NA - Jul 25, 00:05 UTCJul 25, 00:40 UTC35m
2026-07-24 N26NA - Jul 24, 22:10 UTCJul 24, 22:45 UTC35m
2026-07-24 N26NA - Jul 24, 20:00 UTCJul 24, 20:50 UTC50m
2026-07-24 N26NA - Jul 24, 18:40 UTCJul 24, 19:20 UTC40m
2026-07-24 N26NA - Jul 24, 17:00 UTCJul 24, 17:40 UTC40m
2026-07-24 N26NA - Jul 24, 15:30 UTCJul 24, 16:25 UTC55m
2026-07-22 N26NA - Jul 22, 21:55 UTCJul 22, 22:25 UTC30m
2026-07-22 N26NA - Jul 22, 20:05 UTCJul 22, 20:45 UTC40m
2026-07-21 N26NA - Jul 21, 17:50 UTCJul 21, 18:20 UTC30m
2026-07-21 N26NA - Jul 21, 16:50 UTCJul 21, 17:15 UTC25m
2026-07-21 N26NA - Jul 21, 01:20 UTCJul 21, 02:15 UTC55m
2026-07-20 N26NA - Jul 20, 22:40 UTCJul 21, 00:20 UTC1h 40m
2026-07-20 N26NA - Jul 20, 21:25 UTCJul 20, 21:55 UTC30m
2026-07-18 N26NA - Jul 18, 00:04 UTCJul 18, 02:35 UTC2h 30m
2026-07-17 N26NA - Jul 17, 22:10 UTCJul 17, 23:20 UTC1h 10m
2026-07-17 N26NA - Jul 17, 20:55 UTCJul 17, 21:39 UTC45m
2026-07-17 N26NA - Jul 17, 19:05 UTCJul 17, 19:45 UTC40m
2026-07-16 N26NA - Jul 16, 20:35 UTCJul 16, 21:10 UTC35m
2026-07-16 N26NA - Jul 16, 19:05 UTCJul 16, 19:30 UTC25m
2026-07-16 N26NA - Jul 16, 17:00 UTCJul 16, 18:15 UTC1h 15m
2026-07-15 N26NA - Jul 15, 20:20 UTCJul 15, 21:15 UTC55m
2026-07-15 N26NA - Jul 15, 15:35 UTCJul 15, 19:25 UTC3h 50m
2026-07-14 N26NA SXQ → SXQ Jul 14, 21:45 UTCJul 14, 23:00 UTC1h 14m
2026-07-13 N26NA - Jul 13, 20:15 UTCJul 13, 21:15 UTC1h 0m
2026-07-13 N26NA - Jul 13, 18:50 UTCJul 13, 19:25 UTC35m
2026-07-13 N26NA - Jul 13, 17:45 UTCJul 13, 18:10 UTC25m
2026-07-13 N26NA - Jul 13, 16:45 UTCJul 13, 17:15 UTC30m
2026-07-13 N26NA SXQ → SXQ Jul 13, 00:15 UTCJul 13, 01:40 UTC1h 25m
2026-07-12 N26NA SXQ → SXQ Jul 12, 17:30 UTCJul 12, 18:15 UTC45m
2026-07-11 N26NA - Jul 11, 02:05 UTCJul 11, 02:50 UTC45m
2026-07-11 N26NA - Jul 11, 00:55 UTCJul 11, 01:20 UTC25m
2026-07-10 N26NA - Jul 10, 23:40 UTCJul 11, 00:25 UTC45m
2026-07-10 N26NA - Jul 10, 22:10 UTCJul 10, 22:40 UTC30m
2026-07-10 N26NA SXQ → SXQ Jul 10, 17:05 UTCJul 10, 18:20 UTC1h 15m
2026-07-09 N26NA - Jul 9, 22:45 UTCJul 9, 23:40 UTC55m
2026-07-09 N26NA - Jul 9, 21:10 UTCJul 9, 21:40 UTC30m
2026-07-09 N26NA - Jul 9, 17:05 UTCJul 9, 18:20 UTC1h 15m
2026-07-08 N26NA - Jul 8, 21:35 UTCJul 8, 22:30 UTC55m
2026-07-08 N26NA - Jul 8, 20:20 UTCJul 8, 20:50 UTC30m
2026-07-07 N26NA - Jul 7, 21:35 UTCJul 7, 22:30 UTC55m
2026-07-07 N26NA - Jul 7, 20:10 UTCJul 7, 20:45 UTC35m
2026-07-07 N26NA SXQ → SXQ Jul 7, 18:40 UTCJul 7, 19:30 UTC50m
2026-07-07 N26NA - Jul 7, 17:00 UTCJul 7, 18:10 UTC1h 10m
2026-07-06 N26NA - Jul 6, 21:25 UTCJul 6, 22:20 UTC55m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the N26NA page for operator, model, and routing details .

Mode-S A27DD1 frequently asked

What is Mode-S code A27DD1?
A27DD1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N26NA.
Where is Mode-S A27DD1 registered?
Mode-S code A27DD1 is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is A27DD1 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A27DD1, octal 50476721, decimal 10,649,041.
What flights does A27DD1 operate?
Mode-S A27DD1 has broadcast 1 distinct callsign, including N26NA.