Apparatus

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sensors Mode-S transponder

A29D27

ICAO 24-bit transponder address · allocated to United States

Hex
A29D27
Octal
50516447
Decimal
10,657,063
Country
US
No current signal · last broadcast 2d ago
Flights observed
96
Distinct callsigns
2
Country
US
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S A29D27.

Country allocation

The ICAO 24-bit address A29D27 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 2 distinct

Callsign Airline Flights Last seen
EPI119 - 82 2026-06-19
N268EP - 14 2026-05-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-19 EPI119 - Jun 19, 23:59 UTCJun 20, 01:19 UTC1h 20m
2026-06-18 EPI119 - Jun 18, 16:55 UTCJun 18, 17:35 UTC40m
2026-06-18 EPI119 - Jun 18, 14:45 UTCJun 18, 15:55 UTC1h 10m
2026-06-16 EPI119 - Jun 16, 21:30 UTCJun 16, 23:40 UTC2h 10m
2026-06-16 EPI119 ADS → ADS Jun 16, 17:59 UTCJun 16, 19:19 UTC1h 20m
2026-06-16 EPI119 ADS → ADS Jun 16, 15:45 UTCJun 16, 16:25 UTC40m
2026-06-15 EPI119 ADS → ADS Jun 15, 21:04 UTCJun 15, 22:40 UTC1h 35m
2026-06-15 EPI119 - Jun 15, 19:39 UTCJun 15, 20:20 UTC40m
2026-06-15 EPI119 ADS → ADS Jun 15, 17:20 UTCJun 15, 18:55 UTC1h 35m
2026-06-15 EPI119 - Jun 15, 03:30 UTCJun 15, 03:55 UTC25m
2026-06-13 EPI119 - Jun 13, 18:30 UTCJun 13, 20:20 UTC1h 50m
2026-06-12 EPI119 ADS → ADS Jun 12, 13:55 UTCJun 12, 14:30 UTC35m
2026-06-11 EPI119 - Jun 11, 02:25 UTCJun 11, 03:05 UTC40m
2026-06-09 EPI119 ADS → ADS Jun 9, 18:20 UTCJun 9, 18:55 UTC35m
2026-06-09 EPI119 - Jun 9, 15:40 UTCJun 9, 15:50 UTC10m
2026-06-08 EPI119 - Jun 8, 20:20 UTCJun 8, 22:10 UTC1h 50m
2026-06-06 EPI119 - Jun 6, 18:45 UTCJun 6, 20:30 UTC1h 45m
2026-06-06 EPI119 ADS → ADS Jun 6, 15:59 UTCJun 6, 16:39 UTC40m
2026-06-05 EPI119 - Jun 5, 22:45 UTCJun 6, 00:15 UTC1h 30m
2026-06-02 EPI119 - Jun 2, 17:00 UTCJun 2, 18:30 UTC1h 30m
2026-05-31 EPI119 - May 31, 21:10 UTCMay 31, 21:45 UTC35m
2026-05-31 EPI119 ADS → ADS May 31, 18:50 UTCMay 31, 20:10 UTC1h 20m
2026-05-30 EPI119 - May 30, 18:30 UTCMay 30, 19:50 UTC1h 20m
2026-05-30 EPI119 - May 30, 14:00 UTCMay 30, 15:35 UTC1h 35m
2026-05-29 EPI119 ADS → ADS May 29, 23:40 UTCMay 30, 01:05 UTC1h 25m
2026-05-29 EPI119 - May 29, 16:15 UTCMay 29, 17:05 UTC50m
2026-05-29 EPI119 - May 29, 02:25 UTCMay 29, 03:40 UTC1h 15m
2026-05-28 EPI119 - May 28, 16:20 UTCMay 28, 16:55 UTC35m
2026-05-25 EPI119 - May 25, 16:25 UTCMay 25, 16:50 UTC25m
2026-05-25 EPI119 - May 25, 15:20 UTCMay 25, 15:50 UTC30m
2026-05-22 EPI119 - May 22, 21:50 UTCMay 22, 22:05 UTC15m
2026-05-22 EPI119 - May 22, 20:35 UTCMay 22, 20:45 UTC10m
2026-05-21 EPI119 - May 21, 01:10 UTCMay 21, 02:35 UTC1h 25m
2026-05-20 EPI119 - May 20, 21:55 UTCMay 20, 23:15 UTC1h 20m
2026-05-20 EPI119 - May 20, 20:15 UTCMay 20, 20:50 UTC35m
2026-05-20 EPI119 - May 20, 18:55 UTCMay 20, 19:05 UTC10m
2026-05-20 EPI119 - May 20, 15:30 UTCMay 20, 16:20 UTC50m
2026-05-18 EPI119 - May 18, 23:15 UTCMay 18, 23:50 UTC35m
2026-05-18 EPI119 - May 18, 22:50 UTCMay 18, 23:10 UTC20m
2026-05-18 EPI119 - May 18, 20:15 UTCMay 18, 21:35 UTC1h 20m
2026-05-18 EPI119 - May 18, 16:40 UTCMay 18, 17:40 UTC1h 0m
2026-05-18 EPI119 - May 18, 14:30 UTCMay 18, 15:45 UTC1h 15m
2026-05-17 EPI119 - May 17, 19:50 UTCMay 17, 20:50 UTC1h 0m
2026-05-17 EPI119 - May 17, 17:35 UTCMay 17, 18:30 UTC55m
2026-05-16 EPI119 - May 16, 18:25 UTCMay 16, 19:15 UTC50m
2026-05-16 EPI119 - May 16, 16:05 UTCMay 16, 16:55 UTC50m
2026-05-16 EPI119 - May 16, 14:05 UTCMay 16, 15:16 UTC1h 10m
2026-05-15 EPI119 - May 15, 20:00 UTCMay 15, 22:10 UTC2h 10m
2026-05-15 EPI119 - May 15, 16:10 UTCMay 15, 16:55 UTC45m
2026-05-14 EPI119 - May 14, 22:20 UTCMay 14, 23:45 UTC1h 25m

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.

Mode-S A29D27 frequently asked

What is Mode-S code A29D27?
A29D27 is an ICAO 24-bit transponder address. Allocated to United States.
Where is Mode-S A29D27 registered?
Mode-S code A29D27 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 A29D27 broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A29D27, octal 50516447, decimal 10,657,063.
What flights does A29D27 operate?
Mode-S A29D27 has broadcast 2 distinct callsigns, including EPI119, N268EP.