Apparatus

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sensors Mode-S transponder

A6CE39

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N538AV · AIRBUS A-320 · operated by WILMINGTON TRUST CO TRUSTEE

Hex
A6CE39
Octal
51547071
Decimal
10,931,769
Country
US
Tail
N538AV
Type
A320
No current signal · last broadcast 1d ago
Flights observed
282
Distinct callsigns
20
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A6CE39.

Country allocation

The ICAO 24-bit address A6CE39 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 20 distinct

Callsign Airline Flights Last seen
GUG743 Aviateca 43 2026-05-28
GUG705 Aviateca 32 2026-05-28
GUG704 Aviateca 32 2026-05-28
GUG703 Aviateca 30 2026-05-28
GUG701 Aviateca 30 2026-05-28
GUG702 Aviateca 29 2026-05-28
GUG700 Aviateca 28 2026-05-28
GUG742 Aviateca 26 2026-05-28
TAI579 Avianca El Salvador 8 2026-05-29
TAI578 Avianca El Salvador 7 2026-05-27
TAI369 Avianca El Salvador 3 2026-05-26
TAI383 Avianca El Salvador 2 2026-04-20
TAI382 Avianca El Salvador 2 2026-04-21
AVA165 Avianca - Aerovias Nacionales de Colombia, S.A. 2 2026-04-21
TAI589 Avianca El Salvador 1 2026-04-30
TAI588 Avianca El Salvador 1 2026-04-29
TAI573 Avianca El Salvador 1 2026-05-19
TAI370 Avianca El Salvador 1 2026-05-21
GUG744 Aviateca 1 2026-05-17
AVA164 Avianca - Aerovias Nacionales de Colombia, S.A. 1 2026-04-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 TAI579 GUA → SAL May 29, 12:25 UTCMay 29, 12:40 UTC15m
2026-05-28 GUG742 BOG → GUA May 28, 20:00 UTCMay 28, 23:00 UTC3h 0m
2026-05-28 GUG743 GUA → BOG May 28, 18:05 UTCMay 28, 18:25 UTC20m
2026-05-28 GUG743 GUA → BOG May 28, 15:35 UTCMay 28, 16:35 UTC1h 0m
2026-05-28 GUG705 FRS → GUA May 28, 13:55 UTCMay 28, 14:15 UTC20m
2026-05-28 GUG704 GUA → FRS May 28, 12:05 UTCMay 28, 12:20 UTC15m
2026-05-28 GUG703 FRS → GUA May 28, 05:00 UTCMay 28, 05:25 UTC25m
2026-05-28 GUG702 GUA → FRS May 28, 03:30 UTCMay 28, 03:40 UTC10m
2026-05-28 GUG701 FRS → GUA May 28, 01:55 UTCMay 28, 02:20 UTC25m
2026-05-28 GUG700 GUA → FRS May 28, 00:15 UTCMay 28, 00:35 UTC20m
2026-05-27 GUG742 BOG → GUA May 27, 20:20 UTCMay 27, 23:05 UTC2h 45m
2026-05-27 GUG743 GUA → BOG May 27, 18:00 UTCMay 27, 18:20 UTC20m
2026-05-27 GUG743 GUA → BOG May 27, 15:35 UTCMay 27, 16:25 UTC50m
2026-05-27 GUG705 FRS → GUA May 27, 13:50 UTCMay 27, 14:15 UTC25m
2026-05-27 GUG704 GUA → FRS May 27, 12:05 UTCMay 27, 12:15 UTC10m
2026-05-27 TAI578 SAL → GUA May 27, 04:39 UTCMay 27, 04:55 UTC15m
2026-05-26 TAI369 SAL → MDE May 26, 16:00 UTCMay 26, 16:10 UTC10m
2026-05-25 TAI579 GUA → SAL May 25, 11:30 UTCMay 25, 11:45 UTC15m
2026-05-25 GUG703 FRS → GUA May 25, 05:15 UTCMay 25, 05:45 UTC30m
2026-05-25 GUG702 GUA → FRS May 25, 03:35 UTCMay 25, 03:45 UTC10m
2026-05-25 GUG701 FRS → GUA May 25, 02:15 UTCMay 25, 02:35 UTC20m
2026-05-24 GUG743 GUA → BOG May 24, 15:40 UTCMay 24, 16:40 UTC1h 0m
2026-05-24 GUG705 FRS → GUA May 24, 14:00 UTCMay 24, 14:25 UTC25m
2026-05-24 GUG704 GUA → FRS May 24, 12:20 UTCMay 24, 12:30 UTC10m
2026-05-24 GUG703 FRS → GUA May 24, 04:55 UTCMay 24, 05:25 UTC30m
2026-05-24 GUG702 GUA → FRS May 24, 03:25 UTCMay 24, 03:35 UTC10m
2026-05-24 GUG701 FRS → GUA May 24, 01:55 UTCMay 24, 02:20 UTC25m
2026-05-24 GUG700 GUA → FRS May 24, 00:15 UTCMay 24, 00:30 UTC15m
2026-05-23 GUG742 BOG → GUA May 23, 21:55 UTCMay 23, 22:55 UTC1h 0m
2026-05-23 GUG742 BOG → GUA May 23, 20:10 UTCMay 23, 20:25 UTC15m
2026-05-23 GUG743 GUA → BOG May 23, 18:05 UTCMay 23, 18:20 UTC16m
2026-05-23 GUG743 GUA → BOG May 23, 15:35 UTCMay 23, 16:30 UTC55m
2026-05-23 GUG705 FRS → GUA May 23, 13:50 UTCMay 23, 14:10 UTC20m
2026-05-23 GUG704 GUA → FRS May 23, 12:05 UTCMay 23, 12:15 UTC10m
2026-05-23 GUG703 FRS → GUA May 23, 05:25 UTCMay 23, 05:35 UTC10m
2026-05-23 GUG702 GUA → FRS May 23, 03:35 UTCMay 23, 03:45 UTC10m
2026-05-23 GUG701 FRS → GUA May 23, 02:10 UTCMay 23, 02:20 UTC10m
2026-05-23 GUG700 GUA → FRS May 23, 00:15 UTCMay 23, 00:35 UTC20m
2026-05-22 GUG742 BOG → GUA May 22, 22:10 UTCMay 22, 23:15 UTC1h 5m
2026-05-22 GUG742 BOG → GUA May 22, 20:30 UTCMay 22, 20:45 UTC15m
2026-05-22 GUG743 GUA → BOG May 22, 16:25 UTCMay 22, 16:40 UTC15m
2026-05-22 GUG743 GUA → BOG May 22, 15:40 UTCMay 22, 16:05 UTC25m
2026-05-22 GUG705 FRS → GUA May 22, 13:55 UTCMay 22, 14:15 UTC20m
2026-05-22 GUG704 GUA → FRS May 22, 12:10 UTCMay 22, 12:25 UTC15m
2026-05-22 TAI578 SAL → GUA May 22, 05:00 UTCMay 22, 05:20 UTC20m
2026-05-21 TAI370 MDE → SAL May 21, 16:20 UTCMay 21, 20:55 UTC4h 35m
2026-05-20 TAI369 SAL → MDE May 20, 16:00 UTCMay 20, 21:05 UTC5h 5m
2026-05-19 TAI573 GUA → SAL May 19, 16:05 UTCMay 19, 16:20 UTC15m
2026-05-19 GUG705 FRS → GUA May 19, 14:05 UTCMay 19, 14:20 UTC15m
2026-05-19 GUG704 GUA → FRS May 19, 12:10 UTCMay 19, 12:25 UTC15m

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 N538AV page for operator, model, and routing details .

Mode-S A6CE39 frequently asked

What is Mode-S code A6CE39?
A6CE39 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N538AV.
Where is Mode-S A6CE39 registered?
Mode-S code A6CE39 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 A6CE39 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A6CE39, octal 51547071, decimal 10,931,769.
What flights does A6CE39 operate?
Mode-S A6CE39 has broadcast 20 distinct callsigns, including GUG743, GUG705, GUG704, GUG703, GUG701.