Apparatus

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sensors Mode-S transponder

AC7E1C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N904AV · operated by UMB BANK NA TRUSTEE

Hex
AC7E1C
Octal
53077034
Decimal
11,304,476
Country
US
Tail
N904AV
Type
A20N
No current signal · last broadcast 2h ago
Flights observed
31
Distinct callsigns
15
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S AC7E1C.

Country allocation

The ICAO 24-bit address AC7E1C 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 15 distinct

Callsign Airline Flights Last seen
TAI562 Avianca El Salvador 4 2026-04-17
TAI591 Avianca El Salvador 3 2026-04-17
TAI568 Avianca El Salvador 3 2026-04-18
TAI563 Avianca El Salvador 3 2026-04-18
TAI521 Avianca El Salvador 3 2026-04-15
TAI520 Avianca El Salvador 3 2026-04-15
TAI590 Avianca El Salvador 2 2026-04-17
TAI451 Avianca El Salvador 2 2026-04-16
TAI450 Avianca El Salvador 2 2026-04-16
TAI580 Avianca El Salvador 1 2026-04-17
TAI569 Avianca El Salvador 1 2026-04-18
TAI431 Avianca El Salvador 1 2026-04-16
TAI382 Avianca El Salvador 1 2026-04-15
N904AV - 1 2026-04-14
LRC632 LACSA 1 2026-04-16

Recent flights last 31

DateFlightRouteTakeoffLandingDuration
2026-04-18 TAI569 JFK → SAL Apr 18, 11:15 UTCApr 18, 15:10 UTC3h 55m
2026-04-18 TAI568 SAL → JFK Apr 18, 07:25 UTCApr 18, 09:10 UTC1h 45m
2026-04-18 TAI568 SAL → JFK Apr 18, 05:25 UTCApr 18, 07:20 UTC1h 55m
2026-04-18 TAI568 SAL → JFK Apr 18, 04:50 UTCApr 18, 09:10 UTC4h 20m
2026-04-18 TAI563 SFO → SAL Apr 18, 01:25 UTCApr 18, 02:35 UTC1h 10m
2026-04-17 TAI563 SFO → SAL Apr 17, 23:25 UTCApr 18, 01:20 UTC1h 55m
2026-04-17 TAI563 SFO → SAL Apr 17, 21:40 UTCApr 17, 23:20 UTC1h 40m
2026-04-17 TAI562 SAL → SFO Apr 17, 19:25 UTCApr 17, 19:35 UTC10m
2026-04-17 TAI562 SAL → SFO Apr 17, 17:25 UTCApr 17, 19:20 UTC1h 55m
2026-04-17 TAI562 SAL → SFO Apr 17, 15:20 UTCApr 17, 15:40 UTC20m
2026-04-17 TAI562 SAL → SFO Apr 17, 14:05 UTCApr 17, 15:15 UTC1h 9m
2026-04-17 TAI591 IAD → SAL Apr 17, 11:20 UTCApr 17, 12:00 UTC40m
2026-04-17 TAI591 IAD → SAL Apr 17, 09:20 UTCApr 17, 11:15 UTC1h 55m
2026-04-17 TAI591 IAD → SAL Apr 17, 08:20 UTCApr 17, 09:15 UTC55m
2026-04-17 TAI590 SAL → IAD Apr 17, 05:20 UTCApr 17, 06:35 UTC1h 15m
2026-04-17 TAI590 SAL → IAD Apr 17, 03:20 UTCApr 17, 05:15 UTC1h 56m
2026-04-17 TAI580 SAL → IAD Apr 17, 02:45 UTCApr 17, 03:15 UTC30m
2026-04-16 TAI431 MEX → SAL Apr 16, 23:20 UTCApr 17, 00:35 UTC1h 15m
2026-04-16 LRC632 SJO → MEX Apr 16, 19:15 UTCApr 16, 21:10 UTC1h 55m
2026-04-16 TAI451 MIA → MGA Apr 16, 12:05 UTCApr 16, 12:14 UTC10m
2026-04-16 TAI451 MIA → MGA Apr 16, 10:34 UTCApr 16, 11:04 UTC30m
2026-04-16 TAI450 MGA → MIA Apr 16, 03:14 UTCApr 16, 03:45 UTC30m
2026-04-16 TAI450 MGA → MIA Apr 16, 01:45 UTCApr 16, 02:04 UTC20m
2026-04-15 TAI382 BOG → SAL Apr 15, 19:05 UTCApr 15, 19:25 UTC20m
2026-04-15 TAI521 LAX → SAL Apr 15, 11:10 UTCApr 15, 12:25 UTC1h 15m
2026-04-15 TAI521 LAX → SAL Apr 15, 09:00 UTCApr 15, 10:55 UTC1h 55m
2026-04-15 TAI521 LAX → SAL Apr 15, 08:10 UTCApr 15, 08:55 UTC45m
2026-04-15 TAI520 SAL → LAX Apr 15, 03:15 UTCApr 15, 04:45 UTC1h 30m
2026-04-15 TAI520 SAL → LAX Apr 15, 00:55 UTCApr 15, 01:35 UTC40m
2026-04-14 TAI520 SAL → LAX Apr 14, 23:55 UTCApr 15, 00:10 UTC15m
2026-04-14 N904AV - Apr 14, 15:55 UTCApr 14, 16:05 UTC10m

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 N904AV page for operator, model, and routing details .

Mode-S AC7E1C frequently asked

What is Mode-S code AC7E1C?
AC7E1C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N904AV.
Where is Mode-S AC7E1C registered?
Mode-S code AC7E1C 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 AC7E1C broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC7E1C, octal 53077034, decimal 11,304,476.
What flights does AC7E1C operate?
Mode-S AC7E1C has broadcast 15 distinct callsigns, including TAI562, TAI591, TAI568, TAI563, TAI521.