Apparatus

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sensors Mode-S transponder

AC7E18

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N904AR · BOEING 747-400 · operated by UMB BANK NA TRUSTEE

Hex
AC7E18
Octal
53077030
Decimal
11,304,472
Country
US
Tail
N904AR
Type
B744
No current signal · last broadcast 1h ago
Flights observed
101
Distinct callsigns
7
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S AC7E18.

Country allocation

The ICAO 24-bit address AC7E18 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 7 distinct

Callsign Airline Flights Last seen
KYE9520 SkyLease Cargo 62 2026-05-29
KYE9521 SkyLease Cargo 19 2026-05-29
KYE9525 SkyLease Cargo 10 2026-04-25
KYE7551 SkyLease Cargo 4 2026-05-14
KYE7522 SkyLease Cargo 3 2026-05-15
KYE4514 SkyLease Cargo 2 2026-05-17
KYE4515 SkyLease Cargo 1 2026-05-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 KYE9520 ANC → MIA May 29, 23:10 UTCMay 30, 05:05 UTC5h 55m
2026-05-29 KYE9520 ANC → MIA May 29, 08:25 UTCMay 29, 21:00 UTC12h 35m
2026-05-29 KYE9521 MIA → ANC May 29, 00:25 UTCMay 29, 04:15 UTC3h 50m
2026-05-28 KYE9521 MIA → ANC May 28, 09:20 UTCMay 28, 21:50 UTC12h 30m
2026-05-27 KYE9520 ANC → MIA May 27, 18:00 UTCMay 27, 23:30 UTC5h 30m
2026-05-26 KYE9520 ANC → MIA May 26, 22:29 UTCMay 27, 16:15 UTC17h 46m
2026-05-26 KYE9520 ANC → MIA May 26, 20:05 UTCMay 27, 16:15 UTC20h 11m
2026-05-26 KYE9520 ANC → MIA May 26, 18:10 UTCMay 27, 16:15 UTC22h 6m
2026-05-26 KYE9521 MIA → ANC May 26, 12:24 UTCMay 27, 10:35 UTC22h 10m
2026-05-26 KYE9521 MIA → ANC May 26, 05:20 UTCMay 26, 10:25 UTC5h 5m
2026-05-25 KYE9520 ANC → MIA May 25, 02:20 UTCMay 25, 05:25 UTC3h 5m
2026-05-24 KYE9520 ANC → MIA May 24, 23:00 UTCMay 24, 23:20 UTC20m
2026-05-24 KYE9521 MIA → ANC May 24, 00:10 UTCMay 24, 17:30 UTC17h 20m
2026-05-23 KYE9521 MIA → ANC May 23, 09:30 UTCMay 23, 21:25 UTC11h 55m
2026-05-22 KYE9520 ANC → MIA May 22, 23:05 UTCMay 23, 04:35 UTC5h 29m
2026-05-22 KYE9520 ANC → MIA May 22, 04:00 UTCMay 22, 21:35 UTC17h 35m
2026-05-22 KYE9520 ANC → MIA May 22, 00:10 UTCMay 22, 21:35 UTC21h 25m
2026-05-21 KYE9521 MIA → ANC May 21, 09:00 UTCMay 21, 21:50 UTC12h 50m
2026-05-20 KYE9520 ANC → MIA May 20, 21:45 UTCMay 21, 03:05 UTC5h 20m
2026-05-20 KYE9520 ANC → MIA May 20, 00:20 UTCMay 20, 19:50 UTC19h 31m
2026-05-19 KYE9521 MIA → ANC May 19, 08:25 UTCMay 19, 21:25 UTC13h 0m
2026-05-18 KYE9520 ANC → MIA May 18, 23:30 UTCMay 19, 03:40 UTC4h 10m
2026-05-18 KYE9520 ANC → MIA May 18, 14:30 UTCMay 18, 21:45 UTC7h 14m
2026-05-18 KYE9520 ANC → MIA May 18, 00:05 UTCMay 18, 21:45 UTC21h 39m
2026-05-17 KYE9520 ANC → MIA May 17, 23:55 UTCMay 18, 21:45 UTC21h 49m
2026-05-17 KYE9521 MIA → ANC May 17, 09:55 UTCMay 17, 22:15 UTC12h 20m
2026-05-17 KYE4514 UIO → MIA May 17, 04:25 UTCMay 17, 07:05 UTC2h 40m
2026-05-16 KYE4514 UIO → MIA May 16, 19:50 UTCMay 17, 00:50 UTC5h 0m
2026-05-16 KYE4515 EZE → SCL May 16, 05:00 UTCMay 16, 09:35 UTC4h 36m
2026-05-15 KYE7522 ANC → LAX May 15, 18:10 UTCMay 16, 01:45 UTC7h 35m
2026-05-14 KYE7522 ANC → LAX May 14, 21:30 UTCMay 15, 15:35 UTC18h 4m
2026-05-14 KYE7522 ANC → LAX May 14, 16:05 UTCMay 15, 15:35 UTC23h 29m
2026-05-14 KYE7551 ORD → ICN May 14, 15:40 UTCMay 15, 14:00 UTC22h 20m
2026-05-14 KYE7551 ORD → ICN May 14, 12:05 UTCMay 15, 08:45 UTC20h 40m
2026-05-14 KYE7551 ORD → ICN May 14, 11:35 UTCMay 15, 08:45 UTC21h 10m
2026-05-14 KYE7551 ORD → ICN May 14, 06:55 UTCMay 14, 07:25 UTC30m
2026-05-11 KYE9520 ANC → MIA May 11, 06:50 UTCMay 11, 07:15 UTC25m
2026-05-10 KYE9520 ANC → MIA May 10, 23:15 UTCMay 11, 04:05 UTC4h 50m
2026-05-10 KYE9520 ANC → MIA May 10, 14:20 UTCMay 10, 21:25 UTC7h 5m
2026-05-10 KYE9520 ANC → MIA May 10, 00:09 UTCMay 10, 21:25 UTC21h 15m
2026-05-09 KYE9521 MIA → ANC May 9, 09:30 UTCMay 9, 22:05 UTC12h 35m
2026-05-08 KYE9520 ANC → MIA May 8, 22:10 UTCMay 9, 03:30 UTC5h 20m
2026-05-08 KYE9520 ANC → MIA May 8, 02:04 UTCMay 8, 20:45 UTC18h 40m
2026-05-08 KYE9520 ANC → MIA May 8, 00:34 UTCMay 8, 20:45 UTC20h 10m
2026-05-07 KYE9521 MIA → ANC May 7, 10:05 UTCMay 7, 22:45 UTC12h 40m
2026-05-06 KYE9520 ANC → MIA May 6, 18:10 UTCMay 6, 23:30 UTC5h 20m
2026-05-06 KYE9520 ANC → MIA May 6, 09:20 UTCMay 6, 16:20 UTC7h 0m
2026-05-05 KYE9520 ANC → MIA May 5, 20:20 UTCMay 6, 16:20 UTC20h 0m
2026-05-05 KYE9521 MIA → ANC May 5, 04:55 UTCMay 5, 17:25 UTC12h 30m
2026-05-03 KYE9520 ANC → MIA May 3, 21:44 UTCMay 4, 02:30 UTC4h 45m

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 N904AR page for operator, model, and routing details .

Mode-S AC7E18 frequently asked

What is Mode-S code AC7E18?
AC7E18 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N904AR.
Where is Mode-S AC7E18 registered?
Mode-S code AC7E18 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 AC7E18 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC7E18, octal 53077030, decimal 11,304,472.
What flights does AC7E18 operate?
Mode-S AC7E18 has broadcast 7 distinct callsigns, including KYE9520, KYE9521, KYE9525, KYE7551, KYE7522.