Apparatus

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sensors Mode-S transponder

AABA81

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N7901A · BOEING 737-800 · operated by BANK OF UTAH TRUSTEE

Hex
AABA81
Octal
52535201
Decimal
11,188,865
Country
US
Tail
N7901A
Type
B738
Broadcasting now · callsign SCX3057 · 37,000 ft
Flights observed
318
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Current position

AABA81 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AABA81 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
SCX3048 - 12 2026-06-27
SCX3019 Sun Country Airlines 10 2026-06-10
SCX3056 - 9 2026-06-25
SCX3006 - 9 2026-06-30
SCX3073 Sun Country Airlines 8 2026-07-08
SCX3058 - 8 2026-07-08
SCX3047 - 8 2026-07-12
SCX3041 - 8 2026-06-29
SCX3033 Sun Country Airlines 8 2026-06-22
SCX3049 - 7 2026-07-11
SCX3046 Sun Country Airlines 7 2026-05-14
SCX3090 - 6 2026-06-28
SCX3052 Sun Country Airlines 6 2026-05-06
SCX3037 Sun Country Airlines 6 2026-06-30
SCX3022 - 6 2026-07-01
SCX3018 Sun Country Airlines 6 2026-06-06
SCX3013 - 6 2026-06-15
SCX3005 Sun Country Airlines 6 2026-05-24
SCX3089 Sun Country Airlines 5 2026-06-23
SCX3060 Sun Country Airlines 5 2026-05-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SCX3025 - Jul 14, 04:25 UTCJul 14, 04:40 UTC15m
2026-07-13 SCX3025 DEN → DAL Jul 13, 23:55 UTCJul 14, 01:50 UTC1h 55m
2026-07-13 SCX3039 - Jul 13, 20:00 UTCJul 13, 22:15 UTC2h 15m
2026-07-13 SCX6015 BWI → MSP Jul 13, 17:05 UTCJul 13, 18:10 UTC1h 5m
2026-07-12 SCX3047 - Jul 12, 10:30 UTCJul 12, 12:40 UTC2h 10m
2026-07-12 SCX3024 - Jul 12, 07:40 UTCJul 12, 08:50 UTC1h 10m
2026-07-12 SCX3064 BWI → BNA Jul 12, 04:30 UTCJul 12, 06:10 UTC1h 40m
2026-07-12 SCX3042 - Jul 12, 00:35 UTCJul 12, 01:40 UTC1h 5m
2026-07-11 SCX3049 - Jul 11, 17:50 UTCJul 11, 18:55 UTC1h 5m
2026-07-11 SCX6501 - Jul 11, 14:35 UTCJul 11, 15:45 UTC1h 10m
2026-07-10 SCX6050 CVG → MSP Jul 10, 12:55 UTCJul 10, 16:30 UTC3h 35m
2026-07-09 SCX3038 GEG → SBD Jul 9, 01:20 UTCJul 9, 03:25 UTC2h 5m
2026-07-08 SCX3011 SBD → GEG Jul 8, 21:40 UTCJul 8, 23:45 UTC2h 5m
2026-07-08 SCX3058 MSY → SBD Jul 8, 10:25 UTCJul 8, 13:35 UTC3h 10m
2026-07-08 SCX3073 CVG → PDX Jul 8, 05:10 UTCJul 8, 06:45 UTC1h 35m
2026-07-07 SCX4086 - Jul 7, 03:30 UTCJul 7, 06:00 UTC2h 30m
2026-07-06 SCX3067 - Jul 6, 06:10 UTCJul 6, 06:20 UTC10m
2026-07-06 SCX3067 - Jul 6, 05:00 UTCJul 6, 05:30 UTC30m
2026-07-03 SCX3099 - Jul 3, 04:45 UTCJul 3, 05:25 UTC40m
2026-07-01 SCX3022 STL → AFW Jul 1, 07:40 UTCJul 1, 08:55 UTC1h 15m
2026-07-01 SCX3057 - Jul 1, 04:50 UTCJul 1, 06:05 UTC1h 15m
2026-06-30 SCX3092 - Jun 30, 22:55 UTCJul 1, 02:05 UTC3h 10m
2026-06-30 SCX3009 FAI → PDX Jun 30, 17:20 UTCJun 30, 20:40 UTC3h 20m
2026-06-30 SCX3037 LAL → TOL Jun 30, 12:00 UTCJun 30, 15:25 UTC3h 25m
2026-06-30 SCX3032 - Jun 30, 05:15 UTCJun 30, 08:35 UTC3h 20m
2026-06-30 SCX3006 - Jun 30, 00:35 UTCJun 30, 01:45 UTC1h 11m
2026-06-29 SCX3041 - Jun 29, 21:09 UTCJun 29, 22:30 UTC1h 20m
2026-06-29 SCX3058 MSY → SBD Jun 29, 10:04 UTCJun 29, 13:34 UTC3h 30m
2026-06-29 SCX3073 CVG → PDX Jun 29, 05:50 UTCJun 29, 07:20 UTC1h 30m
2026-06-28 SCX3090 - Jun 28, 14:30 UTCJun 28, 17:39 UTC3h 10m
2026-06-28 SCX3095 - Jun 28, 01:15 UTCJun 28, 05:34 UTC4h 20m
2026-06-27 SCX3042 - Jun 27, 21:55 UTCJun 27, 22:55 UTC1h 0m
2026-06-27 SCX3049 - Jun 27, 17:49 UTCJun 27, 18:49 UTC1h 0m
2026-06-27 SCX3047 - Jun 27, 10:29 UTCJun 27, 12:34 UTC2h 5m
2026-06-27 SCX3048 - Jun 27, 04:09 UTCJun 27, 06:25 UTC2h 15m
2026-06-26 SCX3008 - Jun 26, 22:44 UTCJun 27, 00:34 UTC1h 50m
2026-06-26 SCX3097 BWI → STL Jun 26, 20:04 UTCJun 26, 20:55 UTC50m
2026-06-26 SCX3086 ABQ → CVG Jun 26, 07:30 UTCJun 26, 09:59 UTC2h 30m
2026-06-26 SCX3067 AFW → TOL Jun 26, 04:59 UTCJun 26, 06:19 UTC1h 20m
2026-06-26 SCX3006 - Jun 26, 00:35 UTCJun 26, 02:05 UTC1h 30m
2026-06-25 SCX3041 SBD → ABQ Jun 25, 21:05 UTCJun 25, 23:19 UTC2h 15m
2026-06-25 SCX3056 AUS → SBD Jun 25, 14:50 UTCJun 25, 17:25 UTC2h 35m
2026-06-25 SCX3077 LAS → MCI Jun 25, 04:14 UTCJun 25, 06:35 UTC2h 20m
2026-06-24 SCX3081 MSP → SBD Jun 24, 22:39 UTCJun 25, 02:14 UTC3h 35m
2026-06-24 SCX3084 SFO → LAL Jun 24, 02:30 UTCJun 24, 04:05 UTC1h 35m
2026-06-23 SCX3017 FAI → PDX Jun 23, 21:39 UTCJun 23, 23:19 UTC1h 40m
2026-06-23 SCX3079 BWI → PHX Jun 23, 18:34 UTCJun 23, 20:10 UTC1h 35m
2026-06-23 SCX3080 BWI → BNA Jun 23, 11:04 UTCJun 23, 12:25 UTC1h 20m
2026-06-23 SCX3089 PDX → FAI Jun 23, 04:25 UTCJun 23, 05:49 UTC1h 25m
2026-06-22 SCX3033 MSP → SBD Jun 22, 21:54 UTCJun 22, 23:14 UTC1h 20m

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 N7901A page for operator, model, and routing details .

Mode-S AABA81 frequently asked

What is Mode-S code AABA81?
AABA81 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N7901A.
Where is Mode-S AABA81 registered?
Mode-S code AABA81 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 AABA81 broadcasting right now?
Yes. Mode-S AABA81 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AABA81, octal 52535201, decimal 11,188,865.
What flights does AABA81 operate?
Mode-S AABA81 has broadcast 20 distinct callsigns, including SCX3048, SCX3019, SCX3056, SCX3006, SCX3073.