Apparatus

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sensors Mode-S transponder

A74B1B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N5693A · BOEING 737-800 · operated by BANK OF UTAH TRUSTEE

Hex
A74B1B
Octal
51645433
Decimal
10,963,739
Country
US
Tail
N5693A
Type
B738
No current signal · last broadcast 1h ago
Flights observed
300
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A74B1B.

Country allocation

The ICAO 24-bit address A74B1B 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
SCX3055 - 11 2026-07-14
SCX3043 - 10 2026-07-02
SCX3029 - 10 2026-07-14
SCX3038 - 9 2026-06-30
SCX3081 - 8 2026-07-07
SCX3017 - 8 2026-07-13
SCX3098 - 7 2026-06-30
SCX3084 - 7 2026-07-13
SCX3053 - 7 2026-07-11
SCX3047 Sun Country Airlines 7 2026-06-13
SCX3011 - 7 2026-06-29
SCX3080 - 6 2026-07-13
SCX3079 - 6 2026-07-13
SCX3048 - 6 2026-07-12
SCX3034 - 6 2026-07-01
SCX3024 - 6 2026-07-06
SCX3013 - 6 2026-07-12
SCX3090 Sun Country Airlines 5 2026-06-14
SCX3085 Sun Country Airlines 5 2026-06-19
SCX3077 - 5 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SCX3055 - Jul 14, 13:25 UTCJul 14, 16:45 UTC3h 20m
2026-07-14 SCX3029 - Jul 14, 04:50 UTCJul 14, 08:10 UTC3h 20m
2026-07-13 SCX3017 - Jul 13, 21:55 UTCJul 13, 23:45 UTC1h 50m
2026-07-13 SCX3079 - Jul 13, 18:50 UTCJul 13, 20:30 UTC1h 40m
2026-07-13 SCX3080 MSP → CVG Jul 13, 11:05 UTCJul 13, 12:25 UTC1h 20m
2026-07-13 SCX3084 - Jul 13, 02:10 UTCJul 13, 03:40 UTC1h 30m
2026-07-12 SCX3013 - Jul 12, 10:15 UTCJul 12, 11:30 UTC1h 15m
2026-07-12 SCX3048 - Jul 12, 04:05 UTCJul 12, 06:15 UTC2h 10m
2026-07-11 SCX3053 - Jul 11, 23:50 UTCJul 12, 01:15 UTC1h 25m
2026-07-11 SCX3003 - Jul 11, 19:15 UTCJul 11, 21:00 UTC1h 45m
2026-07-11 SCX3022 - Jul 11, 08:40 UTCJul 11, 10:05 UTC1h 25m
2026-07-11 SCX3057 - Jul 11, 04:40 UTCJul 11, 06:05 UTC1h 25m
2026-07-10 SCX3092 PDX → AFW Jul 10, 23:05 UTCJul 11, 02:15 UTC3h 10m
2026-07-10 SCX3009 - Jul 10, 17:10 UTCJul 10, 20:40 UTC3h 30m
2026-07-10 SCX3037 PDX → FAI Jul 10, 12:00 UTCJul 10, 15:20 UTC3h 20m
2026-07-10 SCX3032 - Jul 10, 04:50 UTCJul 10, 08:15 UTC3h 25m
2026-07-09 SCX3092 PDX → AFW Jul 9, 23:00 UTCJul 10, 02:05 UTC3h 5m
2026-07-09 SCX3009 FAI → PDX Jul 9, 17:05 UTCJul 9, 20:30 UTC3h 25m
2026-07-09 SCX3037 PDX → FAI Jul 9, 12:05 UTCJul 9, 15:30 UTC3h 25m
2026-07-09 SCX3032 - Jul 9, 05:05 UTCJul 9, 08:30 UTC3h 25m
2026-07-09 SCX3006 - Jul 9, 00:45 UTCJul 9, 02:00 UTC1h 15m
2026-07-08 SCX3041 - Jul 8, 21:10 UTCJul 8, 22:35 UTC1h 25m
2026-07-08 SCX3056 AUS → SBD Jul 8, 13:25 UTCJul 8, 15:55 UTC2h 30m
2026-07-08 SCX3077 SBD → AUS Jul 8, 04:10 UTCJul 8, 06:35 UTC2h 25m
2026-07-07 SCX3081 MSP → SBD Jul 7, 22:55 UTCJul 8, 02:10 UTC3h 15m
2026-07-07 SCX3084 - Jul 7, 02:10 UTCJul 7, 03:35 UTC1h 25m
2026-07-06 SCX3017 FAI → PDX Jul 6, 22:00 UTCJul 6, 23:35 UTC1h 35m
2026-07-06 SCX3079 - Jul 6, 18:40 UTCJul 6, 20:20 UTC1h 40m
2026-07-06 SCX3013 - Jul 6, 10:15 UTCJul 6, 11:30 UTC1h 15m
2026-07-06 SCX3024 - Jul 6, 06:50 UTCJul 6, 07:50 UTC1h 0m
2026-07-04 SCX3003 - Jul 4, 19:00 UTCJul 4, 20:30 UTC1h 30m
2026-07-04 SCX3022 STL → AFW Jul 4, 07:25 UTCJul 4, 08:40 UTC1h 15m
2026-07-04 SCX3057 - Jul 4, 04:25 UTCJul 4, 05:35 UTC1h 10m
2026-07-04 SCX3006 - Jul 4, 00:25 UTCJul 4, 01:40 UTC1h 15m
2026-07-03 SCX3041 - Jul 3, 21:20 UTCJul 3, 22:40 UTC1h 20m
2026-07-03 SCX3056 AUS → SBD Jul 3, 13:25 UTCJul 3, 16:05 UTC2h 40m
2026-07-03 SCX3077 SBD → AUS Jul 3, 04:40 UTCJul 3, 07:00 UTC2h 20m
2026-07-02 SCX3081 MSP → SBD Jul 2, 23:00 UTCJul 3, 02:25 UTC3h 25m
2026-07-02 SCX3043 - Jul 2, 19:45 UTCJul 2, 21:20 UTC1h 35m
2026-07-02 SCX3080 MSP → CVG Jul 2, 12:25 UTCJul 2, 13:55 UTC1h 30m
2026-07-02 SCX3084 SFO → LAL Jul 2, 02:20 UTCJul 2, 03:45 UTC1h 25m
2026-07-01 SCX3034 - Jul 1, 22:15 UTCJul 1, 23:30 UTC1h 15m
2026-07-01 SCX3091 - Jul 1, 19:15 UTCJul 1, 20:25 UTC1h 10m
2026-07-01 SCX3061 - Jul 1, 09:10 UTCJul 1, 10:55 UTC1h 45m
2026-07-01 SCX3082 - Jul 1, 05:40 UTCJul 1, 07:15 UTC1h 35m
2026-06-30 SCX3033 MSP → SBD Jun 30, 22:15 UTCJun 30, 23:40 UTC1h 25m
2026-06-30 SCX3043 - Jun 30, 18:40 UTCJun 30, 20:00 UTC1h 20m
2026-06-30 SCX3055 - Jun 30, 13:20 UTCJun 30, 16:30 UTC3h 10m
2026-06-30 SCX3098 SBD → BOI Jun 30, 06:15 UTCJun 30, 07:50 UTC1h 35m
2026-06-30 SCX3038 - Jun 30, 00:45 UTCJun 30, 02:45 UTC2h 1m

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 N5693A page for operator, model, and routing details .

Mode-S A74B1B frequently asked

What is Mode-S code A74B1B?
A74B1B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N5693A.
Where is Mode-S A74B1B registered?
Mode-S code A74B1B 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 A74B1B 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 A74B1B, octal 51645433, decimal 10,963,739.
What flights does A74B1B operate?
Mode-S A74B1B has broadcast 20 distinct callsigns, including SCX3055, SCX3043, SCX3029, SCX3038, SCX3081.