Apparatus

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sensors Mode-S transponder

A3FBFC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N356KD · BOEING 747-400 · operated by B26356 LLC

Hex
A3FBFC
Octal
50775774
Decimal
10,746,876
Country
US
Tail
N356KD
Type
B744
No current signal · last broadcast 1d ago
Flights observed
70
Distinct callsigns
12
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A3FBFC.

Country allocation

The ICAO 24-bit address A3FBFC 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 12 distinct

Callsign Airline Flights Last seen
WGN212 - 15 2026-07-03
WGN317 - 11 2026-07-12
WGN315 - 10 2026-07-10
WGN211 - 8 2026-07-02
WGN318 - 6 2026-07-12
WGN316 - 6 2026-07-10
WGN311 - 4 2026-06-23
WGN9356 - 2 2026-06-28
WGN356 - 2 2026-05-10
WGN314 - 2 2026-07-08
WGN313 - 2 2026-07-07
WGN312 - 2 2026-06-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 WGN318 - Jul 12, 10:35 UTCJul 12, 22:35 UTC12h 0m
2026-07-12 WGN317 - Jul 12, 03:25 UTCJul 12, 08:05 UTC4h 40m
2026-07-11 WGN317 - Jul 11, 18:10 UTCJul 12, 01:35 UTC7h 25m
2026-07-10 WGN316 - Jul 10, 11:45 UTCJul 10, 23:30 UTC11h 46m
2026-07-10 WGN315 - Jul 10, 03:25 UTCJul 10, 07:55 UTC4h 30m
2026-07-09 WGN315 ICN → ANC Jul 9, 18:00 UTCJul 10, 01:25 UTC7h 25m
2026-07-08 WGN314 - Jul 8, 04:15 UTCJul 8, 17:15 UTC13h 0m
2026-07-07 WGN313 ANC → ORD Jul 7, 19:50 UTCJul 8, 01:15 UTC5h 25m
2026-07-07 WGN313 - Jul 7, 10:45 UTCJul 7, 18:10 UTC7h 25m
2026-07-06 WGN318 - Jul 6, 03:15 UTCJul 6, 15:35 UTC12h 20m
2026-07-05 WGN317 - Jul 5, 19:20 UTCJul 5, 23:55 UTC4h 35m
2026-07-04 WGN317 - Jul 4, 23:50 UTCJul 5, 07:10 UTC7h 20m
2026-07-03 WGN316 - Jul 3, 23:30 UTCJul 4, 11:15 UTC11h 45m
2026-07-03 WGN212 - Jul 3, 10:35 UTCJul 3, 19:50 UTC9h 15m
2026-07-03 WGN212 - Jul 3, 06:45 UTCJul 3, 08:15 UTC1h 30m
2026-07-03 WGN212 - Jul 3, 04:40 UTCJul 3, 04:50 UTC10m
2026-07-02 WGN211 - Jul 2, 09:20 UTCJul 2, 21:40 UTC12h 20m
2026-07-01 WGN212 - Jul 1, 11:55 UTCJul 1, 21:00 UTC9h 5m
2026-07-01 WGN212 - Jul 1, 07:50 UTCJul 1, 09:10 UTC1h 20m
2026-06-30 WGN211 - Jun 30, 11:10 UTCJun 30, 23:35 UTC12h 25m
2026-06-29 WGN212 - Jun 29, 12:39 UTCJun 29, 21:54 UTC9h 15m
2026-06-29 WGN212 - Jun 29, 08:54 UTCJun 29, 10:29 UTC1h 35m
2026-06-28 WGN211 - Jun 28, 21:14 UTCJun 28, 21:24 UTC10m
2026-06-28 WGN211 - Jun 28, 06:10 UTCJun 28, 18:55 UTC12h 45m
2026-06-28 WGN9356 - Jun 28, 00:39 UTCJun 28, 01:34 UTC55m
2026-06-24 WGN312 - Jun 24, 05:44 UTCJun 24, 07:44 UTC2h 0m
2026-06-23 WGN311 - Jun 23, 06:29 UTCJun 23, 11:14 UTC4h 45m
2026-06-22 WGN311 - Jun 22, 17:44 UTCJun 23, 01:20 UTC7h 35m
2026-06-21 WGN318 ICN → LAX Jun 21, 10:54 UTCJun 21, 23:00 UTC12h 5m
2026-06-21 WGN317 ORD → ICN Jun 21, 02:40 UTCJun 21, 07:14 UTC4h 35m
2026-06-20 WGN317 ORD → ICN Jun 20, 17:49 UTCJun 21, 01:25 UTC7h 35m
2026-06-19 WGN316 ANC → ORD Jun 19, 09:59 UTCJun 19, 22:09 UTC12h 10m
2026-06-19 WGN315 LAX → ICN Jun 19, 03:05 UTCJun 19, 07:39 UTC4h 35m
2026-06-18 WGN315 LAX → ICN Jun 18, 17:40 UTCJun 19, 01:10 UTC7h 29m
2026-06-16 WGN312 - Jun 16, 11:25 UTCJun 16, 23:55 UTC12h 31m
2026-06-16 WGN311 - Jun 16, 04:10 UTCJun 16, 08:35 UTC4h 25m
2026-06-15 WGN311 ICN → ANC Jun 15, 19:39 UTCJun 16, 02:54 UTC7h 15m
2026-06-14 WGN318 ICN → LAX Jun 14, 10:35 UTCJun 14, 22:30 UTC11h 55m
2026-06-14 WGN317 ORD → ICN Jun 14, 03:30 UTCJun 14, 08:15 UTC4h 45m
2026-06-13 WGN317 ORD → ICN Jun 13, 18:00 UTCJun 14, 01:50 UTC7h 50m
2026-06-12 WGN316 ANC → ORD Jun 12, 14:30 UTCJun 13, 02:45 UTC12h 15m
2026-06-12 WGN315 LAX → ICN Jun 12, 03:50 UTCJun 12, 08:05 UTC4h 15m
2026-06-11 WGN315 LAX → ICN Jun 11, 18:30 UTCJun 12, 01:40 UTC7h 11m
2026-06-08 WGN318 ICN → LAX Jun 8, 00:25 UTCJun 8, 13:15 UTC12h 50m
2026-06-07 WGN317 ORD → ICN Jun 7, 17:15 UTCJun 7, 21:45 UTC4h 30m
2026-06-07 WGN317 ORD → ICN Jun 7, 08:00 UTCJun 7, 15:25 UTC7h 25m
2026-06-05 WGN316 ANC → ORD Jun 5, 12:20 UTCJun 6, 00:45 UTC12h 25m
2026-06-05 WGN315 LAX → ICN Jun 5, 04:55 UTCJun 5, 09:20 UTC4h 25m
2026-06-04 WGN315 LAX → ICN Jun 4, 19:30 UTCJun 5, 03:10 UTC7h 40m
2026-05-31 WGN318 ICN → LAX May 31, 17:00 UTCJun 1, 05:15 UTC12h 15m

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 N356KD page for operator, model, and routing details .

Mode-S A3FBFC frequently asked

What is Mode-S code A3FBFC?
A3FBFC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N356KD.
Where is Mode-S A3FBFC registered?
Mode-S code A3FBFC 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 A3FBFC 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 A3FBFC, octal 50775774, decimal 10,746,876.
What flights does A3FBFC operate?
Mode-S A3FBFC has broadcast 12 distinct callsigns, including WGN212, WGN317, WGN315, WGN211, WGN318.