Apparatus

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sensors Mode-S transponder

AABC3D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N791FD · BOEING 757-200 · operated by FEDERAL EXPRESS CORP

Hex
AABC3D
Octal
52536075
Decimal
11,189,309
Country
US
Tail
N791FD
Type
B752
No current signal · last broadcast 10h ago
Flights observed
127
Distinct callsigns
20
Country
US
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S AABC3D.

Country allocation

The ICAO 24-bit address AABC3D 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
FDX1727 FedEx Express 6 2026-06-02
FDX1891 - 5 2026-06-25
FDX1841 - 5 2026-06-26
FDX1662 FedEx Express 5 2026-06-03
FDX1409 - 5 2026-07-09
FDX1058 FedEx Express 5 2026-05-19
FDX1559 - 4 2026-07-10
FDX1500 - 4 2026-07-08
FDX1487 FedEx Express 4 2026-04-17
FDX1211 - 4 2026-07-09
FDX1123 FedEx Express 4 2026-05-22
FDX2278 - 3 2026-07-10
FDX1767 FedEx Express 3 2026-06-03
FDX1667 FedEx Express 3 2026-06-04
FDX1558 - 3 2026-04-14
FDX1362 - 3 2026-07-03
FDX1305 - 3 2026-07-14
FDX1777 FedEx Express 2 2026-06-04
FDX1685 FedEx Express 2 2026-04-29
FDX1619 FedEx Express 2 2026-04-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 FDX1498 - Jul 14, 09:55 UTCJul 14, 10:30 UTC35m
2026-07-14 FDX1305 - Jul 14, 03:40 UTCJul 14, 04:45 UTC1h 5m
2026-07-10 FDX1559 - Jul 10, 08:25 UTCJul 10, 08:50 UTC25m
2026-07-10 FDX1559 - Jul 10, 07:00 UTCJul 10, 07:50 UTC50m
2026-07-10 FDX2278 - Jul 10, 00:55 UTCJul 10, 02:25 UTC1h 30m
2026-07-09 FDX1409 - Jul 9, 07:50 UTCJul 9, 09:20 UTC1h 30m
2026-07-09 FDX1409 MEM → MCO Jul 9, 07:47 UTCJul 9, 09:15 UTC1h 28m
2026-07-09 FDX1211 - Jul 9, 03:00 UTCJul 9, 04:10 UTC1h 10m
2026-07-09 FDX1211 - Jul 9, 01:40 UTCJul 9, 02:10 UTC30m
2026-07-08 FDX1500 AWM → DSM Jul 8, 10:05 UTCJul 8, 11:15 UTC1h 10m
2026-07-08 FDX1500 MEM → DSM Jul 8, 10:00 UTCJul 8, 11:11 UTC1h 11m
2026-07-08 FDX1291 - Jul 8, 01:25 UTCJul 8, 04:00 UTC2h 35m
2026-07-07 FDX1491 - Jul 7, 08:45 UTCJul 7, 10:50 UTC2h 5m
2026-07-07 FDX1321 - Jul 7, 02:45 UTCJul 7, 04:20 UTC1h 35m
2026-07-03 FDX1521 - Jul 3, 09:10 UTCJul 3, 10:40 UTC1h 30m
2026-07-03 FDX1362 - Jul 3, 03:35 UTCJul 3, 04:35 UTC1h 0m
2026-07-03 FDX1362 - Jul 3, 03:20 UTCJul 3, 03:30 UTC10m
2026-07-03 FDX1362 - Jul 3, 01:40 UTCJul 3, 02:25 UTC45m
2026-07-02 FDX1451 - Jul 2, 09:35 UTCJul 2, 10:50 UTC1h 15m
2026-07-02 FDX2278 - Jul 2, 01:05 UTCJul 2, 02:35 UTC1h 30m
2026-07-01 FDX1409 - Jul 1, 08:15 UTCJul 1, 09:45 UTC1h 30m
2026-07-01 FDX1333 - Jul 1, 03:00 UTCJul 1, 04:10 UTC1h 10m
2026-06-30 FDX1512 - Jun 30, 10:10 UTCJun 30, 11:05 UTC55m
2026-06-30 FDX2393 - Jun 30, 00:45 UTCJun 30, 04:05 UTC3h 20m
2026-06-26 FDX1841 DEN → OAK Jun 26, 08:54 UTCJun 26, 11:05 UTC2h 10m
2026-06-26 FDX1841 PHX → DEN Jun 26, 04:34 UTCJun 26, 06:00 UTC1h 25m
2026-06-25 FDX1891 - Jun 25, 07:45 UTCJun 25, 09:10 UTC1h 25m
2026-06-25 FDX1891 OAK → PHX Jun 25, 07:43 UTCJun 25, 09:08 UTC1h 25m
2026-06-25 FDX1841 PHX → OAK Jun 25, 04:49 UTCJun 25, 06:20 UTC1h 30m
2026-06-24 FDX1891 - Jun 24, 08:04 UTCJun 24, 09:29 UTC1h 25m
2026-06-24 FDX1841 PHX → OAK Jun 24, 05:20 UTCJun 24, 06:50 UTC1h 30m
2026-06-23 FDX1891 OAK → PHX Jun 23, 06:59 UTCJun 23, 08:30 UTC1h 30m
2026-06-23 FDX1891 OAK → PHX Jun 23, 06:59 UTCJun 23, 08:30 UTC1h 31m
2026-06-23 FDX1841 PHX → OAK Jun 23, 04:09 UTCJun 23, 05:39 UTC1h 30m
2026-06-21 FDX981 MEM → LAX Jun 21, 22:10 UTCJun 22, 01:05 UTC2h 55m
2026-06-20 FDX1296 - Jun 20, 01:34 UTCJun 20, 03:29 UTC1h 55m
2026-06-20 FDX1296 BUF → MEM Jun 20, 01:30 UTCJun 20, 03:34 UTC2h 4m
2026-06-19 FDX1578 - Jun 19, 08:50 UTCJun 19, 10:29 UTC1h 40m
2026-06-19 FDX1578 MEM → BUF Jun 19, 08:48 UTCJun 19, 10:25 UTC1h 37m
2026-06-19 FDX1339 - Jun 19, 02:19 UTCJun 19, 03:49 UTC1h 30m
2026-06-18 FDX1539 - Jun 18, 09:30 UTCJun 18, 10:35 UTC1h 5m
2026-06-18 FDX1374 - Jun 18, 02:05 UTCJun 18, 03:05 UTC1h 0m
2026-06-17 FDX1562 - Jun 17, 08:20 UTCJun 17, 09:10 UTC50m
2026-06-16 FDX1294 - Jun 16, 01:15 UTCJun 16, 03:25 UTC2h 10m
2026-06-12 FDX1428 MEM → PHL Jun 12, 08:40 UTCJun 12, 10:35 UTC1h 55m
2026-06-12 FDX1317 LRD → MEM Jun 12, 02:50 UTCJun 12, 04:30 UTC1h 40m
2026-06-11 FDX1500 CID → DSM Jun 11, 13:15 UTCJun 11, 14:30 UTC1h 15m
2026-06-11 FDX1500 CID → DSM Jun 11, 09:40 UTCJun 11, 10:50 UTC1h 10m
2026-06-11 FDX2324 BNA → MEM Jun 11, 04:20 UTCJun 11, 05:05 UTC45m
2026-06-10 FDX1498 MEM → BNA Jun 10, 09:45 UTCJun 10, 10:20 UTC35m

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 N791FD page for operator, model, and routing details .

Mode-S AABC3D frequently asked

What is Mode-S code AABC3D?
AABC3D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N791FD.
Where is Mode-S AABC3D registered?
Mode-S code AABC3D 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 AABC3D broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AABC3D, octal 52536075, decimal 11,189,309.
What flights does AABC3D operate?
Mode-S AABC3D has broadcast 20 distinct callsigns, including FDX1727, FDX1891, FDX1841, FDX1662, FDX1409.