Apparatus

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sensors Mode-S transponder

AAA39A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N785FD · BOEING 757-200 · operated by FEDERAL EXPRESS CORP

Hex
AAA39A
Octal
52521632
Decimal
11,183,002
Country
US
Tail
N785FD
Type
B752
No current signal · last broadcast 2h ago
Flights observed
140
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S AAA39A.

Country allocation

The ICAO 24-bit address AAA39A 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
FDX1559 - 7 2026-06-24
FDX1502 - 6 2026-07-07
FDX1362 - 5 2026-06-18
FDX1582 - 4 2026-06-30
FDX155 - 4 2026-07-10
FDX1451 - 4 2026-06-17
FDX1428 - 4 2026-06-16
FDX1320 - 4 2026-06-20
FDX1211 - 4 2026-07-14
FDX1714 FedEx Express 3 2026-05-06
FDX156 - 3 2026-07-09
FDX1498 FedEx Express 3 2026-04-22
FDX1472 - 3 2026-07-03
FDX1457 - 3 2026-06-19
FDX1324 FedEx Express 3 2026-04-18
FDX1294 - 3 2026-06-17
FDX1278 FedEx Express 3 2026-05-21
FDX1272 - 3 2026-07-07
FDX1269 FedEx Express 3 2026-05-20
FDX839 FedEx Express 2 2026-06-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 FDX1211 - Jul 14, 03:10 UTCJul 14, 04:15 UTC1h 5m
2026-07-14 FDX1211 - Jul 14, 01:55 UTCJul 14, 02:10 UTC15m
2026-07-10 FDX1500 - Jul 10, 09:55 UTCJul 10, 11:00 UTC1h 5m
2026-07-10 FDX155 - Jul 10, 01:05 UTCJul 10, 03:30 UTC2h 25m
2026-07-10 FDX155 YOW → MEM Jul 10, 01:00 UTCJul 10, 03:30 UTC2h 30m
2026-07-09 FDX156 - Jul 9, 09:35 UTCJul 9, 11:45 UTC2h 10m
2026-07-09 FDX155 - Jul 9, 01:10 UTCJul 9, 03:30 UTC2h 20m
2026-07-08 FDX156 - Jul 8, 09:35 UTCJul 8, 11:40 UTC2h 5m
2026-07-08 FDX1302 - Jul 8, 03:05 UTCJul 8, 04:20 UTC1h 15m
2026-07-07 FDX1502 - Jul 7, 11:00 UTCJul 7, 11:15 UTC15m
2026-07-07 FDX1502 - Jul 7, 09:15 UTCJul 7, 10:10 UTC55m
2026-07-07 FDX1272 - Jul 7, 03:00 UTCJul 7, 04:00 UTC1h 0m
2026-07-03 FDX1472 - Jul 3, 09:25 UTCJul 3, 10:25 UTC1h 0m
2026-07-03 FDX1376 - Jul 3, 02:30 UTCJul 3, 03:20 UTC50m
2026-07-02 FDX1576 OLV → CHA Jul 2, 09:50 UTCJul 2, 10:30 UTC40m
2026-07-02 FDX1333 - Jul 2, 03:00 UTCJul 2, 04:00 UTC1h 0m
2026-07-01 FDX1512 - Jul 1, 09:40 UTCJul 1, 10:35 UTC55m
2026-06-30 FDX1267 - Jun 30, 21:25 UTCJul 1, 05:10 UTC7h 45m
2026-06-30 FDX1582 - Jun 30, 12:10 UTCJun 30, 13:05 UTC55m
2026-06-30 FDX1582 ICT → MEM Jun 30, 12:07 UTCJun 30, 13:06 UTC59m
2026-06-30 FDX1582 - Jun 30, 10:00 UTCJun 30, 11:05 UTC1h 5m
2026-06-30 FDX1302 - Jun 30, 03:15 UTCJun 30, 04:25 UTC1h 10m
2026-06-27 FDX1502 - Jun 27, 10:50 UTCJun 27, 11:04 UTC15m
2026-06-27 FDX1502 - Jun 27, 09:00 UTCJun 27, 09:55 UTC55m
2026-06-27 FDX1310 - Jun 27, 01:35 UTCJun 27, 03:49 UTC2h 15m
2026-06-26 FDX1780 - Jun 26, 09:10 UTCJun 26, 10:35 UTC1h 25m
2026-06-26 FDX2619 TYS → SDF Jun 26, 04:39 UTCJun 26, 05:19 UTC40m
2026-06-26 FDX2619 TYS → SDF Jun 26, 03:05 UTCJun 26, 03:54 UTC50m
2026-06-25 FDX1485 - Jun 25, 09:25 UTCJun 25, 10:04 UTC40m
2026-06-25 FDX1305 - Jun 25, 03:34 UTCJun 25, 04:35 UTC1h 0m
2026-06-24 FDX1559 TUL → ICT Jun 24, 11:35 UTCJun 24, 12:20 UTC45m
2026-06-24 FDX1559 - Jun 24, 09:59 UTCJun 24, 10:55 UTC55m
2026-06-24 FDX1357 - Jun 24, 03:35 UTCJun 24, 04:59 UTC1h 25m
2026-06-24 FDX1357 - Jun 24, 01:30 UTCJun 24, 02:40 UTC1h 10m
2026-06-23 FDX1500 - Jun 23, 09:45 UTCJun 23, 10:59 UTC1h 15m
2026-06-23 FDX1347 - Jun 23, 02:09 UTCJun 23, 04:25 UTC2h 15m
2026-06-20 FDX1570 - Jun 20, 08:44 UTCJun 20, 10:34 UTC1h 50m
2026-06-20 FDX1320 - Jun 20, 03:04 UTCJun 20, 03:39 UTC35m
2026-06-20 FDX1320 SGF → MEM Jun 20, 03:04 UTCJun 20, 03:39 UTC35m
2026-06-19 FDX1457 - Jun 19, 09:34 UTCJun 19, 10:14 UTC40m
2026-06-19 FDX1457 MEM → SGF Jun 19, 09:34 UTCJun 19, 10:15 UTC41m
2026-06-19 FDX1270 - Jun 19, 03:39 UTCJun 19, 04:29 UTC50m
2026-06-18 FDX1441 - Jun 18, 09:20 UTCJun 18, 10:05 UTC45m
2026-06-18 FDX1362 - Jun 18, 02:00 UTCJun 18, 03:25 UTC1h 25m
2026-06-18 FDX1362 ROA → MEM Jun 18, 02:00 UTCJun 18, 03:25 UTC1h 25m
2026-06-17 FDX1451 - Jun 17, 09:30 UTCJun 17, 10:45 UTC1h 15m
2026-06-17 FDX1294 - Jun 17, 01:10 UTCJun 17, 03:20 UTC2h 10m
2026-06-16 FDX1428 - Jun 16, 08:20 UTCJun 16, 09:55 UTC1h 35m
2026-06-16 FDX1428 MEM → PHL Jun 16, 08:14 UTCJun 16, 10:08 UTC1h 54m
2026-06-16 FDX2356 MCI → MEM Jun 16, 02:24 UTCJun 16, 03:15 UTC50m

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 N785FD page for operator, model, and routing details .

Mode-S AAA39A frequently asked

What is Mode-S code AAA39A?
AAA39A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N785FD.
Where is Mode-S AAA39A registered?
Mode-S code AAA39A 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 AAA39A broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAA39A, octal 52521632, decimal 11,183,002.
What flights does AAA39A operate?
Mode-S AAA39A has broadcast 20 distinct callsigns, including FDX1559, FDX1502, FDX1362, FDX1582, FDX155.