Apparatus

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sensors Mode-S transponder

A12FF9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N176FE · BOEING 767-300 · operated by FEDERAL EXPRESS CORP

Hex
A12FF9
Octal
50227771
Decimal
10,563,577
Country
US
Tail
N176FE
Type
B763
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
223
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S A12FF9.

Country allocation

The ICAO 24-bit address A12FF9 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
FDX644 - 5 2026-07-12
FDX1506 - 5 2026-06-26
FDX1483 - 5 2026-07-10
FDX1415 - 5 2026-07-18
FDX1281 - 5 2026-06-27
FDX1155 - 5 2026-07-16
FDX568 FedEx Express 4 2026-07-23
FDX1803 - 4 2026-07-01
FDX1136 - 4 2026-07-16
FDX716 - 3 2026-06-28
FDX367 - 3 2026-07-14
FDX251 - 3 2026-06-13
FDX2283 FedEx Express 3 2026-06-24
FDX1889 FedEx Express 3 2026-04-18
FDX1885 - 3 2026-07-01
FDX1874 - 3 2026-07-03
FDX1853 - 3 2026-07-17
FDX1839 FedEx Express 3 2026-04-18
FDX1508 - 3 2026-07-15
FDX1460 FedEx Express 3 2026-05-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 FDX558 MEM → JFK Jul 26, 20:05 UTCJul 26, 22:15 UTC2h 10m
2026-07-25 FDX1216 PDX → MEM Jul 25, 01:40 UTCJul 25, 05:15 UTC3h 35m
2026-07-24 FDX1857 OAK → PDX Jul 24, 09:50 UTCJul 24, 11:00 UTC1h 10m
2026-07-23 FDX568 MEM → SEA Jul 23, 20:50 UTCJul 24, 00:25 UTC3h 35m
2026-07-23 FDX568 MEM → SEA Jul 23, 20:45 UTCJul 24, 00:23 UTC3h 38m
2026-07-23 FDX612 - Jul 23, 12:10 UTCJul 23, 13:35 UTC1h 25m
2026-07-23 FDX1410 MEM → TPA Jul 23, 08:20 UTCJul 23, 09:45 UTC1h 25m
2026-07-23 FDX1344 TUS → MEM Jul 23, 02:05 UTCJul 23, 04:30 UTC2h 25m
2026-07-23 FDX1344 TUS → MEM Jul 23, 02:00 UTCJul 23, 04:35 UTC2h 35m
2026-07-22 FDX1414 - Jul 22, 11:10 UTCJul 22, 12:50 UTC1h 40m
2026-07-22 FDX1414 MEM → TUS Jul 22, 10:18 UTCJul 22, 12:49 UTC2h 31m
2026-07-22 FDX141 YYC → MEM Jul 22, 01:55 UTCJul 22, 05:00 UTC3h 5m
2026-07-21 FDX140 MEM → YYC Jul 21, 09:10 UTCJul 21, 12:35 UTC3h 25m
2026-07-21 FDX1213 BUR → MEM Jul 21, 02:00 UTCJul 21, 05:30 UTC3h 30m
2026-07-20 FDX1805 PDX → BUR Jul 20, 21:35 UTCJul 20, 23:35 UTC2h 0m
2026-07-18 FDX1415 - Jul 18, 08:40 UTCJul 18, 12:15 UTC3h 35m
2026-07-18 FDX1355 - Jul 18, 02:35 UTCJul 18, 05:40 UTC3h 6m
2026-07-17 FDX1853 OAK → ONT Jul 17, 09:19 UTCJul 17, 10:19 UTC1h 0m
2026-07-17 FDX1853 OAK → ONT Jul 17, 09:20 UTCJul 17, 10:15 UTC55m
2026-07-17 FDX1806 DFW → OAK Jul 17, 03:50 UTCJul 17, 06:50 UTC3h 0m
2026-07-16 FDX1136 LRD → DFW Jul 16, 21:58 UTCJul 16, 22:57 UTC59m
2026-07-16 FDX1136 LRD → DFW Jul 16, 22:00 UTCJul 16, 22:59 UTC1h 0m
2026-07-16 FDX1155 - Jul 16, 10:15 UTCJul 16, 11:05 UTC50m
2026-07-16 FDX1155 IAH → LRD Jul 16, 10:14 UTCJul 16, 11:04 UTC50m
2026-07-16 FDX1155 - Jul 16, 08:30 UTCJul 16, 09:10 UTC40m
2026-07-16 FDX1100 - Jul 16, 03:25 UTCJul 16, 06:00 UTC2h 35m
2026-07-15 FDX1508 - Jul 15, 09:00 UTCJul 15, 12:05 UTC3h 5m
2026-07-15 FDX1273 - Jul 15, 02:15 UTCJul 15, 04:40 UTC2h 25m
2026-07-14 FDX367 - Jul 14, 20:55 UTCJul 14, 23:25 UTC2h 29m
2026-07-14 FDX601 - Jul 14, 12:25 UTCJul 14, 14:10 UTC1h 45m
2026-07-14 FDX1400 - Jul 14, 09:00 UTCJul 14, 10:50 UTC1h 50m
2026-07-14 FDX1247 ORD → MEM Jul 14, 04:05 UTCJul 14, 05:10 UTC1h 5m
2026-07-13 FDX795 - Jul 13, 01:05 UTCJul 13, 02:15 UTC1h 10m
2026-07-12 FDX795 - Jul 12, 22:05 UTCJul 12, 23:20 UTC1h 15m
2026-07-12 FDX644 JFK → MEM Jul 12, 11:16 UTCJul 12, 13:26 UTC2h 10m
2026-07-12 FDX644 - Jul 12, 11:20 UTCJul 12, 13:25 UTC2h 5m
2026-07-10 FDX1483 - Jul 10, 08:30 UTCJul 10, 10:30 UTC2h 0m
2026-07-10 FDX1375 - Jul 10, 03:05 UTCJul 10, 04:00 UTC55m
2026-07-09 FDX1466 - Jul 9, 09:10 UTCJul 9, 10:00 UTC50m
2026-07-09 FDX1216 - Jul 9, 01:45 UTCJul 9, 05:15 UTC3h 30m
2026-07-08 FDX1415 - Jul 8, 08:10 UTCJul 8, 12:00 UTC3h 50m
2026-07-08 FDX1240 - Jul 8, 02:15 UTCJul 8, 05:10 UTC2h 55m
2026-07-07 FDX1440 - Jul 7, 09:35 UTCJul 7, 12:25 UTC2h 50m
2026-07-07 FDX1290 - Jul 7, 02:10 UTCJul 7, 05:20 UTC3h 10m
2026-07-03 FDX1874 - Jul 3, 11:30 UTCJul 3, 12:20 UTC50m
2026-07-03 FDX1874 LAS → RNO Jul 3, 11:30 UTCJul 3, 12:21 UTC51m
2026-07-03 FDX1874 OAK → LAS Jul 3, 09:30 UTCJul 3, 10:30 UTC1h 0m
2026-07-03 FDX1837 PHX → OAK Jul 3, 03:30 UTCJul 3, 05:00 UTC1h 30m
2026-07-02 FDX979 DEN → PHX Jul 2, 23:35 UTCJul 3, 01:00 UTC1h 25m
2026-07-02 FDX979 - Jul 2, 20:10 UTCJul 2, 22:15 UTC2h 5m

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 N176FE page for operator, model, and routing details .

Mode-S A12FF9 frequently asked

What is Mode-S code A12FF9?
A12FF9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N176FE.
Where is Mode-S A12FF9 registered?
Mode-S code A12FF9 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 A12FF9 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A12FF9, octal 50227771, decimal 10,563,577.
What flights does A12FF9 operate?
Mode-S A12FF9 has broadcast 20 distinct callsigns, including FDX644, FDX1506, FDX1483, FDX1415, FDX1281.