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sensors Mode-S transponder

A1139F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N169FE · BOEING 767-300 · operated by FEDERAL EXPRESS CORP

Hex
A1139F
Octal
50211637
Decimal
10,556,319
Country
US
Tail
N169FE
Type
B763
No current signal · last broadcast 11h ago
Flights observed
178
Distinct callsigns
20
Country
US
Last broadcast
11h ago

Last known position

Most recent position reported by Mode-S A1139F.

Country allocation

The ICAO 24-bit address A1139F 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
FDX51 - 5 2026-06-13
FDX1466 - 5 2026-07-16
FDX379 FedEx Express 4 2026-05-29
FDX252 - 4 2026-06-11
FDX1545 - 4 2026-07-08
FDX1301 - 4 2026-07-09
FDX400 FedEx Express 3 2026-04-16
FDX1748 - 3 2026-07-01
FDX1705 FedEx Express 3 2026-04-16
FDX1438 FedEx Express 3 2026-04-17
FDX1375 - 3 2026-07-17
FDX1262 - 3 2026-07-02
FDX1248 - 3 2026-07-15
FDX855 FedEx Express 2 2026-05-08
FDX764 FedEx Express 2 2026-05-19
FDX762 FedEx Express 2 2026-04-16
FDX62 FedEx Express 2 2026-06-13
FDX505 FedEx Express 2 2026-05-30
FDX403 FedEx Express 2 2026-04-14
FDX2684 - 2 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 FDX1508 - Jul 17, 09:15 UTCJul 17, 12:19 UTC3h 5m
2026-07-17 FDX1375 - Jul 17, 02:59 UTCJul 17, 03:55 UTC55m
2026-07-16 FDX1466 - Jul 16, 09:15 UTCJul 16, 10:00 UTC45m
2026-07-16 FDX1466 MEM → TUL Jul 16, 09:12 UTCJul 16, 10:00 UTC48m
2026-07-16 FDX1229 - Jul 16, 01:55 UTCJul 16, 05:15 UTC3h 20m
2026-07-15 FDX1429 - Jul 15, 08:25 UTCJul 15, 11:50 UTC3h 25m
2026-07-15 FDX1248 - Jul 15, 02:15 UTCJul 15, 03:30 UTC1h 15m
2026-07-14 FDX1580 - Jul 14, 09:30 UTCJul 14, 10:40 UTC1h 10m
2026-07-14 FDX1248 - Jul 14, 02:05 UTCJul 14, 03:20 UTC1h 15m
2026-07-12 FDX734 - Jul 12, 22:35 UTCJul 12, 23:45 UTC1h 10m
2026-07-12 FDX241 - Jul 12, 12:50 UTCJul 12, 15:55 UTC3h 5m
2026-07-11 FDX140 - Jul 11, 09:45 UTCJul 11, 13:10 UTC3h 25m
2026-07-11 FDX1309 STL → MEM Jul 11, 04:02 UTCJul 11, 04:49 UTC47m
2026-07-10 FDX1708 - Jul 10, 09:05 UTCJul 10, 09:40 UTC35m
2026-07-10 FDX1654 - Jul 10, 02:35 UTCJul 10, 06:10 UTC3h 35m
2026-07-09 FDX1422 - Jul 9, 09:25 UTCJul 9, 12:25 UTC3h 0m
2026-07-09 FDX1301 - Jul 9, 01:45 UTCJul 9, 05:05 UTC3h 20m
2026-07-08 FDX1545 - Jul 8, 08:15 UTCJul 8, 11:55 UTC3h 40m
2026-07-08 FDX1222 - Jul 8, 02:35 UTCJul 8, 05:45 UTC3h 10m
2026-07-07 FDX1754 IND → SAN Jul 7, 08:45 UTCJul 7, 12:15 UTC3h 30m
2026-07-07 FDX1603 ATL → IND Jul 7, 03:45 UTCJul 7, 04:50 UTC1h 5m
2026-07-03 FDX1774 - Jul 3, 08:40 UTCJul 3, 09:40 UTC1h 0m
2026-07-03 FDX2684 - Jul 3, 02:15 UTCJul 3, 04:20 UTC2h 5m
2026-07-02 FDX701 - Jul 2, 20:30 UTCJul 2, 22:20 UTC1h 50m
2026-07-02 FDX830 - Jul 2, 11:55 UTCJul 2, 13:25 UTC1h 30m
2026-07-02 FDX1458 - Jul 2, 08:50 UTCJul 2, 10:15 UTC1h 25m
2026-07-02 FDX1262 PHX → MEM Jul 2, 03:00 UTCJul 2, 05:45 UTC2h 45m
2026-07-01 FDX1748 - Jul 1, 08:10 UTCJul 1, 11:25 UTC3h 15m
2026-07-01 FDX151 YYZ → IND Jul 1, 02:20 UTCJul 1, 03:25 UTC1h 5m
2026-06-30 FDX150 - Jun 30, 09:00 UTCJun 30, 10:05 UTC1h 5m
2026-06-30 FDX1645 OAK → IND Jun 30, 02:15 UTCJun 30, 05:50 UTC3h 35m
2026-06-27 FDX3707 - Jun 27, 21:10 UTCJun 28, 01:25 UTC4h 15m
2026-06-26 FDX1444 - Jun 26, 08:20 UTCJun 26, 10:05 UTC1h 45m
2026-06-26 FDX1334 - Jun 26, 02:00 UTCJun 26, 04:14 UTC2h 15m
2026-06-26 FDX1334 ABQ → MEM Jun 26, 02:00 UTCJun 26, 04:17 UTC2h 17m
2026-06-25 FDX1583 - Jun 25, 09:40 UTCJun 25, 11:44 UTC2h 5m
2026-06-25 FDX2361 SDF → MEM Jun 25, 03:50 UTCJun 25, 04:40 UTC50m
2026-06-25 FDX2361 SDF → MEM Jun 25, 03:49 UTCJun 25, 04:45 UTC56m
2026-06-24 FDX1467 - Jun 24, 09:29 UTCJun 24, 10:14 UTC45m
2026-06-24 FDX1262 - Jun 24, 03:00 UTCJun 24, 05:24 UTC2h 25m
2026-06-23 FDX1748 - Jun 23, 08:09 UTCJun 23, 11:24 UTC3h 15m
2026-06-23 FDX2684 MEM → IND Jun 23, 02:20 UTCJun 23, 04:25 UTC2h 5m
2026-06-21 FDX789 MEM → FLL Jun 21, 20:54 UTCJun 21, 22:40 UTC1h 45m
2026-06-20 FDX1301 - Jun 20, 01:39 UTCJun 20, 04:54 UTC3h 15m
2026-06-19 FDX1545 - Jun 19, 08:29 UTCJun 19, 12:09 UTC3h 40m
2026-06-19 FDX1238 - Jun 19, 02:39 UTCJun 19, 04:00 UTC1h 20m
2026-06-18 FDX1437 - Jun 18, 09:30 UTCJun 18, 10:50 UTC1h 20m
2026-06-18 FDX1216 - Jun 18, 01:45 UTCJun 18, 05:15 UTC3h 30m
2026-06-17 FDX1415 - Jun 17, 08:35 UTCJun 17, 12:35 UTC4h 0m
2026-06-17 FDX1222 - Jun 17, 02:25 UTCJun 17, 05:35 UTC3h 10m

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 N169FE page for operator, model, and routing details .

Mode-S A1139F frequently asked

What is Mode-S code A1139F?
A1139F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N169FE.
Where is Mode-S A1139F registered?
Mode-S code A1139F 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 A1139F broadcasting right now?
No active broadcast right now. Last signal was 11h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1139F, octal 50211637, decimal 10,556,319.
What flights does A1139F operate?
Mode-S A1139F has broadcast 20 distinct callsigns, including FDX51, FDX1466, FDX379, FDX252, FDX1545.