Apparatus

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sensors Mode-S transponder

A2B5DA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N274FE · BOEING 767-300 · operated by FEDERAL EXPRESS CORP

Hex
A2B5DA
Octal
50532732
Decimal
10,663,386
Country
US
Tail
N274FE
Type
B763
Transponder active on ground
Flights observed
203
Distinct callsigns
20
Country
US
Last broadcast
Jul 25, 10:25 UTC

Last known position

Most recent position reported by Mode-S A2B5DA.

Country allocation

The ICAO 24-bit address A2B5DA 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
FDX1721 FedEx Express 4 2026-06-12
FDX1545 FedEx Express 4 2026-05-12
FDX1411 FedEx Express 4 2026-05-15
FDX1313 FedEx Express 4 2026-06-03
FDX1301 FedEx Express 4 2026-05-13
FDX1294 - 4 2026-07-18
FDX1155 FedEx Express 4 2026-06-09
FDX1879 - 3 2026-07-08
FDX1638 FedEx Express 3 2026-06-12
FDX1635 - 3 2026-07-10
FDX1617 FedEx Express 3 2026-05-22
FDX1453 FedEx Express 3 2026-06-02
FDX1449 - 3 2026-06-26
FDX1435 FedEx Express 3 2026-07-21
FDX1417 FedEx Express 3 2026-06-10
FDX1404 FedEx Express 3 2026-04-17
FDX1365 FedEx Express 3 2026-06-10
FDX1273 FedEx Express 3 2026-06-04
FDX1248 - 3 2026-06-19
FDX1238 FedEx Express 3 2026-05-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 FDX1410 MEM → TPA Jul 25, 09:00 UTCJul 25, 10:25 UTC1h 25m
2026-07-25 FDX2361 SDF → MEM Jul 25, 04:10 UTCJul 25, 04:55 UTC45m
2026-07-24 FDX1467 MEM → SDF Jul 24, 08:55 UTCJul 24, 09:45 UTC50m
2026-07-24 FDX1220 DEN → MEM Jul 24, 03:20 UTCJul 24, 05:10 UTC1h 50m
2026-07-23 FDX1728 IND → DEN Jul 23, 08:40 UTCJul 23, 10:55 UTC2h 15m
2026-07-22 FDX3649 MIA → IND Jul 22, 12:35 UTCJul 22, 14:45 UTC2h 10m
2026-07-22 FDX1461 MEM → MIA Jul 22, 11:10 UTCJul 22, 11:35 UTC25m
2026-07-22 FDX1235 BDL → MEM Jul 22, 01:35 UTCJul 22, 04:20 UTC2h 45m
2026-07-22 FDX1235 BDL → MEM Jul 22, 01:33 UTCJul 22, 04:18 UTC2h 45m
2026-07-21 FDX1435 MEM → BDL Jul 21, 08:50 UTCJul 21, 10:50 UTC2h 0m
2026-07-21 FDX1435 MEM → BDL Jul 21, 08:45 UTCJul 21, 10:50 UTC2h 5m
2026-07-21 FDX1224 RIC → MEM Jul 21, 02:05 UTCJul 21, 03:45 UTC1h 40m
2026-07-18 FDX1542 - Jul 18, 11:15 UTCJul 18, 11:50 UTC35m
2026-07-18 FDX1542 - Jul 18, 09:00 UTCJul 18, 10:15 UTC1h 15m
2026-07-18 FDX1294 - Jul 18, 02:09 UTCJul 18, 04:00 UTC1h 51m
2026-07-18 FDX1294 PHL → MEM Jul 18, 02:07 UTCJul 18, 04:00 UTC1h 53m
2026-07-18 FDX1294 PHL → PHL Jul 18, 01:34 UTCJul 18, 01:39 UTC5m
2026-07-18 FDX1294 PHL → PHL Jul 18, 01:20 UTCJul 18, 01:25 UTC5m
2026-07-17 FDX1439 - Jul 17, 08:35 UTCJul 17, 10:30 UTC1h 55m
2026-07-17 FDX1205 ORD → MEM Jul 17, 02:54 UTCJul 17, 04:14 UTC1h 20m
2026-07-16 FDX1447 - Jul 16, 08:00 UTCJul 16, 09:05 UTC1h 5m
2026-07-16 FDX1447 MEM → ORD Jul 16, 07:55 UTCJul 16, 09:05 UTC1h 10m
2026-07-16 FDX1201 - Jul 16, 02:20 UTCJul 16, 03:15 UTC55m
2026-07-15 FDX1471 - Jul 15, 07:45 UTCJul 15, 08:45 UTC1h 0m
2026-07-15 FDX1235 - Jul 15, 01:45 UTCJul 15, 03:50 UTC2h 5m
2026-07-14 FDX1435 - Jul 14, 08:50 UTCJul 14, 11:10 UTC2h 20m
2026-07-14 FDX2283 IND → MEM Jul 14, 03:55 UTCJul 14, 04:55 UTC1h 0m
2026-07-11 FDX3629 PHX → IND Jul 11, 13:05 UTCJul 11, 16:10 UTC3h 5m
2026-07-11 FDX3629 PHX → IND Jul 11, 13:06 UTCJul 11, 16:05 UTC2h 59m
2026-07-10 FDX1748 - Jul 10, 08:15 UTCJul 10, 11:20 UTC3h 5m
2026-07-10 FDX1635 - Jul 10, 03:00 UTCJul 10, 04:00 UTC1h 0m
2026-07-10 FDX1635 CLT → IND Jul 10, 02:55 UTCJul 10, 04:00 UTC1h 5m
2026-07-09 FDX1492 - Jul 9, 09:10 UTCJul 9, 10:15 UTC1h 5m
2026-07-08 FDX876 - Jul 8, 13:15 UTCJul 8, 15:45 UTC2h 30m
2026-07-08 FDX1879 OAK → SLC Jul 8, 09:35 UTCJul 8, 10:45 UTC1h 10m
2026-07-08 FDX1838 SEA → OAK Jul 8, 04:10 UTCJul 8, 05:50 UTC1h 40m
2026-07-07 FDX397 - Jul 7, 20:10 UTCJul 8, 00:00 UTC3h 50m
2026-07-07 FDX830 - Jul 7, 12:25 UTCJul 7, 13:50 UTC1h 25m
2026-07-07 FDX1458 - Jul 7, 09:05 UTCJul 7, 10:35 UTC1h 30m
2026-07-07 FDX2283 - Jul 7, 04:10 UTCJul 7, 05:10 UTC1h 0m
2026-07-03 FDX1731 - Jul 3, 11:05 UTCJul 3, 11:45 UTC40m
2026-07-03 FDX1731 IND → CLE Jul 3, 08:55 UTCJul 3, 09:35 UTC40m
2026-07-03 FDX1622 - Jul 3, 02:15 UTCJul 3, 03:00 UTC45m
2026-07-02 FDX1446 - Jul 2, 08:30 UTCJul 2, 09:50 UTC1h 20m
2026-07-02 FDX1281 - Jul 2, 02:15 UTCJul 2, 03:20 UTC1h 5m
2026-07-01 FDX1506 - Jul 1, 10:05 UTCJul 1, 10:30 UTC25m
2026-07-01 FDX1506 MEM → GSP Jul 1, 10:01 UTCJul 1, 11:05 UTC1h 4m
2026-07-01 FDX131 - Jul 1, 01:45 UTCJul 1, 04:00 UTC2h 15m
2026-06-30 FDX130 - Jun 30, 09:35 UTCJun 30, 11:45 UTC2h 10m
2026-06-30 FDX1249 - Jun 30, 01:50 UTCJun 30, 03:10 UTC1h 20m

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 N274FE page for operator, model, and routing details .

Mode-S A2B5DA frequently asked

What is Mode-S code A2B5DA?
A2B5DA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N274FE.
Where is Mode-S A2B5DA registered?
Mode-S code A2B5DA 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 A2B5DA broadcasting right now?
Mode-S A2B5DA is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2B5DA, octal 50532732, decimal 10,663,386.
What flights does A2B5DA operate?
Mode-S A2B5DA has broadcast 20 distinct callsigns, including FDX1721, FDX1545, FDX1411, FDX1313, FDX1301.