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
No current signal · last broadcast 15h ago
Flights observed
97
Distinct callsigns
20
Country
US
Last broadcast
15h ago

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
FDX1545 FedEx Express 4 2026-05-12
FDX1411 FedEx Express 4 2026-05-15
FDX1301 FedEx Express 4 2026-05-13
FDX1617 FedEx Express 3 2026-05-22
FDX1453 FedEx Express 3 2026-06-02
FDX1404 FedEx Express 3 2026-04-17
FDX1238 FedEx Express 3 2026-05-14
FDX815 FedEx Express 2 2026-05-23
FDX533 - 2 2026-04-13
FDX451 FedEx Express 2 2026-04-18
FDX3704 FedEx Express 2 2026-05-07
FDX2260 FedEx Express 2 2026-06-02
FDX1879 FedEx Express 2 2026-05-08
FDX1732 FedEx Express 2 2026-04-29
FDX1721 FedEx Express 2 2026-05-07
FDX1704 FedEx Express 2 2026-05-19
FDX1537 FedEx Express 2 2026-05-09
FDX1437 FedEx Express 2 2026-05-13
FDX1417 FedEx Express 2 2026-05-01
FDX1365 FedEx Express 2 2026-05-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 FDX1453 MEM → MSY Jun 2, 09:25 UTCJun 2, 10:15 UTC50m
2026-06-02 FDX2260 CVG → MEM Jun 2, 03:15 UTCJun 2, 04:20 UTC1h 5m
2026-06-02 FDX2260 CVG → MEM Jun 2, 03:15 UTCJun 2, 04:20 UTC1h 5m
2026-05-29 FDX1460 MEM → CVG May 29, 09:15 UTCMay 29, 10:15 UTC1h 0m
2026-05-28 FDX108 ANC → MEM May 28, 23:19 UTCMay 29, 05:35 UTC6h 16m
2026-05-28 FDX108 ANC → MEM May 28, 23:20 UTCMay 29, 05:35 UTC6h 15m
2026-05-27 FDX37 ANC → HKG May 27, 10:40 UTCMay 27, 15:00 UTC4h 20m
2026-05-27 FDX1803 ONT → OAK May 27, 04:45 UTCMay 27, 05:40 UTC55m
2026-05-24 FDX394 MEM → ONT May 24, 23:00 UTCMay 24, 23:46 UTC46m
2026-05-23 FDX815 LAX → MEM May 23, 12:50 UTCMay 23, 16:05 UTC3h 15m
2026-05-23 FDX815 LAX → MEM May 23, 12:49 UTCMay 23, 16:06 UTC3h 17m
2026-05-22 FDX1750 IND → LAX May 22, 08:40 UTCMay 22, 12:30 UTC3h 49m
2026-05-22 FDX1617 IAH → IND May 22, 03:30 UTCMay 22, 05:10 UTC1h 40m
2026-05-22 FDX1617 IAH → IND May 22, 03:28 UTCMay 22, 05:05 UTC1h 37m
2026-05-21 FDX1425 MEM → IAH May 21, 08:10 UTCMay 21, 09:20 UTC1h 10m
2026-05-21 FDX1365 DFW → MEM May 21, 04:44 UTCMay 21, 05:45 UTC1h 1m
2026-05-21 FDX1365 DFW → MEM May 21, 04:45 UTCMay 21, 05:45 UTC1h 0m
2026-05-20 FDX1136 LRD → AFW May 20, 21:55 UTCMay 20, 22:55 UTC1h 0m
2026-05-20 FDX1155 AFW → IAH May 20, 11:00 UTCMay 20, 11:50 UTC50m
2026-05-20 FDX1155 AFW → IAH May 20, 08:40 UTCMay 20, 09:20 UTC40m
2026-05-20 FDX1100 LAX → AFW May 20, 03:35 UTCMay 20, 06:10 UTC2h 36m
2026-05-19 FDX326 MEM → LAX May 19, 20:45 UTCMay 20, 00:25 UTC3h 40m
2026-05-19 FDX447 PHL → MEM May 19, 12:05 UTCMay 19, 13:55 UTC1h 50m
2026-05-19 FDX1704 IND → PHL May 19, 08:55 UTCMay 19, 10:10 UTC1h 15m
2026-05-19 FDX1704 IND → PHL May 19, 08:50 UTCMay 19, 10:19 UTC1h 29m
2026-05-19 FDX1617 IAH → IND May 19, 03:35 UTCMay 19, 05:20 UTC1h 45m
2026-05-15 FDX1411 MEM → IAH May 15, 09:00 UTCMay 15, 10:10 UTC1h 10m
2026-05-15 FDX1411 MEM → IAH May 15, 09:00 UTCMay 15, 10:05 UTC1h 5m
2026-05-15 FDX1312 SAT → MEM May 15, 03:05 UTCMay 15, 04:20 UTC1h 15m
2026-05-14 FDX1416 MEM → SAT May 14, 09:05 UTCMay 14, 10:25 UTC1h 20m
2026-05-14 FDX1238 BUR → MEM May 14, 02:40 UTCMay 14, 03:50 UTC1h 10m
2026-05-14 FDX1238 BUR → MEM May 14, 02:39 UTCMay 14, 03:50 UTC1h 11m
2026-05-13 FDX1437 MEM → MKE May 13, 09:10 UTCMay 13, 10:30 UTC1h 20m
2026-05-13 FDX1301 SFO → MEM May 13, 01:45 UTCMay 13, 05:15 UTC3h 30m
2026-05-12 FDX1545 MEM → SFO May 12, 08:30 UTCMay 12, 12:05 UTC3h 35m
2026-05-12 FDX1265 HRL → MEM May 12, 02:45 UTCMay 12, 03:25 UTC40m
2026-05-09 FDX1537 MEM → HRL May 9, 13:50 UTCMay 9, 14:35 UTC45m
2026-05-09 FDX1537 MEM → HRL May 9, 09:30 UTCMay 9, 10:40 UTC1h 10m
2026-05-09 FDX1230 SLC → MEM May 9, 02:05 UTCMay 9, 04:30 UTC2h 25m
2026-05-09 FDX1230 SLC → MEM May 9, 02:02 UTCMay 9, 04:29 UTC2h 27m
2026-05-08 FDX1879 OAK → SLC May 8, 09:57 UTCMay 8, 11:14 UTC1h 17m
2026-05-08 FDX1879 OAK → SLC May 8, 09:59 UTCMay 8, 11:19 UTC1h 20m
2026-05-08 FDX1807 PDX → OAK May 8, 04:00 UTCMay 8, 05:14 UTC1h 15m
2026-05-07 FDX3704 IND → PDX May 7, 21:15 UTCMay 8, 01:29 UTC4h 15m
2026-05-07 FDX3704 IND → PDX May 7, 21:14 UTCMay 8, 01:25 UTC4h 11m
2026-05-07 FDX3609 EWR → IND May 7, 13:10 UTCMay 7, 15:00 UTC1h 50m
2026-05-07 FDX1721 IND → EWR May 7, 08:30 UTCMay 7, 09:45 UTC1h 15m
2026-05-07 FDX1721 IND → EWR May 7, 08:29 UTCMay 7, 09:45 UTC1h 16m
2026-05-07 FDX1654 SAN → IND May 7, 02:30 UTCMay 7, 05:55 UTC3h 25m
2026-05-06 FDX1422 MEM → SAN May 6, 11:00 UTCMay 6, 14:35 UTC3h 35m

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?
No active broadcast right now. Last signal was 15h ago.
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 FDX1545, FDX1411, FDX1301, FDX1617, FDX1453.