Apparatus

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sensors Mode-S transponder

A1288B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N174FE · BOEING 767-300 · operated by FEDERAL EXPRESS CORP

Hex
A1288B
Octal
50224213
Decimal
10,561,675
Country
US
Tail
N174FE
Type
B763
No current signal · last broadcast 19h ago
Flights observed
89
Distinct callsigns
20
Country
US
Last broadcast
19h ago

Last known position

Most recent position reported by Mode-S A1288B.

Country allocation

The ICAO 24-bit address A1288B 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
FDX142 FedEx Express 4 2026-04-23
FDX141 FedEx Express 4 2026-04-28
FDX1249 FedEx Express 4 2026-05-20
FDX140 FedEx Express 3 2026-04-25
FDX139 FedEx Express 3 2026-04-24
FDX853 FedEx Express 2 2026-04-22
FDX336 FedEx Express 2 2026-04-22
FDX241 FedEx Express 2 2026-04-26
FDX1869 FedEx Express 2 2026-05-22
FDX1610 FedEx Express 2 2026-05-01
FDX1608 FedEx Express 2 2026-04-29
FDX1542 FedEx Express 2 2026-05-09
FDX1405 FedEx Express 2 2026-05-20
FDX1307 FedEx Express 2 2026-05-06
FDX130 FedEx Express 2 2026-04-24
FDX1251 FedEx Express 2 2026-04-23
FDX1218 FedEx Express 2 2026-05-16
FDX1202 FedEx Express 2 2026-05-08
FDX1107 FedEx Express 2 2026-04-17
FDX764 FedEx Express 1 2026-04-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 FDX1400 MEM → FLL May 29, 08:35 UTCMay 29, 10:20 UTC1h 45m
2026-05-29 FDX1369 LAX → MEM May 29, 01:45 UTCMay 29, 05:50 UTC4h 5m
2026-05-28 FDX382 PDX → OAK May 28, 20:00 UTCMay 28, 23:35 UTC3h 35m
2026-05-28 FDX1219 SJC → MEM May 28, 02:10 UTCMay 28, 05:45 UTC3h 35m
2026-05-27 FDX3724 IND → OAK May 27, 19:35 UTCMay 27, 23:35 UTC4h 0m
2026-05-27 FDX1574 MEM → IND May 27, 09:00 UTCMay 27, 09:50 UTC50m
2026-05-27 FDX1344 TUS → MEM May 27, 01:49 UTCMay 27, 04:19 UTC2h 30m
2026-05-23 FDX1414 MEM → TUS May 23, 09:35 UTCMay 23, 12:25 UTC2h 50m
2026-05-23 FDX1234 IAD → MEM May 23, 02:15 UTCMay 23, 05:35 UTC3h 19m
2026-05-22 FDX1869 OAK → LAX May 22, 10:08 UTCMay 22, 10:55 UTC47m
2026-05-22 FDX1869 OAK → LAX May 22, 10:10 UTCMay 22, 11:00 UTC50m
2026-05-21 FDX1468 MEM → OAK May 21, 08:50 UTCMay 21, 12:35 UTC3h 45m
2026-05-21 FDX1247 ORD → MEM May 21, 04:05 UTCMay 21, 05:20 UTC1h 15m
2026-05-20 FDX1405 MEM → ORD May 20, 09:35 UTCMay 20, 10:40 UTC1h 5m
2026-05-20 FDX1249 RDU → MEM May 20, 01:40 UTCMay 20, 03:05 UTC1h 25m
2026-05-19 FDX1449 MEM → RDU May 19, 09:15 UTCMay 19, 10:40 UTC1h 25m
2026-05-19 FDX1248 GSO → MEM May 19, 02:00 UTCMay 19, 03:20 UTC1h 20m
2026-05-17 FDX734 MEM → GSO May 17, 21:40 UTCMay 17, 22:55 UTC1h 15m
2026-05-16 FDX1218 DTW → MEM May 16, 03:25 UTCMay 16, 04:50 UTC1h 25m
2026-05-16 FDX1218 DTW → MEM May 16, 00:40 UTCMay 16, 02:00 UTC1h 20m
2026-05-15 FDX447 PHL → MEM May 15, 11:55 UTCMay 15, 13:45 UTC1h 50m
2026-05-15 FDX1704 IND → PHL May 15, 08:50 UTCMay 15, 10:10 UTC1h 20m
2026-05-15 FDX1617 IAH → IND May 15, 03:15 UTCMay 15, 05:00 UTC1h 45m
2026-05-14 FDX1425 MEM → IAH May 14, 08:20 UTCMay 14, 09:25 UTC1h 5m
2026-05-14 FDX147 YYZ → MEM May 14, 02:10 UTCMay 14, 03:45 UTC1h 35m
2026-05-13 FDX208 MEM → YYZ May 13, 20:45 UTCMay 13, 22:35 UTC1h 50m
2026-05-13 FDX1205 ORD → MEM May 13, 02:50 UTCMay 13, 04:00 UTC1h 10m
2026-05-12 FDX1447 MEM → ORD May 12, 08:25 UTCMay 12, 09:35 UTC1h 10m
2026-05-12 FDX1224 RIC → MEM May 12, 02:45 UTCMay 12, 03:30 UTC45m
2026-05-09 FDX1542 MEM → RIC May 9, 11:15 UTCMay 9, 11:45 UTC30m
2026-05-09 FDX1542 MEM → RIC May 9, 09:10 UTCMay 9, 10:15 UTC1h 5m
2026-05-08 FDX1202 EWR → MEM May 8, 01:35 UTCMay 8, 04:00 UTC2h 25m
2026-05-08 FDX1202 EWR → MEM May 8, 01:31 UTCMay 8, 03:58 UTC2h 27m
2026-05-07 FDX3901 LAX → EWR May 7, 14:25 UTCMay 7, 19:10 UTC4h 45m
2026-05-07 FDX1508 MEM → LAX May 7, 09:25 UTCMay 7, 12:50 UTC3h 25m
2026-05-07 FDX1292 JFK → MEM May 7, 02:45 UTCMay 7, 05:20 UTC2h 35m
2026-05-06 FDX1431 MEM → JFK May 6, 09:45 UTCMay 6, 11:40 UTC1h 55m
2026-05-06 FDX1307 IND → MEM May 6, 03:30 UTCMay 6, 04:35 UTC1h 5m
2026-05-06 FDX1307 IND → MEM May 6, 03:30 UTCMay 6, 04:32 UTC1h 2m
2026-05-05 FDX3646 ONT → IND May 5, 15:15 UTCMay 5, 18:20 UTC3h 5m
2026-05-05 FDX1438 MEM → ONT May 5, 09:30 UTCMay 5, 13:05 UTC3h 35m
2026-05-05 FDX1253 ABE → MEM May 5, 01:50 UTCMay 5, 03:50 UTC2h 0m
2026-05-02 FDX1497 MEM → ABE May 2, 09:20 UTCMay 2, 10:55 UTC1h 35m
2026-05-02 FDX1249 RDU → MEM May 2, 02:45 UTCMay 2, 04:20 UTC1h 35m
2026-05-02 FDX1249 RDU → MEM May 2, 02:44 UTCMay 2, 04:19 UTC1h 35m
2026-05-02 FDX1249 RDU → MEM May 2, 01:50 UTCMay 2, 02:05 UTC15m
2026-05-01 FDX1738 IND → RDU May 1, 08:20 UTCMay 1, 09:25 UTC1h 5m
2026-05-01 FDX1610 BOS → IND May 1, 02:08 UTCMay 1, 04:09 UTC2h 1m
2026-05-01 FDX1610 BOS → IND May 1, 02:10 UTCMay 1, 04:10 UTC2h 0m
2026-04-30 FDX3714 IND → BOS Apr 30, 21:25 UTCApr 30, 23:10 UTC1h 45m

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 N174FE page for operator, model, and routing details .

Mode-S A1288B frequently asked

What is Mode-S code A1288B?
A1288B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N174FE.
Where is Mode-S A1288B registered?
Mode-S code A1288B 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 A1288B broadcasting right now?
No active broadcast right now. Last signal was 19h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1288B, octal 50224213, decimal 10,561,675.
What flights does A1288B operate?
Mode-S A1288B has broadcast 20 distinct callsigns, including FDX142, FDX141, FDX1249, FDX140, FDX139.