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sensors Mode-S transponder

A0D21F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N152FE · BOEING 767-300 · operated by FEDERAL EXPRESS CORP

Hex
A0D21F
Octal
50151037
Decimal
10,539,551
Country
US
Tail
N152FE
Type
B763
No current signal · last broadcast Jul 26, 21:45 UTC
Flights observed
226
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:45 UTC

Last known position

Most recent position reported by Mode-S A0D21F.

Country allocation

The ICAO 24-bit address A0D21F 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
FDX3736 FedEx Express 6 2026-07-22
FDX67 - 5 2026-07-15
FDX1207 FedEx Express 5 2026-04-18
FDX568 FedEx Express 4 2026-05-07
FDX3901 - 4 2026-06-27
FDX1151 - 4 2026-06-23
FDX820 FedEx Express 3 2026-06-14
FDX795 - 3 2026-06-22
FDX68 - 3 2026-07-16
FDX468 - 3 2026-06-16
FDX379 FedEx Express 3 2026-05-26
FDX1869 FedEx Express 3 2026-07-24
FDX1804 - 3 2026-07-17
FDX1801 FedEx Express 3 2026-05-06
FDX1706 - 3 2026-07-10
FDX1678 - 3 2026-06-24
FDX1461 FedEx Express 3 2026-04-18
FDX1205 FedEx Express 3 2026-05-30
FDX1155 - 3 2026-06-30
FDX944 FedEx Express 2 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 FDX944 MEM → LAX Jul 26, 21:20 UTCJul 26, 21:45 UTC25m
2026-07-26 FDX405 ATL → MEM Jul 26, 11:30 UTCJul 26, 13:31 UTC2h 1m
2026-07-26 FDX405 ATL → MEM Jul 26, 11:30 UTCJul 26, 13:35 UTC2h 5m
2026-07-25 FDX3709 IND → EWR Jul 25, 21:30 UTCJul 25, 23:00 UTC1h 30m
2026-07-25 FDX3709 IND → EWR Jul 25, 21:29 UTCJul 25, 22:57 UTC1h 28m
2026-07-25 FDX3617 SEA → IND Jul 25, 12:45 UTCJul 25, 16:25 UTC3h 40m
2026-07-24 FDX1869 OAK → LAX Jul 24, 10:10 UTCJul 24, 11:00 UTC50m
2026-07-24 FDX1835 LAX → OAK Jul 24, 05:15 UTCJul 24, 06:05 UTC50m
2026-07-23 FDX3725 IND → LAX Jul 23, 21:15 UTCJul 23, 23:45 UTC2h 30m
2026-07-23 FDX3725 IND → LAX Jul 23, 21:15 UTCJul 24, 00:55 UTC3h 40m
2026-07-23 FDX3619 LAX → IND Jul 23, 13:30 UTCJul 23, 17:05 UTC3h 35m
2026-07-23 FDX1869 OAK → LAX Jul 23, 10:10 UTCJul 23, 11:00 UTC50m
2026-07-23 FDX1835 LAX → OAK Jul 23, 05:15 UTCJul 23, 06:05 UTC50m
2026-07-22 FDX3736 IND → LAX Jul 22, 21:15 UTCJul 23, 01:00 UTC3h 45m
2026-07-22 FDX3631 TPA → IND Jul 22, 12:50 UTCJul 22, 14:40 UTC1h 50m
2026-07-22 FDX54 MTY → MEM Jul 22, 02:45 UTCJul 22, 05:25 UTC2h 40m
2026-07-21 FDX253 MEM → GDL Jul 21, 19:35 UTCJul 21, 21:25 UTC1h 50m
2026-07-21 FDX1234 IAD → MEM Jul 21, 02:20 UTCJul 21, 05:50 UTC3h 30m
2026-07-18 FDX3736 - Jul 18, 21:45 UTCJul 19, 01:20 UTC3h 35m
2026-07-18 FDX3617 - Jul 18, 12:30 UTCJul 18, 16:15 UTC3h 45m
2026-07-17 FDX1869 - Jul 17, 10:10 UTCJul 17, 11:04 UTC55m
2026-07-17 FDX1804 - Jul 17, 05:04 UTCJul 17, 05:39 UTC35m
2026-07-17 FDX1804 RNO → OAK Jul 17, 04:57 UTCJul 17, 05:35 UTC38m
2026-07-17 FDX1804 - Jul 17, 03:05 UTCJul 17, 03:59 UTC55m
2026-07-16 FDX945 MEM → SLC Jul 16, 21:05 UTCJul 16, 23:35 UTC2h 30m
2026-07-16 FDX68 - Jul 16, 03:20 UTCJul 16, 05:05 UTC1h 45m
2026-07-15 FDX67 - Jul 15, 09:50 UTCJul 15, 11:45 UTC1h 55m
2026-07-15 FDX1208 - Jul 15, 01:50 UTCJul 15, 05:10 UTC3h 20m
2026-07-14 FDX302 - Jul 14, 20:20 UTCJul 14, 23:35 UTC3h 14m
2026-07-14 FDX420 - Jul 14, 12:35 UTCJul 14, 14:05 UTC1h 30m
2026-07-14 FDX1718 - Jul 14, 09:30 UTCJul 14, 10:35 UTC1h 5m
2026-07-14 FDX1627 ORD → IND Jul 14, 04:25 UTCJul 14, 05:05 UTC40m
2026-07-14 FDX1627 ORD → IND Jul 14, 04:23 UTCJul 14, 05:00 UTC37m
2026-07-10 FDX1706 - Jul 10, 09:00 UTCJul 10, 09:40 UTC40m
2026-07-10 FDX1706 IND → ORD Jul 10, 08:56 UTCJul 10, 09:35 UTC39m
2026-07-10 FDX1650 - Jul 10, 02:10 UTCJul 10, 05:45 UTC3h 35m
2026-07-10 FDX1650 LAX → IND Jul 10, 02:08 UTCJul 10, 05:41 UTC3h 33m
2026-07-09 FDX1750 - Jul 9, 08:15 UTCJul 9, 11:55 UTC3h 40m
2026-07-09 FDX1618 MSP → IND Jul 9, 02:55 UTCJul 9, 04:05 UTC1h 10m
2026-07-08 FDX878 - Jul 8, 16:40 UTCJul 8, 18:35 UTC1h 55m
2026-07-08 FDX878 DEN → AFW Jul 8, 14:05 UTCJul 8, 15:20 UTC1h 15m
2026-07-08 FDX1728 - Jul 8, 08:40 UTCJul 8, 10:45 UTC2h 5m
2026-07-08 FDX1603 ATL → IND Jul 8, 03:35 UTCJul 8, 04:35 UTC1h 0m
2026-07-07 FDX1774 - Jul 7, 08:50 UTCJul 7, 09:50 UTC1h 0m
2026-07-07 FDX1601 DFW → IND Jul 7, 03:05 UTCJul 7, 04:45 UTC1h 40m
2026-07-03 FDX1253 - Jul 3, 01:45 UTCJul 3, 03:45 UTC2h 0m
2026-07-02 FDX1497 - Jul 2, 08:55 UTCJul 2, 10:50 UTC1h 55m
2026-07-02 FDX68 MTY → MEM Jul 2, 03:05 UTCJul 2, 05:10 UTC2h 5m
2026-07-01 FDX67 - Jul 1, 09:45 UTCJul 1, 11:35 UTC1h 50m
2026-07-01 FDX1365 - Jul 1, 04:10 UTCJul 1, 05:10 UTC1h 0m

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 N152FE page for operator, model, and routing details .

Mode-S A0D21F frequently asked

What is Mode-S code A0D21F?
A0D21F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N152FE.
Where is Mode-S A0D21F registered?
Mode-S code A0D21F 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 A0D21F broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0D21F, octal 50151037, decimal 10,539,551.
What flights does A0D21F operate?
Mode-S A0D21F has broadcast 20 distinct callsigns, including FDX3736, FDX67, FDX1207, FDX568, FDX3901.