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sensors Mode-S transponder

A15B4C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N187GJ · BOMBARDIER Regional Jet CRJ-900 · operated by DELTA AIR LINES INC

Hex
A15B4C
Octal
50255514
Decimal
10,574,668
Country
US
Tail
N187GJ
Type
CRJ9
No current signal · last broadcast 23h ago
Flights observed
663
Distinct callsigns
20
Country
US
Last broadcast
23h ago

Last known position

Most recent position reported by Mode-S A15B4C.

Country allocation

The ICAO 24-bit address A15B4C 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
EDV5463 - 7 2026-06-21
EDV5304 - 7 2026-07-12
EDV4993 - 7 2026-07-13
EDV4958 - 7 2026-06-26
EDV4944 Endeavor Air 7 2026-06-08
EDV5529 Endeavor Air 6 2026-07-07
EDV5339 - 6 2026-07-07
EDV5021 - 6 2026-06-25
EDV4962 Endeavor Air 6 2026-05-11
EDV5528 - 5 2026-06-30
EDV5510 Endeavor Air 5 2026-05-05
EDV5468 Endeavor Air 5 2026-06-18
EDV5450 Endeavor Air 5 2026-06-16
EDV5345 Endeavor Air 5 2026-05-15
EDV5223 Endeavor Air 5 2026-05-29
EDV5175 - 5 2026-07-13
EDV5095 - 5 2026-06-25
EDV5084 - 5 2026-06-29
EDV5048 - 5 2026-06-25
EDV4762 - 5 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 EDV4694 ATL → ABY Jul 13, 23:40 UTCJul 14, 00:25 UTC45m
2026-07-13 EDV5175 - Jul 13, 20:00 UTCJul 13, 21:10 UTC1h 10m
2026-07-13 EDV5175 MOB → ATL Jul 13, 19:58 UTCJul 13, 21:02 UTC1h 4m
2026-07-13 EDV5175 - Jul 13, 17:25 UTCJul 13, 18:20 UTC55m
2026-07-13 EDV4930 - Jul 13, 14:30 UTCJul 13, 16:15 UTC1h 45m
2026-07-13 EDV4930 ATL → HPN Jul 13, 11:35 UTCJul 13, 13:25 UTC1h 50m
2026-07-13 EDV4993 - Jul 13, 05:40 UTCJul 13, 06:30 UTC50m
2026-07-13 EDV5443 - Jul 13, 03:40 UTCJul 13, 04:15 UTC35m
2026-07-13 EDV5377 - Jul 13, 01:55 UTCJul 13, 02:30 UTC35m
2026-07-13 EDV5377 - Jul 13, 00:20 UTCJul 13, 00:55 UTC35m
2026-07-12 EDV4953 - Jul 12, 21:35 UTCJul 12, 22:15 UTC40m
2026-07-12 EDV4953 - Jul 12, 19:15 UTCJul 12, 19:45 UTC30m
2026-07-12 EDV5304 - Jul 12, 16:55 UTCJul 12, 17:30 UTC35m
2026-07-12 EDV5304 - Jul 12, 13:30 UTCJul 12, 13:50 UTC20m
2026-07-12 EDV4632 - Jul 12, 10:35 UTCJul 12, 11:50 UTC1h 15m
2026-07-12 EDV4997 - Jul 12, 01:00 UTCJul 12, 01:25 UTC25m
2026-07-11 EDV5243 JFK → DTW Jul 11, 22:20 UTCJul 11, 23:45 UTC1h 25m
2026-07-11 EDV5009 - Jul 11, 18:00 UTCJul 11, 19:05 UTC1h 5m
2026-07-11 EDV4666 LGA → RDU Jul 11, 14:55 UTCJul 11, 16:05 UTC1h 10m
2026-07-11 EDV4670 - Jul 11, 12:20 UTCJul 11, 13:10 UTC50m
2026-07-11 EDV4670 BUF → LGA Jul 11, 12:18 UTCJul 11, 13:16 UTC58m
2026-07-10 EDV5380 LGA → BUF Jul 10, 23:50 UTCJul 11, 00:54 UTC1h 4m
2026-07-10 EDV5380 LGA → BUF Jul 10, 23:50 UTCJul 11, 00:55 UTC1h 5m
2026-07-10 EDV4685 - Jul 10, 20:55 UTCJul 10, 21:55 UTC1h 0m
2026-07-10 EDV5114 BNA → RDU Jul 10, 17:00 UTCJul 10, 18:10 UTC1h 10m
2026-07-10 EDV5114 - Jul 10, 14:25 UTCJul 10, 15:35 UTC1h 10m
2026-07-09 EDV4666 LGA → RDU Jul 9, 12:55 UTCJul 9, 14:10 UTC1h 15m
2026-07-09 EDV5419 - Jul 9, 10:50 UTCJul 9, 11:40 UTC50m
2026-07-09 EDV5320 - Jul 9, 02:05 UTCJul 9, 03:10 UTC1h 5m
2026-07-08 EDV5174 - Jul 8, 23:40 UTCJul 9, 00:45 UTC1h 5m
2026-07-08 EDV5174 CLE → LGA Jul 8, 23:37 UTCJul 9, 00:45 UTC1h 8m
2026-07-08 EDV4954 - Jul 8, 22:20 UTCJul 8, 22:45 UTC25m
2026-07-08 EDV5041 - Jul 8, 19:35 UTCJul 8, 21:00 UTC1h 25m
2026-07-08 EDV4762 - Jul 8, 17:50 UTCJul 8, 18:30 UTC40m
2026-07-08 EDV4757 - Jul 8, 15:35 UTCJul 8, 16:30 UTC55m
2026-07-08 EDV4757 CRW → ATL Jul 8, 15:34 UTCJul 8, 16:37 UTC1h 3m
2026-07-08 EDV4757 ATL → CRW Jul 8, 13:10 UTCJul 8, 14:10 UTC1h 0m
2026-07-08 EDV4912 DHN → ATL Jul 8, 11:10 UTCJul 8, 11:50 UTC40m
2026-07-08 EDV4912 DHN → ATL Jul 8, 11:09 UTCJul 8, 11:45 UTC36m
2026-07-08 EDV4910 ATL → DHN Jul 8, 01:45 UTCJul 8, 02:20 UTC35m
2026-07-07 EDV5529 RDU → LGA Jul 7, 23:40 UTCJul 8, 00:55 UTC1h 15m
2026-07-07 EDV5529 RDU → LGA Jul 7, 23:34 UTCJul 8, 00:52 UTC1h 18m
2026-07-07 EDV5529 RDU → LGA Jul 7, 21:20 UTCJul 7, 22:35 UTC1h 15m
2026-07-07 EDV5288 - Jul 7, 19:10 UTCJul 7, 19:40 UTC30m
2026-07-07 EDV5288 ATL → AGS Jul 7, 17:35 UTCJul 7, 18:05 UTC30m
2026-07-07 EDV5339 - Jul 7, 14:55 UTCJul 7, 16:25 UTC1h 30m
2026-07-07 EDV5339 XNA → ATL Jul 7, 14:52 UTCJul 7, 16:24 UTC1h 32m
2026-07-07 EDV5339 ATL → XNA Jul 7, 12:25 UTCJul 7, 13:50 UTC1h 25m
2026-07-07 EDV5353 - Jul 7, 10:10 UTCJul 7, 11:05 UTC55m
2026-07-07 EDV5451 ATL → FAY Jul 7, 01:30 UTCJul 7, 02:30 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 N187GJ page for operator, model, and routing details .

Mode-S A15B4C frequently asked

What is Mode-S code A15B4C?
A15B4C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N187GJ.
Where is Mode-S A15B4C registered?
Mode-S code A15B4C 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 A15B4C broadcasting right now?
No active broadcast right now. Last signal was 23h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A15B4C, octal 50255514, decimal 10,574,668.
What flights does A15B4C operate?
Mode-S A15B4C has broadcast 20 distinct callsigns, including EDV5463, EDV5304, EDV4993, EDV4958, EDV4944.