Apparatus

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sensors Mode-S transponder

A4556D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N379CA · BOMBARDIER Regional Jet CRJ-700 · operated by DELTA AIR LINES INC

Hex
A4556D
Octal
51052555
Decimal
10,769,773
Country
US
Tail
N379CA
Type
CRJ7
Broadcasting now · callsign EDV4891 · 12,300 ft
Flights observed
776
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:15 UTC

Current position

A4556D is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A4556D 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
EDV4982 - 20 2026-07-17
EDV4782 - 20 2026-07-18
EDV4867 - 17 2026-07-13
EDV5063 - 14 2026-07-08
EDV4899 - 13 2026-07-15
EDV4844 Endeavor Air 13 2026-06-05
EDV5518 - 12 2026-07-15
EDV5464 - 12 2026-07-15
EDV5142 - 12 2026-07-17
EDV5017 - 12 2026-07-11
EDV4654 Endeavor Air 12 2026-07-24
EDV4820 - 11 2026-07-18
EDV4923 Endeavor Air 10 2026-07-22
EDV4988 - 9 2026-07-09
EDV4907 Endeavor Air 9 2026-07-23
EDV5473 - 8 2026-07-16
EDV5122 Endeavor Air 8 2026-06-03
EDV4991 Endeavor Air 8 2026-04-28
EDV4639 Endeavor Air 8 2026-05-25
EDV5534 Endeavor Air 7 2026-04-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EDV4941 STL → LGA Jul 26, 20:30 UTCJul 26, 21:15 UTC45m
2026-07-26 EDV5257 LGA → CHO Jul 26, 18:30 UTCJul 26, 19:20 UTC50m
2026-07-26 EDV5257 LGA → CHO Jul 26, 16:55 UTCJul 26, 17:40 UTC45m
2026-07-26 EDV5192 LGA → CVG Jul 26, 15:20 UTCJul 26, 15:45 UTC25m
2026-07-26 EDV5192 LGA → CVG Jul 26, 15:20 UTCJul 26, 15:44 UTC24m
2026-07-26 EDV5190 CHS → LGA Jul 26, 13:30 UTCJul 26, 14:35 UTC1h 5m
2026-07-26 EDV5190 CHS → LGA Jul 26, 13:30 UTCJul 26, 14:36 UTC1h 6m
2026-07-26 EDV5355 LGA → RDU Jul 26, 10:20 UTCJul 26, 10:55 UTC35m
2026-07-26 EDV5355 LGA → RDU Jul 26, 10:16 UTCJul 26, 10:58 UTC42m
2026-07-26 EDV5421 CVG → LGA Jul 26, 00:05 UTCJul 26, 00:40 UTC35m
2026-07-25 EDV4917 BHM → LGA Jul 25, 21:00 UTCJul 25, 21:50 UTC50m
2026-07-25 EDV4917 BHM → LGA Jul 25, 20:55 UTCJul 25, 21:51 UTC56m
2026-07-25 EDV4971 MSN → LGA Jul 25, 18:15 UTCJul 25, 19:50 UTC1h 35m
2026-07-25 EDV4998 TYS → LGA Jul 25, 16:00 UTCJul 25, 16:50 UTC50m
2026-07-25 EDV4998 TYS → LGA Jul 25, 14:20 UTCJul 25, 15:00 UTC40m
2026-07-25 EDV5523 RDU → EWR Jul 25, 10:55 UTCJul 25, 13:00 UTC2h 5m
2026-07-25 EDV5138 LGA → ALB Jul 25, 01:20 UTCJul 25, 02:25 UTC1h 5m
2026-07-25 EDV5138 LGA → ALB Jul 25, 01:18 UTCJul 25, 02:20 UTC1h 2m
2026-07-24 EDV4891 SDF → LGA Jul 24, 21:50 UTCJul 24, 22:50 UTC1h 0m
2026-07-24 EDV4891 SDF → LGA Jul 24, 19:45 UTCJul 24, 20:40 UTC55m
2026-07-24 EDV4653 JFK → JAX Jul 24, 17:05 UTCJul 24, 18:30 UTC1h 25m
2026-07-24 EDV4653 JFK → JAX Jul 24, 17:02 UTCJul 24, 18:24 UTC1h 22m
2026-07-24 EDV4654 JFK → DTW Jul 24, 14:25 UTCJul 24, 15:45 UTC1h 20m
2026-07-24 EDV4654 JFK → DTW Jul 24, 14:21 UTCJul 24, 15:38 UTC1h 17m
2026-07-24 EDV5196 LGA → CHS Jul 24, 11:20 UTCJul 24, 12:30 UTC1h 10m
2026-07-24 EDV5138 LGA → ALB Jul 24, 00:05 UTCJul 24, 01:10 UTC1h 5m
2026-07-24 EDV5138 LGA → ALB Jul 24, 00:04 UTCJul 24, 01:10 UTC1h 6m
2026-07-23 EDV5511 ORF → MSP Jul 23, 22:15 UTCJul 23, 22:40 UTC25m
2026-07-23 EDV5511 ORF → MSP Jul 23, 20:40 UTCJul 23, 21:05 UTC25m
2026-07-23 EDV4688 JFK → MCI Jul 23, 18:30 UTCJul 23, 19:10 UTC40m
2026-07-23 EDV4688 JFK → MCI Jul 23, 16:40 UTCJul 23, 17:25 UTC45m
2026-07-23 EDV4674 RDU → LGA Jul 23, 14:25 UTCJul 23, 15:05 UTC40m
2026-07-23 EDV4712 JFK → CLE Jul 23, 12:10 UTCJul 23, 13:10 UTC1h 0m
2026-07-23 EDV4702 ORF → LGA Jul 23, 10:25 UTCJul 23, 10:50 UTC25m
2026-07-23 EDV4907 LGA → RDU Jul 23, 03:10 UTCJul 23, 03:30 UTC20m
2026-07-23 EDV4907 LGA → RDU Jul 23, 03:09 UTCJul 23, 03:28 UTC19m
2026-07-22 EDV4923 BNA → LGA Jul 22, 23:55 UTCJul 23, 01:40 UTC1h 45m
2026-07-22 EDV4923 BNA → LGA Jul 22, 21:30 UTCJul 22, 22:45 UTC1h 15m
2026-07-22 EDV5539 BWI → LGA Jul 22, 18:20 UTCJul 22, 19:45 UTC1h 25m
2026-07-22 EDV5256 YYZ → DTW Jul 22, 16:25 UTCJul 22, 17:10 UTC45m
2026-07-22 EDV5251 - Jul 22, 14:15 UTCJul 22, 14:55 UTC40m
2026-07-22 EDV5088 - Jul 22, 11:55 UTCJul 22, 13:10 UTC1h 15m
2026-07-22 EDV5407 JAX → LGA Jul 22, 01:15 UTCJul 22, 02:30 UTC1h 15m
2026-07-22 EDV5407 JAX → LGA Jul 22, 01:12 UTCJul 22, 02:21 UTC1h 9m
2026-07-21 EDV4980 YYZ → DTW Jul 21, 23:15 UTCJul 21, 23:58 UTC43m
2026-07-21 EDV4980 YYZ → DTW Jul 21, 23:15 UTCJul 22, 00:00 UTC45m
2026-07-21 EDV5406 CLT → LGA Jul 21, 21:25 UTCJul 21, 22:10 UTC45m
2026-07-21 EDV5406 CLT → LGA Jul 21, 21:09 UTCJul 21, 21:55 UTC46m
2026-07-21 EDV5148 YUL → DTW Jul 21, 17:00 UTCJul 21, 18:45 UTC1h 45m
2026-07-21 EDV5148 YUL → DTW Jul 21, 16:57 UTCJul 21, 18:27 UTC1h 30m

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 N379CA page for operator, model, and routing details .

Mode-S A4556D frequently asked

What is Mode-S code A4556D?
A4556D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N379CA.
Where is Mode-S A4556D registered?
Mode-S code A4556D 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 A4556D broadcasting right now?
Yes. Mode-S A4556D is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4556D, octal 51052555, decimal 10,769,773.
What flights does A4556D operate?
Mode-S A4556D has broadcast 20 distinct callsigns, including EDV4982, EDV4782, EDV4867, EDV5063, EDV4899.