Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AB4C1D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N827NW · AIRBUS A-330-300 · operated by BANK OF UTAH TRUSTEE

Hex
AB4C1D
Octal
52646035
Decimal
11,226,141
Country
US
Tail
N827NW
Type
A333
No current signal · last broadcast Jul 26, 20:25 UTC
Flights observed
320
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:25 UTC

Last known position

Most recent position reported by Mode-S AB4C1D.

Country allocation

The ICAO 24-bit address AB4C1D 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
DAL259 Delta Air Lines 17 2026-04-23
DAL258 Delta Air Lines 17 2026-04-22
DAL228 Delta Air Lines 13 2026-07-23
DAL153 Delta Air Lines 13 2026-07-24
DAL312 Delta Air Lines 12 2026-07-07
DAL277 - 12 2026-07-15
DAL276 - 12 2026-07-15
DAL309 - 11 2026-07-08
DAL207 - 10 2026-07-16
DAL152 Delta Air Lines 10 2026-07-24
DAL112 - 10 2026-07-15
DAL105 - 10 2026-07-02
DAL313 - 9 2026-07-07
DAL113 Delta Air Lines 9 2026-07-26
DAL194 - 8 2026-07-11
DAL135 Delta Air Lines 8 2026-06-22
DAL251 - 7 2026-07-11
DAL206 Delta Air Lines 7 2026-07-26
DAL127 Delta Air Lines 7 2026-07-01
DAL837 - 6 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL113 FCO → BOS Jul 26, 11:55 UTCJul 26, 14:10 UTC2h 15m
2026-07-26 DAL113 FCO → BOS Jul 26, 11:54 UTCJul 26, 20:15 UTC8h 21m
2026-07-26 DAL206 DTW → FCO Jul 26, 00:45 UTCJul 26, 09:15 UTC8h 31m
2026-07-25 DAL229 CDG → CVG Jul 25, 09:00 UTCJul 25, 16:55 UTC7h 55m
2026-07-24 DAL152 JFK → FCO Jul 24, 22:53 UTCJul 25, 06:21 UTC7h 28m
2026-07-24 DAL152 JFK → FCO Jul 24, 22:55 UTCJul 24, 23:40 UTC45m
2026-07-24 DAL153 FCO → JFK Jul 24, 09:15 UTCJul 24, 18:10 UTC8h 55m
2026-07-23 DAL228 CVG → CDG Jul 23, 22:55 UTCJul 24, 01:15 UTC2h 20m
2026-07-23 DAL228 CVG → CDG Jul 23, 22:54 UTCJul 24, 06:13 UTC7h 19m
2026-07-23 DAL23 MUC → DTW Jul 23, 07:10 UTCJul 23, 09:30 UTC2h 20m
2026-07-23 DAL23 MUC → DTW Jul 23, 07:09 UTCJul 23, 16:04 UTC8h 55m
2026-07-22 DAL22 DTW → MUC Jul 22, 20:55 UTCJul 23, 04:40 UTC7h 45m
2026-07-22 DAL23 MUC → DTW Jul 22, 07:08 UTCJul 22, 16:11 UTC9h 3m
2026-07-21 DAL22 DTW → MUC Jul 21, 20:50 UTCJul 22, 04:55 UTC8h 5m
2026-07-21 DAL229 CDG → DTW Jul 21, 09:05 UTCJul 21, 17:23 UTC8h 18m
2026-07-20 DAL152 - Jul 20, 21:55 UTCJul 21, 05:15 UTC7h 19m
2026-07-20 DAL152 MSP → CDG Jul 20, 21:51 UTCJul 21, 05:42 UTC7h 51m
2026-07-20 DAL153 FCO → JFK Jul 20, 09:25 UTCJul 20, 11:00 UTC1h 35m
2026-07-20 DAL153 FCO → JFK Jul 20, 09:20 UTCJul 20, 18:02 UTC8h 42m
2026-07-19 DAL228 CVG → CDG Jul 19, 22:50 UTCJul 20, 06:20 UTC7h 30m
2026-07-19 DAL228 CVG → CDG Jul 19, 22:47 UTCJul 20, 06:16 UTC7h 29m
2026-07-19 DAL23 MUC → DTW Jul 19, 07:15 UTCJul 19, 15:55 UTC8h 40m
2026-07-18 DAL22 - Jul 18, 21:10 UTCJul 19, 05:05 UTC7h 55m
2026-07-18 DAL229 - Jul 18, 09:05 UTCJul 18, 17:05 UTC8h 0m
2026-07-17 DAL152 - Jul 17, 21:50 UTCJul 18, 05:40 UTC7h 51m
2026-07-17 DAL152 MSP → CDG Jul 17, 21:48 UTCJul 18, 05:33 UTC7h 45m
2026-07-17 DAL153 - Jul 17, 09:10 UTCJul 17, 17:44 UTC8h 35m
2026-07-17 DAL153 CDG → MSP Jul 17, 09:04 UTCJul 17, 17:40 UTC8h 36m
2026-07-16 DAL228 CVG → CDG Jul 16, 22:59 UTCJul 17, 06:29 UTC7h 30m
2026-07-16 DAL228 CVG → CDG Jul 16, 22:58 UTCJul 17, 06:20 UTC7h 22m
2026-07-16 DAL207 - Jul 16, 08:00 UTCJul 16, 17:20 UTC9h 20m
2026-07-15 DAL112 BOS → FCO Jul 15, 21:50 UTCJul 16, 05:25 UTC7h 35m
2026-07-15 DAL277 NCE → BOS Jul 15, 10:40 UTCJul 15, 18:40 UTC8h 0m
2026-07-15 DAL277 NCE → BOS Jul 15, 10:38 UTCJul 15, 18:36 UTC7h 58m
2026-07-15 DAL276 BOS → NCE Jul 15, 00:05 UTCJul 15, 07:11 UTC7h 6m
2026-07-15 DAL276 BOS → NCE Jul 15, 00:10 UTCJul 15, 07:20 UTC7h 10m
2026-07-14 DAL113 - Jul 14, 12:00 UTCJul 14, 20:15 UTC8h 15m
2026-07-14 DAL113 FCO → BOS Jul 14, 11:56 UTCJul 14, 20:10 UTC8h 14m
2026-07-14 DAL206 - Jul 14, 00:25 UTCJul 14, 09:10 UTC8h 45m
2026-07-13 DAL207 - Jul 13, 07:25 UTCJul 13, 10:20 UTC2h 55m
2026-07-13 DAL207 FCO → DTW Jul 13, 07:21 UTCJul 13, 16:50 UTC9h 29m
2026-07-12 DAL112 BOS → FCO Jul 12, 21:04 UTCJul 13, 04:44 UTC7h 40m
2026-07-12 DAL112 - Jul 12, 21:05 UTCJul 12, 22:25 UTC1h 20m
2026-07-12 DAL277 - Jul 12, 09:55 UTCJul 12, 11:15 UTC1h 20m
2026-07-12 DAL277 NCE → BOS Jul 12, 09:56 UTCJul 12, 17:41 UTC7h 45m
2026-07-12 DAL276 BOS → NCE Jul 12, 00:26 UTCJul 12, 07:32 UTC7h 6m
2026-07-12 DAL276 - Jul 12, 00:30 UTCJul 12, 01:45 UTC1h 15m
2026-07-11 DAL251 - Jul 11, 14:35 UTCJul 11, 22:15 UTC7h 40m
2026-07-11 DAL194 ATL → BCN Jul 11, 03:35 UTCJul 11, 12:15 UTC8h 40m
2026-07-10 DAL55 - Jul 10, 15:40 UTCJul 10, 16:35 UTC55m

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 N827NW page for operator, model, and routing details .

Mode-S AB4C1D frequently asked

What is Mode-S code AB4C1D?
AB4C1D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N827NW.
Where is Mode-S AB4C1D registered?
Mode-S code AB4C1D 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 AB4C1D broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB4C1D, octal 52646035, decimal 11,226,141.
What flights does AB4C1D operate?
Mode-S AB4C1D has broadcast 20 distinct callsigns, including DAL259, DAL258, DAL228, DAL153, DAL312.