Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AB4B34

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N827DN · BOEING 737-900 · operated by DELTA AIR LINES INC

Hex
AB4B34
Octal
52645464
Decimal
11,225,908
Country
US
Tail
N827DN
Type
B739
No current signal · last broadcast Jul 26, 23:00 UTC
Flights observed
514
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 23:00 UTC

Last known position

Most recent position reported by Mode-S AB4B34.

Country allocation

The ICAO 24-bit address AB4B34 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
DAL3115 Delta Air Lines 8 2026-07-25
DAL1640 Delta Air Lines 8 2026-07-25
DAL1422 - 7 2026-07-11
DAL874 Delta Air Lines 6 2026-07-21
DAL719 - 6 2026-06-30
DAL2058 Delta Air Lines 6 2026-07-22
DAL1151 Delta Air Lines 6 2026-06-07
DAL637 Delta Air Lines 5 2026-05-27
DAL2747 - 5 2026-07-06
DAL1978 Delta Air Lines 5 2026-07-23
DAL1910 Delta Air Lines 5 2026-07-23
DAL1296 Delta Air Lines 5 2026-05-31
DAL1004 - 5 2026-07-05
DAL963 - 4 2026-06-16
DAL937 Delta Air Lines 4 2026-07-26
DAL3119 - 4 2026-06-27
DAL2913 Delta Air Lines 4 2026-04-30
DAL2860 Delta Air Lines 4 2026-06-08
DAL2752 Delta Air Lines 4 2026-05-31
DAL2628 Delta Air Lines 4 2026-05-31

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL937 MCI → BOS Jul 26, 21:00 UTCJul 26, 23:00 UTC2h 0m
2026-07-26 DAL937 MCI → BOS Jul 26, 16:25 UTCJul 26, 19:25 UTC3h 0m
2026-07-26 DAL2426 EWR → MSP Jul 26, 13:20 UTCJul 26, 14:45 UTC1h 25m
2026-07-26 DAL2426 EWR → MSP Jul 26, 13:18 UTCJul 26, 14:41 UTC1h 23m
2026-07-25 DAL2879 ATL → ORD Jul 25, 22:05 UTCJul 25, 23:45 UTC1h 40m
2026-07-25 DAL1640 LAX → JFK Jul 25, 20:10 UTCJul 25, 20:20 UTC10m
2026-07-25 DAL1640 LAX → JFK Jul 25, 19:05 UTCJul 25, 20:20 UTC1h 15m
2026-07-25 DAL1640 LAX → JFK Jul 25, 19:02 UTCJul 25, 19:54 UTC52m
2026-07-25 DAL1640 LAX → JFK Jul 25, 16:55 UTCJul 25, 17:40 UTC45m
2026-07-25 DAL2232 DTW → GSP Jul 25, 14:30 UTCJul 25, 15:25 UTC55m
2026-07-25 DAL2232 DTW → GSP Jul 25, 12:15 UTCJul 25, 13:05 UTC50m
2026-07-25 DAL3115 SRQ → ATL Jul 25, 01:40 UTCJul 25, 02:55 UTC1h 15m
2026-07-25 DAL3115 SRQ → ATL Jul 25, 01:39 UTCJul 25, 02:53 UTC1h 14m
2026-07-24 DAL3115 SRQ → ATL Jul 24, 23:00 UTCJul 25, 00:10 UTC1h 10m
2026-07-24 DAL654 JFK → PHX Jul 24, 20:40 UTCJul 24, 21:30 UTC50m
2026-07-24 DAL654 JFK → PHX Jul 24, 13:50 UTCJul 24, 18:40 UTC4h 50m
2026-07-24 DAL933 LGA → MCO Jul 24, 01:55 UTCJul 24, 06:10 UTC4h 15m
2026-07-23 DAL1978 SAL → ATL Jul 23, 20:10 UTCJul 23, 23:20 UTC3h 10m
2026-07-23 DAL1910 ATL → SAL Jul 23, 15:20 UTCJul 23, 18:00 UTC2h 40m
2026-07-23 DAL1396 BOS → ATL Jul 23, 12:10 UTCJul 23, 13:15 UTC1h 5m
2026-07-23 DAL2083 BDL → ATL Jul 23, 02:45 UTCJul 23, 03:45 UTC1h 0m
2026-07-22 DAL2058 GRR → ATL Jul 22, 22:30 UTCJul 23, 00:05 UTC1h 35m
2026-07-22 DAL2058 GRR → ATL Jul 22, 19:35 UTCJul 22, 21:00 UTC1h 25m
2026-07-22 DAL569 ATL → LGA Jul 22, 13:20 UTCJul 22, 17:30 UTC4h 10m
2026-07-22 DAL903 LGA → IAH Jul 22, 01:50 UTCJul 22, 04:45 UTC2h 55m
2026-07-21 DAL874 BOI → ATL Jul 21, 20:10 UTCJul 21, 23:45 UTC3h 35m
2026-07-21 DAL874 BOI → ATL Jul 21, 14:50 UTCJul 21, 18:35 UTC3h 45m
2026-07-21 DAL1247 HPN → ATL Jul 21, 11:45 UTCJul 21, 13:00 UTC1h 15m
2026-07-21 DAL1199 FLL → DTW Jul 21, 03:00 UTCJul 21, 04:35 UTC1h 35m
2026-07-20 DAL2293 ATL → MSY Jul 20, 22:25 UTCJul 21, 00:05 UTC1h 40m
2026-07-20 DAL1575 ATL → JFK Jul 20, 18:21 UTCJul 20, 20:07 UTC1h 46m
2026-07-20 DAL1575 ATL → JFK Jul 20, 18:25 UTCJul 20, 20:15 UTC1h 50m
2026-07-20 DAL886 CVG → SEA Jul 20, 13:10 UTCJul 20, 16:25 UTC3h 15m
2026-07-20 DAL1251 ATL → TUS Jul 20, 04:20 UTCJul 20, 07:20 UTC3h 0m
2026-07-20 DAL1251 ATL → TUS Jul 20, 04:18 UTCJul 20, 07:21 UTC3h 3m
2026-07-19 DAL1978 SAL → ATL Jul 19, 21:50 UTCJul 20, 00:40 UTC2h 50m
2026-07-19 DAL1910 - Jul 19, 16:40 UTCJul 19, 19:00 UTC2h 20m
2026-07-19 DAL1910 ATL → SAL Jul 19, 16:40 UTCJul 19, 19:54 UTC3h 14m
2026-07-19 DAL1396 - Jul 19, 11:55 UTCJul 19, 13:00 UTC1h 5m
2026-07-19 DAL2083 - Jul 19, 02:45 UTCJul 19, 03:45 UTC1h 0m
2026-07-19 DAL2083 ATL → LIT Jul 19, 02:45 UTCJul 19, 03:51 UTC1h 6m
2026-07-18 DAL937 - Jul 18, 21:00 UTCJul 19, 00:35 UTC3h 35m
2026-07-18 DAL937 ATL → TUS Jul 18, 16:20 UTCJul 18, 19:30 UTC3h 10m
2026-07-18 DAL1039 MSP → ATL Jul 18, 12:15 UTCJul 18, 14:10 UTC1h 55m
2026-07-18 DAL1542 LAS → MSP Jul 18, 00:35 UTCJul 18, 03:20 UTC2h 46m
2026-07-18 DAL1542 LAS → MSP Jul 18, 00:32 UTCJul 18, 03:17 UTC2h 45m
2026-07-17 DAL1542 MSP → LAS Jul 17, 20:40 UTCJul 17, 23:25 UTC2h 45m
2026-07-17 DAL1730 MCO → MSP Jul 17, 15:35 UTCJul 17, 18:19 UTC2h 45m
2026-07-17 DAL1730 MSP → MCO Jul 17, 11:10 UTCJul 17, 13:55 UTC2h 45m
2026-07-17 DAL2180 - Jul 17, 02:05 UTCJul 17, 05:10 UTC3h 5m

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 N827DN page for operator, model, and routing details .

Mode-S AB4B34 frequently asked

What is Mode-S code AB4B34?
AB4B34 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N827DN.
Where is Mode-S AB4B34 registered?
Mode-S code AB4B34 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 AB4B34 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 23:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB4B34, octal 52645464, decimal 11,225,908.
What flights does AB4B34 operate?
Mode-S AB4B34 has broadcast 20 distinct callsigns, including DAL3115, DAL1640, DAL1422, DAL874, DAL719.