Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AB4BF7

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N827MH · BOEING 767-400 · operated by DELTA AIR LINES INC

Hex
AB4BF7
Octal
52645767
Decimal
11,226,103
Country
US
Tail
N827MH
Type
B764
No current signal · last broadcast Jul 26, 20:00 UTC
Flights observed
293
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:00 UTC

Last known position

Most recent position reported by Mode-S AB4BF7.

Country allocation

The ICAO 24-bit address AB4BF7 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
DAL30 - 15 2026-07-16
DAL288 Delta Air Lines 15 2026-07-26
DAL90 - 14 2026-07-03
DAL289 Delta Air Lines 14 2026-07-26
DAL91 - 13 2026-07-03
DAL131 - 12 2026-07-17
DAL130 Delta Air Lines 12 2026-07-16
DAL33 - 10 2026-07-16
DAL100 - 10 2026-07-18
DAL60 - 9 2026-07-15
DAL99 - 8 2026-07-19
DAL83 Delta Air Lines 7 2026-06-03
DAL61 - 7 2026-07-14
DAL263 - 7 2026-07-07
DAL98 Delta Air Lines 6 2026-07-23
DAL958 Delta Air Lines 6 2026-06-06
DAL53 Delta Air Lines 6 2026-06-08
DAL52 Delta Air Lines 6 2026-06-08
DAL29 Delta Air Lines 6 2026-07-21
DAL262 - 6 2026-07-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL289 VCE → JFK Jul 26, 11:30 UTCJul 26, 19:50 UTC8h 20m
2026-07-26 DAL288 ICN → SEA Jul 26, 01:25 UTCJul 26, 08:45 UTC7h 21m
2026-07-25 DAL951 JFK → SFO Jul 25, 17:10 UTCJul 25, 21:55 UTC4h 45m
2026-07-25 DAL951 JFK → SFO Jul 25, 17:05 UTCJul 25, 21:48 UTC4h 43m
2026-07-24 DAL747 SEA → JFK Jul 24, 18:30 UTCJul 24, 23:40 UTC5h 10m
2026-07-24 DAL267 AMS → BOS Jul 24, 08:45 UTCJul 24, 15:45 UTC7h 0m
2026-07-23 DAL98 DTW → CDG Jul 23, 22:45 UTCJul 24, 06:05 UTC7h 20m
2026-07-23 DAL98 DTW → CDG Jul 23, 22:40 UTCJul 24, 06:09 UTC7h 29m
2026-07-23 DAL97 CVG → CDG Jul 23, 11:55 UTCJul 23, 13:30 UTC1h 35m
2026-07-23 DAL97 CVG → CDG Jul 23, 11:51 UTCJul 23, 20:23 UTC8h 32m
2026-07-23 DAL266 JFK → CDG Jul 23, 00:25 UTCJul 23, 01:45 UTC1h 20m
2026-07-23 DAL266 JFK → CDG Jul 23, 00:24 UTCJul 23, 07:17 UTC6h 53m
2026-07-22 DAL289 VCE → JFK Jul 22, 11:35 UTCJul 22, 20:15 UTC8h 40m
2026-07-22 DAL288 ICN → SEA Jul 22, 01:30 UTCJul 22, 03:05 UTC1h 35m
2026-07-21 DAL29 CDG → ATL Jul 21, 12:15 UTCJul 21, 20:05 UTC7h 50m
2026-07-21 DAL24 ATL → DUS Jul 21, 01:10 UTCJul 21, 10:00 UTC8h 50m
2026-07-19 DAL99 - Jul 19, 11:25 UTCJul 19, 20:25 UTC9h 0m
2026-07-18 DAL100 ATL → CDG Jul 18, 22:26 UTCJul 19, 06:28 UTC8h 2m
2026-07-18 DAL100 ATL → CDG Jul 18, 22:25 UTCJul 19, 06:35 UTC8h 10m
2026-07-18 DAL99 CDG → ATL Jul 18, 10:50 UTCJul 18, 19:35 UTC8h 45m
2026-07-18 DAL99 CDG → ATL Jul 18, 10:50 UTCJul 18, 19:31 UTC8h 41m
2026-07-17 DAL100 ATL → CDG Jul 17, 22:40 UTCJul 18, 06:55 UTC8h 15m
2026-07-17 DAL100 - Jul 17, 22:40 UTCJul 18, 07:00 UTC8h 21m
2026-07-17 DAL131 MUC → ATL Jul 17, 09:35 UTCJul 17, 19:05 UTC9h 30m
2026-07-16 DAL130 ATL → MUC Jul 16, 22:19 UTCJul 17, 07:05 UTC8h 45m
2026-07-16 DAL130 ATL → MUC Jul 16, 22:19 UTCJul 17, 07:05 UTC8h 46m
2026-07-16 DAL33 - Jul 16, 11:05 UTCJul 16, 19:25 UTC8h 20m
2026-07-16 DAL30 - Jul 16, 03:20 UTCJul 16, 08:35 UTC5h 15m
2026-07-16 DAL30 - Jul 16, 00:30 UTCJul 16, 03:15 UTC2h 45m
2026-07-15 DAL60 - Jul 15, 04:30 UTCJul 15, 09:10 UTC4h 40m
2026-07-15 DAL60 - Jul 15, 00:05 UTCJul 15, 00:20 UTC15m
2026-07-15 DAL60 GIG → ATL Jul 15, 00:02 UTCJul 15, 09:05 UTC9h 3m
2026-07-14 DAL61 ATL → GIG Jul 14, 04:00 UTCJul 14, 12:50 UTC8h 50m
2026-07-13 DAL33 - Jul 13, 08:35 UTCJul 13, 16:50 UTC8h 15m
2026-07-12 DAL30 - Jul 12, 21:25 UTCJul 12, 23:40 UTC2h 15m
2026-07-12 DAL30 ATL → LHR Jul 12, 21:25 UTCJul 13, 05:18 UTC7h 53m
2026-07-12 DAL131 MUC → ATL Jul 12, 08:45 UTCJul 12, 18:15 UTC9h 30m
2026-07-12 DAL131 MUC → ATL Jul 12, 08:44 UTCJul 12, 18:13 UTC9h 29m
2026-07-11 DAL130 ATL → MUC Jul 11, 21:45 UTCJul 12, 06:22 UTC8h 37m
2026-07-11 DAL130 - Jul 11, 21:45 UTCJul 12, 00:35 UTC2h 50m
2026-07-11 DAL33 LHR → ATL Jul 11, 08:45 UTCJul 11, 17:10 UTC8h 25m
2026-07-10 DAL30 ATL → LHR Jul 10, 21:20 UTCJul 11, 05:10 UTC7h 50m
2026-07-10 DAL60 - Jul 10, 03:50 UTCJul 10, 10:35 UTC6h 45m
2026-07-10 DAL60 - Jul 10, 01:40 UTCJul 10, 01:55 UTC15m
2026-07-09 DAL61 - Jul 9, 14:45 UTCJul 9, 23:25 UTC8h 40m
2026-07-09 DAL61 ATL → GIG Jul 9, 14:41 UTCJul 9, 23:22 UTC8h 41m
2026-07-08 DAL25 NCE → ATL Jul 8, 08:35 UTCJul 8, 18:00 UTC9h 25m
2026-07-07 DAL28 JFK → NCE Jul 7, 22:35 UTCJul 8, 06:00 UTC7h 25m
2026-07-07 DAL263 - Jul 7, 10:30 UTCJul 7, 17:55 UTC7h 25m
2026-07-07 DAL263 CDG → JFK Jul 7, 10:28 UTCJul 7, 17:49 UTC7h 21m

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 N827MH page for operator, model, and routing details .

Mode-S AB4BF7 frequently asked

What is Mode-S code AB4BF7?
AB4BF7 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N827MH.
Where is Mode-S AB4BF7 registered?
Mode-S code AB4BF7 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 AB4BF7 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB4BF7, octal 52645767, decimal 11,226,103.
What flights does AB4BF7 operate?
Mode-S AB4BF7 has broadcast 20 distinct callsigns, including DAL30, DAL288, DAL90, DAL289, DAL91.