Apparatus

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sensors Mode-S transponder

AB1122

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N812DN · BOEING 737-900 · operated by DELTA AIR LINES INC

Hex
AB1122
Octal
52610442
Decimal
11,211,042
Country
US
Tail
N812DN
Type
B739
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
511
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S AB1122.

Country allocation

The ICAO 24-bit address AB1122 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
DAL2905 Delta Air Lines 8 2026-06-09
DAL1401 Delta Air Lines 8 2026-05-01
DAL1801 Delta Air Lines 7 2026-07-25
DAL1800 Delta Air Lines 7 2026-07-25
DAL2160 Delta Air Lines 6 2026-05-06
DAL1437 - 6 2026-06-28
DAL354 - 5 2026-06-13
DAL2474 Delta Air Lines 5 2026-05-05
DAL2380 Delta Air Lines 5 2026-07-19
DAL2356 - 5 2026-07-17
DAL2238 Delta Air Lines 5 2026-05-06
DAL2215 Delta Air Lines 5 2026-05-02
DAL1918 Delta Air Lines 5 2026-07-24
DAL1907 Delta Air Lines 5 2026-07-24
DAL1715 Delta Air Lines 5 2026-06-02
DAL971 - 4 2026-07-03
DAL567 - 4 2026-06-14
DAL337 Delta Air Lines 4 2026-05-20
DAL2640 Delta Air Lines 4 2026-06-03
DAL2095 Delta Air Lines 4 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL1992 ATL → GDL Jul 26, 14:35 UTCJul 26, 22:30 UTC7h 55m
2026-07-26 DAL2469 LGA → RSW Jul 26, 10:05 UTCJul 26, 11:10 UTC1h 5m
2026-07-26 DAL1545 BNA → DTW Jul 26, 00:05 UTCJul 26, 01:15 UTC1h 10m
2026-07-25 DAL1800 MBJ → ATL Jul 25, 20:20 UTCJul 25, 22:05 UTC1h 45m
2026-07-25 DAL1801 ATL → MBJ Jul 25, 15:25 UTCJul 25, 16:50 UTC1h 25m
2026-07-25 DAL1801 ATL → MBJ Jul 25, 15:21 UTCJul 25, 17:39 UTC2h 18m
2026-07-25 DAL686 SLC → SFO Jul 25, 12:44 UTCJul 25, 13:26 UTC42m
2026-07-25 DAL686 SLC → SFO Jul 25, 12:45 UTCJul 25, 13:30 UTC45m
2026-07-25 DAL2860 ATL → SAV Jul 25, 04:30 UTCJul 25, 05:10 UTC40m
2026-07-25 DAL2293 ATL → MSY Jul 25, 00:55 UTCJul 25, 02:35 UTC1h 40m
2026-07-24 DAL1918 NAS → JFK Jul 24, 17:45 UTCJul 24, 20:20 UTC2h 35m
2026-07-24 DAL1918 NAS → JFK Jul 24, 17:18 UTCJul 24, 20:12 UTC2h 54m
2026-07-24 DAL1907 JFK → NAS Jul 24, 12:33 UTCJul 24, 15:14 UTC2h 41m
2026-07-24 DAL1907 JFK → NAS Jul 24, 12:35 UTCJul 24, 15:00 UTC2h 25m
2026-07-23 DAL1643 ATL → MSN Jul 23, 23:25 UTCJul 24, 02:45 UTC3h 20m
2026-07-23 DAL1643 ATL → MSN Jul 23, 18:20 UTCJul 23, 21:35 UTC3h 15m
2026-07-23 DAL1411 JAX → JFK Jul 23, 13:00 UTCJul 23, 16:15 UTC3h 15m
2026-07-22 DAL1233 JFK → AUS Jul 22, 23:00 UTCJul 23, 02:20 UTC3h 20m
2026-07-22 DAL1233 JFK → AUS Jul 22, 22:59 UTCJul 23, 02:19 UTC3h 20m
2026-07-22 DAL1918 NAS → JFK Jul 22, 18:55 UTCJul 22, 21:05 UTC2h 10m
2026-07-22 DAL1918 NAS → JFK Jul 22, 18:30 UTCJul 22, 21:00 UTC2h 30m
2026-07-22 DAL1907 JFK → NAS Jul 22, 13:50 UTCJul 22, 16:36 UTC2h 46m
2026-07-22 DAL1907 JFK → NAS Jul 22, 13:55 UTCJul 22, 16:20 UTC2h 25m
2026-07-22 DAL2095 VPS → ATL Jul 22, 01:05 UTCJul 22, 04:10 UTC3h 5m
2026-07-22 DAL2095 VPS → ATL Jul 22, 01:03 UTCJul 22, 04:04 UTC3h 1m
2026-07-21 DAL2042 JFK → TPA Jul 21, 11:50 UTCJul 21, 13:55 UTC2h 5m
2026-07-21 DAL2042 JFK → TPA Jul 21, 11:45 UTCJul 21, 13:54 UTC2h 9m
2026-07-21 DAL2095 TPA → JFK Jul 21, 01:40 UTCJul 21, 04:00 UTC2h 20m
2026-07-21 DAL2095 TPA → JFK Jul 21, 01:40 UTCJul 21, 03:52 UTC2h 12m
2026-07-20 DAL2404 MSP → BZN Jul 20, 21:35 UTCJul 20, 23:50 UTC2h 15m
2026-07-20 DAL2454 TPA → LGA Jul 20, 01:15 UTCJul 20, 03:25 UTC2h 10m
2026-07-19 DAL2093 JFK → TPA Jul 19, 21:25 UTCJul 19, 23:50 UTC2h 25m
2026-07-19 DAL2380 MSY → LGA Jul 19, 16:05 UTCJul 19, 17:55 UTC1h 50m
2026-07-19 DAL2380 MSY → LGA Jul 19, 16:05 UTCJul 19, 17:48 UTC1h 43m
2026-07-19 DAL2299 - Jul 19, 12:20 UTCJul 19, 13:15 UTC55m
2026-07-19 DAL2299 SDF → ATL Jul 19, 12:16 UTCJul 19, 13:12 UTC56m
2026-07-19 DAL2624 - Jul 19, 03:05 UTCJul 19, 04:00 UTC55m
2026-07-19 DAL2624 ATL → SDF Jul 19, 03:05 UTCJul 19, 03:58 UTC53m
2026-07-18 DAL1987 MBJ → ATL Jul 18, 23:05 UTCJul 19, 01:00 UTC1h 55m
2026-07-18 DAL1949 ATL → MBJ Jul 18, 17:55 UTCJul 18, 19:30 UTC1h 35m
2026-07-18 DAL1949 ATL → MBJ Jul 18, 17:54 UTCJul 18, 20:23 UTC2h 29m
2026-07-18 DAL2734 - Jul 18, 14:20 UTCJul 18, 15:30 UTC1h 10m
2026-07-18 DAL2150 MSP → FLL Jul 18, 02:50 UTCJul 18, 04:05 UTC1h 15m
2026-07-17 DAL1956 - Jul 17, 22:55 UTCJul 18, 00:35 UTC1h 40m
2026-07-17 DAL1947 - Jul 17, 19:20 UTCJul 17, 20:44 UTC1h 25m
2026-07-17 DAL2356 - Jul 17, 16:15 UTCJul 17, 16:55 UTC40m
2026-07-17 DAL2356 - Jul 17, 13:45 UTCJul 17, 14:35 UTC50m
2026-07-17 DAL2734 - Jul 17, 09:45 UTCJul 17, 11:00 UTC1h 15m
2026-07-17 DAL1339 ATL → CLE Jul 17, 00:18 UTCJul 17, 01:37 UTC1h 19m
2026-07-17 DAL1339 ATL → CLE Jul 17, 00:20 UTCJul 17, 01:39 UTC1h 20m

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 N812DN page for operator, model, and routing details .

Mode-S AB1122 frequently asked

What is Mode-S code AB1122?
AB1122 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N812DN.
Where is Mode-S AB1122 registered?
Mode-S code AB1122 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 AB1122 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB1122, octal 52610442, decimal 11,211,042.
What flights does AB1122 operate?
Mode-S AB1122 has broadcast 20 distinct callsigns, including DAL2905, DAL1401, DAL1801, DAL1800, DAL2160.