Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AD1D3D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N944NN · BOEING 737-800 · operated by BANK OF UTAH TRUSTEE

Hex
AD1D3D
Octal
53216475
Decimal
11,345,213
Country
US
Tail
N944NN
Type
B738
No current signal · last broadcast Jul 26, 20:00 UTC
Flights observed
525
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:00 UTC

Last known position

Most recent position reported by Mode-S AD1D3D.

Country allocation

The ICAO 24-bit address AD1D3D 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
AAL1557 American Airlines 7 2026-04-20
AAL2630 - 6 2026-07-21
AAL2340 American Airlines 6 2026-07-26
AAL1875 - 6 2026-07-01
AAL2885 American Airlines 5 2026-07-22
AAL490 - 4 2026-07-10
AAL3291 - 4 2026-07-13
AAL3153 American Airlines 4 2026-04-22
AAL2805 American Airlines 4 2026-04-23
AAL2433 - 4 2026-06-27
AAL2095 - 4 2026-07-11
AAL1998 American Airlines 4 2026-05-30
AAL1555 American Airlines 4 2026-06-07
AAL1381 American Airlines 4 2026-04-21
AAL1152 American Airlines 4 2026-04-17
AAL903 American Airlines 3 2026-05-17
AAL814 - 3 2026-07-11
AAL3331 American Airlines 3 2026-04-16
AAL3167 American Airlines 3 2026-06-11
AAL3143 American Airlines 3 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL2340 PHL → DFW Jul 26, 16:45 UTCJul 26, 20:00 UTC3h 15m
2026-07-26 AAL589 STL → BOS Jul 26, 13:10 UTCJul 26, 15:07 UTC1h 57m
2026-07-26 AAL589 STL → BOS Jul 26, 13:10 UTCJul 26, 15:15 UTC2h 5m
2026-07-25 AAL610 PHL → DFW Jul 25, 20:05 UTCJul 25, 23:10 UTC3h 5m
2026-07-25 AAL341R QRO → DFW Jul 25, 14:50 UTCJul 25, 16:30 UTC1h 40m
2026-07-25 AAL341R QRO → DFW Jul 25, 14:28 UTCJul 25, 16:29 UTC2h 1m
2026-07-24 AAL1236 EWR → DFW Jul 24, 13:40 UTCJul 24, 15:05 UTC1h 25m
2026-07-24 AAL1236 EWR → DFW Jul 24, 13:38 UTCJul 24, 15:28 UTC1h 50m
2026-07-24 AAL2668 JAC → DFW Jul 24, 02:15 UTCJul 24, 04:45 UTC2h 30m
2026-07-24 AAL2668 JAC → DFW Jul 24, 02:12 UTCJul 24, 04:42 UTC2h 30m
2026-07-23 AAL2668 JAC → DFW Jul 23, 22:35 UTCJul 24, 01:05 UTC2h 30m
2026-07-23 AAL2512 MIA → ORD Jul 23, 20:25 UTCJul 23, 21:10 UTC45m
2026-07-23 AAL2512 MIA → ORD Jul 23, 18:25 UTCJul 23, 19:00 UTC35m
2026-07-23 AAL2591 JFK → MBJ Jul 23, 13:55 UTCJul 23, 16:40 UTC2h 45m
2026-07-23 AAL2958 DFW → SFO Jul 23, 03:16 UTCJul 23, 06:00 UTC2h 44m
2026-07-23 AAL2958 DFW → SFO Jul 23, 03:20 UTCJul 23, 06:00 UTC2h 40m
2026-07-22 AAL1894 RDU → CLT Jul 22, 23:35 UTCJul 23, 01:55 UTC2h 20m
2026-07-22 AAL1894 RDU → CLT Jul 22, 23:31 UTCJul 23, 01:47 UTC2h 16m
2026-07-22 AAL1894 RDU → CLT Jul 22, 20:10 UTCJul 22, 22:15 UTC2h 5m
2026-07-22 AAL2885 CLT → MSP Jul 22, 17:50 UTCJul 22, 18:50 UTC1h 0m
2026-07-22 AAL2885 CLT → MSP Jul 22, 17:45 UTCJul 22, 18:46 UTC1h 1m
2026-07-22 AAL2885 CLT → MSP Jul 22, 15:25 UTCJul 22, 16:35 UTC1h 10m
2026-07-22 AAL2380 - Jul 22, 11:25 UTCJul 22, 13:35 UTC2h 10m
2026-07-21 AAL1156 MIA → BOS Jul 21, 23:10 UTCJul 22, 02:40 UTC3h 30m
2026-07-21 AAL2630 SMF → PHX Jul 21, 20:04 UTCJul 21, 21:43 UTC1h 39m
2026-07-21 AAL2630 SMF → PHX Jul 21, 20:05 UTCJul 21, 21:45 UTC1h 40m
2026-07-21 AAL2630 - Jul 21, 17:20 UTCJul 21, 18:50 UTC1h 30m
2026-07-21 AAL3143 MSP → PHX Jul 21, 12:55 UTCJul 21, 15:35 UTC2h 40m
2026-07-21 AAL3142 LAX → SMF Jul 21, 03:05 UTCJul 21, 05:50 UTC2h 45m
2026-07-20 AAL1790 - Jul 20, 22:10 UTCJul 21, 01:50 UTC3h 39m
2026-07-20 AAL1790 PHX → DTW Jul 20, 17:10 UTCJul 20, 20:45 UTC3h 35m
2026-07-20 AAL3143 MSP → PHX Jul 20, 12:55 UTCJul 20, 15:40 UTC2h 45m
2026-07-20 AAL3142 LAX → SMF Jul 20, 01:55 UTCJul 20, 04:40 UTC2h 45m
2026-07-20 AAL3142 LAX → SMF Jul 20, 01:55 UTCJul 20, 04:40 UTC2h 45m
2026-07-19 AAL2624 JFK → CLT Jul 19, 21:50 UTCJul 20, 00:45 UTC2h 55m
2026-07-19 AAL2269 ORD → BOS Jul 19, 17:15 UTCJul 19, 20:00 UTC2h 45m
2026-07-19 AAL2269 ORD → BOS Jul 19, 13:20 UTCJul 19, 15:45 UTC2h 25m
2026-07-19 AAL1652 ORD → PHL Jul 19, 09:25 UTCJul 19, 11:15 UTC1h 50m
2026-07-18 AAL3057 PHX → CLT Jul 18, 14:50 UTCJul 18, 19:15 UTC4h 25m
2026-07-18 AAL9783 PHL → ORD Jul 18, 12:14 UTCJul 18, 13:39 UTC1h 25m
2026-07-18 AAL9783 PHL → ORD Jul 18, 12:15 UTCJul 18, 13:45 UTC1h 30m
2026-07-17 AAL966 - Jul 17, 23:30 UTCJul 18, 02:05 UTC2h 35m
2026-07-17 AAL1830 - Jul 17, 15:20 UTCJul 17, 20:44 UTC5h 25m
2026-07-17 AAL1066 - Jul 17, 11:20 UTCJul 17, 13:29 UTC2h 10m
2026-07-17 AAL2417 - Jul 17, 05:45 UTCJul 17, 07:44 UTC2h 0m
2026-07-17 AAL2417 DFW → MEX Jul 17, 05:42 UTCJul 17, 07:41 UTC1h 59m
2026-07-15 AAL2652 CUN → DFW Jul 15, 21:35 UTCJul 16, 00:00 UTC2h 25m
2026-07-15 AAL2207 DFW → CUN Jul 15, 17:25 UTCJul 15, 19:45 UTC2h 20m
2026-07-15 AAL1107 - Jul 15, 12:30 UTCJul 15, 15:10 UTC2h 40m
2026-07-15 AAL1104 - Jul 15, 02:35 UTCJul 15, 05:10 UTC2h 35m

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 N944NN page for operator, model, and routing details .

Mode-S AD1D3D frequently asked

What is Mode-S code AD1D3D?
AD1D3D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N944NN.
Where is Mode-S AD1D3D registered?
Mode-S code AD1D3D 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 AD1D3D 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 AD1D3D, octal 53216475, decimal 11,345,213.
What flights does AD1D3D operate?
Mode-S AD1D3D has broadcast 20 distinct callsigns, including AAL1557, AAL2630, AAL2340, AAL1875, AAL2885.