Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A22D7B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N23983 · BOEING 787-9 Dreamliner · operated by UNITED AIRLINES INC

Hex
A22D7B
Octal
50426573
Decimal
10,628,475
Country
US
Tail
N23983
Type
B789
Broadcasting now · callsign UAL2692 · 38,000 ft
Flights observed
186
Distinct callsigns
20
Country
US
Last broadcast
39m ago

Current position

A22D7B is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A22D7B 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
UAL153 United Airlines 16 2026-07-05
UAL152 United Airlines 16 2026-07-04
UAL199 United Airlines 9 2026-07-06
UAL123 - 9 2026-06-12
UAL83 - 7 2026-07-13
UAL82 - 7 2026-07-13
UAL198 - 7 2026-07-05
UAL1855 - 6 2026-06-28
UAL122 United Airlines 6 2026-06-11
UAL2692 - 5 2026-07-14
UAL187 - 5 2026-07-02
UAL923 - 4 2026-06-20
UAL772 United Airlines 4 2026-06-06
UAL771 United Airlines 4 2026-06-05
UAL713 - 4 2026-07-12
UAL33 - 4 2026-06-15
UAL32 - 4 2026-06-14
UAL188 United Airlines 4 2026-07-02
UAL1321 United Airlines 4 2026-04-16
UAL98 United Airlines 3 2026-06-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 UAL2692 - Jul 14, 14:20 UTCJul 14, 14:45 UTC25m
2026-07-13 UAL83 - Jul 13, 19:20 UTCJul 14, 02:45 UTC7h 25m
2026-07-13 UAL83 DEL → EWR Jul 13, 18:32 UTCJul 14, 10:13 UTC15h 41m
2026-07-13 UAL82 - Jul 13, 01:55 UTCJul 13, 15:55 UTC14h 0m
2026-07-12 UAL713 SFO → EWR Jul 12, 17:50 UTCJul 12, 22:33 UTC4h 43m
2026-07-12 UAL713 SFO → EWR Jul 12, 17:45 UTCJul 12, 22:35 UTC4h 50m
2026-07-12 UAL114 PPT → SFO Jul 12, 07:30 UTCJul 12, 15:09 UTC7h 39m
2026-07-12 UAL114 - Jul 12, 07:35 UTCJul 12, 15:10 UTC7h 35m
2026-07-11 UAL115 SFO → PPT Jul 11, 20:52 UTCJul 12, 04:50 UTC7h 58m
2026-07-11 UAL115 - Jul 11, 20:50 UTCJul 12, 04:55 UTC8h 5m
2026-07-11 UAL61 MEL → SFO Jul 11, 01:09 UTCJul 11, 14:47 UTC13h 38m
2026-07-11 UAL61 - Jul 11, 01:05 UTCJul 11, 02:15 UTC1h 10m
2026-07-10 UAL60 SFO → MEL Jul 10, 07:35 UTCJul 10, 22:25 UTC14h 50m
2026-07-09 UAL28 - Jul 9, 16:15 UTCJul 10, 04:00 UTC11h 45m
2026-07-09 UAL29 - Jul 9, 10:10 UTCJul 9, 10:30 UTC20m
2026-07-08 UAL29 - Jul 8, 18:50 UTCJul 9, 07:20 UTC12h 30m
2026-07-08 UAL870 - Jul 8, 00:40 UTCJul 8, 13:15 UTC12h 35m
2026-07-07 UAL839 - Jul 7, 07:00 UTCJul 7, 22:00 UTC15h 0m
2026-07-06 UAL199 PVG → LAX Jul 6, 12:31 UTCJul 6, 23:41 UTC11h 10m
2026-07-06 UAL199 PVG → LAX Jul 6, 06:40 UTCJul 6, 23:35 UTC16h 55m
2026-07-05 UAL198 - Jul 5, 20:50 UTCJul 6, 14:55 UTC18h 5m
2026-07-05 UAL198 - Jul 5, 20:40 UTCJul 6, 08:45 UTC12h 5m
2026-07-05 UAL153 HKG → LAX Jul 5, 04:55 UTCJul 5, 17:45 UTC12h 50m
2026-07-05 UAL153 HKG → LAX Jul 5, 02:15 UTCJul 5, 02:35 UTC20m
2026-07-05 UAL153 HKG → LAX Jul 5, 00:19 UTCJul 5, 02:32 UTC2h 13m
2026-07-04 UAL152 LAX → HKG Jul 4, 14:30 UTCJul 4, 14:40 UTC10m
2026-07-03 UAL152 LAX → HKG Jul 3, 21:30 UTCJul 4, 10:05 UTC12h 35m
2026-07-03 UAL152 LAX → HKG Jul 3, 21:23 UTCJul 4, 10:58 UTC13h 35m
2026-07-03 UAL2692 - Jul 3, 15:00 UTCJul 3, 19:35 UTC4h 35m
2026-07-02 UAL187 - Jul 2, 20:05 UTCJul 3, 11:20 UTC15h 15m
2026-07-02 UAL188 EWR → JNB Jul 2, 02:20 UTCJul 2, 16:15 UTC13h 55m
2026-06-30 UAL187 - Jun 30, 20:05 UTCJul 1, 11:10 UTC15h 5m
2026-06-30 UAL188 EWR → JNB Jun 30, 03:10 UTCJun 30, 17:05 UTC13h 55m
2026-06-28 UAL1855 - Jun 28, 21:34 UTCJun 29, 02:00 UTC4h 25m
2026-06-28 UAL99 - Jun 28, 01:40 UTCJun 28, 15:29 UTC13h 50m
2026-06-27 UAL98 LAX → MEL Jun 27, 05:59 UTCJun 27, 21:38 UTC15h 39m
2026-06-27 UAL98 LAX → MEL Jun 27, 06:35 UTCJun 27, 21:40 UTC15h 5m
2026-06-26 UAL199 PVG → LAX Jun 26, 12:31 UTCJun 26, 23:03 UTC10h 32m
2026-06-26 UAL199 PVG → LAX Jun 26, 00:50 UTCJun 26, 23:15 UTC22h 25m
2026-06-25 UAL198 - Jun 25, 22:49 UTCJun 26, 22:44 UTC23h 55m
2026-06-25 UAL198 - Jun 25, 20:39 UTCJun 26, 14:39 UTC18h 0m
2026-06-25 UAL353 - Jun 25, 03:29 UTCJun 25, 08:30 UTC5h 0m
2026-06-24 UAL2480 - Jun 24, 21:19 UTCJun 25, 01:50 UTC4h 30m
2026-06-24 UAL1593 - Jun 24, 14:04 UTCJun 24, 19:20 UTC5h 15m
2026-06-24 UAL2303 - Jun 24, 06:45 UTCJun 24, 10:59 UTC4h 15m
2026-06-21 UAL935 - Jun 21, 13:09 UTCJun 21, 23:34 UTC10h 25m
2026-06-20 UAL923 - Jun 20, 22:59 UTCJun 21, 09:00 UTC10h 0m
2026-06-20 UAL153 HKG → LAX Jun 20, 06:49 UTCJun 20, 18:29 UTC11h 40m
2026-06-20 UAL153 HKG → LAX Jun 20, 03:39 UTCJun 20, 03:54 UTC15m
2026-06-19 UAL152 LAX → HKG Jun 19, 14:04 UTCJun 19, 14:15 UTC10m

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 N23983 page for operator, model, and routing details .

Mode-S A22D7B frequently asked

What is Mode-S code A22D7B?
A22D7B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N23983.
Where is Mode-S A22D7B registered?
Mode-S code A22D7B 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 A22D7B broadcasting right now?
Yes. Mode-S A22D7B is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A22D7B, octal 50426573, decimal 10,628,475.
What flights does A22D7B operate?
Mode-S A22D7B has broadcast 20 distinct callsigns, including UAL153, UAL152, UAL199, UAL123, UAL83.