Apparatus

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sensors Mode-S transponder

AA9D6E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N783UA · BOEING 777-200 · operated by UNITED AIRLINES INC

Hex
AA9D6E
Octal
52516556
Decimal
11,181,422
Country
US
Tail
N783UA
Type
B772
Broadcasting now · callsign UAL507 · 32,825 ft
Flights observed
215
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Current position

AA9D6E is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AA9D6E 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
UAL818 - 11 2026-07-05
UAL926 United Airlines 10 2026-05-20
UAL927 United Airlines 8 2026-05-20
UAL885 United Airlines 8 2026-06-14
UAL884 - 8 2026-06-13
UAL819 - 8 2026-07-04
UAL160 - 8 2026-07-03
UAL942 United Airlines 7 2026-06-11
UAL914 United Airlines 7 2026-06-26
UAL852 - 7 2026-06-21
UAL943 United Airlines 6 2026-06-11
UAL194 - 6 2026-07-02
UAL880 United Airlines 5 2026-07-05
UAL853 - 5 2026-06-20
UAL102 - 5 2026-07-09
UAL990 - 4 2026-06-25
UAL969 United Airlines 4 2026-05-28
UAL968 United Airlines 4 2026-05-27
UAL924 - 4 2026-06-16
UAL876 - 4 2026-07-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 UAL507 - Jul 14, 00:30 UTCJul 14, 09:30 UTC9h 0m
2026-07-13 UAL1593 - Jul 13, 14:25 UTCJul 13, 19:15 UTC4h 50m
2026-07-12 UAL43 FRA → EWR Jul 12, 14:05 UTCJul 12, 21:45 UTC7h 40m
2026-07-12 UAL3034 EWR → FRA Jul 12, 04:54 UTCJul 12, 11:54 UTC7h 0m
2026-07-12 UAL3034 - Jul 12, 04:55 UTCJul 12, 05:30 UTC35m
2026-07-11 UAL366 SFO → EWR Jul 11, 21:17 UTCJul 12, 02:22 UTC5h 5m
2026-07-11 UAL366 SFO → EWR Jul 11, 21:20 UTCJul 12, 02:25 UTC5h 5m
2026-07-11 UAL1336 - Jul 11, 13:50 UTCJul 11, 19:00 UTC5h 10m
2026-07-10 UAL366 SFO → EWR Jul 10, 23:00 UTCJul 11, 03:35 UTC4h 35m
2026-07-09 UAL195 - Jul 9, 10:30 UTCJul 9, 21:40 UTC11h 10m
2026-07-09 UAL102 - Jul 9, 08:15 UTCJul 9, 08:20 UTC5m
2026-07-08 UAL102 - Jul 8, 22:30 UTCJul 9, 07:30 UTC9h 0m
2026-07-08 UAL102 IAH → MUC Jul 8, 22:32 UTCJul 9, 07:56 UTC9h 24m
2026-07-08 UAL879 - Jul 8, 09:30 UTCJul 8, 18:55 UTC9h 25m
2026-07-07 UAL918 IAD → LHR Jul 7, 23:11 UTCJul 8, 05:57 UTC6h 46m
2026-07-07 UAL918 - Jul 7, 23:10 UTCJul 8, 01:10 UTC2h 0m
2026-07-07 UAL919 - Jul 7, 11:40 UTCJul 7, 18:50 UTC7h 10m
2026-07-05 UAL880 IAH → LHR Jul 5, 21:55 UTCJul 6, 06:35 UTC8h 40m
2026-07-05 UAL818 - Jul 5, 00:15 UTCJul 5, 01:30 UTC1h 15m
2026-07-05 UAL818 EZE → IAH Jul 5, 00:16 UTCJul 5, 10:05 UTC9h 49m
2026-07-04 UAL819 - Jul 4, 02:10 UTCJul 4, 07:30 UTC5h 20m
2026-07-04 UAL819 IAH → EZE Jul 4, 02:06 UTCJul 4, 10:54 UTC8h 48m
2026-07-03 UAL160 - Jul 3, 10:50 UTCJul 3, 21:40 UTC10h 50m
2026-07-03 UAL160 MUC → IAH Jul 3, 10:39 UTCJul 3, 21:36 UTC10h 57m
2026-07-02 UAL194 - Jul 2, 22:35 UTCJul 3, 08:35 UTC10h 0m
2026-07-02 UAL1593 EWR → SFO Jul 2, 13:49 UTCJul 2, 19:00 UTC5h 11m
2026-07-02 UAL1593 - Jul 2, 13:45 UTCJul 2, 19:05 UTC5h 20m
2026-07-01 UAL1333 SFO → EWR Jul 1, 21:15 UTCJul 2, 01:50 UTC4h 35m
2026-07-01 UAL876 HND → SFO Jul 1, 07:15 UTCJul 1, 16:02 UTC8h 47m
2026-07-01 UAL876 HND → SFO Jul 1, 07:15 UTCJul 1, 16:00 UTC8h 45m
2026-07-01 UAL876 - Jul 1, 07:15 UTCJul 1, 16:05 UTC8h 50m
2026-06-30 UAL131 EWR → HND Jun 30, 14:53 UTCJul 1, 03:59 UTC13h 6m
2026-06-30 UAL131 - Jun 30, 15:00 UTCJun 30, 22:00 UTC7h 0m
2026-06-29 UAL22 DUB → EWR Jun 29, 08:50 UTCJun 29, 15:14 UTC6h 25m
2026-06-29 UAL23 - Jun 29, 00:29 UTCJun 29, 06:14 UTC5h 45m
2026-06-28 UAL121 BCN → EWR Jun 28, 10:24 UTCJun 28, 18:34 UTC8h 10m
2026-06-27 UAL120 EWR → BCN Jun 27, 23:50 UTCJun 28, 06:30 UTC6h 40m
2026-06-27 UAL56 CDG → EWR Jun 27, 08:14 UTCJun 27, 10:00 UTC1h 45m
2026-06-27 UAL56 CDG → EWR Jun 27, 08:09 UTCJun 27, 15:38 UTC7h 29m
2026-06-27 UAL56 CDG → EWR Jun 27, 08:09 UTCJun 27, 15:34 UTC7h 25m
2026-06-26 UAL915 IAD → CDG Jun 26, 23:00 UTCJun 27, 05:35 UTC6h 35m
2026-06-26 UAL914 CDG → IAD Jun 26, 11:49 UTCJun 26, 19:45 UTC7h 55m
2026-06-26 UAL914 CDG → IAD Jun 26, 11:54 UTCJun 26, 19:49 UTC7h 55m
2026-06-25 UAL990 SFO → CDG Jun 25, 22:08 UTCJun 26, 08:23 UTC10h 15m
2026-06-25 UAL990 - Jun 25, 22:14 UTCJun 25, 23:30 UTC1h 15m
2026-06-24 UAL876 HND → SFO Jun 24, 07:24 UTCJun 24, 16:24 UTC9h 0m
2026-06-23 UAL875 SFO → HND Jun 23, 18:55 UTCJun 24, 05:05 UTC10h 10m
2026-06-22 UAL59 - Jun 22, 11:14 UTCJun 22, 12:54 UTC1h 40m
2026-06-22 UAL59 FRA → SFO Jun 22, 11:14 UTCJun 22, 22:01 UTC10h 47m
2026-06-21 UAL58 SFO → FRA Jun 21, 21:14 UTCJun 22, 07:14 UTC10h 0m

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 N783UA page for operator, model, and routing details .

Mode-S AA9D6E frequently asked

What is Mode-S code AA9D6E?
AA9D6E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N783UA.
Where is Mode-S AA9D6E registered?
Mode-S code AA9D6E 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 AA9D6E broadcasting right now?
Yes. Mode-S AA9D6E is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA9D6E, octal 52516556, decimal 11,181,422.
What flights does AA9D6E operate?
Mode-S AA9D6E has broadcast 20 distinct callsigns, including UAL818, UAL926, UAL927, UAL885, UAL884.