Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A0EEEA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N15969 · BOEING 787-9 Dreamliner · operated by UNITED AIRLINES INC

Hex
A0EEEA
Octal
50167352
Decimal
10,546,922
Country
US
Tail
N15969
Type
B789
No current signal · last broadcast 14d ago
Flights observed
176
Distinct callsigns
20
Country
US
Last broadcast
14d ago

Last known position

Most recent position reported by Mode-S A0EEEA.

Country allocation

The ICAO 24-bit address A0EEEA 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 9 2026-06-19
UAL152 United Airlines 9 2026-06-18
UAL821 United Airlines 6 2026-06-04
UAL62 United Airlines 6 2026-05-06
UAL6 United Airlines 6 2026-05-05
UAL29 United Airlines 6 2026-06-06
UAL99 - 5 2026-06-17
UAL839 United Airlines 5 2026-06-05
UAL82 United Airlines 5 2026-06-11
UAL805 United Airlines 5 2026-05-29
UAL187 - 5 2026-06-13
UAL98 United Airlines 4 2026-06-16
UAL935 - 4 2026-06-24
UAL923 - 4 2026-06-23
UAL83 United Airlines 4 2026-06-11
UAL820 United Airlines 4 2026-06-04
UAL79 United Airlines 4 2026-04-17
UAL2096 United Airlines 4 2026-06-22
UAL188 United Airlines 4 2026-06-13
UAL1227 - 4 2026-06-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-29 UAL3881 - Jun 29, 16:25 UTCJun 30, 05:50 UTC13h 26m
2026-06-29 UAL3881 ORD → XMN Jun 29, 16:33 UTCJun 30, 07:48 UTC15h 15m
2026-06-29 UAL3910 EWR → ORD Jun 29, 01:01 UTCJun 29, 02:37 UTC1h 36m
2026-06-29 UAL3910 EWR → ORD Jun 29, 00:54 UTCJun 29, 02:50 UTC1h 55m
2026-06-28 UAL713 - Jun 28, 17:50 UTCJun 28, 22:29 UTC4h 40m
2026-06-28 UAL114 PPT → SFO Jun 28, 07:45 UTCJun 28, 15:25 UTC7h 40m
2026-06-28 UAL114 - Jun 28, 07:44 UTCJun 28, 15:29 UTC7h 45m
2026-06-28 UAL115 - Jun 28, 03:55 UTCJun 28, 04:35 UTC40m
2026-06-27 UAL115 - Jun 27, 20:49 UTCJun 27, 21:04 UTC15m
2026-06-27 UAL61 MEL → SFO Jun 27, 01:19 UTCJun 27, 15:17 UTC13h 58m
2026-06-27 UAL61 - Jun 27, 01:24 UTCJun 27, 15:14 UTC13h 50m
2026-06-26 UAL60 - Jun 26, 07:39 UTCJun 26, 22:29 UTC14h 50m
2026-06-25 UAL1227 - Jun 25, 18:29 UTCJun 25, 23:55 UTC5h 25m
2026-06-25 UAL2303 - Jun 25, 06:50 UTCJun 25, 11:10 UTC4h 20m
2026-06-24 UAL935 - Jun 24, 12:30 UTCJun 24, 22:55 UTC10h 25m
2026-06-23 UAL923 - Jun 23, 22:49 UTCJun 24, 08:55 UTC10h 5m
2026-06-23 UAL353 EWR → LAX Jun 23, 02:47 UTCJun 23, 08:22 UTC5h 35m
2026-06-23 UAL353 - Jun 23, 03:25 UTCJun 23, 08:30 UTC5h 5m
2026-06-22 UAL2096 LAX → EWR Jun 22, 20:30 UTCJun 23, 00:50 UTC4h 20m
2026-06-22 UAL772 PEK → LAX Jun 22, 04:29 UTCJun 22, 15:47 UTC11h 18m
2026-06-22 UAL772 PEK → LAX Jun 22, 04:29 UTCJun 22, 15:37 UTC11h 8m
2026-06-21 UAL771 - Jun 21, 06:44 UTCJun 21, 19:00 UTC12h 15m
2026-06-20 UAL935 - Jun 20, 12:30 UTCJun 20, 22:30 UTC10h 0m
2026-06-20 UAL935 LHR → LAX Jun 20, 12:30 UTCJun 20, 22:41 UTC10h 11m
2026-06-19 UAL923 - Jun 19, 23:00 UTCJun 20, 02:04 UTC3h 5m
2026-06-19 UAL923 LAX → LHR Jun 19, 22:53 UTCJun 20, 08:46 UTC9h 53m
2026-06-19 UAL153 HKG → LAX Jun 19, 05:09 UTCJun 19, 18:05 UTC12h 55m
2026-06-19 UAL153 HKG → LAX Jun 19, 02:09 UTCJun 19, 02:24 UTC15m
2026-06-18 UAL152 LAX → HKG Jun 18, 16:00 UTCJun 18, 16:15 UTC15m
2026-06-17 UAL152 LAX → HKG Jun 17, 23:15 UTCJun 18, 13:55 UTC14h 40m
2026-06-17 UAL99 - Jun 17, 00:20 UTCJun 17, 13:55 UTC13h 35m
2026-06-16 UAL98 LAX → MEL Jun 16, 06:10 UTCJun 16, 21:30 UTC15h 21m
2026-06-15 UAL353 - Jun 15, 02:35 UTCJun 15, 08:10 UTC5h 35m
2026-06-13 UAL187 - Jun 13, 20:10 UTCJun 14, 11:50 UTC15h 40m
2026-06-13 UAL188 EWR → JNB Jun 13, 03:00 UTCJun 13, 16:50 UTC13h 49m
2026-06-13 UAL188 EWR → JNB Jun 13, 02:59 UTCJun 13, 16:46 UTC13h 47m
2026-06-11 UAL83 DEL → EWR Jun 11, 18:50 UTCJun 12, 03:55 UTC9h 6m
2026-06-11 UAL83 DEL → EWR Jun 11, 18:32 UTCJun 12, 10:04 UTC15h 32m
2026-06-11 UAL82 EWR → DEL Jun 11, 01:44 UTCJun 11, 15:26 UTC13h 42m
2026-06-11 UAL82 EWR → DEL Jun 11, 01:40 UTCJun 11, 11:40 UTC10h 0m
2026-06-10 UAL713 ORD → DEL Jun 10, 18:10 UTCJun 10, 23:00 UTC4h 50m
2026-06-10 UAL870 SYD → SFO Jun 10, 00:40 UTCJun 10, 13:45 UTC13h 5m
2026-06-09 UAL863 SFO → SYD Jun 9, 06:56 UTCJun 9, 21:04 UTC14h 8m
2026-06-09 UAL863 SFO → SYD Jun 9, 07:00 UTCJun 9, 07:25 UTC25m
2026-06-08 UAL28D SIN → SFO Jun 8, 05:20 UTCJun 8, 18:05 UTC12h 45m
2026-06-08 UAL28D SIN → SFO Jun 8, 04:01 UTCJun 8, 18:01 UTC14h 0m
2026-06-06 UAL29 SFO → SIN Jun 6, 19:19 UTCJun 7, 09:20 UTC14h 0m
2026-06-06 UAL29 SFO → SIN Jun 6, 19:00 UTCJun 7, 11:05 UTC16h 5m
2026-06-06 UAL870 SYD → SFO Jun 6, 00:45 UTCJun 6, 13:30 UTC12h 45m
2026-06-06 UAL870 SYD → SFO Jun 6, 00:35 UTCJun 6, 01:45 UTC1h 10m

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 N15969 page for operator, model, and routing details .

Mode-S A0EEEA frequently asked

What is Mode-S code A0EEEA?
A0EEEA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N15969.
Where is Mode-S A0EEEA registered?
Mode-S code A0EEEA 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 A0EEEA broadcasting right now?
No active broadcast right now. Last signal was 14d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0EEEA, octal 50167352, decimal 10,546,922.
What flights does A0EEEA operate?
Mode-S A0EEEA has broadcast 20 distinct callsigns, including UAL153, UAL152, UAL821, UAL62, UAL6.