Apparatus

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sensors Mode-S transponder

A11BA0

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N17002 · BOEING 787-10 Dreamliner · operated by UNITED AIRLINES INC

Hex
A11BA0
Octal
50215640
Decimal
10,558,368
Country
US
Tail
N17002
Type
B78X
No current signal · last broadcast Jul 26, 22:00 UTC
Flights observed
268
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:00 UTC

Last known position

Most recent position reported by Mode-S A11BA0.

Country allocation

The ICAO 24-bit address A11BA0 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
UAL64 United Airlines 16 2026-07-20
UAL995 United Airlines 13 2026-07-19
UAL906 - 13 2026-06-16
UAL987 - 12 2026-06-18
UAL986 - 12 2026-06-18
UAL907 United Airlines 12 2026-06-16
UAL423 - 12 2026-07-12
UAL2303 - 12 2026-07-18
UAL973 - 11 2026-07-21
UAL65 - 11 2026-07-20
UAL38 - 11 2026-07-16
UAL994 - 10 2026-07-20
UAL945 United Airlines 10 2026-07-22
UAL972 United Airlines 9 2026-06-03
UAL39 - 9 2026-06-30
UAL971 - 8 2026-07-11
UAL422 - 8 2026-07-11
UAL970 - 7 2026-07-10
UAL882 - 7 2026-06-15
UAL845 United Airlines 7 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UAL415 DEN → LGA Jul 26, 14:25 UTCJul 26, 22:00 UTC7h 35m
2026-07-26 UAL416 ORD → MXP Jul 26, 03:45 UTCJul 26, 11:35 UTC7h 51m
2026-07-24 UAL844 GRU → ORD Jul 24, 01:50 UTCJul 24, 11:40 UTC9h 50m
2026-07-23 UAL845 ORD → GRU Jul 23, 03:40 UTCJul 23, 08:50 UTC5h 10m
2026-07-23 UAL845 ORD → GRU Jul 23, 03:33 UTCJul 23, 13:02 UTC9h 29m
2026-07-22 UAL945 FRA → ORD Jul 22, 15:05 UTCJul 22, 16:20 UTC1h 15m
2026-07-22 UAL945 FRA → ORD Jul 22, 07:18 UTCJul 22, 16:11 UTC8h 53m
2026-07-21 UAL944 ORD → FRA Jul 21, 20:45 UTCJul 22, 04:10 UTC7h 25m
2026-07-21 UAL973 BRU → ORD Jul 21, 08:25 UTCJul 21, 16:35 UTC8h 10m
2026-07-20 UAL994 - Jul 20, 23:05 UTCJul 21, 05:35 UTC6h 29m
2026-07-20 UAL65 LIS → EWR Jul 20, 10:15 UTCJul 20, 17:20 UTC7h 5m
2026-07-20 UAL64 EWR → LIS Jul 20, 01:50 UTCJul 20, 08:00 UTC6h 10m
2026-07-19 UAL995 BRU → EWR Jul 19, 13:44 UTCJul 19, 21:13 UTC7h 29m
2026-07-19 UAL995 BRU → EWR Jul 19, 13:50 UTCJul 19, 21:20 UTC7h 30m
2026-07-19 UAL994 - Jul 19, 05:05 UTCJul 19, 11:45 UTC6h 40m
2026-07-18 UAL2303 - Jul 18, 06:50 UTCJul 18, 11:25 UTC4h 35m
2026-07-18 UAL2303 LAX → EWR Jul 18, 06:34 UTCJul 18, 11:25 UTC4h 51m
2026-07-17 UAL212 DEN → SBA Jul 17, 16:19 UTCJul 17, 21:05 UTC4h 45m
2026-07-17 UAL2303 - Jul 17, 06:50 UTCJul 17, 11:25 UTC4h 35m
2026-07-16 UAL38 HND → LAX Jul 16, 09:35 UTCJul 16, 19:40 UTC10h 5m
2026-07-16 UAL38 - Jul 16, 09:35 UTCJul 16, 19:40 UTC10h 5m
2026-07-15 UAL881 - Jul 15, 17:35 UTCJul 16, 05:15 UTC11h 40m
2026-07-12 UAL423 ATH → ORD Jul 12, 10:05 UTCJul 12, 20:40 UTC10h 35m
2026-07-11 UAL422 - Jul 11, 21:55 UTCJul 12, 07:35 UTC9h 40m
2026-07-11 UAL971 - Jul 11, 08:20 UTCJul 11, 17:30 UTC9h 10m
2026-07-10 UAL970 - Jul 10, 21:15 UTCJul 10, 23:35 UTC2h 20m
2026-07-10 UAL970 ORD → FCO Jul 10, 21:22 UTCJul 11, 05:34 UTC8h 12m
2026-07-10 UAL945 - Jul 10, 07:10 UTCJul 10, 09:00 UTC1h 50m
2026-07-10 UAL945 FRA → ORD Jul 10, 07:08 UTCJul 10, 15:40 UTC8h 32m
2026-07-10 UAL945 FRA → ORD Jul 10, 07:08 UTCJul 10, 15:27 UTC8h 19m
2026-07-09 UAL944 - Jul 9, 20:30 UTCJul 10, 03:55 UTC7h 25m
2026-07-08 UAL423 ATH → ORD Jul 8, 10:05 UTCJul 8, 21:00 UTC10h 55m
2026-07-07 UAL422 - Jul 7, 22:00 UTCJul 8, 07:25 UTC9h 25m
2026-07-07 UAL973 BRU → ORD Jul 7, 08:31 UTCJul 7, 16:28 UTC7h 57m
2026-07-07 UAL973 BRU → ORD Jul 7, 08:35 UTCJul 7, 16:40 UTC8h 5m
2026-07-06 UAL994 PBI → ORD Jul 6, 23:45 UTCJul 7, 06:00 UTC6h 15m
2026-07-06 UAL65 - Jul 6, 11:30 UTCJul 6, 18:15 UTC6h 45m
2026-07-06 UAL64 EWR → LIS Jul 6, 01:58 UTCJul 6, 09:00 UTC7h 2m
2026-07-06 UAL64 - Jul 6, 03:05 UTCJul 6, 09:05 UTC6h 0m
2026-07-05 UAL1981 DEN → LGA Jul 5, 19:00 UTCJul 5, 23:35 UTC4h 35m
2026-07-05 UAL2445 - Jul 5, 11:25 UTCJul 5, 16:15 UTC4h 50m
2026-07-05 UAL2397 LAX → EWR Jul 5, 04:25 UTCJul 5, 09:25 UTC5h 0m
2026-07-04 UAL212 EWR → LAX Jul 4, 17:10 UTCJul 4, 22:05 UTC4h 55m
2026-07-03 UAL125 ATH → EWR Jul 3, 07:45 UTCJul 3, 17:40 UTC9h 55m
2026-07-02 UAL124 EWR → ATH Jul 2, 20:15 UTCJul 3, 04:45 UTC8h 30m
2026-07-02 UAL2303 - Jul 2, 06:41 UTCJul 2, 11:10 UTC4h 29m
2026-07-02 UAL2303 LAX → EWR Jul 2, 06:34 UTCJul 2, 11:11 UTC4h 37m
2026-07-01 UAL212 EWR → LAX Jul 1, 16:25 UTCJul 1, 21:20 UTC4h 55m
2026-07-01 UAL2303 - Jul 1, 06:35 UTCJul 1, 10:55 UTC4h 20m
2026-07-01 UAL2303 LAX → EWR Jul 1, 06:34 UTCJul 1, 10:54 UTC4h 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 N17002 page for operator, model, and routing details .

Mode-S A11BA0 frequently asked

What is Mode-S code A11BA0?
A11BA0 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N17002.
Where is Mode-S A11BA0 registered?
Mode-S code A11BA0 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 A11BA0 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A11BA0, octal 50215640, decimal 10,558,368.
What flights does A11BA0 operate?
Mode-S A11BA0 has broadcast 20 distinct callsigns, including UAL64, UAL995, UAL906, UAL987, UAL986.