Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A8F00E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N675UA · BOEING 767-300 · operated by UNITED AIRLINES INC

Hex
A8F00E
Octal
52170016
Decimal
11,071,502
Country
US
Tail
N675UA
Type
B763
No current signal · last broadcast 4h ago
Flights observed
183
Distinct callsigns
20
Country
US
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S A8F00E.

Country allocation

The ICAO 24-bit address A8F00E 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
UAL957 - 10 2026-07-13
UAL928 United Airlines 10 2026-07-09
UAL146 - 10 2026-07-11
UAL134 United Airlines 10 2026-06-05
UAL12 - 10 2026-06-24
UAL959 - 9 2026-07-02
UAL920 United Airlines 9 2026-07-02
UAL956 - 8 2026-07-13
UAL941 - 8 2026-07-10
UAL934 United Airlines 8 2026-07-04
UAL135 United Airlines 7 2026-06-03
UAL938 - 6 2026-07-10
UAL963 - 5 2026-07-12
UAL929 - 5 2026-07-02
UAL921 - 5 2026-06-18
UAL3 United Airlines 5 2026-06-23
UAL272 United Airlines 5 2026-05-18
UAL17 - 5 2026-07-03
UAL147 - 5 2026-07-11
UAL962 - 4 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 UAL16 - Jul 13, 22:10 UTCJul 14, 04:40 UTC6h 30m
2026-07-13 UAL957 GVA → EWR Jul 13, 09:42 UTCJul 13, 17:33 UTC7h 51m
2026-07-13 UAL957 GVA → EWR Jul 13, 09:42 UTCJul 13, 17:43 UTC8h 1m
2026-07-13 UAL956 EWR → GVA Jul 13, 00:10 UTCJul 13, 07:30 UTC7h 20m
2026-07-12 UAL963 - Jul 12, 07:55 UTCJul 12, 16:05 UTC8h 10m
2026-07-12 UAL963 BER → EWR Jul 12, 08:01 UTCJul 12, 16:02 UTC8h 1m
2026-07-11 UAL962 EWR → BER Jul 11, 21:43 UTCJul 12, 04:51 UTC7h 8m
2026-07-11 UAL962 - Jul 11, 21:50 UTCJul 12, 03:30 UTC5h 40m
2026-07-11 UAL147 LHR → EWR Jul 11, 11:25 UTCJul 11, 19:06 UTC7h 41m
2026-07-11 UAL147 - Jul 11, 11:35 UTCJul 11, 13:05 UTC1h 30m
2026-07-11 UAL146 EWR → LHR Jul 11, 02:40 UTCJul 11, 09:05 UTC6h 25m
2026-07-10 UAL941 LHR → EWR Jul 10, 15:35 UTCJul 10, 23:10 UTC7h 36m
2026-07-10 UAL941 LHR → EWR Jul 10, 15:34 UTCJul 10, 23:12 UTC7h 38m
2026-07-10 UAL938 ORD → LHR Jul 10, 04:30 UTCJul 10, 11:45 UTC7h 15m
2026-07-09 UAL928 LHR → ORD Jul 9, 13:35 UTCJul 9, 14:45 UTC1h 10m
2026-07-09 UAL928 LHR → ORD Jul 9, 13:34 UTCJul 9, 21:44 UTC8h 10m
2026-07-09 UAL938 ORD → LHR Jul 9, 03:00 UTCJul 9, 10:40 UTC7h 40m
2026-07-08 UAL928 LHR → ORD Jul 8, 13:30 UTCJul 8, 21:40 UTC8h 10m
2026-07-08 UAL146 EWR → LHR Jul 8, 04:25 UTCJul 8, 11:05 UTC6h 40m
2026-07-07 UAL3940 - Jul 7, 17:40 UTCJul 8, 00:40 UTC7h 0m
2026-07-07 UAL3940 LHR → EWR Jul 7, 17:40 UTCJul 8, 00:40 UTC7h 0m
2026-07-06 UAL938 ORD → LHR Jul 6, 03:15 UTCJul 6, 10:45 UTC7h 30m
2026-07-06 UAL938 ORD → LHR Jul 6, 03:13 UTCJul 6, 10:35 UTC7h 22m
2026-07-05 UAL958 - Jul 5, 07:25 UTCJul 5, 15:45 UTC8h 20m
2026-07-04 UAL934 EWR → LHR Jul 4, 12:35 UTCJul 4, 18:45 UTC6h 10m
2026-07-03 UAL17 - Jul 3, 09:45 UTCJul 3, 17:25 UTC7h 40m
2026-07-02 UAL929 - Jul 2, 22:25 UTCJul 3, 05:35 UTC7h 10m
2026-07-02 UAL959 - Jul 2, 10:10 UTCJul 2, 18:40 UTC8h 30m
2026-07-02 UAL920 ORD → LHR Jul 2, 00:40 UTCJul 2, 07:40 UTC7h 0m
2026-07-01 UAL959 - Jul 1, 10:50 UTCJul 1, 19:10 UTC8h 20m
2026-07-01 UAL940 - Jul 1, 01:25 UTCJul 1, 08:15 UTC6h 50m
2026-06-30 UAL941 - Jun 30, 15:25 UTCJun 30, 22:40 UTC7h 15m
2026-06-30 UAL920 ORD → LHR Jun 30, 01:00 UTCJun 30, 08:15 UTC7h 16m
2026-06-29 UAL928 LHR → ORD Jun 29, 13:34 UTCJun 29, 21:44 UTC8h 10m
2026-06-29 UAL938 ORD → LHR Jun 29, 03:44 UTCJun 29, 11:20 UTC7h 35m
2026-06-28 UAL928 LHR → ORD Jun 28, 13:25 UTCJun 28, 21:24 UTC8h 0m
2026-06-28 UAL928 LHR → ORD Jun 28, 13:34 UTCJun 28, 21:06 UTC7h 32m
2026-06-28 UAL938 ORD → LHR Jun 28, 03:14 UTCJun 28, 10:44 UTC7h 30m
2026-06-27 UAL928 LHR → ORD Jun 27, 21:25 UTCJun 27, 21:29 UTC5m
2026-06-27 UAL928 LHR → ORD Jun 27, 13:40 UTCJun 27, 14:49 UTC1h 10m
2026-06-27 UAL928 LHR → ORD Jun 27, 13:34 UTCJun 27, 21:06 UTC7h 32m
2026-06-27 UAL928 LHR → ORD Jun 27, 13:34 UTCJun 27, 21:09 UTC7h 35m
2026-06-27 UAL146 EWR → LHR Jun 27, 02:45 UTCJun 27, 09:44 UTC7h 0m
2026-06-26 UAL941 - Jun 26, 15:34 UTCJun 26, 22:55 UTC7h 20m
2026-06-26 UAL920 ORD → LHR Jun 26, 00:07 UTCJun 26, 07:33 UTC7h 26m
2026-06-26 UAL920 ORD → LHR Jun 26, 00:10 UTCJun 26, 07:30 UTC7h 20m
2026-06-24 UAL12 ZRH → ORD Jun 24, 08:19 UTCJun 24, 17:14 UTC8h 55m
2026-06-24 UAL12 ZRH → BLK Jun 24, 07:59 UTCJun 24, 09:29 UTC1h 30m
2026-06-23 UAL3 LAX → HNL Jun 23, 21:32 UTCJun 24, 05:15 UTC7h 43m
2026-06-23 UAL3 LAX → HNL Jun 23, 21:10 UTCJun 24, 05:20 UTC8h 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 N675UA page for operator, model, and routing details .

Mode-S A8F00E frequently asked

What is Mode-S code A8F00E?
A8F00E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N675UA.
Where is Mode-S A8F00E registered?
Mode-S code A8F00E 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 A8F00E broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A8F00E, octal 52170016, decimal 11,071,502.
What flights does A8F00E operate?
Mode-S A8F00E has broadcast 20 distinct callsigns, including UAL957, UAL928, UAL146, UAL134, UAL12.