Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A0817C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N13110 · operated by UNITED AIRLINES INC

Hex
A0817C
Octal
50100574
Decimal
10,518,908
Country
US
Tail
N13110
Type
B752
No current signal · last broadcast Jul 26, 23:00 UTC
Flights observed
297
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 23:00 UTC

Last known position

Most recent position reported by Mode-S A0817C.

Country allocation

The ICAO 24-bit address A0817C 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
UAL119 - 14 2026-07-20
UAL118 - 13 2026-07-20
UAL228 - 12 2026-06-21
UAL144 United Airlines 10 2026-07-23
UAL912 - 9 2026-07-17
UAL2445 - 9 2026-06-18
UAL145 United Airlines 9 2026-07-23
UAL229 - 8 2026-06-21
UAL1095 - 7 2026-06-29
UAL2227 United Airlines 6 2026-07-25
UAL978 - 5 2026-07-16
UAL913 - 5 2026-06-26
UAL661 United Airlines 5 2026-06-25
UAL399 - 5 2026-07-15
UAL289 - 5 2026-06-27
UAL288 - 5 2026-07-07
UAL274 United Airlines 5 2026-07-22
UAL271 United Airlines 5 2026-07-26
UAL239 United Airlines 5 2026-07-24
UAL2191 United Airlines 5 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UAL2080 ORD → SFO Jul 26, 20:20 UTCJul 26, 23:00 UTC2h 40m
2026-07-26 UAL271 ATL → EWR Jul 26, 11:35 UTCJul 26, 18:25 UTC6h 50m
2026-07-26 UAL270 EUG → SFO Jul 26, 03:15 UTCJul 26, 08:50 UTC5h 36m
2026-07-25 UAL2227 MFR → SFO Jul 25, 19:30 UTCJul 26, 00:20 UTC4h 50m
2026-07-25 UAL2227 MFR → SFO Jul 25, 19:33 UTCJul 26, 00:15 UTC4h 42m
2026-07-24 UAL2191 EUG → SFO Jul 24, 18:35 UTCJul 24, 23:55 UTC5h 20m
2026-07-24 UAL239 ORD → BNA Jul 24, 08:25 UTCJul 24, 15:01 UTC6h 36m
2026-07-24 UAL239 ORD → BNA Jul 24, 08:10 UTCJul 24, 15:00 UTC6h 50m
2026-07-23 UAL238 CLE → ORD Jul 23, 23:35 UTCJul 24, 05:55 UTC6h 20m
2026-07-23 UAL145 OPO → EWR Jul 23, 12:10 UTCJul 23, 19:15 UTC7h 5m
2026-07-23 UAL144 EWR → OPO Jul 23, 02:20 UTCJul 23, 08:35 UTC6h 15m
2026-07-23 UAL144 EWR → OPO Jul 23, 02:05 UTCJul 23, 08:32 UTC6h 27m
2026-07-22 UAL274 RDU → EWR Jul 22, 19:00 UTCJul 22, 23:45 UTC4h 45m
2026-07-21 UAL1340 FLL → EWR Jul 21, 22:30 UTCJul 22, 05:20 UTC6h 50m
2026-07-21 UAL1340 FLL → EWR Jul 21, 23:25 UTCJul 22, 05:25 UTC6h 0m
2026-07-21 UAL145 OPO → EWR Jul 21, 11:55 UTCJul 21, 19:00 UTC7h 5m
2026-07-21 UAL144 EWR → OPO Jul 21, 02:35 UTCJul 21, 09:05 UTC6h 30m
2026-07-20 UAL2171 GRR → DEN Jul 20, 22:51 UTCJul 21, 00:17 UTC1h 26m
2026-07-20 UAL2171 GRR → DEN Jul 20, 22:45 UTCJul 21, 00:20 UTC1h 34m
2026-07-20 UAL119 - Jul 20, 10:45 UTCJul 20, 18:30 UTC7h 45m
2026-07-20 UAL118 ORD → EDI Jul 20, 01:05 UTCJul 20, 08:10 UTC7h 5m
2026-07-19 UAL119 EDI → ORD Jul 19, 10:50 UTCJul 19, 18:35 UTC7h 45m
2026-07-19 UAL118 ORD → EDI Jul 19, 00:22 UTCJul 19, 07:12 UTC6h 50m
2026-07-19 UAL118 ORD → EDI Jul 19, 00:20 UTCJul 19, 07:15 UTC6h 55m
2026-07-18 UAL119 - Jul 18, 10:45 UTCJul 18, 18:40 UTC7h 55m
2026-07-18 UAL118 ORD → EDI Jul 18, 00:52 UTCJul 18, 08:16 UTC7h 24m
2026-07-18 UAL118 - Jul 18, 00:55 UTCJul 18, 03:20 UTC2h 26m
2026-07-17 UAL2788 EWR → ORD Jul 17, 20:44 UTCJul 17, 22:35 UTC1h 50m
2026-07-17 UAL139 KEF → EWR Jul 17, 11:10 UTCJul 17, 16:44 UTC5h 35m
2026-07-17 UAL139 KEF → EWR Jul 17, 11:19 UTCJul 17, 16:42 UTC5h 23m
2026-07-17 UAL912 - Jul 17, 03:39 UTCJul 17, 04:59 UTC1h 20m
2026-07-17 UAL912 ORD → KEF Jul 17, 03:21 UTCJul 17, 09:14 UTC5h 53m
2026-07-16 UAL119 - Jul 16, 16:00 UTCJul 16, 23:35 UTC7h 35m
2026-07-16 UAL119 EDI → ORD Jul 16, 15:58 UTCJul 16, 23:20 UTC7h 22m
2026-07-16 UAL978 IAD → EDI Jul 16, 03:25 UTCJul 16, 10:04 UTC6h 40m
2026-07-16 UAL978 IAD → EDI Jul 16, 03:30 UTCJul 16, 09:59 UTC6h 29m
2026-07-15 UAL399 KEF → IAD Jul 15, 11:49 UTCJul 15, 17:30 UTC5h 41m
2026-07-15 UAL399 KEF → IAD Jul 15, 11:35 UTCJul 15, 17:35 UTC6h 0m
2026-07-15 UAL138 EWR → KEF Jul 15, 01:45 UTCJul 15, 06:37 UTC4h 52m
2026-07-15 UAL138 - Jul 15, 01:40 UTCJul 15, 06:40 UTC5h 0m
2026-07-14 UAL2759 ORD → EWR Jul 14, 21:20 UTCJul 14, 22:55 UTC1h 34m
2026-07-14 UAL119 EDI → ORD Jul 14, 10:40 UTCJul 14, 18:20 UTC7h 40m
2026-07-14 UAL118 ORD → EDI Jul 14, 00:10 UTCJul 14, 07:30 UTC7h 20m
2026-07-13 UAL119 EDI → ORD Jul 13, 10:50 UTCJul 13, 18:40 UTC7h 50m
2026-07-13 UAL118 ORD → EDI Jul 13, 00:15 UTCJul 13, 07:35 UTC7h 20m
2026-07-11 UAL119 EDI → ORD Jul 11, 11:05 UTCJul 11, 18:55 UTC7h 50m
2026-07-11 UAL118 ORD → EDI Jul 11, 00:20 UTCJul 11, 07:25 UTC7h 5m
2026-07-10 UAL119 - Jul 10, 19:35 UTCJul 10, 19:55 UTC20m
2026-07-10 UAL119 - Jul 10, 11:35 UTCJul 10, 19:55 UTC8h 20m
2026-07-10 UAL119 EDI → ORD Jul 10, 11:38 UTCJul 10, 19:18 UTC7h 40m

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 N13110 page for operator, model, and routing details .

Mode-S A0817C frequently asked

What is Mode-S code A0817C?
A0817C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N13110.
Where is Mode-S A0817C registered?
Mode-S code A0817C 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 A0817C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 23:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0817C, octal 50100574, decimal 10,518,908.
What flights does A0817C operate?
Mode-S A0817C has broadcast 20 distinct callsigns, including UAL119, UAL118, UAL228, UAL144, UAL912.