Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A47809

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N38727 · BOEING 737-700 · operated by UNITED AIRLINES INC

Hex
A47809
Octal
51074011
Decimal
10,778,633
Country
US
Tail
N38727
Type
B737
No current signal · last broadcast Jul 26, 20:45 UTC
Flights observed
451
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:45 UTC

Last known position

Most recent position reported by Mode-S A47809.

Country allocation

The ICAO 24-bit address A47809 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
UAL1559 United Airlines 9 2026-07-24
UAL1513 - 9 2026-07-16
UAL2726 United Airlines 7 2026-06-24
UAL1861 - 7 2026-07-03
UAL1853 - 7 2026-07-01
UAL1852 - 7 2026-07-01
UAL1478 - 7 2026-06-19
UAL1304 United Airlines 7 2026-07-24
UAL2468 United Airlines 6 2026-07-26
UAL241 - 6 2026-06-18
UAL1200 - 6 2026-06-27
UAL2430 United Airlines 5 2026-04-18
UAL2346 United Airlines 5 2026-06-26
UAL1860 - 5 2026-07-03
UAL1611 United Airlines 5 2026-07-25
UAL1499 United Airlines 5 2026-07-20
UAL1477 United Airlines 5 2026-04-19
UAL1418 United Airlines 5 2026-07-18
UAL1201 - 5 2026-06-27
UAL744 United Airlines 4 2026-04-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UAL2174 IAD → BDL Jul 26, 18:45 UTCJul 26, 20:35 UTC1h 50m
2026-07-26 UAL1616 BNA → ORD Jul 26, 15:45 UTCJul 26, 17:25 UTC1h 40m
2026-07-26 UAL2468 TPA → EWR Jul 26, 13:10 UTCJul 26, 14:10 UTC1h 0m
2026-07-26 UAL2468 TPA → EWR Jul 26, 13:04 UTCJul 26, 14:08 UTC1h 4m
2026-07-25 UAL1611 LAX → SFO Jul 25, 22:50 UTCJul 25, 23:50 UTC1h 0m
2026-07-25 UAL1900 COS → DEN Jul 25, 14:40 UTCJul 25, 19:10 UTC4h 30m
2026-07-25 UAL1796 EWR → ORD Jul 25, 01:40 UTCJul 25, 07:25 UTC5h 45m
2026-07-24 UAL1559 EWR → SAT Jul 24, 19:35 UTCJul 25, 00:25 UTC4h 50m
2026-07-24 UAL1304 EWR → CHS Jul 24, 14:05 UTCJul 24, 17:50 UTC3h 45m
2026-07-24 UAL2684 PHL → ORD Jul 24, 10:40 UTCJul 24, 12:10 UTC1h 30m
2026-07-24 UAL1557 OGG → SFO Jul 24, 00:10 UTCJul 24, 01:30 UTC1h 20m
2026-07-23 UAL1989 SFO → IAH Jul 23, 20:45 UTCJul 23, 21:45 UTC1h 0m
2026-07-23 UAL1781 EWR → CHS Jul 23, 18:20 UTCJul 23, 19:15 UTC55m
2026-07-23 UAL1862 ORD → PUJ Jul 23, 13:20 UTCJul 23, 16:50 UTC3h 30m
2026-07-23 UAL768 RDU → EWR Jul 23, 02:20 UTCJul 23, 06:10 UTC3h 50m
2026-07-22 UAL1884 EWR → RSW Jul 22, 23:10 UTCJul 23, 00:30 UTC1h 20m
2026-07-22 UAL1928 IAH → MSY Jul 22, 19:55 UTCJul 22, 20:55 UTC1h 0m
2026-07-22 UAL1288 OGG → SFO Jul 22, 14:05 UTCJul 22, 17:40 UTC3h 35m
2026-07-22 UAL2243 SFO → EUG Jul 22, 03:45 UTCJul 22, 05:25 UTC1h 40m
2026-07-21 UAL2072 EWR → ATL Jul 21, 23:30 UTCJul 22, 02:15 UTC2h 45m
2026-07-21 UAL1955 IAD → PHX Jul 21, 18:05 UTCJul 21, 21:05 UTC3h 0m
2026-07-21 UAL1448 SAN → SFO Jul 21, 14:20 UTCJul 21, 16:10 UTC1h 50m
2026-07-21 UAL1890 LAX → EWR Jul 21, 11:45 UTCJul 21, 12:50 UTC1h 5m
2026-07-20 UAL1559 EWR → SAT Jul 20, 20:05 UTCJul 21, 00:55 UTC4h 50m
2026-07-20 UAL1304 - Jul 20, 14:05 UTCJul 20, 17:40 UTC3h 35m
2026-07-20 UAL1499 EWR → LAX Jul 20, 11:35 UTCJul 20, 12:20 UTC45m
2026-07-20 UAL1499 EWR → LAX Jul 20, 11:50 UTCJul 20, 12:12 UTC22m
2026-07-20 UAL1393 - Jul 20, 02:45 UTCJul 20, 03:25 UTC40m
2026-07-19 UAL630 BUF → ORD Jul 19, 23:25 UTCJul 20, 01:15 UTC1h 50m
2026-07-19 UAL2485 EWR → RDU Jul 19, 20:30 UTCJul 19, 22:15 UTC1h 45m
2026-07-19 UAL8215 LAX → IAH Jul 19, 15:50 UTCJul 19, 19:10 UTC3h 20m
2026-07-18 UAL1418 SFO → DEN Jul 18, 17:00 UTCJul 18, 19:25 UTC2h 25m
2026-07-18 UAL1418 SFO → DEN Jul 18, 15:08 UTCJul 18, 19:35 UTC4h 27m
2026-07-18 UAL2468 - Jul 18, 12:55 UTCJul 18, 13:55 UTC1h 0m
2026-07-18 UAL1611 - Jul 18, 00:19 UTCJul 18, 01:20 UTC1h 0m
2026-07-17 UAL1076 BOS → EWR Jul 17, 18:55 UTCJul 17, 19:45 UTC50m
2026-07-17 UAL1076 BOS → EWR Jul 17, 18:46 UTCJul 17, 19:42 UTC56m
2026-07-17 UAL1669 EWR → BOS Jul 17, 16:10 UTCJul 17, 16:55 UTC45m
2026-07-17 UAL1307 BOS → EWR Jul 17, 13:40 UTCJul 17, 14:30 UTC50m
2026-07-17 UAL593 EWR → BOS Jul 17, 11:30 UTCJul 17, 12:04 UTC35m
2026-07-17 UAL593 EWR → BOS Jul 17, 11:25 UTCJul 17, 12:05 UTC40m
2026-07-17 UAL2186 - Jul 17, 04:29 UTCJul 17, 09:30 UTC5h 0m
2026-07-17 UAL2186 SNA → EWR Jul 17, 04:26 UTCJul 17, 09:27 UTC5h 1m
2026-07-16 UAL1690 EWR → PBI Jul 16, 22:00 UTCJul 17, 02:59 UTC5h 0m
2026-07-16 UAL2174 BNA → EWR Jul 16, 18:44 UTCJul 16, 20:45 UTC2h 0m
2026-07-16 UAL1616 - Jul 16, 15:25 UTCJul 16, 17:10 UTC1h 45m
2026-07-16 UAL2468 - Jul 16, 12:30 UTCJul 16, 13:30 UTC1h 0m
2026-07-16 UAL1611 - Jul 16, 03:20 UTCJul 16, 04:25 UTC1h 5m
2026-07-16 UAL1513 IAD → EWR Jul 16, 00:05 UTCJul 16, 00:55 UTC50m
2026-07-15 UAL1513 IAD → EWR Jul 15, 23:53 UTCJul 16, 00:48 UTC55m

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 N38727 page for operator, model, and routing details .

Mode-S A47809 frequently asked

What is Mode-S code A47809?
A47809 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N38727.
Where is Mode-S A47809 registered?
Mode-S code A47809 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 A47809 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A47809, octal 51074011, decimal 10,778,633.
What flights does A47809 operate?
Mode-S A47809 has broadcast 20 distinct callsigns, including UAL1559, UAL1513, UAL2726, UAL1861, UAL1853.