Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A10E8B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N16732 · BOEING 737-700 · operated by UNITED AIRLINES INC

Hex
A10E8B
Octal
50207213
Decimal
10,555,019
Country
US
Tail
N16732
Type
B737
No current signal · last broadcast Jul 26, 22:45 UTC
Flights observed
272
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:45 UTC

Last known position

Most recent position reported by Mode-S A10E8B.

Country allocation

The ICAO 24-bit address A10E8B 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
UAL1381 - 7 2026-06-24
UAL378 United Airlines 6 2026-06-14
UAL1888 United Airlines 5 2026-06-14
UAL1513 United Airlines 5 2026-07-23
UAL1418 United Airlines 5 2026-07-23
UAL2612 United Airlines 4 2026-07-24
UAL2485 United Airlines 4 2026-07-24
UAL2454 United Airlines 4 2026-07-19
UAL2346 United Airlines 4 2026-06-11
UAL2072 - 4 2026-06-15
UAL1884 - 4 2026-07-13
UAL1226 United Airlines 4 2026-06-04
UAL780 - 3 2026-07-05
UAL752 United Airlines 3 2026-06-01
UAL722 - 3 2026-06-30
UAL630 United Airlines 3 2026-07-24
UAL592 United Airlines 3 2026-06-08
UAL499 United Airlines 3 2026-07-21
UAL471 - 3 2026-07-05
UAL441 United Airlines 3 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UAL8284 DEN → CID Jul 26, 22:25 UTCJul 26, 22:45 UTC20m
2026-07-26 UAL1928 IAH → MSY Jul 26, 20:05 UTCJul 26, 21:00 UTC55m
2026-07-26 UAL374 EWR → PBI Jul 26, 16:10 UTCJul 26, 17:45 UTC1h 35m
2026-07-26 UAL382 IAH → SAT Jul 26, 13:25 UTCJul 26, 14:45 UTC1h 20m
2026-07-26 UAL2684 PHL → ORD Jul 26, 10:40 UTCJul 26, 12:10 UTC1h 30m
2026-07-26 UAL1557 OGG → SFO Jul 26, 00:10 UTCJul 26, 01:25 UTC1h 15m
2026-07-25 UAL739 SFO → AUS Jul 25, 20:50 UTCJul 25, 21:55 UTC1h 5m
2026-07-25 UAL247 DTW → ORD Jul 25, 18:10 UTCJul 25, 19:05 UTC55m
2026-07-25 UAL247 DTW → ORD Jul 25, 18:18 UTCJul 25, 19:05 UTC47m
2026-07-24 UAL630 BUF → ORD Jul 24, 21:35 UTCJul 24, 23:15 UTC1h 40m
2026-07-24 UAL2485 ORD → DEN Jul 24, 18:55 UTCJul 24, 20:05 UTC1h 10m
2026-07-24 UAL2612 EWR → PHX Jul 24, 00:35 UTCJul 24, 16:50 UTC16h 15m
2026-07-23 UAL1513 IAH → SFO Jul 23, 20:35 UTCJul 23, 23:10 UTC2h 35m
2026-07-23 UAL1418 SFO → DEN Jul 23, 14:55 UTCJul 23, 17:30 UTC2h 35m
2026-07-23 UAL2468 - Jul 23, 12:40 UTCJul 23, 13:40 UTC1h 0m
2026-07-22 UAL8122 YUL → BOS Jul 22, 23:20 UTCJul 23, 00:25 UTC1h 5m
2026-07-22 UAL8151 YYZ → DTW Jul 22, 18:50 UTCJul 22, 21:25 UTC2h 35m
2026-07-22 UAL1418 SFO → DEN Jul 22, 14:40 UTCJul 22, 17:25 UTC2h 45m
2026-07-22 UAL1418 SFO → DEN Jul 22, 14:40 UTCJul 22, 17:15 UTC2h 35m
2026-07-22 UAL1343 EWR → TPA Jul 22, 11:10 UTCJul 22, 12:35 UTC1h 25m
2026-07-21 UAL2772 MSY → IAH Jul 21, 12:50 UTCJul 21, 15:10 UTC2h 20m
2026-07-21 UAL499 DEN → EWR Jul 21, 01:00 UTCJul 21, 03:00 UTC2h 0m
2026-07-20 UAL2165 EWR → IAH Jul 20, 21:40 UTCJul 20, 23:15 UTC1h 35m
2026-07-20 UAL1089 - Jul 20, 15:50 UTCJul 20, 17:35 UTC1h 45m
2026-07-20 UAL1024 - Jul 20, 12:25 UTCJul 20, 12:45 UTC20m
2026-07-20 UAL1024 IAH → MEX Jul 20, 12:37 UTCJul 20, 14:06 UTC1h 29m
2026-07-20 UAL2490 - Jul 20, 02:00 UTCJul 20, 03:25 UTC1h 25m
2026-07-19 UAL2454 ORD → LGA Jul 19, 22:20 UTCJul 20, 00:15 UTC1h 55m
2026-07-19 UAL458 PBI → EWR Jul 19, 15:00 UTCJul 19, 19:45 UTC4h 45m
2026-07-18 UAL1258 ORD → UVF Jul 18, 14:50 UTCJul 18, 19:05 UTC4h 15m
2026-07-18 UAL1258 ORD → UVF Jul 18, 14:40 UTCJul 18, 19:50 UTC5h 10m
2026-07-18 UAL2218 SJU → EWR Jul 18, 11:25 UTCJul 18, 12:40 UTC1h 15m
2026-07-18 UAL1946 - Jul 18, 03:25 UTCJul 18, 04:35 UTC1h 10m
2026-07-18 UAL1946 LAX → ORD Jul 18, 03:07 UTCJul 18, 04:34 UTC1h 27m
2026-07-17 UAL1989 - Jul 17, 23:39 UTCJul 18, 00:35 UTC55m
2026-07-17 UAL1781 - Jul 17, 21:30 UTCJul 17, 22:15 UTC45m
2026-07-17 UAL1862 - Jul 17, 13:40 UTCJul 17, 17:30 UTC3h 50m
2026-07-17 UAL768 - Jul 17, 02:25 UTCJul 17, 06:00 UTC3h 35m
2026-07-16 UAL630 - Jul 16, 21:19 UTCJul 16, 23:05 UTC1h 45m
2026-07-16 UAL2485 - Jul 16, 18:59 UTCJul 16, 20:05 UTC1h 5m
2026-07-15 UAL2612 EWR → EWR Jul 15, 22:55 UTCJul 16, 17:14 UTC18h 20m
2026-07-15 UAL2174 BNA → EWR Jul 15, 19:00 UTCJul 15, 20:50 UTC1h 50m
2026-07-15 UAL1616 - Jul 15, 15:05 UTCJul 15, 16:45 UTC1h 40m
2026-07-15 UAL2468 - Jul 15, 12:35 UTCJul 15, 13:35 UTC1h 0m
2026-07-14 UAL1611 EWR → CLE Jul 14, 22:50 UTCJul 14, 23:50 UTC1h 0m
2026-07-14 UAL1513 - Jul 14, 18:35 UTCJul 14, 21:20 UTC2h 45m
2026-07-14 UAL1513 EWR → SAN Jul 14, 18:44 UTCJul 14, 21:17 UTC2h 33m
2026-07-14 UAL1418 - Jul 14, 14:25 UTCJul 14, 16:55 UTC2h 30m
2026-07-14 UAL1343 - Jul 14, 10:15 UTCJul 14, 12:35 UTC2h 20m
2026-07-14 UAL1324 - Jul 14, 00:25 UTCJul 14, 02:45 UTC2h 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 N16732 page for operator, model, and routing details .

Mode-S A10E8B frequently asked

What is Mode-S code A10E8B?
A10E8B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N16732.
Where is Mode-S A10E8B registered?
Mode-S code A10E8B 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 A10E8B broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A10E8B, octal 50207213, decimal 10,555,019.
What flights does A10E8B operate?
Mode-S A10E8B has broadcast 20 distinct callsigns, including UAL1381, UAL378, UAL1888, UAL1513, UAL1418.