Apparatus

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sensors Mode-S transponder

A13650

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N17752 · BOEING 737-700 · operated by UNITED AIRLINES INC

Hex
A13650
Octal
50233120
Decimal
10,565,200
Country
US
Tail
N17752
Type
B737
No current signal · last broadcast Jul 26, 22:00 UTC
Flights observed
472
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:00 UTC

Last known position

Most recent position reported by Mode-S A13650.

Country allocation

The ICAO 24-bit address A13650 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
UAL2032 - 10 2026-07-06
UAL752 United Airlines 9 2026-07-26
UAL2233 United Airlines 9 2026-05-16
UAL1288 - 9 2026-06-24
UAL2606 - 7 2026-07-16
UAL2454 United Airlines 7 2026-06-09
UAL2243 - 7 2026-06-24
UAL2236 United Airlines 7 2026-07-16
UAL1513 United Airlines 7 2026-07-22
UAL1239 - 7 2026-07-07
UAL632 - 6 2026-07-14
UAL630 United Airlines 6 2026-07-22
UAL451 United Airlines 6 2026-04-28
UAL378 United Airlines 6 2026-07-25
UAL2485 United Airlines 6 2026-07-22
UAL2264 - 6 2026-07-15
UAL2165 - 6 2026-07-17
UAL1869 - 6 2026-07-15
UAL1418 United Airlines 6 2026-07-21
UAL1381 - 6 2026-07-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UAL654 AUS → IAD Jul 26, 21:25 UTCJul 26, 22:00 UTC35m
2026-07-26 UAL752 LAX → IAH Jul 26, 18:15 UTCJul 26, 19:35 UTC1h 20m
2026-07-25 UAL378 ORD → EWR Jul 25, 22:05 UTCJul 26, 16:10 UTC18h 6m
2026-07-25 UAL1888 LAX → EWR Jul 25, 18:20 UTCJul 25, 19:50 UTC1h 30m
2026-07-25 UAL519 DEN → SFO Jul 25, 15:50 UTCJul 25, 17:10 UTC1h 20m
2026-07-25 UAL2465 IAD → PWM Jul 25, 13:00 UTCJul 25, 14:10 UTC1h 10m
2026-07-25 UAL2063 PHL → ORD Jul 25, 01:25 UTCJul 25, 02:25 UTC1h 0m
2026-07-24 UAL291 CLT → EWR Jul 24, 21:05 UTCJul 24, 23:00 UTC1h 55m
2026-07-24 UAL2631 ORD → MCI Jul 24, 16:40 UTCJul 24, 18:20 UTC1h 40m
2026-07-24 UAL2631 ORD → MCI Jul 24, 16:13 UTCJul 24, 18:19 UTC2h 6m
2026-07-24 UAL2465 IAD → PWM Jul 24, 13:00 UTCJul 24, 14:15 UTC1h 15m
2026-07-24 UAL2063 PHL → ORD Jul 24, 01:25 UTCJul 24, 02:25 UTC1h 0m
2026-07-23 UAL291 CLT → EWR Jul 23, 21:10 UTCJul 23, 23:05 UTC1h 55m
2026-07-23 UAL2631 ORD → MCI Jul 23, 16:15 UTCJul 23, 18:00 UTC1h 45m
2026-07-23 UAL2465 IAD → PWM Jul 23, 12:55 UTCJul 23, 14:40 UTC1h 45m
2026-07-23 UAL2063 PHL → ORD Jul 23, 01:40 UTCJul 23, 02:35 UTC55m
2026-07-22 UAL630 BUF → ORD Jul 22, 21:55 UTCJul 22, 23:55 UTC2h 0m
2026-07-22 UAL2485 ORD → DEN Jul 22, 18:53 UTCJul 22, 19:53 UTC1h 0m
2026-07-22 UAL2485 ORD → DEN Jul 22, 18:50 UTCJul 22, 20:00 UTC1h 10m
2026-07-22 UAL1513 IAH → SFO Jul 22, 14:40 UTCJul 22, 17:25 UTC2h 45m
2026-07-21 UAL1418 SFO → DEN Jul 21, 16:25 UTCJul 21, 18:55 UTC2h 30m
2026-07-21 UAL1343 EWR → TPA Jul 21, 10:10 UTCJul 21, 12:40 UTC2h 30m
2026-07-21 UAL1324 - Jul 21, 02:05 UTCJul 21, 04:20 UTC2h 15m
2026-07-21 UAL1324 EWR → SRQ Jul 21, 02:03 UTCJul 21, 04:19 UTC2h 16m
2026-07-20 UAL554 EWR → DFW Jul 20, 23:25 UTCJul 21, 00:35 UTC1h 9m
2026-07-19 UAL1611 EWR → CLE Jul 19, 23:10 UTCJul 20, 00:15 UTC1h 5m
2026-07-19 UAL2174 BNA → EWR Jul 19, 18:45 UTCJul 19, 20:25 UTC1h 40m
2026-07-19 UAL2174 BNA → EWR Jul 19, 18:33 UTCJul 19, 20:20 UTC1h 47m
2026-07-18 UAL1616 EWR → BNA Jul 18, 23:00 UTCJul 19, 00:45 UTC1h 45m
2026-07-18 UAL499 DEN → EWR Jul 18, 01:54 UTCJul 18, 03:45 UTC1h 51m
2026-07-17 UAL2165 - Jul 17, 22:45 UTCJul 18, 00:19 UTC1h 35m
2026-07-17 UAL1860 - Jul 17, 17:40 UTCJul 17, 19:25 UTC1h 45m
2026-07-17 UAL1861 - Jul 17, 14:50 UTCJul 17, 15:49 UTC1h 0m
2026-07-17 UAL1861 IAH → VER Jul 17, 14:52 UTCJul 17, 16:32 UTC1h 40m
2026-07-17 UAL2464 - Jul 17, 10:35 UTCJul 17, 13:05 UTC2h 30m
2026-07-17 UAL1259 - Jul 17, 00:35 UTCJul 17, 03:05 UTC2h 30m
2026-07-16 UAL2236 SFO → BOS Jul 16, 20:15 UTCJul 16, 23:05 UTC2h 50m
2026-07-16 UAL2606 - Jul 16, 15:30 UTCJul 16, 18:10 UTC2h 40m
2026-07-16 UAL410 - Jul 16, 12:55 UTCJul 16, 13:34 UTC40m
2026-07-16 UAL410 IAH → MIA Jul 16, 12:59 UTCJul 16, 13:36 UTC37m
2026-07-15 UAL1869 IAD → SAT Jul 15, 22:30 UTCJul 16, 01:25 UTC2h 55m
2026-07-15 UAL2264 SLC → IAD Jul 15, 15:30 UTCJul 15, 19:15 UTC3h 45m
2026-07-14 UAL2410 IAD → SLC Jul 14, 22:10 UTCJul 15, 02:05 UTC3h 54m
2026-07-14 UAL1764 - Jul 14, 19:25 UTCJul 14, 20:15 UTC50m
2026-07-14 UAL632 IAD → BDL Jul 14, 17:05 UTCJul 14, 18:00 UTC55m
2026-07-14 UAL632 IAD → BDL Jul 14, 16:56 UTCJul 14, 18:00 UTC1h 4m
2026-07-14 UAL471 - Jul 14, 12:10 UTCJul 14, 15:15 UTC3h 5m
2026-07-13 UAL1869 - Jul 13, 22:05 UTCJul 14, 01:00 UTC2h 55m
2026-07-13 UAL1764 - Jul 13, 19:20 UTCJul 13, 20:15 UTC55m
2026-07-13 UAL632 IAD → BDL Jul 13, 17:10 UTCJul 13, 18:05 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 N17752 page for operator, model, and routing details .

Mode-S A13650 frequently asked

What is Mode-S code A13650?
A13650 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N17752.
Where is Mode-S A13650 registered?
Mode-S code A13650 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 A13650 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 A13650, octal 50233120, decimal 10,565,200.
What flights does A13650 operate?
Mode-S A13650 has broadcast 20 distinct callsigns, including UAL2032, UAL752, UAL2233, UAL1288, UAL2606.