Apparatus

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sensors Mode-S transponder

A5D648

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N47517 · BOEING 737 MAX 9 · operated by WILMINGTON TRUST CO TRUSTEE

Hex
A5D648
Octal
51353110
Decimal
10,868,296
Country
US
Tail
N47517
Type
B39M
No current signal · last broadcast Jul 26, 16:50 UTC
Flights observed
428
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 16:50 UTC

Last known position

Most recent position reported by Mode-S A5D648.

Country allocation

The ICAO 24-bit address A5D648 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
UAL2219 - 7 2026-07-19
UAL1118 - 6 2026-07-14
UAL1699 United Airlines 5 2026-04-29
UAL1619 - 5 2026-06-24
UAL1543 United Airlines 5 2026-07-19
UAL1472 United Airlines 5 2026-07-20
UAL1471 United Airlines 5 2026-07-20
UAL2025 - 4 2026-06-19
UAL2022 - 4 2026-06-19
UAL2012 - 4 2026-06-22
UAL1817 - 4 2026-06-19
UAL1694 - 4 2026-06-24
UAL1670 United Airlines 4 2026-07-26
UAL1618 - 4 2026-07-14
UAL1461 United Airlines 4 2026-07-26
UAL1393 United Airlines 4 2026-05-25
UAL1047 United Airlines 4 2026-07-20
UAL8253 - 3 2026-04-13
UAL670 United Airlines 3 2026-04-16
UAL2659 - 3 2026-07-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UAL2373 LAX → KOA Jul 26, 16:20 UTCJul 26, 16:50 UTC30m
2026-07-26 UAL1670 SAL → LAX Jul 26, 08:20 UTCJul 26, 09:50 UTC1h 30m
2026-07-26 UAL1670 SAL → LAX Jul 26, 08:10 UTCJul 26, 12:45 UTC4h 35m
2026-07-26 UAL1461 EWR → SEA Jul 26, 00:15 UTCJul 26, 02:35 UTC2h 20m
2026-07-26 UAL1461 EWR → SEA Jul 26, 00:14 UTCJul 26, 02:51 UTC2h 37m
2026-07-25 UAL1123 CPT → EWR Jul 25, 20:10 UTCJul 25, 22:00 UTC1h 50m
2026-07-25 UAL1054 EWR → CUN Jul 25, 15:00 UTCJul 25, 18:20 UTC3h 20m
2026-07-25 UAL2158 EWR → JAX Jul 25, 10:15 UTCJul 25, 12:30 UTC2h 15m
2026-07-25 UAL2650 SFO → MSY Jul 25, 00:47 UTCJul 25, 02:47 UTC2h 0m
2026-07-25 UAL2650 SFO → MSY Jul 25, 00:40 UTCJul 25, 02:50 UTC2h 10m
2026-07-24 UAL2796 JAX → EWR Jul 24, 21:05 UTCJul 24, 23:00 UTC1h 55m
2026-07-24 UAL2678 ORD → SFO Jul 24, 17:15 UTCJul 24, 19:05 UTC1h 50m
2026-07-24 UAL2330 PHX → EWR Jul 24, 12:15 UTCJul 24, 14:45 UTC2h 30m
2026-07-23 UAL1907 GUA → IAH Jul 23, 22:10 UTCJul 24, 00:50 UTC2h 40m
2026-07-23 UAL2624 LGA → DEN Jul 23, 16:25 UTCJul 23, 18:45 UTC2h 20m
2026-07-23 UAL2624 LGA → DEN Jul 23, 16:29 UTCJul 23, 18:49 UTC2h 20m
2026-07-23 UAL1115 DEN → MCI Jul 23, 12:05 UTCJul 23, 14:45 UTC2h 40m
2026-07-22 UAL402 EWR → BOS Jul 22, 22:10 UTCJul 23, 01:00 UTC2h 50m
2026-07-22 UAL2330 PHX → EWR Jul 22, 17:20 UTCJul 22, 20:25 UTC3h 5m
2026-07-22 UAL1705 ORD → EWR Jul 22, 13:45 UTCJul 22, 15:30 UTC1h 45m
2026-07-22 UAL1012 EWR → BOS Jul 22, 11:10 UTCJul 22, 12:15 UTC1h 5m
2026-07-22 UAL1012 EWR → BOS Jul 22, 10:34 UTCJul 22, 12:12 UTC1h 38m
2026-07-22 UAL2489 - Jul 22, 02:30 UTCJul 22, 04:35 UTC2h 5m
2026-07-22 UAL2489 MCO → EWR Jul 22, 02:12 UTCJul 22, 04:34 UTC2h 22m
2026-07-21 UAL2489 - Jul 21, 19:45 UTCJul 21, 20:40 UTC55m
2026-07-21 UAL1984 ORD → SFO Jul 21, 12:30 UTCJul 21, 13:15 UTC45m
2026-07-21 UAL1984 ORD → SFO Jul 21, 12:15 UTCJul 21, 15:47 UTC3h 32m
2026-07-20 UAL1047 CUN → EWR Jul 20, 23:10 UTCJul 21, 02:50 UTC3h 40m
2026-07-20 UAL1047 CUN → EWR Jul 20, 23:15 UTCJul 21, 02:37 UTC3h 22m
2026-07-20 UAL1987 EWR → CUN Jul 20, 18:15 UTCJul 20, 21:40 UTC3h 25m
2026-07-20 UAL1472 SDQ → EWR Jul 20, 12:25 UTCJul 20, 13:45 UTC1h 20m
2026-07-20 UAL1472 SDQ → EWR Jul 20, 10:11 UTCJul 20, 13:43 UTC3h 32m
2026-07-20 UAL1471 EWR → SDQ Jul 20, 00:05 UTCJul 20, 03:40 UTC3h 35m
2026-07-19 UAL1471 EWR → SDQ Jul 19, 23:43 UTCJul 20, 03:48 UTC4h 5m
2026-07-19 UAL1837 POP → EWR Jul 19, 19:50 UTCJul 19, 21:10 UTC1h 20m
2026-07-19 UAL1078 EWR → POP Jul 19, 13:20 UTCJul 19, 14:15 UTC55m
2026-07-19 UAL1078 EWR → POP Jul 19, 13:24 UTCJul 19, 16:25 UTC3h 1m
2026-07-19 UAL2219 - Jul 19, 10:05 UTCJul 19, 11:35 UTC1h 30m
2026-07-19 UAL2219 - Jul 19, 07:50 UTCJul 19, 08:05 UTC15m
2026-07-19 UAL1543 EWR → SJU Jul 19, 05:45 UTCJul 19, 06:10 UTC25m
2026-07-19 UAL1543 EWR → SJU Jul 19, 02:45 UTCJul 19, 03:40 UTC55m
2026-07-18 UAL1797 - Jul 18, 11:20 UTCJul 18, 14:50 UTC3h 30m
2026-07-17 UAL1058 CUN → IAH Jul 17, 22:45 UTCJul 18, 00:39 UTC1h 55m
2026-07-17 UAL1679 SFO → CUN Jul 17, 16:17 UTCJul 17, 21:10 UTC4h 53m
2026-07-17 UAL1679 SFO → CUN Jul 17, 16:15 UTCJul 17, 19:45 UTC3h 30m
2026-07-17 UAL2363 - Jul 17, 13:15 UTCJul 17, 14:10 UTC55m
2026-07-17 UAL552 SFO → LAX Jul 17, 04:49 UTCJul 17, 05:50 UTC1h 0m
2026-07-16 UAL1572 - Jul 16, 21:40 UTCJul 16, 21:55 UTC15m
2026-07-16 UAL1572 HNL → SFO Jul 16, 21:42 UTCJul 17, 02:12 UTC4h 30m
2026-07-16 UAL1581 - Jul 16, 14:25 UTCJul 16, 15:00 UTC35m

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 N47517 page for operator, model, and routing details .

Mode-S A5D648 frequently asked

What is Mode-S code A5D648?
A5D648 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N47517.
Where is Mode-S A5D648 registered?
Mode-S code A5D648 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 A5D648 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 16:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A5D648, octal 51353110, decimal 10,868,296.
What flights does A5D648 operate?
Mode-S A5D648 has broadcast 20 distinct callsigns, including UAL2219, UAL1118, UAL1699, UAL1619, UAL1543.