Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A46CC1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N38417 · BOEING 737-900 · operated by UNITED AIRLINES INC

Hex
A46CC1
Octal
51066301
Decimal
10,775,745
Country
US
Tail
N38417
Type
B739
No current signal · last broadcast Jul 26, 22:05 UTC
Flights observed
435
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:05 UTC

Last known position

Most recent position reported by Mode-S A46CC1.

Country allocation

The ICAO 24-bit address A46CC1 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
UAL1689 United Airlines 6 2026-07-24
UAL2476 United Airlines 5 2026-06-08
UAL1616 - 5 2026-07-14
UAL1051 - 5 2026-07-10
UAL2741 United Airlines 4 2026-05-27
UAL2437 United Airlines 4 2026-07-22
UAL2174 - 4 2026-07-14
UAL2142 United Airlines 4 2026-04-18
UAL1764 United Airlines 4 2026-07-23
UAL1252 United Airlines 4 2026-07-24
UAL1018 United Airlines 4 2026-07-10
UAL8161 - 3 2026-07-16
UAL777 United Airlines 3 2026-04-16
UAL592 United Airlines 3 2026-05-25
UAL503 United Airlines 3 2026-05-18
UAL279 - 3 2026-06-24
UAL2737 - 3 2026-06-14
UAL2683 United Airlines 3 2026-07-24
UAL2486 United Airlines 3 2026-07-25
UAL2160 United Airlines 3 2026-06-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UAL1916 IAH → PTY Jul 26, 15:45 UTCJul 26, 22:05 UTC6h 20m
2026-07-26 UAL2310 MIA → EWR Jul 26, 10:35 UTCJul 26, 12:35 UTC2h 0m
2026-07-25 UAL2486 SAN → ORD Jul 25, 00:25 UTCJul 25, 04:15 UTC3h 50m
2026-07-24 UAL2683 ORD → SAN Jul 24, 18:35 UTCJul 24, 22:10 UTC3h 35m
2026-07-24 UAL1252 EWR → MIA Jul 24, 14:55 UTCJul 24, 16:20 UTC1h 25m
2026-07-24 UAL1689 IAH → SFO Jul 24, 11:54 UTCJul 24, 12:59 UTC1h 5m
2026-07-24 UAL1689 IAH → SFO Jul 24, 11:40 UTCJul 24, 13:00 UTC1h 20m
2026-07-23 UAL2486 SAN → ORD Jul 23, 23:50 UTCJul 24, 03:35 UTC3h 45m
2026-07-23 UAL2683 ORD → SAN Jul 23, 18:55 UTCJul 23, 22:25 UTC3h 30m
2026-07-23 UAL1252 EWR → MIA Jul 23, 14:40 UTCJul 23, 16:10 UTC1h 30m
2026-07-23 UAL1689 IAH → SFO Jul 23, 11:55 UTCJul 23, 13:10 UTC1h 15m
2026-07-23 UAL2102 DFW → EWR Jul 23, 06:40 UTCJul 23, 09:45 UTC3h 5m
2026-07-23 UAL1764 SFO → IAH Jul 23, 00:30 UTCJul 23, 04:50 UTC4h 20m
2026-07-22 UAL2437 LGA → DEN Jul 22, 21:45 UTCJul 22, 23:00 UTC1h 15m
2026-07-22 UAL1875 FLL → EWR Jul 22, 15:45 UTCJul 22, 17:45 UTC2h 0m
2026-07-22 UAL2603 LAX → SFO Jul 22, 11:10 UTCJul 22, 13:35 UTC2h 25m
2026-07-22 UAL1573 SFO → BOS Jul 22, 00:00 UTCJul 22, 04:25 UTC4h 25m
2026-07-21 UAL1689 IAH → SFO Jul 21, 17:30 UTCJul 21, 22:15 UTC4h 45m
2026-07-21 UAL2277 ORD → SAT Jul 21, 13:55 UTCJul 21, 15:30 UTC1h 35m
2026-07-21 UAL2070 SFO → PDX Jul 21, 10:20 UTCJul 21, 12:00 UTC1h 40m
2026-07-21 UAL2070 SFO → PDX Jul 21, 10:22 UTCJul 21, 11:45 UTC1h 23m
2026-07-20 UAL2131 PBI → EWR Jul 20, 20:25 UTCJul 21, 00:50 UTC4h 25m
2026-07-20 UAL2101 PBI → EWR Jul 20, 13:15 UTCJul 20, 18:25 UTC5h 10m
2026-07-20 UAL1252 EWR → MIA Jul 20, 10:05 UTCJul 20, 10:50 UTC45m
2026-07-20 UAL2652 ORD → CLE Jul 20, 00:00 UTCJul 20, 00:45 UTC45m
2026-07-18 UAL1121 IAH → MSY Jul 18, 20:20 UTCJul 19, 00:35 UTC4h 15m
2026-07-18 UAL1120 - Jul 18, 13:45 UTCJul 18, 17:00 UTC3h 15m
2026-07-18 UAL1120 ORD → LIR Jul 18, 13:48 UTCJul 18, 18:04 UTC4h 16m
2026-07-18 UAL2486 SAN → ORD Jul 18, 00:29 UTCJul 18, 04:20 UTC3h 51m
2026-07-17 UAL2683 ORD → SAN Jul 17, 18:55 UTCJul 17, 22:35 UTC3h 40m
2026-07-17 UAL1252 IAD → ORD Jul 17, 15:10 UTCJul 17, 16:40 UTC1h 30m
2026-07-17 UAL1689 - Jul 17, 11:55 UTCJul 17, 13:20 UTC1h 25m
2026-07-17 UAL2102 DFW → EWR Jul 17, 06:50 UTCJul 17, 10:00 UTC3h 10m
2026-07-17 UAL1764 IAD → LAS Jul 17, 00:43 UTCJul 17, 04:48 UTC4h 5m
2026-07-17 UAL1764 IAD → LAS Jul 17, 00:35 UTCJul 17, 04:49 UTC4h 15m
2026-07-16 UAL2437 ORD → IAD Jul 16, 21:40 UTCJul 16, 22:54 UTC1h 14m
2026-07-16 UAL2437 ORD → IAD Jul 16, 21:35 UTCJul 16, 22:59 UTC1h 25m
2026-07-16 UAL8161 - Jul 16, 18:40 UTCJul 16, 19:55 UTC1h 15m
2026-07-16 UAL8161 BNA → ORD Jul 16, 18:05 UTCJul 16, 19:39 UTC1h 34m
2026-07-16 UAL605 DEN → BNA Jul 16, 14:15 UTCJul 16, 16:30 UTC2h 15m
2026-07-16 UAL2433 BOS → DEN Jul 16, 01:10 UTCJul 16, 04:50 UTC3h 40m
2026-07-15 UAL2466 ORD → BOS Jul 15, 21:35 UTCJul 15, 23:30 UTC1h 55m
2026-07-15 UAL2053 - Jul 15, 17:15 UTCJul 15, 19:00 UTC1h 45m
2026-07-15 UAL2132 SMF → EWR Jul 15, 06:35 UTCJul 15, 11:30 UTC4h 55m
2026-07-14 UAL2624 EWR → SMF Jul 14, 22:45 UTCJul 15, 03:40 UTC4h 55m
2026-07-14 UAL2174 - Jul 14, 18:55 UTCJul 14, 20:45 UTC1h 50m
2026-07-14 UAL1616 - Jul 14, 15:10 UTCJul 14, 16:50 UTC1h 40m
2026-07-14 UAL2468 - Jul 14, 12:20 UTCJul 14, 13:25 UTC1h 5m
2026-07-13 UAL2725 - Jul 13, 21:55 UTCJul 14, 00:15 UTC2h 20m
2026-07-13 UAL1706 - Jul 13, 18:35 UTCJul 13, 20:45 UTC2h 10m

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 N38417 page for operator, model, and routing details .

Mode-S A46CC1 frequently asked

What is Mode-S code A46CC1?
A46CC1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N38417.
Where is Mode-S A46CC1 registered?
Mode-S code A46CC1 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 A46CC1 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A46CC1, octal 51066301, decimal 10,775,745.
What flights does A46CC1 operate?
Mode-S A46CC1 has broadcast 20 distinct callsigns, including UAL1689, UAL2476, UAL1616, UAL1051, UAL2741.