Apparatus

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sensors Mode-S transponder

AAE757

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N801UA · AIRBUS A-319 · operated by UNITED AIRLINES INC

Hex
AAE757
Octal
52563527
Decimal
11,200,343
Country
US
Tail
N801UA
Type
A319
Broadcasting now · callsign UAL1383 · 38,025 ft
Flights observed
442
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:40 UTC

Current position

AAE757 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AAE757 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
UAL2483 - 6 2026-07-15
UAL1604 United Airlines 6 2026-07-22
UAL2670 United Airlines 5 2026-07-20
UAL2437 - 5 2026-07-07
UAL790 United Airlines 4 2026-04-17
UAL652 - 4 2026-07-22
UAL587 United Airlines 4 2026-07-07
UAL568 United Airlines 4 2026-07-25
UAL412 United Airlines 4 2026-06-06
UAL375 - 4 2026-04-13
UAL2745 United Airlines 4 2026-07-26
UAL2311 United Airlines 4 2026-04-26
UAL2173 United Airlines 4 2026-07-25
UAL1874 United Airlines 4 2026-07-25
UAL1586 - 4 2026-06-18
UAL1439 United Airlines 4 2026-07-20
UAL1380 United Airlines 4 2026-07-22
UAL1345 United Airlines 4 2026-04-27
UAL1240 - 4 2026-07-19
UAL822 United Airlines 3 2026-06-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UAL732 DEN → CVG Jul 26, 20:05 UTCJul 26, 21:35 UTC1h 30m
2026-07-26 UAL586 DEN → MCI Jul 26, 15:55 UTCJul 26, 18:05 UTC2h 10m
2026-07-26 UAL2745 HNL → SFO Jul 26, 02:25 UTCJul 26, 04:35 UTC2h 10m
2026-07-26 UAL2745 HNL → SFO Jul 26, 02:25 UTCJul 26, 04:29 UTC2h 4m
2026-07-25 UAL568 IAH → SFO Jul 25, 20:40 UTCJul 25, 23:40 UTC3h 0m
2026-07-25 UAL1874 SFO → IND Jul 25, 16:10 UTCJul 25, 18:55 UTC2h 45m
2026-07-25 UAL2255 MSO → DEN Jul 25, 14:00 UTCJul 25, 14:20 UTC20m
2026-07-25 UAL2173 MYR → ORD Jul 25, 02:25 UTCJul 25, 02:40 UTC15m
2026-07-24 UAL568 IAH → SFO Jul 24, 21:50 UTCJul 25, 00:40 UTC2h 50m
2026-07-24 UAL1874 SFO → IND Jul 24, 16:20 UTCJul 24, 19:00 UTC2h 40m
2026-07-23 UAL1225 ONT → SFO Jul 23, 03:15 UTCJul 23, 04:55 UTC1h 40m
2026-07-22 UAL1604 SFO → BNA Jul 22, 23:05 UTCJul 23, 00:25 UTC1h 20m
2026-07-22 UAL1380 IAD → DFW Jul 22, 18:45 UTCJul 22, 20:40 UTC1h 55m
2026-07-22 UAL652 DEN → STL Jul 22, 15:45 UTCJul 22, 17:35 UTC1h 50m
2026-07-22 UAL393 BWI → DEN Jul 22, 12:10 UTCJul 22, 14:00 UTC1h 50m
2026-07-22 UAL1322 SFO → RNO Jul 22, 01:55 UTCJul 22, 03:50 UTC1h 55m
2026-07-21 UAL447 SFO → SEA Jul 21, 21:00 UTCJul 21, 23:25 UTC2h 25m
2026-07-21 UAL1241 - Jul 21, 16:30 UTCJul 21, 18:45 UTC2h 15m
2026-07-21 UAL225 ATL → DEN Jul 21, 12:45 UTCJul 21, 14:30 UTC1h 45m
2026-07-21 UAL2852 EWR → DEN Jul 21, 03:20 UTCJul 21, 05:15 UTC1h 55m
2026-07-21 UAL1602 DFW → DEN Jul 21, 00:00 UTCJul 21, 01:30 UTC1h 30m
2026-07-20 UAL1439 EWR → SFO Jul 20, 21:40 UTCJul 20, 22:30 UTC50m
2026-07-20 UAL2079 SFO → BOS Jul 20, 14:50 UTCJul 20, 19:30 UTC4h 40m
2026-07-20 UAL2670 ORD → CLE Jul 20, 12:15 UTCJul 20, 13:05 UTC50m
2026-07-20 UAL1183 - Jul 20, 03:05 UTCJul 20, 03:50 UTC45m
2026-07-19 UAL283 DFW → EWR Jul 19, 22:55 UTCJul 20, 01:15 UTC2h 20m
2026-07-19 UAL732 DEN → CVG Jul 19, 20:20 UTCJul 19, 21:50 UTC1h 30m
2026-07-19 UAL502 IAH → DCA Jul 19, 15:45 UTCJul 19, 17:55 UTC2h 10m
2026-07-19 UAL1366 IAD → DEN Jul 19, 12:55 UTCJul 19, 14:20 UTC1h 25m
2026-07-19 UAL1240 DFW → IAD Jul 19, 02:05 UTCJul 19, 04:30 UTC2h 25m
2026-07-19 UAL1240 DFW → IAD Jul 19, 01:50 UTCJul 19, 04:26 UTC2h 36m
2026-07-18 UAL1439 EWR → SFO Jul 18, 22:45 UTCJul 18, 23:30 UTC45m
2026-07-18 UAL1439 EWR → SFO Jul 18, 22:51 UTCJul 18, 23:23 UTC32m
2026-07-18 UAL1072 - Jul 18, 15:00 UTCJul 18, 19:35 UTC4h 35m
2026-07-18 UAL2670 ORD → CLE Jul 18, 12:16 UTCJul 18, 12:44 UTC28m
2026-07-18 UAL2670 ORD → CLE Jul 18, 12:05 UTCJul 18, 12:45 UTC40m
2026-07-18 UAL1183 - Jul 18, 05:30 UTCJul 18, 06:10 UTC40m
2026-07-18 UAL2376 - Jul 18, 02:29 UTCJul 18, 04:00 UTC1h 31m
2026-07-17 UAL1211 - Jul 17, 21:55 UTCJul 17, 23:45 UTC1h 50m
2026-07-17 UAL2190 - Jul 17, 16:10 UTCJul 17, 18:40 UTC2h 30m
2026-07-17 UAL2190 DCA → IAH Jul 17, 15:58 UTCJul 17, 18:39 UTC2h 41m
2026-07-17 UAL482 - Jul 17, 12:30 UTCJul 17, 13:50 UTC1h 20m
2026-07-16 UAL2770 - Jul 16, 22:55 UTCJul 16, 23:59 UTC1h 5m
2026-07-16 UAL1634 - Jul 16, 19:40 UTCJul 16, 20:45 UTC1h 5m
2026-07-16 UAL2451 SJC → ORD Jul 16, 13:40 UTCJul 16, 17:40 UTC4h 0m
2026-07-16 UAL481 ORD → SJC Jul 16, 01:30 UTCJul 16, 05:15 UTC3h 45m
2026-07-15 UAL1357 EUG → ORD Jul 15, 20:05 UTCJul 15, 23:55 UTC3h 50m
2026-07-15 UAL2483 - Jul 15, 14:10 UTCJul 15, 17:55 UTC3h 45m
2026-07-15 UAL2483 ORD → EUG Jul 15, 14:23 UTCJul 15, 17:54 UTC3h 31m
2026-07-15 UAL1486 - Jul 15, 11:25 UTCJul 15, 12:05 UTC40m

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 N801UA page for operator, model, and routing details .

Mode-S AAE757 frequently asked

What is Mode-S code AAE757?
AAE757 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N801UA.
Where is Mode-S AAE757 registered?
Mode-S code AAE757 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 AAE757 broadcasting right now?
Yes. Mode-S AAE757 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAE757, octal 52563527, decimal 11,200,343.
What flights does AAE757 operate?
Mode-S AAE757 has broadcast 20 distinct callsigns, including UAL2483, UAL1604, UAL2670, UAL2437, UAL790.