Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A9741D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N708UW · AIRBUS A-319 · operated by UMB BANK NA TRUSTEE

Hex
A9741D
Octal
52272035
Decimal
11,105,309
Country
US
Tail
N708UW
Type
A319
No current signal · last broadcast Jul 26, 20:15 UTC
Flights observed
561
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:15 UTC

Last known position

Most recent position reported by Mode-S A9741D.

Country allocation

The ICAO 24-bit address A9741D 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
AAL2939 American Airlines 12 2026-07-24
AAL2705 American Airlines 12 2026-07-24
AAL2706 American Airlines 11 2026-07-24
AAL414 - 10 2026-07-17
AAL308 - 10 2026-07-16
AAL2710 - 8 2026-06-27
AAL2245 American Airlines 8 2026-05-20
AAL2092 American Airlines 8 2026-07-25
AAL1712 American Airlines 8 2026-07-22
AAL3215 American Airlines 6 2026-07-19
AAL3071 American Airlines 6 2026-06-06
AAL2436 American Airlines 6 2026-05-21
AAL2246 - 6 2026-07-15
AAL1927 - 6 2026-06-15
AAL1488 American Airlines 6 2026-07-23
AAL927 American Airlines 5 2026-07-22
AAL641 American Airlines 5 2026-05-20
AAL640 American Airlines 5 2026-05-20
AAL3254 American Airlines 5 2026-05-17
AAL3188 American Airlines 5 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL837 MIA → HAV Jul 26, 19:40 UTCJul 26, 20:15 UTC35m
2026-07-26 AAL1532 PVD → DCA Jul 26, 16:20 UTCJul 26, 16:45 UTC25m
2026-07-26 AAL1519 MIA → SCU Jul 26, 13:25 UTCJul 26, 13:50 UTC25m
2026-07-26 AAL2711 DFW → IND Jul 26, 10:10 UTCJul 26, 11:00 UTC50m
2026-07-26 AAL416 BOS → LAX Jul 26, 03:45 UTCJul 26, 04:35 UTC50m
2026-07-26 AAL416 BOS → LAX Jul 26, 03:40 UTCJul 26, 04:30 UTC50m
2026-07-26 AAL2375 PHX → SAT Jul 26, 00:55 UTCJul 26, 02:35 UTC1h 40m
2026-07-26 AAL2375 PHX → SAT Jul 26, 00:54 UTCJul 26, 02:35 UTC1h 41m
2026-07-25 AAL2375 PHX → SAT Jul 25, 22:25 UTCJul 26, 00:05 UTC1h 40m
2026-07-25 AAL2092 LGA → DFW Jul 25, 20:05 UTCJul 25, 20:45 UTC40m
2026-07-25 AAL2092 LGA → DFW Jul 25, 18:10 UTCJul 25, 18:50 UTC40m
2026-07-25 AAL2730 SYR → CLT Jul 25, 11:35 UTCJul 25, 13:15 UTC1h 40m
2026-07-25 AAL2730 SYR → CLT Jul 25, 11:31 UTCJul 25, 13:19 UTC1h 48m
2026-07-25 AAL2716 DFW → LGA Jul 25, 02:00 UTCJul 25, 03:40 UTC1h 40m
2026-07-24 AAL2939 FLL → DCA Jul 24, 22:40 UTCJul 25, 00:35 UTC1h 55m
2026-07-24 AAL2939 FLL → DCA Jul 24, 19:30 UTCJul 24, 21:25 UTC1h 55m
2026-07-24 AAL2706 HAV → MIA Jul 24, 17:00 UTCJul 24, 17:43 UTC43m
2026-07-24 AAL2705 MIA → HAV Jul 24, 15:10 UTCJul 24, 15:40 UTC30m
2026-07-24 AAL2705 MIA → HAV Jul 24, 15:07 UTCJul 24, 16:01 UTC54m
2026-07-24 AAL2737 IAH → DFW Jul 24, 12:45 UTCJul 24, 13:25 UTC40m
2026-07-24 AAL3188 CLT → ORD Jul 24, 02:45 UTCJul 24, 03:20 UTC35m
2026-07-23 AAL2147 BOS → DCA Jul 23, 23:45 UTCJul 24, 00:25 UTC40m
2026-07-23 AAL2147 BOS → DCA Jul 23, 21:50 UTCJul 23, 22:30 UTC40m
2026-07-23 AAL1488 CMW → MIA Jul 23, 19:10 UTCJul 23, 19:40 UTC30m
2026-07-23 AAL1319 SNA → AUS Jul 23, 16:25 UTCJul 23, 16:50 UTC25m
2026-07-23 AAL1516 YUL → MIA Jul 23, 11:30 UTCJul 23, 14:45 UTC3h 15m
2026-07-23 AAL1516 YUL → MIA Jul 23, 11:25 UTCJul 23, 14:44 UTC3h 19m
2026-07-23 AAL2666 EWR → CLT Jul 23, 00:00 UTCJul 23, 03:00 UTC3h 0m
2026-07-22 AAL927 DCA → DFW Jul 22, 20:30 UTCJul 22, 20:50 UTC20m
2026-07-22 AAL927 DCA → DFW Jul 22, 18:05 UTCJul 22, 18:25 UTC20m
2026-07-22 AAL1712 CLT → EWR Jul 22, 15:20 UTCJul 22, 16:00 UTC40m
2026-07-22 AAL1712 CLT → EWR Jul 22, 15:15 UTCJul 22, 15:55 UTC40m
2026-07-22 AAL1712 CLT → EWR Jul 22, 13:30 UTCJul 22, 14:05 UTC35m
2026-07-21 AAL2147 BOS → DCA Jul 21, 23:55 UTCJul 22, 00:40 UTC45m
2026-07-21 AAL2147 BOS → DCA Jul 21, 21:55 UTCJul 21, 22:30 UTC35m
2026-07-21 AAL2092 MCO → MIA Jul 21, 19:55 UTCJul 21, 20:35 UTC40m
2026-07-21 AAL2092 - Jul 21, 17:50 UTCJul 21, 18:25 UTC35m
2026-07-21 AAL512 PHL → PHX Jul 21, 14:55 UTCJul 21, 16:20 UTC1h 25m
2026-07-21 AAL512 PHL → PHX Jul 21, 12:15 UTCJul 21, 13:45 UTC1h 30m
2026-07-21 AAL2894 VPS → CLT Jul 21, 10:15 UTCJul 21, 10:55 UTC40m
2026-07-21 AAL1813 - Jul 21, 03:00 UTCJul 21, 03:40 UTC40m
2026-07-21 AAL1813 MIA → MCO Jul 21, 02:59 UTCJul 21, 03:36 UTC37m
2026-07-20 AAL1069 DFW → SFO Jul 20, 23:30 UTCJul 21, 01:40 UTC2h 9m
2026-07-20 AAL1985 - Jul 20, 21:55 UTCJul 20, 22:30 UTC35m
2026-07-20 AAL3224 - Jul 20, 18:45 UTCJul 20, 20:50 UTC2h 5m
2026-07-20 AAL3224 - Jul 20, 15:10 UTCJul 20, 16:50 UTC1h 40m
2026-07-20 AAL1550 BOS → DCA Jul 20, 12:30 UTCJul 20, 13:45 UTC1h 15m
2026-07-20 AAL1550 DCA → BOS Jul 20, 10:10 UTCJul 20, 11:15 UTC1h 5m
2026-07-20 AAL1654 DEN → CLT Jul 20, 03:30 UTCJul 20, 04:30 UTC1h 0m
2026-07-20 AAL1654 DEN → CLT Jul 20, 01:15 UTCJul 20, 02:25 UTC1h 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 N708UW page for operator, model, and routing details .

Mode-S A9741D frequently asked

What is Mode-S code A9741D?
A9741D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N708UW.
Where is Mode-S A9741D registered?
Mode-S code A9741D 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 A9741D broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9741D, octal 52272035, decimal 11,105,309.
What flights does A9741D operate?
Mode-S A9741D has broadcast 20 distinct callsigns, including AAL2939, AAL2705, AAL2706, AAL414, AAL308.