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sensors Mode-S transponder

AA11C9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N748RR · operated by AMERICAN AIRLINES INC

Hex
AA11C9
Octal
52410711
Decimal
11,145,673
Country
US
Tail
N748RR
Type
E170
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
837
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S AA11C9.

Country allocation

The ICAO 24-bit address AA11C9 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
ENY3716 - 19 2026-07-10
ENY3800 - 15 2026-07-17
ENY3477 - 15 2026-07-11
ENY4151 - 11 2026-07-11
ENY4062 - 10 2026-06-29
ENY3767 - 10 2026-07-13
ENY3556 - 10 2026-07-06
ENY3612 Envoy Air 9 2026-06-22
ENY3610 Envoy Air 9 2026-05-30
ENY4058 Envoy Air 8 2026-05-16
ENY3972 Envoy Air 8 2026-07-26
ENY3600 - 8 2026-07-02
ENY3476 Envoy Air 8 2026-06-14
ENY3446 - 8 2026-06-29
ENY3407 - 8 2026-06-26
ENY3960 Envoy Air 7 2026-05-09
ENY4326 Envoy Air 6 2026-06-08
ENY4293 - 6 2026-07-07
ENY4268 Envoy Air 6 2026-05-13
ENY3698 Envoy Air 6 2026-06-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ENY3972 BOS → ORD Jul 26, 21:50 UTCJul 26, 22:15 UTC25m
2026-07-26 ENY3719 ORD → MSP Jul 26, 19:15 UTCJul 26, 20:10 UTC55m
2026-07-26 ENY3375 ORD → IND Jul 26, 17:05 UTCJul 26, 18:10 UTC1h 5m
2026-07-26 ENY3839 OKC → ORD Jul 26, 14:20 UTCJul 26, 15:40 UTC1h 20m
2026-07-26 ENY3839 OKC → ORD Jul 26, 12:15 UTCJul 26, 13:25 UTC1h 10m
2026-07-26 ENY3909 TYS → ORD Jul 26, 09:55 UTCJul 26, 10:30 UTC35m
2026-07-26 ENY3909 TYS → ORD Jul 26, 09:48 UTCJul 26, 10:38 UTC50m
2026-07-26 ENY3910 CVG → ORD Jul 26, 03:40 UTCJul 26, 04:15 UTC35m
2026-07-26 ENY3740 AUS → ABQ Jul 26, 00:20 UTCJul 26, 01:00 UTC40m
2026-07-25 ENY3740 AUS → ABQ Jul 25, 22:40 UTCJul 25, 23:05 UTC25m
2026-07-25 ENY3543 CMI → ORD Jul 25, 20:25 UTCJul 25, 21:05 UTC40m
2026-07-25 ENY3543 CMI → ORD Jul 25, 18:40 UTCJul 25, 19:15 UTC35m
2026-07-25 ENY4044 EYW → MIA Jul 25, 15:45 UTCJul 25, 17:10 UTC1h 25m
2026-07-25 ENY4044 EYW → MIA Jul 25, 15:40 UTCJul 25, 17:08 UTC1h 28m
2026-07-25 ENY4044 EYW → MIA Jul 25, 13:10 UTCJul 25, 14:25 UTC1h 15m
2026-07-25 ENY4328 DFW → SAT Jul 25, 10:05 UTCJul 25, 10:50 UTC45m
2026-07-25 ENY4331 MHH → CLT Jul 25, 04:05 UTCJul 25, 04:40 UTC35m
2026-07-25 ENY3531 DFW → MTY Jul 25, 00:35 UTCJul 25, 02:35 UTC2h 0m
2026-07-24 ENY3530 RNO → AUS Jul 24, 22:30 UTCJul 24, 23:10 UTC40m
2026-07-24 ENY3530 RNO → AUS Jul 24, 21:00 UTCJul 24, 21:40 UTC40m
2026-07-24 ENY3958 ORD → BMI Jul 24, 17:50 UTCJul 24, 19:20 UTC1h 30m
2026-07-24 ENY3958 ORD → BMI Jul 24, 15:25 UTCJul 24, 16:40 UTC1h 15m
2026-07-24 ENY3525 DFW → GRR Jul 24, 12:15 UTCJul 24, 13:20 UTC1h 5m
2026-07-24 ENY4282 STL → ORD Jul 24, 01:50 UTCJul 24, 02:50 UTC1h 0m
2026-07-24 ENY4282 STL → ORD Jul 24, 01:49 UTCJul 24, 02:59 UTC1h 10m
2026-07-23 ENY3365 CID → ORD Jul 23, 23:25 UTCJul 23, 23:55 UTC30m
2026-07-23 ENY3365 CID → ORD Jul 23, 23:15 UTCJul 23, 23:54 UTC39m
2026-07-23 ENY3365 CID → ORD Jul 23, 21:50 UTCJul 23, 22:10 UTC20m
2026-07-23 ENY3592 CMH → DFW Jul 23, 20:05 UTCJul 23, 21:00 UTC55m
2026-07-23 ENY3592 CMH → DFW Jul 23, 20:03 UTCJul 23, 20:55 UTC52m
2026-07-23 ENY3592 CMH → DFW Jul 23, 18:05 UTCJul 23, 19:15 UTC1h 10m
2026-07-23 ENY3425 DFW → HOU Jul 23, 15:45 UTCJul 23, 17:10 UTC1h 25m
2026-07-23 ENY3425 DFW → HOU Jul 23, 13:10 UTCJul 23, 14:45 UTC1h 35m
2026-07-23 ENY3579 DOM → MIA Jul 23, 05:15 UTCJul 23, 06:40 UTC1h 25m
2026-07-23 ENY4278 DFW → HSV Jul 23, 02:50 UTCJul 23, 04:15 UTC1h 25m
2026-07-22 ENY4011 SDF → DFW Jul 22, 23:37 UTCJul 23, 01:04 UTC1h 27m
2026-07-22 ENY4011 SDF → DFW Jul 22, 20:40 UTCJul 23, 01:10 UTC4h 30m
2026-07-22 ENY3958 - Jul 22, 17:50 UTCJul 22, 19:15 UTC1h 25m
2026-07-22 ENY3958 - Jul 22, 15:25 UTCJul 22, 16:45 UTC1h 20m
2026-07-22 ENY3709 STS → PHX Jul 22, 13:25 UTCJul 22, 14:05 UTC40m
2026-07-22 ENY3714 FAT → PHX Jul 22, 04:05 UTCJul 22, 04:35 UTC30m
2026-07-22 ENY3657 FWA → DFW Jul 22, 01:30 UTCJul 22, 02:25 UTC55m
2026-07-21 ENY3657 FWA → DFW Jul 21, 23:50 UTCJul 22, 00:35 UTC45m
2026-07-21 ENY3730 ORD → BGR Jul 21, 21:45 UTCJul 21, 22:15 UTC30m
2026-07-21 ENY3730 ORD → BGR Jul 21, 21:41 UTCJul 21, 22:14 UTC33m
2026-07-21 ENY3730 ORD → BGR Jul 21, 20:20 UTCJul 21, 21:00 UTC40m
2026-07-21 ENY3829 CLT → RAP Jul 21, 18:00 UTCJul 21, 18:15 UTC15m
2026-07-21 ENY3829 CLT → RAP Jul 21, 17:58 UTCJul 21, 18:39 UTC41m
2026-07-21 ENY3829 CLT → RAP Jul 21, 16:10 UTCJul 21, 17:00 UTC50m
2026-07-21 ENY4137 DCA → RDU Jul 21, 14:00 UTCJul 21, 14:50 UTC50m

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 N748RR page for operator, model, and routing details .

Mode-S AA11C9 frequently asked

What is Mode-S code AA11C9?
AA11C9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N748RR.
Where is Mode-S AA11C9 registered?
Mode-S code AA11C9 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 AA11C9 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA11C9, octal 52410711, decimal 11,145,673.
What flights does AA11C9 operate?
Mode-S AA11C9 has broadcast 20 distinct callsigns, including ENY3716, ENY3800, ENY3477, ENY4151, ENY4062.