Apparatus

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sensors Mode-S transponder

A1BABB

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N210NN · EMBRAER ERJ-170-200 (long wing) · operated by AMERICAN AIRLINES INC

Hex
A1BABB
Octal
50335273
Decimal
10,599,099
Country
US
Tail
N210NN
Type
E75L
No current signal · last broadcast 24d ago
Flights observed
491
Distinct callsigns
20
Country
US
Last broadcast
24d ago

Last known position

Most recent position reported by Mode-S A1BABB.

Country allocation

The ICAO 24-bit address A1BABB 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
ENY3611 - 7 2026-06-18
ENY3368 - 7 2026-06-19
ENY4166 Envoy Air 6 2026-04-30
ENY3652 Envoy Air 6 2026-06-05
ENY3639 Envoy Air 6 2026-05-22
ENY3617 Envoy Air 6 2026-06-05
ENY3860 Envoy Air 5 2026-04-21
ENY3592 Envoy Air 5 2026-05-22
ENY3478 Envoy Air 5 2026-06-10
ENY4254 Envoy Air 4 2026-05-05
ENY4138 Envoy Air 4 2026-06-13
ENY4113 Envoy Air 4 2026-06-05
ENY4100 Envoy Air 4 2026-06-04
ENY4093 Envoy Air 4 2026-04-25
ENY3919 Envoy Air 4 2026-05-17
ENY3811 Envoy Air 4 2026-05-06
ENY3797 Envoy Air 4 2026-06-02
ENY3666 - 4 2026-06-17
ENY3508 Envoy Air 4 2026-05-07
ENY3422 Envoy Air 4 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-19 ENY3368 DFW → ABI Jun 19, 18:01 UTCJun 19, 18:42 UTC41m
2026-06-19 ENY3368 - Jun 19, 18:05 UTCJun 19, 18:25 UTC20m
2026-06-18 ENY3368 - Jun 18, 19:05 UTCJun 18, 19:40 UTC35m
2026-06-18 ENY3368 ABI → DFW Jun 18, 19:00 UTCJun 18, 19:35 UTC35m
2026-06-18 ENY3368 - Jun 18, 17:10 UTCJun 18, 17:30 UTC20m
2026-06-18 ENY3737 SBP → PHX Jun 18, 12:40 UTCJun 18, 13:15 UTC35m
2026-06-18 ENY3611 - Jun 18, 02:35 UTCJun 18, 03:00 UTC25m
2026-06-17 ENY3365 - Jun 17, 23:40 UTCJun 18, 00:20 UTC40m
2026-06-17 ENY3365 - Jun 17, 21:45 UTCJun 17, 22:10 UTC25m
2026-06-17 ENY3601 GGG → DFW Jun 17, 11:05 UTCJun 17, 11:40 UTC35m
2026-06-17 ENY3601 GGG → DFW Jun 17, 11:05 UTCJun 17, 11:39 UTC34m
2026-06-17 ENY3666 - Jun 17, 04:10 UTCJun 17, 04:35 UTC25m
2026-06-17 ENY3666 DFW → GGG Jun 17, 04:07 UTCJun 17, 04:35 UTC28m
2026-06-16 ENY4098 JAX → ORD Jun 16, 23:30 UTCJun 17, 00:35 UTC1h 5m
2026-06-16 ENY4098 JAX → ORD Jun 16, 21:35 UTCJun 16, 22:30 UTC55m
2026-06-16 ENY3636 - Jun 16, 19:10 UTCJun 16, 20:00 UTC51m
2026-06-16 ENY3636 LIT → DFW Jun 16, 19:01 UTCJun 16, 19:56 UTC55m
2026-06-16 ENY3636 - Jun 16, 17:15 UTCJun 16, 17:49 UTC35m
2026-06-16 ENY3700 PIA → ORD Jun 16, 14:35 UTCJun 16, 15:50 UTC1h 15m
2026-06-16 ENY3700 PIA → ORD Jun 16, 14:29 UTCJun 16, 15:48 UTC1h 19m
2026-06-16 ENY3700 PIA → ORD Jun 16, 12:30 UTCJun 16, 13:34 UTC1h 5m
2026-06-16 ENY3988 MSN → DCA Jun 16, 10:09 UTCJun 16, 10:45 UTC35m
2026-06-16 ENY3988 MSN → DCA Jun 16, 10:08 UTCJun 16, 10:48 UTC40m
2026-06-16 ENY3380 - Jun 16, 01:55 UTCJun 16, 04:30 UTC2h 35m
2026-06-15 ENY3517 ATL → CLT Jun 15, 23:54 UTCJun 16, 00:20 UTC25m
2026-06-15 ENY3517 ATL → CLT Jun 15, 22:25 UTCJun 15, 22:45 UTC20m
2026-06-15 ENY3927 - Jun 15, 19:05 UTCJun 15, 19:45 UTC40m
2026-06-15 ENY3927 - Jun 15, 16:49 UTCJun 15, 17:15 UTC25m
2026-06-15 ENY3342 - Jun 15, 12:35 UTCJun 15, 14:55 UTC2h 20m
2026-06-15 ENY3342 EIS → MIA Jun 15, 12:24 UTCJun 15, 14:54 UTC2h 30m
2026-06-14 ENY3376 CMH → MIA Jun 14, 23:20 UTCJun 15, 01:35 UTC2h 15m
2026-06-14 ENY3884 SDF → DFW Jun 14, 21:55 UTCJun 14, 22:20 UTC25m
2026-06-14 ENY3884 SDF → DFW Jun 14, 21:30 UTCJun 14, 22:26 UTC56m
2026-06-14 ENY3884 SDF → DFW Jun 14, 19:50 UTCJun 14, 20:05 UTC15m
2026-06-14 ENY3338 MSY → DFW Jun 14, 17:15 UTCJun 14, 17:50 UTC35m
2026-06-14 ENY3338 MSY → DFW Jun 14, 17:06 UTCJun 14, 17:45 UTC39m
2026-06-14 ENY3338 MSY → DFW Jun 14, 15:15 UTCJun 14, 15:40 UTC25m
2026-06-14 ENY3679 SDF → MIA Jun 14, 11:20 UTCJun 14, 14:05 UTC2h 45m
2026-06-14 ENY3680 - Jun 14, 03:25 UTCJun 14, 06:15 UTC2h 50m
2026-06-14 ENY3680 MIA → OKC Jun 14, 03:21 UTCJun 14, 06:17 UTC2h 56m
2026-06-13 ENY3420 DFW → MAF Jun 13, 21:25 UTCJun 13, 23:55 UTC2h 30m
2026-06-13 ENY3420 DFW → MAF Jun 13, 21:05 UTCJun 13, 23:48 UTC2h 43m
2026-06-13 ENY4317 PHX → GRB Jun 13, 17:30 UTCJun 13, 19:45 UTC2h 15m
2026-06-13 ENY4317 PHX → GRB Jun 13, 17:27 UTCJun 13, 19:57 UTC2h 30m
2026-06-13 ENY4108 DFW → XNA Jun 13, 15:35 UTCJun 13, 15:50 UTC15m
2026-06-13 ENY4108 DFW → XNA Jun 13, 15:26 UTCJun 13, 15:30 UTC4m
2026-06-13 ENY4108 DFW → XNA Jun 13, 14:15 UTCJun 13, 14:25 UTC10m
2026-06-13 ENY4148 DCA → ROC Jun 13, 11:15 UTCJun 13, 12:55 UTC1h 40m
2026-06-13 ENY4148 DCA → ROC Jun 13, 11:10 UTCJun 13, 12:44 UTC1h 34m
2026-06-13 ENY3581 PIA → ORD Jun 13, 02:35 UTCJun 13, 04:15 UTC1h 39m

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 N210NN page for operator, model, and routing details .

Mode-S A1BABB frequently asked

What is Mode-S code A1BABB?
A1BABB is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N210NN.
Where is Mode-S A1BABB registered?
Mode-S code A1BABB 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 A1BABB broadcasting right now?
No active broadcast right now. Last signal was 24d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1BABB, octal 50335273, decimal 10,599,099.
What flights does A1BABB operate?
Mode-S A1BABB has broadcast 20 distinct callsigns, including ENY3611, ENY3368, ENY4166, ENY3652, ENY3639.