Apparatus

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sensors Mode-S transponder

AC97E4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N910NN · BOEING 737-800 · operated by UMB BANK NA TRUSTEE

Hex
AC97E4
Octal
53113744
Decimal
11,311,076
Country
US
Tail
N910NN
Type
B738
No current signal · last broadcast Jul 26, 23:00 UTC
Flights observed
553
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 23:00 UTC

Last known position

Most recent position reported by Mode-S AC97E4.

Country allocation

The ICAO 24-bit address AC97E4 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
AAL2039 - 8 2026-06-14
AAL1296 American Airlines 8 2026-05-08
AAL2800 American Airlines 5 2026-04-27
AAL2491 American Airlines 5 2026-05-06
AAL2280 American Airlines 5 2026-07-23
AAL1894 American Airlines 5 2026-04-16
AAL1812 American Airlines 5 2026-05-09
AAL1607 - 5 2026-07-15
AAL481 - 4 2026-07-10
AAL462 - 4 2026-06-14
AAL2986 American Airlines 4 2026-04-15
AAL2941 - 4 2026-04-13
AAL2644 American Airlines 4 2026-04-27
AAL2567 - 4 2026-07-18
AAL2456 American Airlines 4 2026-04-17
AAL2452 - 4 2026-07-14
AAL2250 - 4 2026-07-01
AAL2064 American Airlines 4 2026-06-09
AAL1598 American Airlines 4 2026-07-18
AAL1498 - 4 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL1522 JAX → CLT Jul 26, 21:30 UTCJul 26, 23:00 UTC1h 30m
2026-07-26 AAL3264 MCO → PHL Jul 26, 17:15 UTCJul 26, 19:00 UTC1h 45m
2026-07-26 AAL1239 BOS → ORD Jul 26, 13:05 UTCJul 26, 15:10 UTC2h 5m
2026-07-26 AAL2682 ORD → BOS Jul 26, 01:42 UTCJul 26, 03:36 UTC1h 54m
2026-07-26 AAL2682 ORD → BOS Jul 26, 01:45 UTCJul 26, 03:40 UTC1h 55m
2026-07-25 AAL1936 ORD → PIT Jul 25, 21:45 UTCJul 25, 23:35 UTC1h 50m
2026-07-25 AAL1936 ORD → PIT Jul 25, 21:40 UTCJul 25, 23:28 UTC1h 48m
2026-07-25 AAL1936 ORD → PIT Jul 25, 18:25 UTCJul 25, 20:25 UTC2h 0m
2026-07-25 AAL1041 PHL → LAX Jul 25, 14:50 UTCJul 25, 16:30 UTC1h 40m
2026-07-25 AAL1041 PHL → LAX Jul 25, 14:48 UTCJul 25, 16:29 UTC1h 41m
2026-07-25 AAL1115 RDU → PHL Jul 25, 12:05 UTCJul 25, 12:55 UTC50m
2026-07-25 AAL1852 BDL → ORD Jul 25, 05:35 UTCJul 25, 10:05 UTC4h 30m
2026-07-24 AAL1437 MIA → LGA Jul 24, 22:35 UTCJul 25, 02:15 UTC3h 40m
2026-07-24 AAL1915 RIC → DFW Jul 24, 18:40 UTCJul 24, 20:50 UTC2h 10m
2026-07-24 AAL1915 RIC → DFW Jul 24, 18:39 UTCJul 24, 20:45 UTC2h 6m
2026-07-24 AAL1915 RIC → DFW Jul 24, 15:10 UTCJul 24, 17:10 UTC2h 0m
2026-07-24 AAL803 DCA → DFW Jul 24, 10:30 UTCJul 24, 13:00 UTC2h 30m
2026-07-24 AAL2571 PHL → MIA Jul 24, 00:35 UTCJul 24, 02:50 UTC2h 15m
2026-07-23 AAL2280 MIA → SFO Jul 23, 20:45 UTCJul 23, 23:00 UTC2h 15m
2026-07-23 AAL2280 MIA → SFO Jul 23, 16:50 UTCJul 23, 19:35 UTC2h 45m
2026-07-23 AAL2561 RSW → ORD Jul 23, 12:15 UTCJul 23, 15:15 UTC3h 0m
2026-07-23 AAL3144 ORD → IAH Jul 23, 02:40 UTCJul 23, 04:30 UTC1h 50m
2026-07-23 AAL3144 ORD → IAH Jul 23, 02:35 UTCJul 23, 04:29 UTC1h 54m
2026-07-22 AAL814 LAX → PHL Jul 22, 22:05 UTCJul 23, 00:55 UTC2h 50m
2026-07-22 AAL814 LAX → PHL Jul 22, 22:03 UTCJul 23, 00:50 UTC2h 47m
2026-07-22 AAL814 LAX → PHL Jul 22, 17:25 UTCJul 22, 20:55 UTC3h 30m
2026-07-22 AAL1633 YYC → ORD Jul 22, 13:15 UTCJul 22, 16:00 UTC2h 45m
2026-07-22 AAL1632 RDU → LGA Jul 22, 02:35 UTCJul 22, 05:25 UTC2h 50m
2026-07-21 AAL2474 MIA → LAX Jul 21, 22:15 UTCJul 22, 00:10 UTC1h 55m
2026-07-21 AAL2474 MIA → LAX Jul 21, 22:12 UTCJul 22, 00:08 UTC1h 56m
2026-07-21 AAL1120 DCA → ORD Jul 21, 19:00 UTCJul 21, 20:45 UTC1h 45m
2026-07-21 AAL2908 TPA → PHL Jul 21, 15:15 UTCJul 21, 17:25 UTC2h 10m
2026-07-21 AAL2966 PHL → CLT Jul 21, 11:25 UTCJul 21, 13:15 UTC1h 50m
2026-07-21 AAL2966 PHL → CLT Jul 21, 11:22 UTCJul 21, 13:16 UTC1h 54m
2026-07-21 AAL2120 DCA → BOS Jul 21, 01:15 UTCJul 21, 03:10 UTC1h 55m
2026-07-20 AAL898 DFW → TPA Jul 20, 15:05 UTCJul 20, 22:35 UTC7h 30m
2026-07-20 AAL756 PHL → SFO Jul 20, 10:45 UTCJul 20, 12:30 UTC1h 45m
2026-07-20 AAL756 PHL → SFO Jul 20, 10:42 UTCJul 20, 12:30 UTC1h 48m
2026-07-20 AAL2674 CLT → ORF Jul 20, 03:55 UTCJul 20, 04:45 UTC50m
2026-07-20 AAL2674 CLT → ORF Jul 20, 03:55 UTCJul 20, 04:43 UTC48m
2026-07-20 AAL1614 SFO → DFW Jul 20, 00:25 UTCJul 20, 01:45 UTC1h 20m
2026-07-20 AAL1614 SFO → DFW Jul 20, 00:24 UTCJul 20, 01:43 UTC1h 19m
2026-07-19 AAL1614 SFO → DFW Jul 19, 21:50 UTCJul 19, 23:10 UTC1h 20m
2026-07-19 AAL3280 DFW → ELP Jul 19, 19:00 UTCJul 19, 20:20 UTC1h 20m
2026-07-19 AAL324G BOS → ORD Jul 19, 15:08 UTCJul 19, 17:32 UTC2h 24m
2026-07-19 AAL324G BOS → ORD Jul 19, 15:10 UTCJul 19, 17:45 UTC2h 35m
2026-07-18 AAL2303 - Jul 18, 20:50 UTCJul 18, 22:35 UTC1h 45m
2026-07-18 AAL1598 LAX → ORD Jul 18, 15:25 UTCJul 18, 19:25 UTC4h 0m
2026-07-18 AAL1598 LAX → ORD Jul 18, 15:25 UTCJul 18, 19:10 UTC3h 45m
2026-07-18 AAL2567 - Jul 18, 04:00 UTCJul 18, 05:00 UTC1h 0m

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 N910NN page for operator, model, and routing details .

Mode-S AC97E4 frequently asked

What is Mode-S code AC97E4?
AC97E4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N910NN.
Where is Mode-S AC97E4 registered?
Mode-S code AC97E4 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 AC97E4 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 23:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC97E4, octal 53113744, decimal 11,311,076.
What flights does AC97E4 operate?
Mode-S AC97E4 has broadcast 20 distinct callsigns, including AAL2039, AAL1296, AAL2800, AAL2491, AAL2280.