Apparatus

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sensors Mode-S transponder

AC22C5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N881NN · BOEING 737-800 · operated by BANK OF UTAH TRUSTEE

Hex
AC22C5
Octal
53021305
Decimal
11,281,093
Country
US
Tail
N881NN
Type
B738
Transponder active on ground
Flights observed
531
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:10 UTC

Last known position

Most recent position reported by Mode-S AC22C5.

Country allocation

The ICAO 24-bit address AC22C5 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
AAL2523 - 7 2026-07-17
AAL650 American Airlines 6 2026-04-15
AAL1927 American Airlines 6 2026-05-17
AAL1051 - 6 2026-06-29
AAL2968 American Airlines 5 2026-07-20
AAL2838 - 5 2026-06-21
AAL2515 American Airlines 5 2026-06-04
AAL1500 - 5 2026-06-28
AAL2582 - 4 2026-06-19
AAL2413 - 4 2026-07-03
AAL2037 - 4 2026-07-04
AAL1830 American Airlines 4 2026-07-26
AAL1695 - 4 2026-07-15
AAL922 American Airlines 3 2026-07-23
AAL578 - 3 2026-06-26
AAL395 American Airlines 3 2026-05-15
AAL3235 - 3 2026-06-16
AAL3161 American Airlines 3 2026-07-20
AAL3126 - 3 2026-07-07
AAL3051 American Airlines 3 2026-05-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL1164 LGA → STL Jul 26, 18:35 UTCJul 26, 20:05 UTC1h 30m
2026-07-26 AAL1830 DFW → SEA Jul 26, 14:50 UTCJul 26, 16:05 UTC1h 15m
2026-07-26 AAL1830 DFW → SEA Jul 26, 14:46 UTCJul 26, 16:45 UTC1h 59m
2026-07-26 AAL2600 BOS → DFW Jul 26, 02:30 UTCJul 26, 04:10 UTC1h 40m
2026-07-25 AAL752 CLT → PWM Jul 25, 22:20 UTCJul 26, 00:26 UTC2h 6m
2026-07-25 AAL752 CLT → PWM Jul 25, 22:25 UTCJul 26, 00:15 UTC1h 50m
2026-07-25 AAL1478 ORD → PHL Jul 25, 18:45 UTCJul 25, 20:25 UTC1h 40m
2026-07-25 AAL1290 PHL → ORD Jul 25, 15:30 UTCJul 25, 17:30 UTC2h 0m
2026-07-25 AAL1290 PHL → ORD Jul 25, 15:26 UTCJul 25, 17:24 UTC1h 58m
2026-07-25 AAL1561 EWR → DFW Jul 25, 11:20 UTCJul 25, 13:20 UTC2h 0m
2026-07-25 AAL981 LAX → PHL Jul 25, 01:35 UTCJul 25, 03:40 UTC2h 5m
2026-07-25 AAL981 LAX → PHL Jul 25, 01:31 UTCJul 25, 03:35 UTC2h 4m
2026-07-24 AAL2140 LGA → DCA Jul 24, 20:00 UTCJul 24, 23:20 UTC3h 20m
2026-07-24 AAL2140 LGA → DCA Jul 24, 15:40 UTCJul 24, 18:35 UTC2h 55m
2026-07-24 AAL1825 SYR → CLT Jul 24, 12:30 UTCJul 24, 13:40 UTC1h 10m
2026-07-24 AAL3262 ORD → CLT Jul 24, 02:20 UTCJul 24, 03:25 UTC1h 5m
2026-07-23 AAL922 DFW → PHL Jul 23, 23:30 UTCJul 24, 00:40 UTC1h 10m
2026-07-23 AAL922 DFW → PHL Jul 23, 23:28 UTCJul 24, 00:39 UTC1h 11m
2026-07-23 AAL922 DFW → PHL Jul 23, 21:10 UTCJul 23, 22:20 UTC1h 10m
2026-07-23 AAL2341 ORD → MIA Jul 23, 17:06 UTCJul 23, 19:07 UTC2h 1m
2026-07-23 AAL1236 EWR → DFW Jul 23, 14:00 UTCJul 23, 15:20 UTC1h 20m
2026-07-23 AAL320 LGA → CLT Jul 23, 08:10 UTCJul 23, 12:00 UTC3h 50m
2026-07-23 AAL467 DFW → SJO Jul 23, 03:10 UTCJul 23, 06:55 UTC3h 45m
2026-07-22 AAL380 MIA → EWR Jul 22, 20:10 UTCJul 22, 23:00 UTC2h 50m
2026-07-22 AAL937 BOS → LGA Jul 22, 15:45 UTCJul 22, 18:30 UTC2h 45m
2026-07-22 AAL2193 TUS → DFW Jul 22, 12:10 UTCJul 22, 14:00 UTC1h 50m
2026-07-22 AAL1109 ORD → DFW Jul 22, 04:25 UTCJul 22, 05:25 UTC1h 0m
2026-07-22 AAL1109 ORD → DFW Jul 22, 04:21 UTCJul 22, 06:07 UTC1h 46m
2026-07-22 AAL1945 PHL → CLE Jul 22, 00:20 UTCJul 22, 02:00 UTC1h 40m
2026-07-21 AAL1945 PHL → CLE Jul 21, 21:25 UTCJul 21, 23:10 UTC1h 45m
2026-07-21 AAL1955 SAN → DFW Jul 21, 17:45 UTCJul 21, 19:30 UTC1h 45m
2026-07-21 AAL1955 SAN → DFW Jul 21, 14:40 UTCJul 21, 16:30 UTC1h 50m
2026-07-21 AAL955 LGA → DFW Jul 21, 12:00 UTCJul 21, 13:10 UTC1h 10m
2026-07-21 AAL1732 - Jul 21, 01:55 UTCJul 21, 03:45 UTC1h 50m
2026-07-20 AAL2046 - Jul 20, 22:05 UTCJul 20, 23:45 UTC1h 40m
2026-07-20 AAL2046 - Jul 20, 18:55 UTCJul 20, 20:45 UTC1h 50m
2026-07-20 AAL3161 DFW → GJT Jul 20, 15:32 UTCJul 20, 17:19 UTC1h 47m
2026-07-20 AAL3161 DFW → GJT Jul 20, 15:35 UTCJul 20, 17:20 UTC1h 45m
2026-07-20 AAL2968 CLT → BOS Jul 20, 12:05 UTCJul 20, 13:55 UTC1h 50m
2026-07-20 AAL2968 CLT → BOS Jul 20, 12:05 UTCJul 20, 13:54 UTC1h 49m
2026-07-19 AAL2718 CLT → EWR Jul 19, 23:35 UTCJul 20, 03:15 UTC3h 40m
2026-07-19 AAL2718 CLT → EWR Jul 19, 17:40 UTCJul 19, 21:00 UTC3h 20m
2026-07-19 AAL1734 DTW → DFW Jul 19, 01:00 UTCJul 19, 02:55 UTC1h 55m
2026-07-19 AAL1734 DTW → DFW Jul 19, 00:56 UTCJul 19, 02:54 UTC1h 58m
2026-07-18 AAL1734 DTW → DFW Jul 18, 21:15 UTCJul 18, 23:25 UTC2h 10m
2026-07-18 AAL359 - Jul 18, 15:20 UTCJul 18, 19:00 UTC3h 40m
2026-07-18 AAL1620 ORD → SFO Jul 18, 00:29 UTCJul 18, 04:30 UTC4h 1m
2026-07-17 AAL2523 SEA → ORD Jul 17, 17:50 UTCJul 17, 21:30 UTC3h 40m
2026-07-17 AAL2523 ORD → SEA Jul 17, 12:04 UTCJul 17, 15:49 UTC3h 45m
2026-07-17 AAL1193 - Jul 17, 04:39 UTCJul 17, 06:25 UTC1h 45m

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 N881NN page for operator, model, and routing details .

Mode-S AC22C5 frequently asked

What is Mode-S code AC22C5?
AC22C5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N881NN.
Where is Mode-S AC22C5 registered?
Mode-S code AC22C5 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 AC22C5 broadcasting right now?
Mode-S AC22C5 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC22C5, octal 53021305, decimal 11,281,093.
What flights does AC22C5 operate?
Mode-S AC22C5 has broadcast 20 distinct callsigns, including AAL2523, AAL650, AAL1927, AAL1051, AAL2968.