Apparatus

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sensors Mode-S transponder

AB686F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N834NN · BOEING 737-800 · operated by AMERICAN AIRLINES INC

Hex
AB686F
Octal
52664157
Decimal
11,233,391
Country
US
Tail
N834NN
Type
B738
No current signal · last broadcast Jul 26, 21:45 UTC
Flights observed
546
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:45 UTC

Last known position

Most recent position reported by Mode-S AB686F.

Country allocation

The ICAO 24-bit address AB686F 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
AAL814 - 6 2026-07-03
AAL400 - 5 2026-06-27
AAL2735 American Airlines 5 2026-05-26
AAL2660 American Airlines 5 2026-04-26
AAL620 American Airlines 4 2026-04-15
AAL392 - 4 2026-06-12
AAL3069 American Airlines 4 2026-04-16
AAL2833 - 4 2026-06-26
AAL2336 - 4 2026-04-14
AAL2286 American Airlines 4 2026-04-28
AAL2122 American Airlines 4 2026-05-24
AAL1851 American Airlines 4 2026-04-17
AAL1408 - 4 2026-07-10
AAL482 American Airlines 3 2026-04-26
AAL394 American Airlines 3 2026-06-03
AAL366 American Airlines 3 2026-04-13
AAL3051 American Airlines 3 2026-04-19
AAL2878 - 3 2026-07-16
AAL2877 American Airlines 3 2026-04-14
AAL2862 American Airlines 3 2026-04-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL1682 DCA → ORD Jul 26, 20:20 UTCJul 26, 21:45 UTC1h 25m
2026-07-26 AAL2885 CLT → MSP Jul 26, 17:39 UTCJul 26, 18:46 UTC1h 7m
2026-07-26 AAL2885 CLT → MSP Jul 26, 15:05 UTCJul 26, 16:15 UTC1h 10m
2026-07-26 AAL475 LAX → ORD Jul 26, 10:50 UTCJul 26, 13:45 UTC2h 55m
2026-07-26 AAL1357 DCA → MSY Jul 26, 01:50 UTCJul 26, 04:20 UTC2h 30m
2026-07-25 AAL3148 SLC → CLT Jul 25, 22:05 UTCJul 26, 00:30 UTC2h 25m
2026-07-25 AAL2080 ORD → CLT Jul 25, 19:05 UTCJul 25, 20:35 UTC1h 30m
2026-07-25 AAL3161 DFW → GJT Jul 25, 15:31 UTCJul 25, 17:20 UTC1h 49m
2026-07-25 AAL3161 DFW → GJT Jul 25, 15:35 UTCJul 25, 17:30 UTC1h 55m
2026-07-25 AAL2968 CLT → BOS Jul 25, 12:05 UTCJul 25, 14:00 UTC1h 55m
2026-07-25 AAL2968 CLT → BOS Jul 25, 12:04 UTCJul 25, 13:58 UTC1h 54m
2026-07-25 AAL1734 DTW → DFW Jul 25, 00:20 UTCJul 25, 02:20 UTC2h 0m
2026-07-24 AAL1734 DTW → DFW Jul 24, 20:20 UTCJul 24, 22:20 UTC2h 0m
2026-07-24 AAL2925 PHL → ORD Jul 24, 17:10 UTCJul 24, 18:55 UTC1h 45m
2026-07-24 AAL471 CLT → BOS Jul 24, 14:15 UTCJul 24, 15:45 UTC1h 30m
2026-07-24 AAL471 CLT → BOS Jul 24, 14:14 UTCJul 24, 15:44 UTC1h 30m
2026-07-23 AAL1936 ORD → PIT Jul 23, 21:40 UTCJul 23, 23:35 UTC1h 55m
2026-07-23 AAL1936 ORD → PIT Jul 23, 21:39 UTCJul 23, 23:34 UTC1h 55m
2026-07-23 AAL1936 ORD → PIT Jul 23, 18:30 UTCJul 23, 20:05 UTC1h 35m
2026-07-23 AAL2908 TPA → PHL Jul 23, 15:35 UTCJul 23, 17:00 UTC1h 25m
2026-07-23 AAL1042 DFW → MIA Jul 23, 11:40 UTCJul 23, 13:35 UTC1h 55m
2026-07-23 AAL961 CVG → DFW Jul 23, 03:20 UTCJul 23, 05:30 UTC2h 10m
2026-07-23 AAL2412 DFW → ORD Jul 23, 00:40 UTCJul 23, 01:40 UTC1h 0m
2026-07-23 AAL2412 DFW → ORD Jul 23, 00:34 UTCJul 23, 01:24 UTC50m
2026-07-22 AAL2412 DFW → ORD Jul 22, 22:40 UTCJul 22, 23:25 UTC45m
2026-07-22 AAL1611 - Jul 22, 18:50 UTCJul 22, 21:05 UTC2h 15m
2026-07-22 AAL1611 - Jul 22, 15:35 UTCJul 22, 17:10 UTC1h 35m
2026-07-22 AAL1119 SLP → DFW Jul 22, 11:20 UTCJul 22, 13:40 UTC2h 20m
2026-07-22 AAL3097 DFW → SAT Jul 22, 03:15 UTCJul 22, 04:00 UTC45m
2026-07-21 AAL2353 DFW → TPA Jul 21, 21:55 UTCJul 22, 01:40 UTC3h 45m
2026-07-21 AAL2353 DFW → TPA Jul 21, 17:25 UTCJul 21, 20:30 UTC3h 5m
2026-07-21 AAL1544 - Jul 21, 12:50 UTCJul 21, 15:45 UTC2h 55m
2026-07-21 AAL1544 SMF → DFW Jul 21, 12:50 UTCJul 21, 15:49 UTC2h 59m
2026-07-21 AAL1094 CLT → BOS Jul 21, 02:50 UTCJul 21, 06:45 UTC3h 55m
2026-07-20 AAL1592 LAS → AUS Jul 20, 22:55 UTCJul 21, 01:25 UTC2h 29m
2026-07-20 AAL1592 LAS → AUS Jul 20, 22:53 UTCJul 21, 00:57 UTC2h 4m
2026-07-20 AAL3116 PHL → BOS Jul 20, 20:40 UTCJul 20, 21:40 UTC1h 0m
2026-07-20 AAL3116 PHL → BOS Jul 20, 20:37 UTCJul 20, 21:38 UTC1h 1m
2026-07-20 AAL1743 ORD → PHL Jul 20, 17:30 UTCJul 20, 19:05 UTC1h 35m
2026-07-19 AAL1717 YVR → ORD Jul 19, 22:36 UTCJul 20, 01:46 UTC3h 10m
2026-07-19 AAL1717 - Jul 19, 22:40 UTCJul 20, 01:45 UTC3h 5m
2026-07-19 AAL1717 - Jul 19, 17:05 UTCJul 19, 21:10 UTC4h 5m
2026-07-19 AAL2095 PHL → ORD Jul 19, 13:21 UTCJul 19, 15:10 UTC1h 49m
2026-07-19 AAL2095 PHL → ORD Jul 19, 13:25 UTCJul 19, 13:45 UTC20m
2026-07-19 AAL1855 ORD → LAS Jul 19, 00:30 UTCJul 19, 02:40 UTC2h 10m
2026-07-18 AAL1855 ORD → LAS Jul 18, 19:10 UTCJul 18, 21:20 UTC2h 10m
2026-07-17 AAL1971 CUN → PHL Jul 17, 16:15 UTCJul 17, 19:40 UTC3h 25m
2026-07-17 AAL1971 CUN → PHL Jul 17, 16:13 UTCJul 17, 19:38 UTC3h 25m
2026-07-17 AAL1752 PHL → CUN Jul 17, 11:20 UTCJul 17, 14:30 UTC3h 10m
2026-07-17 AAL1752 PHL → CUN Jul 17, 11:16 UTCJul 17, 14:25 UTC3h 9m

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 N834NN page for operator, model, and routing details .

Mode-S AB686F frequently asked

What is Mode-S code AB686F?
AB686F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N834NN.
Where is Mode-S AB686F registered?
Mode-S code AB686F 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 AB686F broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB686F, octal 52664157, decimal 11,233,391.
What flights does AB686F operate?
Mode-S AB686F has broadcast 20 distinct callsigns, including AAL814, AAL400, AAL2735, AAL2660, AAL620.