Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AC142E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N878BG · BOEING 787-8 Dreamliner · operated by WILMINGTON TRUST CO TRUSTEE

Hex
AC142E
Octal
53012056
Decimal
11,277,358
Country
US
Tail
N878BG
Type
B788
No current signal · last broadcast Jul 26, 15:40 UTC
Flights observed
259
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 15:40 UTC

Last known position

Most recent position reported by Mode-S AC142E.

Country allocation

The ICAO 24-bit address AC142E 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
AAL912 - 11 2026-07-15
AAL71 - 11 2026-07-02
AAL70 - 11 2026-07-01
AAL115 American Airlines 10 2026-06-30
AAL207 American Airlines 9 2026-07-26
AAL957 - 8 2026-07-14
AAL755 - 8 2026-06-27
AAL741 American Airlines 8 2026-07-24
AAL6 - 7 2026-07-01
AAL5 American Airlines 7 2026-06-29
AAL126 American Airlines 7 2026-07-24
AAL715 American Airlines 6 2026-07-03
AAL97 - 5 2026-07-19
AAL96 American Airlines 5 2026-07-19
AAL906 - 5 2026-06-25
AAL780 - 5 2026-07-20
AAL744 American Airlines 5 2026-07-25
AAL206 American Airlines 5 2026-06-12
AAL204 - 5 2026-07-09
AAL102 - 5 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL207 LAX → ELP Jul 26, 13:29 UTCJul 26, 23:01 UTC9h 32m
2026-07-26 AAL207 LAX → ELP Jul 26, 13:30 UTCJul 26, 15:30 UTC2h 0m
2026-07-26 AAL298 PHL → MXP Jul 26, 00:25 UTCJul 26, 07:30 UTC7h 6m
2026-07-26 AAL298 PHL → MXP Jul 26, 00:22 UTCJul 26, 07:45 UTC7h 23m
2026-07-25 AAL745 DFW → MSY Jul 25, 13:55 UTCJul 25, 21:50 UTC7h 55m
2026-07-25 AAL744 BGR → DCA Jul 25, 02:05 UTCJul 25, 08:55 UTC6h 50m
2026-07-25 AAL744 BGR → DCA Jul 25, 02:02 UTCJul 25, 08:53 UTC6h 51m
2026-07-24 AAL741 MAD → PHL Jul 24, 14:50 UTCJul 24, 15:30 UTC40m
2026-07-24 AAL741 MAD → PHL Jul 24, 14:49 UTCJul 24, 21:55 UTC7h 6m
2026-07-24 AAL126 ORD → EWR Jul 24, 05:05 UTCJul 24, 12:30 UTC7h 25m
2026-07-23 AAL125 LHR → BOS Jul 23, 11:55 UTCJul 23, 20:05 UTC8h 10m
2026-07-23 AAL125 LHR → BOS Jul 23, 11:50 UTCJul 23, 20:00 UTC8h 10m
2026-07-23 AAL740 PHL → MAD Jul 23, 00:30 UTCJul 23, 07:10 UTC6h 40m
2026-07-22 AAL745 DFW → MSY Jul 22, 13:35 UTCJul 22, 21:35 UTC8h 0m
2026-07-22 AAL744 BGR → DCA Jul 22, 02:15 UTCJul 22, 04:05 UTC1h 50m
2026-07-21 AAL741 - Jul 21, 14:00 UTCJul 21, 21:15 UTC7h 15m
2026-07-21 AAL126 ORD → EWR Jul 21, 04:05 UTCJul 21, 05:30 UTC1h 25m
2026-07-21 AAL126 ORD → EWR Jul 21, 04:04 UTCJul 21, 11:41 UTC7h 37m
2026-07-20 AAL181 ORD → MCO Jul 20, 15:00 UTCJul 21, 00:45 UTC9h 44m
2026-07-20 AAL780 PHL → NAP Jul 20, 02:46 UTCJul 20, 11:15 UTC8h 29m
2026-07-20 AAL780 - Jul 20, 02:50 UTCJul 20, 11:25 UTC8h 35m
2026-07-19 AAL97 BUD → PHL Jul 19, 11:30 UTCJul 19, 20:30 UTC9h 0m
2026-07-19 AAL96 BZN → DFW Jul 19, 00:40 UTCJul 19, 09:10 UTC8h 30m
2026-07-18 AAL96 PHL → PHL Jul 18, 23:40 UTCJul 18, 23:45 UTC5m
2026-07-18 AAL97 BUD → PHL Jul 18, 08:23 UTCJul 18, 17:08 UTC8h 45m
2026-07-18 AAL97 BUD → PHL Jul 18, 08:25 UTCJul 18, 17:10 UTC8h 45m
2026-07-17 AAL96 PHL → BUD Jul 17, 21:50 UTCJul 18, 05:45 UTC7h 56m
2026-07-17 AAL93 ZRH → PHL Jul 17, 16:44 UTCJul 17, 18:19 UTC1h 35m
2026-07-17 AAL93 ZRH → PHL Jul 17, 10:25 UTCJul 17, 16:40 UTC6h 15m
2026-07-17 AAL92 - Jul 17, 00:55 UTCJul 17, 08:04 UTC7h 10m
2026-07-17 AAL92 PHL → PHL Jul 17, 00:10 UTCJul 17, 00:14 UTC5m
2026-07-16 AAL745 CPH → PHL Jul 16, 13:45 UTCJul 16, 21:30 UTC7h 45m
2026-07-16 AAL745 CPH → PHL Jul 16, 13:41 UTCJul 16, 21:25 UTC7h 44m
2026-07-16 AAL744 - Jul 16, 03:30 UTCJul 16, 05:05 UTC1h 35m
2026-07-16 AAL744 PHL → CPH Jul 16, 03:29 UTCJul 16, 10:51 UTC7h 22m
2026-07-15 AAL1871 - Jul 15, 21:00 UTCJul 15, 23:20 UTC2h 20m
2026-07-15 AAL1871 MIA → PHL Jul 15, 20:56 UTCJul 15, 23:14 UTC2h 18m
2026-07-15 AAL912 - Jul 15, 04:05 UTCJul 15, 09:00 UTC4h 55m
2026-07-14 AAL957 - Jul 14, 03:15 UTCJul 14, 08:05 UTC4h 50m
2026-07-13 AAL912 - Jul 13, 04:10 UTCJul 13, 09:10 UTC5h 0m
2026-07-12 AAL957 - Jul 12, 03:35 UTCJul 12, 08:20 UTC4h 45m
2026-07-11 AAL3306 PHL → MIA Jul 11, 20:45 UTCJul 11, 22:50 UTC2h 5m
2026-07-11 AAL3306 PHL → MIA Jul 11, 20:42 UTCJul 11, 22:51 UTC2h 9m
2026-07-11 AAL97 BUD → PHL Jul 11, 08:45 UTCJul 11, 17:40 UTC8h 55m
2026-07-11 AAL97 BUD → PHL Jul 11, 08:41 UTCJul 11, 17:39 UTC8h 58m
2026-07-10 AAL96 PHL → BUD Jul 10, 21:58 UTCJul 11, 05:44 UTC7h 46m
2026-07-10 AAL96 PHL → BUD Jul 10, 22:00 UTCJul 11, 05:45 UTC7h 45m
2026-07-10 AAL203 - Jul 10, 08:30 UTCJul 10, 16:05 UTC7h 35m
2026-07-10 AAL203 AMS → PHL Jul 10, 08:26 UTCJul 10, 16:01 UTC7h 35m
2026-07-09 AAL204 - Jul 9, 23:10 UTCJul 10, 05:30 UTC6h 20m

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 N878BG page for operator, model, and routing details .

Mode-S AC142E frequently asked

What is Mode-S code AC142E?
AC142E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N878BG.
Where is Mode-S AC142E registered?
Mode-S code AC142E 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 AC142E broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 15:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC142E, octal 53012056, decimal 11,277,358.
What flights does AC142E operate?
Mode-S AC142E has broadcast 20 distinct callsigns, including AAL912, AAL71, AAL70, AAL115, AAL207.