Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A7F4E7

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N61101 · BOEING 787-9 Dreamliner · operated by UNITED AIRLINES INC.

Hex
A7F4E7
Octal
51772347
Decimal
11,007,207
Country
US
Tail
N61101
Type
B789
No current signal · last broadcast Jul 26, 21:45 UTC
Flights observed
119
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:45 UTC

Last known position

Most recent position reported by Mode-S A7F4E7.

Country allocation

The ICAO 24-bit address A7F4E7 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
UAL1 United Airlines 11 2026-07-24
UAL930 United Airlines 8 2026-07-26
UAL1849 United Airlines 8 2026-07-09
UAL1757 - 8 2026-07-09
UAL939 United Airlines 6 2026-07-26
UAL901 United Airlines 5 2026-05-29
UAL2 United Airlines 5 2026-07-25
UAL900 United Airlines 4 2026-05-30
UAL4199 United Airlines 4 2026-05-16
UAL4201 United Airlines 3 2026-05-02
UAL3940 - 3 2026-07-04
UAL1604 - 3 2026-07-14
UAL1495 - 3 2026-07-16
UAL8140 - 2 2026-07-12
UAL4197 United Airlines 2 2026-04-16
UAL3968 United Airlines 2 2026-04-25
UAL3966 United Airlines 2 2026-06-07
UAL3962 United Airlines 2 2026-05-10
UAL3879 United Airlines 2 2026-06-20
UAL2633 - 2 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UAL939 LHR → SFO Jul 26, 15:40 UTCJul 26, 21:45 UTC6h 5m
2026-07-26 UAL930 SFO → LHR Jul 26, 03:45 UTCJul 26, 12:45 UTC9h 1m
2026-07-25 UAL2 SIN → SFO Jul 25, 02:25 UTCJul 25, 16:20 UTC13h 55m
2026-07-25 UAL2 SIN → SFO Jul 25, 01:05 UTCJul 25, 01:15 UTC10m
2026-07-25 UAL2 SIN → SFO Jul 25, 01:16 UTCJul 25, 16:13 UTC14h 57m
2026-07-24 UAL1 SFO → SIN Jul 24, 06:50 UTCJul 24, 20:45 UTC13h 55m
2026-07-23 UAL939 LHR → SFO Jul 23, 15:50 UTCJul 24, 02:15 UTC10h 25m
2026-07-23 UAL939 LHR → SFO Jul 23, 15:49 UTCJul 24, 02:10 UTC10h 21m
2026-07-23 UAL930 SFO → LHR Jul 23, 03:10 UTCJul 23, 12:45 UTC9h 35m
2026-07-19 UAL949 - Jul 19, 12:30 UTCJul 19, 22:50 UTC10h 20m
2026-07-19 UAL948 SFO → LHR Jul 19, 00:20 UTCJul 19, 09:35 UTC9h 15m
2026-07-18 UAL2115 - Jul 18, 10:35 UTCJul 18, 15:55 UTC5h 20m
2026-07-17 UAL2248 BOS → EWR Jul 17, 23:35 UTCJul 18, 04:15 UTC4h 41m
2026-07-16 UAL1495 - Jul 16, 02:10 UTCJul 16, 06:15 UTC4h 5m
2026-07-15 UAL2317 SFO → ORD Jul 15, 19:25 UTCJul 15, 22:55 UTC3h 30m
2026-07-15 UAL246 - Jul 15, 11:30 UTCJul 15, 15:00 UTC3h 30m
2026-07-15 UAL1375 SFO → ORD Jul 15, 01:45 UTCJul 15, 05:25 UTC3h 40m
2026-07-14 UAL2633 - Jul 14, 22:05 UTCJul 15, 00:10 UTC2h 4m
2026-07-14 UAL1604 SFO → DEN Jul 14, 18:15 UTCJul 14, 20:15 UTC2h 0m
2026-07-14 UAL246 - Jul 14, 11:25 UTCJul 14, 14:55 UTC3h 30m
2026-07-14 UAL1375 SFO → ORD Jul 14, 02:20 UTCJul 14, 05:50 UTC3h 30m
2026-07-13 UAL2633 - Jul 13, 22:05 UTCJul 14, 00:10 UTC2h 5m
2026-07-13 UAL1604 SFO → DEN Jul 13, 18:06 UTCJul 13, 20:07 UTC2h 1m
2026-07-13 UAL1604 SFO → DEN Jul 13, 18:10 UTCJul 13, 20:10 UTC2h 0m
2026-07-13 UAL1495 - Jul 13, 02:35 UTCJul 13, 06:10 UTC3h 35m
2026-07-13 UAL1495 ORD → SFO Jul 13, 02:28 UTCJul 13, 06:05 UTC3h 37m
2026-07-12 UAL2317 SFO → ORD Jul 12, 19:35 UTCJul 12, 23:05 UTC3h 30m
2026-07-12 UAL1116 - Jul 12, 13:55 UTCJul 12, 17:30 UTC3h 35m
2026-07-12 UAL2278 SFO → ORD Jul 12, 08:25 UTCJul 12, 11:50 UTC3h 25m
2026-07-12 UAL8140 - Jul 12, 01:25 UTCJul 12, 06:30 UTC5h 5m
2026-07-12 UAL8140 EWR → SFO Jul 12, 00:05 UTCJul 12, 06:33 UTC6h 28m
2026-07-11 UAL1149 SFO → EWR Jul 11, 14:20 UTCJul 11, 19:00 UTC4h 40m
2026-07-11 UAL1558 EWR → SFO Jul 11, 00:38 UTCJul 11, 07:10 UTC6h 32m
2026-07-11 UAL1558 - Jul 11, 01:35 UTCJul 11, 07:15 UTC5h 40m
2026-07-10 UAL1149 SFO → EWR Jul 10, 14:25 UTCJul 10, 18:45 UTC4h 20m
2026-07-09 UAL1757 - Jul 9, 23:50 UTCJul 10, 05:10 UTC5h 20m
2026-07-09 UAL1849 MCO → EWR Jul 9, 15:55 UTCJul 9, 20:45 UTC4h 50m
2026-07-08 UAL1757 IAD → SFO Jul 8, 22:40 UTCJul 9, 03:40 UTC5h 0m
2026-07-08 UAL1849 MCO → EWR Jul 8, 15:30 UTCJul 8, 19:55 UTC4h 25m
2026-07-07 UAL1757 - Jul 7, 23:05 UTCJul 8, 04:20 UTC5h 15m
2026-07-07 UAL1849 MCO → EWR Jul 7, 15:35 UTCJul 7, 20:10 UTC4h 35m
2026-07-06 UAL1757 IAD → SFO Jul 6, 23:25 UTCJul 7, 04:15 UTC4h 50m
2026-07-06 UAL1849 MCO → EWR Jul 6, 15:45 UTCJul 6, 20:20 UTC4h 35m
2026-07-06 UAL1757 - Jul 6, 03:25 UTCJul 6, 08:30 UTC5h 5m
2026-07-06 UAL1757 IAD → SFO Jul 6, 01:43 UTCJul 6, 08:29 UTC6h 46m
2026-07-05 UAL1849 MCO → EWR Jul 5, 15:30 UTCJul 5, 20:05 UTC4h 35m
2026-07-04 UAL3940 - Jul 4, 18:20 UTCJul 4, 21:00 UTC2h 40m
2026-07-04 UAL3940 LHR → SFO Jul 4, 18:25 UTCJul 5, 04:55 UTC10h 30m
2026-07-04 UAL3940 LHR → SFO Jul 4, 18:25 UTCJul 5, 04:50 UTC10h 25m
2026-07-03 UAL930 SFO → LHR Jul 3, 03:20 UTCJul 3, 12:50 UTC9h 30m

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 N61101 page for operator, model, and routing details .

Mode-S A7F4E7 frequently asked

What is Mode-S code A7F4E7?
A7F4E7 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N61101.
Where is Mode-S A7F4E7 registered?
Mode-S code A7F4E7 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 A7F4E7 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 A7F4E7, octal 51772347, decimal 11,007,207.
What flights does A7F4E7 operate?
Mode-S A7F4E7 has broadcast 20 distinct callsigns, including UAL1, UAL930, UAL1849, UAL1757, UAL939.