Apparatus

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sensors Mode-S transponder

A94BFC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N69885 · BOEING 737-900 · operated by UNITED AIRLINES INC

Hex
A94BFC
Octal
52245774
Decimal
11,095,036
Country
US
Tail
N69885
Type
B739
No current signal · last broadcast 1h ago
Flights observed
417
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A94BFC.

Country allocation

The ICAO 24-bit address A94BFC 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
UAL1252 - 7 2026-07-07
UAL1554 United Airlines 5 2026-07-01
UAL1196 United Airlines 5 2026-06-29
UAL2488 - 4 2026-07-09
UAL2370 United Airlines 4 2026-07-03
UAL2277 - 4 2026-06-30
UAL1992 United Airlines 4 2026-05-17
UAL1795 - 4 2026-07-11
UAL1748 - 4 2026-07-13
UAL1689 - 4 2026-07-07
UAL1154 - 4 2026-06-29
UAL1128 United Airlines 4 2026-04-22
UAL1082 United Airlines 4 2026-05-06
UAL655 - 3 2026-06-24
UAL529 United Airlines 3 2026-05-06
UAL2801 - 3 2026-07-04
UAL2776 - 3 2026-06-27
UAL2754 United Airlines 3 2026-06-16
UAL2333 - 3 2026-06-28
UAL2331 United Airlines 3 2026-05-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 UAL516 - Jul 13, 23:35 UTCJul 14, 01:00 UTC1h 25m
2026-07-13 UAL1748 PHX → ORD Jul 13, 18:25 UTCJul 13, 21:25 UTC3h 0m
2026-07-13 UAL659 LAX → PHX Jul 13, 15:55 UTCJul 13, 16:55 UTC1h 0m
2026-07-13 UAL659 LAX → PHX Jul 13, 15:59 UTCJul 13, 16:56 UTC57m
2026-07-13 UAL2110 - Jul 13, 11:20 UTCJul 13, 14:05 UTC2h 45m
2026-07-13 UAL2110 IAH → LAX Jul 13, 11:16 UTCJul 13, 14:01 UTC2h 45m
2026-07-13 UAL1986 - Jul 13, 03:01 UTCJul 13, 05:31 UTC2h 30m
2026-07-12 UAL444 - Jul 12, 20:30 UTCJul 13, 01:05 UTC4h 35m
2026-07-12 UAL2177 SFO → SAN Jul 12, 17:31 UTCJul 12, 18:38 UTC1h 7m
2026-07-12 UAL2177 SFO → SAN Jul 12, 17:25 UTCJul 12, 18:40 UTC1h 15m
2026-07-12 UAL2274 - Jul 12, 14:40 UTCJul 12, 15:45 UTC1h 5m
2026-07-11 UAL2751 - Jul 11, 22:20 UTCJul 12, 01:05 UTC2h 45m
2026-07-11 UAL1795 - Jul 11, 20:10 UTCJul 11, 20:35 UTC25m
2026-07-11 UAL1795 - Jul 11, 17:15 UTCJul 11, 20:35 UTC3h 20m
2026-07-11 UAL1795 MSP → IAH Jul 11, 17:18 UTCJul 11, 19:53 UTC2h 35m
2026-07-11 UAL2469 - Jul 11, 13:15 UTCJul 11, 15:30 UTC2h 15m
2026-07-11 UAL2419 - Jul 11, 04:25 UTCJul 11, 06:15 UTC1h 50m
2026-07-11 UAL624 PHX → DEN Jul 11, 01:25 UTCJul 11, 02:50 UTC1h 25m
2026-07-10 UAL455 ORD → PHX Jul 10, 19:00 UTCJul 10, 22:05 UTC3h 6m
2026-07-10 UAL2171 - Jul 10, 13:20 UTCJul 10, 16:35 UTC3h 15m
2026-07-10 UAL2171 ONT → ORD Jul 10, 13:24 UTCJul 10, 16:24 UTC3h 0m
2026-07-10 UAL658 - Jul 10, 02:05 UTCJul 10, 05:55 UTC3h 50m
2026-07-09 UAL403 - Jul 9, 21:00 UTCJul 9, 23:40 UTC2h 40m
2026-07-09 UAL403 FLL → ORD Jul 9, 20:57 UTCJul 9, 23:28 UTC2h 31m
2026-07-09 UAL279 - Jul 9, 16:30 UTCJul 9, 19:05 UTC2h 35m
2026-07-09 UAL2488 EWR → ORD Jul 9, 12:18 UTCJul 9, 13:59 UTC1h 41m
2026-07-09 UAL2488 - Jul 9, 12:30 UTCJul 9, 14:15 UTC1h 45m
2026-07-08 UAL733 - Jul 8, 20:00 UTCJul 9, 00:40 UTC4h 40m
2026-07-08 UAL1292 ORD → YVR Jul 8, 13:55 UTCJul 8, 17:50 UTC3h 55m
2026-07-07 UAL2747 - Jul 7, 22:30 UTCJul 8, 00:10 UTC1h 40m
2026-07-07 UAL2226 ORD → BUF Jul 7, 19:51 UTCJul 7, 20:57 UTC1h 6m
2026-07-07 UAL2226 ORD → BUF Jul 7, 19:55 UTCJul 7, 20:55 UTC1h 0m
2026-07-07 UAL1252 IAD → ORD Jul 7, 14:45 UTCJul 7, 16:20 UTC1h 35m
2026-07-07 UAL1689 ORD → IAD Jul 7, 11:45 UTCJul 7, 13:10 UTC1h 25m
2026-07-06 UAL352 DEN → ORD Jul 6, 23:15 UTCJul 7, 01:25 UTC2h 10m
2026-07-06 UAL1150 - Jul 6, 18:50 UTCJul 6, 20:40 UTC1h 50m
2026-07-06 UAL1252 IAD → ORD Jul 6, 15:50 UTCJul 6, 17:25 UTC1h 35m
2026-07-06 UAL1689 - Jul 6, 11:50 UTCJul 6, 13:15 UTC1h 25m
2026-07-06 UAL1689 IAD → LAX Jul 6, 11:54 UTCJul 6, 13:20 UTC1h 26m
2026-07-06 UAL1672 LAS → ORD Jul 6, 02:15 UTCJul 6, 05:20 UTC3h 5m
2026-07-05 UAL1875 ORD → LAS Jul 5, 21:30 UTCJul 6, 00:35 UTC3h 5m
2026-07-05 UAL3907 - Jul 5, 14:45 UTCJul 5, 16:50 UTC2h 5m
2026-07-04 UAL254 ORD → BOS Jul 4, 19:20 UTCJul 4, 20:55 UTC1h 35m
2026-07-04 UAL1239 ATL → ORD Jul 4, 15:55 UTCJul 4, 17:30 UTC1h 35m
2026-07-04 UAL425 ORD → ATL Jul 4, 12:35 UTCJul 4, 14:00 UTC1h 25m
2026-07-04 UAL2801 - Jul 4, 06:35 UTCJul 4, 06:40 UTC5m
2026-07-04 UAL2801 TPA → ORD Jul 4, 03:40 UTCJul 4, 06:40 UTC3h 0m
2026-07-04 UAL2801 TPA → ORD Jul 4, 03:29 UTCJul 4, 06:20 UTC2h 51m
2026-07-04 UAL1057 ORD → TPA Jul 4, 00:08 UTCJul 4, 02:25 UTC2h 17m
2026-07-04 UAL1057 ORD → TPA Jul 4, 00:05 UTCJul 4, 02:30 UTC2h 25m

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 N69885 page for operator, model, and routing details .

Mode-S A94BFC frequently asked

What is Mode-S code A94BFC?
A94BFC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N69885.
Where is Mode-S A94BFC registered?
Mode-S code A94BFC 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 A94BFC broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A94BFC, octal 52245774, decimal 11,095,036.
What flights does A94BFC operate?
Mode-S A94BFC has broadcast 20 distinct callsigns, including UAL1252, UAL1554, UAL1196, UAL2488, UAL2370.