N423UP
Built 1991 · registered US
This aircraftFlight activity
(137 tracking legs recorded)- Last 30 days
- 32
- Last 90 days
- 102
- Last seen
- 11 Nov 2026
- Tracked since
- 16 Jun 2026
Frequent routes: KPHL → KPHL (3) · KSLC → KPHL (3) · KBFI → KSAT (2)
- KBGR → KPHL11 Nov 2026 · 1h 22m
- … → KLRD5 Nov 2026 · 0h 35m
- … → KSJC3 Nov 2026 · 0h 25m
- … → KSJC30 Oct 2026 · 1h 33m
- KPDX → KSJC30 Oct 2026 · 1h 34m
- KSDF → KPDX30 Oct 2026 · 4h 22m
- KROA → KPDX30 Oct 2026 · 8h 38m
- KROA → KSDF30 Oct 2026 · 0h 50m
- KSDF → KROA29 Oct 2026 · 0h 45m
- … → KSDF29 Oct 2026 · 6h 43m
Showing the 10 most recent distinct flights. The total counts every raw ADS-B tracking leg, including repeat observations and sub-5-minute artifacts.
From ADS-B observations collected since May 2026. Coverage depends on ground-receiver density; gaps do not mean the aircraft did not fly.
Registration history
(1)- N423UPUSACTIVEUNITED PARCEL SERVICE CO1992 – present
Owner names are published by the issuing civil registry (FAA / CCARCS / CASA / ANAC / NZ CAA). Owner addresses present in the source are not republished here. Registered owner? Request removal
Operator history
(1)- United Parcel ServiceOperator2026 – present
Is N423UP currently active?
Registry records list N423UP's status as Active, registered in United States — a Boeing.
What is the manufacturer serial number (MSN) of N423UP?
N423UP carries manufacturer serial number (MSN) 25325, the serial assigned to this Boeing airframe when it was built.
What is the ICAO24 / Mode S code for N423UP?
N423UP's ICAO24 (Mode S) transponder code is A50894 — the hex address the Mode S transponder on this Boeing broadcasts.