N428UP

Built 1992 · registered US

Flight activity

(103 tracking legs recorded)

Last 30 days: 31
Last 90 days: 97
Last seen: 12 Nov 2026
Tracked since: 16 Jul 2026

Frequent routes: KBUF → KPHL (2) · KSDF → KDFW (2) · KSDF → KSDF (2)

KBGR → KPHL12 Nov 2026 · 1h 29m
KABY → KBGR12 Nov 2026 · 7h 56m
KDFW → KABY11 Nov 2026 · 5h 38m
KDFW → KDFW11 Nov 2026 · 9h 47m
… → KDFW10 Nov 2026 · 3h 07m
KSTL → KPDX10 Nov 2026 · 8h 01m
KDEN → KBFI30 Oct 2026 · 2h 18m
… → KDEN30 Oct 2026 · 2h 20m
… → KRNO28 Oct 2026 · 11h 46m
KMSP → …27 Oct 2026 · 0h 56m

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)

N428UPUSACTIVE
UNITED PARCEL SERVICE CO
1992 – 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 Service
Operator
2026 – present

N428UP — frequently asked

Is N428UP currently active?

Registry records list N428UP's status as Active, registered in United States — a Boeing.

What is the manufacturer serial number (MSN) of N428UP?

N428UP carries manufacturer serial number (MSN) 25459, the serial assigned to this Boeing airframe when it was built.

What is the ICAO24 / Mode S code for N428UP?

N428UP's ICAO24 (Mode S) transponder code is A51B27 — the hex address the Mode S transponder on this Boeing broadcasts.