N4723U (Boeing 747-122) — routes, history & safety record

Registrations are reused: the FAA register shows one earlier aircraft with this mark, the last exported to Canada on August 24, 1964.

FlightFinder has no observed route profile for this registration. The documented safety events below are available independently of live flight tracking.

Scheduled US airline service

Reported in scheduled US passenger service from January 1995 to December 1997 — 635 flights. Last reported flight: December 26, 1997, United Airlines, SFO → HNL.

Not reported in scheduled US service since December 1997 (data through July 2026).

Carrier	First	Last	Flights
United Airlines UA	January 1995	December 1997	635

Source: BTS Reporting Carrier On-Time Performance (public domain; US reporting carriers, scheduled domestic flights).

Safety history

December 28, 1997Accident
The pilot-in-command's inadvertent flight into adverse weather conditions, and the difficulty of obtaining adequate weather forecasts of over-ocean turbulence. Factors contributing to the accident include the presence of clear air turbulence, and the failure of the flight attendant to issue a safety advisory.
Boeing 747-122
The pilot-in-command's inadvertent flight into adverse weather conditions, and the difficulty of obtaining adequate weather forecasts of over-ocean turbulence. Factors contributing to the accident include the presence of clear air turbulence, and the failure of the flight attendant to issue a safety advisory. Full accident record