# N4727U: not currently registered

- Registered now: No (not in the FAA registry file). The mark may be reserved or free to assign
- Earlier aircraft: 2
- Last cancelled: February 17, 1998
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4727U
- Page: https://openairdocs.org/aircraft/N4727U

## Aircraft that carried N4727U

- [Cancelled 1998-02-17](https://openairdocs.org/deregistered/N4727U-1998-02-17): Boeing 747-122, S/N 19883. Triennial form not returned. Owner: [United Air Lines Inc](https://openairdocs.org/faa-owner/UNITED%20AIR%20LINES%20INC), [Chicago, IL](https://openairdocs.org/faa-place/IL/Chicago)
- [Cancelled 1964-07-23](https://openairdocs.org/deregistered/N4727U-1964-07-23): Cessna 180G, S/N 18051427. Exported to Australia. Owner: [Cessna Aircraft Co](https://openairdocs.org/faa-owner/CESSNA%20AIRCRAFT%20CO), [Wichita, KS](https://openairdocs.org/faa-place/KS/Wichita)

## NTSB investigations on N4727U (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB DEN78FI014](https://openairdocs.org/ntsb/DEN78FI014), Oct 12, 1977: Boeing 747 (N4727U), Denver, CO, incident, no damage

## FAA accident and incident reports on N4727U (5)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Incident 19900815049449I](https://openairdocs.org/incident/19900815049449I), Aug 15, 1990: Boeing 747122 (N4727U), Honolulu, HI. Loss of oil on NR1 engine. Shut down and headed for Honolulu without clearance. Aft seal had failed.
- [Incident 19830521028699I](https://openairdocs.org/incident/19830521028699I), May 21, 1983: Boeing 747122 (N4727U), Chicago, IL, Minor damage. Blew a tire on takeoff. Continued to destination. Replaced no. 5 and no. 6 tires.
- [Incident 19800910082649I](https://openairdocs.org/incident/19800910082649I), Sep 10, 1980: Boeing 747122 (N4727U), Honolulu, HI. Flight attendant struck on the head by overhead bin door. Latch was faulty, and bin was overloaded.
- [Incident 19800505050759I](https://openairdocs.org/incident/19800505050759I), May 5, 1980: Boeing 747122 (N4727U), Chicago, IL. Aircraft returned to gate due to anti-skid inop. Light on. Number 5 front brake anti-skid found inop.
- [Incident 19790914035389I](https://openairdocs.org/incident/19790914035389I), Sep 14, 1979: Boeing 747122 (N4727U), Chicago, IL. Aircraft returned to field with hydraulic flap problem. Due to failed right outboard flap system transmitter.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.