# N4720U: Boeing 747-122, registration cancelled 1998-05-26

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: May 26, 1998
- Status when cancelled: Triennial form not returned
- Airframe: [Boeing 747-122](https://openairdocs.org/model/boeing-747-122) (registry code 1384872)
- Data sheets: [TCDS A20WE](https://openairdocs.org/tcds/A20WE) (OpenAirDocs)
- Serial number: 19881
- Type of aircraft: Fixed wing multi engine
- Certificate issued: September 2, 1971
- Last registry action: September 20, 1995
- Mode S code: A5CAF3
- Owner when cancelled: [United Air Lines Inc](https://openairdocs.org/faa-owner/UNITED%20AIR%20LINES%20INC)
- Location: [Chicago, IL](https://openairdocs.org/faa-place/IL/Chicago)
- Owner type: Corporation
- Owner's area on the map: 41.8500° N, 87.6501° W: Placed by OpenAirDocs: center of Chicago, IL, within about 9 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N4720U
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4720U
- Page: https://openairdocs.org/deregistered/N4720U-1998-05-26

From the FAA registry file of November 3, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Boeing 747-122: https://openairdocs.org/model/boeing-747-122.md

## Service difficulty reports (1)

Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

- [SDR 95UAL900126](https://openairdocs.org/sdr/95UAL900126), Sep 13, 1995: SLIDE. LEAKING. DOOR 5 LT SLIDE FAILED POROSITY TEST DURING PROOF PRESSURE TEST AT OVERHAUL. SLIDE SCRAPPED.

## FAA accident and incident reports (4)

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 19881221065739I](https://openairdocs.org/incident/19881221065739I), Dec 21, 1988: Boeing 747122 (N4720U), Narita, JA. B loop fire detection light came on. Discharged fire bottles. Engine shut down. Replaced both loop connectors.
- [Incident 19820201001999I](https://openairdocs.org/incident/19820201001999I), Feb 1, 1982: Boeing 747122 (N4720U), Chicago, IL. Engine shutdown when engine temperature pegged on the high side. Found bare wires on breather temperature indicator
- [Incident 19780701041909I](https://openairdocs.org/incident/19780701041909I), Jul 1, 1978: Boeing 747122 (N4720U), Chicago, IL. Tire blew on takeoff, flight continued to honolulu and landed without incident.
- [Incident 19780122004089I](https://openairdocs.org/incident/19780122004089I), Jan 22, 1978: Boeing 747/ (N4720U), Newark, NJ, Minor damage. Engine contacted snowbank and injested marker light.

## Other aircraft with N4720U

- [Cancelled 1964-07-17](https://openairdocs.org/deregistered/N4720U-1964-07-17): Cessna 180G, S/N 18051420. Exported to Canada. Owner: [Cessna Aircraft Co](https://openairdocs.org/faa-owner/CESSNA%20AIRCRAFT%20CO), [Wichita, KS](https://openairdocs.org/faa-place/KS/Wichita)

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