# N4723U: Boeing 747-122, registration cancelled 1998-05-05

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: May 5, 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: 19882
- Type of aircraft: Fixed wing multi engine
- Certificate issued: February 10, 1972
- Last registry action: September 20, 1995
- Mode S code: A5CB5C
- 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/N4723U
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4723U
- Page: https://openairdocs.org/deregistered/N4723U-1998-05-05

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 (6)

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

- [SDR 97UAL900870](https://openairdocs.org/sdr/97UAL900870), Dec 13, 1997: LIGHTS. MALFUNCTIONED. CABIN EMERGENCY LIGHTS COME ON WHEN COCKPIT SWITCH IS ARMED. *S/D* CAUSED BY 400HZ NOISE PICKED UP ON THE CONTROL LINES FOR THE EMERGENCY LIGHTS. CORRECTIVE ACT
- [SDR 97UAL900582](https://openairdocs.org/sdr/97UAL900582), Jul 14, 1997: BEAM. CRACKED. FATIGUE CRACK FOUND ON FOWARD LOWER CORNER OF DOOR FOUR RIGHT. CRACKING IS SIMILAR TO THAT REFERENCED IN SERVICE BULLETIN 747-52-2168. THERE WAS NO COLLISION OR
- [SDR 97UAL900259](https://openairdocs.org/sdr/97UAL900259), Apr 3, 1997: ENGINE. STALLED. NR 3 ENGINE STALLED DURING CLIMB-OUT. EGT OVERTEMP. AIRCRAFT RETURNED TO FIELD. OVERWEIGHT LANDING.
- [SDR 97UAL900218](https://openairdocs.org/sdr/97UAL900218), Mar 17, 1997: BATTERY PACK. DISCHARGED. EMERGENCY EXIT SIGNS FAILED TO ILLUMINATE DURING EMERGENCY LIGHT CHECK. REPLACED BATTERY PACK. OPERATION CHECKS NORMAL.
- [SDR 96UAL900852](https://openairdocs.org/sdr/96UAL900852), Nov 2, 1996: CARRIAGE ASSY. FAILED. DURING SCHEDULED C-CHECK, THE FORE FLAP ATTACH CLEVIS LUG ON NR 4 TRAILING EDGE FORE FLAP SEQUENCE CARRIAGE UPPER SURFACE WAS DISCOVERED TO HAVE FAILED. PART FA
- [SDR 96UAL900557](https://openairdocs.org/sdr/96UAL900557), Jul 19, 1996: LAMP. NOT SECURE. NR 1 LEFT OVERWING EMERGENCY LIGHT HAS FORWARD LAMP INOP. LAMP FOUND UNSECURED. SECURED LAMP, OPS CHECKS GOOD.

## NTSB investigations (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 DCA98MA015](https://openairdocs.org/ntsb/DCA98MA015), Dec 28, 1997: Boeing 747-122 (N4723U), Pacific Ocean (Pacific Ocean), minor damage, 1 fatal. Probable cause: 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…

## FAA accident and incident reports (2)

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.

- [Accident 19971228039379A](https://openairdocs.org/incident/19971228039379A), Dec 28, 1997: Boeing 747122 (N4723U), Tokyo, JA, Minor damage, 1 fatal. Narrative: about one hour-forty minutes after takeoff, at 1840Z, in the vicinity of N82-30 latitude, E158-60 longitude, the captain observed slow variations in…
- [Incident 19930804045239I](https://openairdocs.org/incident/19930804045239I), Aug 4, 1993: Boeing 747122 (N4723U), Washington, DC. After departure captain began feeling light headed. Returned. Landed safely. Captain later cleaed by medical.

## Other aircraft with N4723U

- [Cancelled 1964-08-24](https://openairdocs.org/deregistered/N4723U-1964-08-24): Cessna 180G, S/N 18051423. 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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