# N4724U: Boeing 747-122, registration cancelled 1997-03-18

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: March 18, 1997
- Exported to: Gambia
- 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: 19875
- Type of aircraft: Fixed wing multi engine
- Certificate issued: November 13, 1970
- Last registry action: October 18, 1995
- Mode S code: A5CB7F
- 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/N4724U
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4724U
- Page: https://openairdocs.org/deregistered/N4724U-1997-03-18

From the FAA registry file of November 12, 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 (4)

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

- [SDR 96UAL900944](https://openairdocs.org/sdr/96UAL900944), Dec 17, 1996: DRIVE UNIT. FAILED. LEFT NR 2 LEADING EDGE FLAP WOULD NOT RETRACT. RETURNED TO FIELD. *S/D* NR 2 LEFT HAND LEADING EDGE FLAP DRIVE UNIT WAS REPLACED. REMOVED UNIT WAS DISASSEMBLED 
- [SDR 96UAL900591](https://openairdocs.org/sdr/96UAL900591), Aug 2, 1996: COMPRESSOR. STALLED. NR 3 ENGINE HAD COMPRESSOR STALL WHEN THROTTLE RETARDED FOR DESCENT. STALL CAUSED STEADY AIRFRAME VIBRATION, EGT CLIMBED TO 700 DEGREES AND ENGINE SHUTDOWN.
- [SDR 96UAL900454](https://openairdocs.org/sdr/96UAL900454), Jun 15, 1996: SKIN. CRACKED. LEFT UPPER SKIN PANEL WAS OBSERVED CRACKED IN-FLIGHT. FOUND PANEL CRACKED AND DELAMINATED ALL THE WAY ACROSS THE INBOARD-OUTBOARD DIRECTION. REMOVED SKIN PANEL,
- [SDR 95UAL900117](https://openairdocs.org/sdr/95UAL900117), Sep 6, 1995: ENGINE. FLAMEOUT. NR 2 ENGINE FLAMEOUT AT FLIGHT LEVEL 370 AND ENGINE RELIT AT FLIGHT LEVEL 350. ACCOMPLISHED FLAMEOUT PROCEDURES. REPLACED NR 2 ENGINE FUEL FILTER AND SUMPED THE

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