# N996UA: 1981 Boeing 737-291, registration cancelled 2003-07-30

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: July 30, 2003
- Exported to: Nigeria
- Status when cancelled: Triennial form not returned
- Airframe: [Boeing 737-291](https://openairdocs.org/model/boeing-737-291) (registry code 138448W)
- Engine: [Pratt & Whitney JT8D-17 series](https://openairdocs.org/engine/pratt-whitney-jt8d-17-series) (registry code 52049)
- Data sheets: [TCDS A16WE](https://openairdocs.org/tcds/A16WE), [TCDS E2EA](https://openairdocs.org/tcds/E2EA) (OpenAirDocs)
- Serial number: 22456
- Year built: 1981
- Type of aircraft: Fixed wing multi engine
- Engine type: Turbo-jet
- Airworthiness: Standard, transport
- Airworthiness date: February 25, 1981
- Certificate issued: November 14, 1995
- Last registry action: November 20, 2001
- Mode S code: ADEAB0
- Owner when cancelled: [United Air Lines Inc](https://openairdocs.org/faa-owner/UNITED%20AIR%20LINES%20INC)
- Location: [Arlington Heights, IL](https://openairdocs.org/faa-place/IL/Arlington%20Heights)
- Owner type: Corporation
- Owner's area on the map: 42.0645° N, 87.9867° W: Placed by OpenAirDocs at the center of ZIP code 60005, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N996UA
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=996UA
- Page: https://openairdocs.org/deregistered/N996UA-2003-07-30

From the FAA registry file of November 7, 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 737-291: https://openairdocs.org/model/boeing-737-291.md

## Service difficulty reports (12)

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

- [SDR 2001UALA00767](https://openairdocs.org/sdr/2001UALA00767), May 20, 2001: WEB. CRACKED. FLOOR PRESSURE WEB CRACKED AT BS 1004, LBL 40, WL 208. REMOVED AND REPLACED WEB. MAJOR REPAIR ACCOMPLISHED.
- [SDR 2001UALA00766](https://openairdocs.org/sdr/2001UALA00766), May 20, 2001: DOUBLER. CRACKED. PREVIOUS FRAME REPAIR CRACKED AT BS 420, STR 23L. REPLACED REPAIR DOUBLER. MAJOR REPAIR ACCOMPLISHED.
- [SDR 2001UALA00744](https://openairdocs.org/sdr/2001UALA00744), May 16, 2001: FLOORBEAM. CRACKED. FLOORBEAM CRACKED AT FLOOR LEVEL AT BS 663, BL 0. REMOVED DAMAGED AREA. ACCOMPLISHED SPLICE REPAIR. MAJOR REPAIR ACCOMPLISHED.
- [SDR 2001UALA00692](https://openairdocs.org/sdr/2001UALA00692), May 8, 2001: FLOORBEAM. CRACKED. FLOOR BEAM WEB CRACKED IN TWO PLACES. STA 706-716 BL 0. INSTALLED DOUBLER.
- [SDR 2001UALA00639](https://openairdocs.org/sdr/2001UALA00639), May 4, 2001: SKIN. CRACKED. FUSELAGE SKIN CRACKED BETWEEN WL 207 AND 218 AT RBL 5.7. REMOVED DAMAGE AND INSTALLED REPAIR PER SRM 53-10-11.
- [SDR 2001UALA00131](https://openairdocs.org/sdr/2001UALA00131), Feb 20, 2001: CHECK VALVE. RESTRICTED. RETURNED TO FIELD DUE TO LOSS OF THE B-SYSTEM HYDRAULICS. *S/D* FOUND B-SYSTEM RESERVOIR CHECK VALVE FAILED AND RESTRICTING FLOW. REPLACED BOTH RESERVOIR CHECK 
- [SDR 2001UALA00018](https://openairdocs.org/sdr/2001UALA00018), Jan 10, 2001: ENGINE. MALFUNCTIONED. UNCOMMANDED POWER LOSS IN ENGINE NR 2. *S/D* REPLACED THE NR 2 ENGINE.
- [SDR 2000UALA00375](https://openairdocs.org/sdr/2000UALA00375), Jul 1, 2000: FIRE LOOP. DAMAGED. OVERHEAT WARNING LIGHT ON. *S/D* REPLACED LOWER OVERHEAT SENSING LOOP ON NR 1 ENGINE PER MM 26-11-04. SYSTEM WAS TESTED NORMAL PER MM 26-12-02.
- [SDR 99UAL900453](https://openairdocs.org/sdr/99UAL900453), Aug 29, 1999: FLIGHT RECORDER. FAILED. CREW REPORTS A BURNING SMELL IN THE AFT GALLEY AREA. *S/D* THE SMELL WAS FOUND TO BE COMING FROM THE FLIGHT DATA RECORDER. REPLACED THE FLIGHT DATA RECORDER. NO
- [SDR 99UAL900065](https://openairdocs.org/sdr/99UAL900065), Jan 29, 1999: TR UNIT. MALFUNCTIONED. WEATHER RADAR DISPLAY WAS INCONSISTENT. *S/D* WEAK MESSAGE DURING SYSTEM TEST. REPLACED TRANSCEIVER TO CORRECT FOR 80 MILE RANGE. ALL GREEN RETURNS, OPS CHECK O
- [SDR 99UAL900055](https://openairdocs.org/sdr/99UAL900055), Jan 23, 1999: VALVE. FAILED. NR 1 ENGINE ANTI-ICE VALVE CIRCUIT BREAKER WILL NOT STAY IN. *S/D* REPLACED NR 1 ENGINE ANTI-ICE VALVE, OPERATIONAL CHECK IS OK.
- [SDR 97UAL900230](https://openairdocs.org/sdr/97UAL900230), Mar 21, 1997: POWER SUPPLY. INOPERATIVE. EMERGENCY SLIDE LIGHT AT DOOR 2R INOPERATIVE. REPLACED BATTERY, POWER SUPPLY, AND REFLECTOR. OPS CHECK GOOD.

## FAA accident and incident reports (1)

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 19900118009929I](https://openairdocs.org/incident/19900118009929I), Jan 18, 1990: Boeing 737291 (N996UA), Houston, TX, Minor damage. Electrical odor in cockpit on approach. Forward galley light ballast had overheated.

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