# N7251U: 1977 Boeing 727-222, registration cancelled 2003-01-06 - Type: Cancelled registration (FAA registry, deregistered aircraft) - Cancelled: January 6, 2003 - Status when cancelled: Triennial form not returned - Airframe: [Boeing 727-222](https://openairdocs.org/model/boeing-727-222) (registry code 1384073) - Engine: [Pratt & Whitney JT8D-9 series](https://openairdocs.org/engine/pratt-whitney-jt8d-9-series) (registry code 52048) - Data sheets: [TCDS A3WE](https://openairdocs.org/tcds/A3WE), [TCDS E2EA](https://openairdocs.org/tcds/E2EA) (OpenAirDocs) - Serial number: 21398 - Year built: 1977 - Type of aircraft: Fixed wing multi engine - Engine type: Turbo-jet - Airworthiness: Standard, transport - Airworthiness date: October 21, 1977 - Certificate issued: February 27, 1979 - Last registry action: July 17, 2001 - Mode S code: A9B8AD - 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) - Physical address: [Elk Grove Township, IL](https://openairdocs.org/faa-place/IL/Elk%20Grove%20Township) - 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/N7251U - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=7251U - Page: https://openairdocs.org/deregistered/N7251U-2003-01-06 From the FAA registry file of October 29, 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 727-222: https://openairdocs.org/model/boeing-727-222.md ## Service difficulty reports (17) Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. - [SDR 2001UALA00122](https://openairdocs.org/sdr/2001UALA00122), Feb 16, 2001: HARNESS. BURNED. STRONG BURNING ODOR IN E&E COMPARTMENT. *S/D* APU FEEDER HARNESS BURNED AT FIREWALL CONNECTOR. REPLACED APU HARNESS WIRES PER GN-MM 2-0-15-1. - [SDR 2000UALA00642](https://openairdocs.org/sdr/2000UALA00642), Oct 25, 2000: LINE. LEAKING. A-SYSTEM HYDRAULIC FLUID WENT FROM 3.5 TO 1.0 GAL. THE SYSTEM WAS ISOLATED, A-PUMPS OFF. *S/D* FOUND LINE TO A SYSTEM PRESSURE TRANSMITTER LEAKING. MANUFACTURED - [SDR 2000UALA00065](https://openairdocs.org/sdr/2000UALA00065), Feb 9, 2000: SEAT. LOOSE. SEAT ROW 16ABC INBOARD FOOT LOOSE. *S/D* SHEARED RIVETS ON ANCHOR NUT. REF:IPC 25-00-XX-060K ITEM 16-17) HAVE SHEARED OFF DUE TO INCORRECT INSTALLATION OF SEAT - [SDR 2000UALA00047](https://openairdocs.org/sdr/2000UALA00047), Jan 31, 2000: SEAT. LOOSE. SEAT 12 ABC APPEARED TO BE LOOSE IN TRACK. *S/D* FINDINGS INDICATE FORWARD ATTACH POINT EXTENDED TOO FAR PUTTING PRESSURE ON MONEL RIVETS RATHER THAN ON ATTACH - [SDR 99UAL900548](https://openairdocs.org/sdr/99UAL900548), Oct 24, 1999: CONNECTOR. CORRODED. AFT COFFEEMAKER CAUSED SMOKE, SMOKE STOPPED WHEN POT TURNED OFF. *S/D* SMOKE CAUSED BY CORRODED AND BURNED CONNECTOR ON AIRCRAFT SIDE. REPLACED CONNECTOR. THIS - [SDR 99UAL900545](https://openairdocs.org/sdr/99UAL900545), Oct 21, 1999: ACTUATOR. FAILED. SLATS NR 2, 3, 6 AND 7 WOULD NOT RETRACT WHEN FLAP 2 DEGREES SELECTED FROM 5 DEGREES. NR 4 SLAT TRANSITION LIGHT DID NOT ILLUMINATE DURING RETRACTION. RETURNED - [SDR 99UAL900416](https://openairdocs.org/sdr/99UAL900416), Aug 7, 1999: SEQUENCE VALVE. LEAKING. ON GEAR EXTENSION AIRCRAFT LOST HYDRAULIC SYSTEM A. BOTH PUMPS RAN TO ZERO HYDRAULIC FLUID QUANTITY. *S/D* REPLACED NR 1 AND NR 2 ENGINE DRIVEN HYDRAULIC PUMPS - [SDR 99UAL900392](https://openairdocs.org/sdr/99UAL900392), Jul 22, 1999: RELAY. FAILED. AFTER TAKEOFF, ALL BOOST PUMPS FOR NR 2 FUEL TANK FAILED. CIRCUIT BREAKERS POPPED. AFT FLIGHT REPORTED FUEL FUMES. RETURNED TO DEN. *S/D* MOST LIKELY CAUSE MAY - [SDR 99UAL900360](https://openairdocs.org/sdr/99UAL900360), Jul 7, 1999: SEAL. WORN. RETURNED TO SFO DUE TO STRUT OVERHEAT LIGHT CAME ON AFTER TAKEOFF. *S/D* LEAKING SEAL ON UPPER SIDE OF ANTI-ICE VALVE. REPLACED SEAL. - [SDR 99UAL900004](https://openairdocs.org/sdr/99UAL900004), Jan 3, 1999: SWITCH. FAILED. TAKEOFF ABORTED AT APPROXIMATELY 90 KNOTS DUE TO NR 2 ENGINE REVERSER LIGHT ILLUMINATED DURING TAKEOFF ROLL. *S/D* BAD STOW SWITCH. REPLACED STOW SWITCH. - [SDR 98UAL900590](https://openairdocs.org/sdr/98UAL900590), Dec 7, 1998: SWITCH. INTERMITTENT. NR 2 REVERSER NOT STOWED LIGHT CAME ON AT 100 KNOTS ON TAKEOFF. ABORTED TAKEOFF. *S/D* SUBSEQUENT TROUBLESHOOTING OR THE REVERSER OPERATION REVEALED WHAT APPEAR - [SDR 97UAL900743](https://openairdocs.org/sdr/97UAL900743), Sep 30, 1997: BATTERIES. DISCHARGED. RIGHT FORWARD OVERWING EMERGENCY EXIT LIGHT IS INOPERATIVE. REPLACED BATTERIES AND THE SYSTEM CHECKS OK. - [SDR 97UAL900735](https://openairdocs.org/sdr/97UAL900735), Sep 25, 1997: MECHANISM. OUT OF ADJUST. AFTER LANDING AND DURING TAXI, DOOR 1L OPEN LIGHT ON FLIGHT ENGINEER'S PANEL CAME ON. FLIGHT ATTENDANT HAD TO FORCE DOOR HANDLE CLOSED. DOOR HANDLE TAKES EXCESS - [SDR 96UAL900929](https://openairdocs.org/sdr/96UAL900929), Dec 6, 1996: GEAR HANDLE. MALFUNCTIONED. ON LANDING, GEAR EXTENSION ALL GEAR UNSAFE LIGHTS REMAINED ON. HANDLE WOULD NOT GO TO DETENT, MUSHY HANDLE AND MISSED APPROACH. *S/D* JACKED AIRCRAFT AND PERFOR - [SDR 95UAL900351](https://openairdocs.org/sdr/95UAL900351), Dec 27, 1995: ACTUATING ARM. FAILED. RIGHT MAIN GEAR FAILED TO RETRACT. RT GEAR INTRANSIT LIGHT ON DURING FIRST ATTEMPT. CYCLED GEAR AND RT GEAR LIGHT AND RT GEAR DOOR LIGHT ON. FLIGHT RETURNED TO - [SDR 95UAL900254](https://openairdocs.org/sdr/95UAL900254), Nov 9, 1995: RIVET. SHEARED. RETURNED TO ORD DUE TO BIRD STRIKE. ACCOMPLISHED BIRD STRIKE INSPECTION. ALL THREE ENGINE INLETS CHECKED AND NO DAMAGE FOUND. REPLACED SHEARED RIVET AT CO-PILOT - [SDR 95UAL727038](https://openairdocs.org/sdr/95UAL727038), May 25, 1995: ACTUATOR. MALFUNCTIONED. RT MLG DOOR LIGHT ON WITH HANDLE IN OFF POS, USED OVERRIDE TO GET HANDLE TO UP POS, LIGHT WENT OUT. ON SECOND TRY GEAR HANDLE HARD TO MOVE UP, NEEDED TRIGGER. R ## 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. - [Incident 19850417022249I](https://openairdocs.org/incident/19850417022249I), Apr 17, 1985: Boeing 727222 (N7251U), Lincoln, NE. Unscheduled landing due to ill passenger. - [Incident 19810625045599I](https://openairdocs.org/incident/19810625045599I), Jun 25, 1981: Boeing 727222 (N7251U), Boston, MA. Pilot became ill during climb. Second in command took over. Pilot received emergency treatment and was released. --- 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.