# Service difficulty reports: N303TW A list on [N303TW](https://openairdocs.org/aircraft/N303TW.md). Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first. - [SDR 98ZZZM479](https://openairdocs.org/sdr/98ZZZM479.md): Spar Web · corroded · May 19, 1998 · N303TW · Boeing 747257B · Wing Spar > DURING C-CHECK INSPECTION DISCOVERED CORROSION ON THE CENTER TANK REAR SPAR WEB AT STATION 1241, BL 0.0. REPAIRED BY CUTTING OUT A SECTION OF PRESSURE WEB ANGLE BETWEEN LBL 5 AND RBL 15, BLENDING OUT CORROSION COMMON TO THE REAR SPAR WEB, HFEC INSPECTING AREA - [SDR 98ZZZM478](https://openairdocs.org/sdr/98ZZZM478.md): Skin · cracked · May 19, 1998 · N303TW · Boeing 747257B · Nacelle/Pylon, Plate/Skin > DURING C-CHECK INSPECTION DISCOVERED CRACKS ON THE INBOARD SIDE OF THE NR 1 PYLON SKIN AT THE SLOT SEAL POSITION, NACELLE STATION 180, WL 152. REPAIRED BY TRIMMING OUT THE CRACK IN THE SKIN, HFEC INSPECTING, FABRICATING AND INSTALLING REPAIR FILLER AND DOUBLE - [SDR 98ZZZM477](https://openairdocs.org/sdr/98ZZZM477.md): Stringer · cracked · May 19, 1998 · N303TW · Boeing 747257B · Fuselage Main, Longeron/Stringer > DURING C-CHECK INSPECTION, DISCOVERED A CRACK IN STRINGER 5R BETWEEN BS 1335 AND 1350.31, RBL 40. REPAIRED BY TRIMMING OUT THE DAMAGED SECTION OF STRINGER, FABRICATING AND INSTALLING A REPLACEMENT SECTION OF STRINGER WITH THREE REPAIR SPLICE STRAPS. REPAIRED - [SDR 98ZZZM476](https://openairdocs.org/sdr/98ZZZM476.md): Bulkhead · corroded · May 19, 1998 · N303TW · Boeing 747257B · Fuselage Main, Bulkhead > DURING C-CHECK INSPECTION DISCOVERED CORROSION ON THE CANTER BULKHEAD AROUND THE APU FUEL FEED CUTOUT AT BS 1241 BETWEEN BL 0.0 AND 11.33. REPAIRED BY TRIMMING OUT THE SLOPING CANTER PRESSURE DECK WEB BETWEEN BL 0.0 AND RBL 15, FABRICATING AND INSTALLING A RE - [SDR 98ZZZM475](https://openairdocs.org/sdr/98ZZZM475.md): Skin · cracked · May 19, 1998 · N303TW · Boeing 747257B · Nacelle/Pylon, Plate/Skin > DURING C-CHECK INSPECTION DISCOVERED A SKIN DENT AND CRACK IN THE NR 1 PYLON OUTBOARD SKIN AT NACELLE STATION 188, WL 148.5. REPAIRED BY BLENDING OUT THE DAMAGED OUTER SKIN, REMOVING THE EXISTING EXTERNAL CUTOUT CORNER DOUBLER, FABRICATING AND INSTALLING A RE - [SDR 98ZZZM474](https://openairdocs.org/sdr/98ZZZM474.md): Bulkhead · corroded · May 19, 1998 · N303TW · Boeing 747257B · Fuselage Main, Bulkhead > DURING C-CHECK INSPECTION DISCOVERED CORROSION ON THE CANTER BULKHEAD AROUND THE APU FUEL FEED CUTOUT AT BS 1241 BETWEEN BL 0.00 AND 11.33. REPAIRED BY TRIMMING OUT THE SLOPING CANTER PRESSURE DECK WEB BETWEEN BL 0.0 AND RBL 15, FABRICATING AND INSTALLING A R - [SDR 98ZZZM473](https://openairdocs.org/sdr/98ZZZM473.md): Skin · chafed · May 19, 1998 · N303TW · Boeing 747257B · Nacelle/Pylon, Plate/Skin > DURING C-CHECK INSPECTION DISCOVERED CHAFING DAMAGE ON THE UPPER EDGE OF THE NR 4 PYLON OUTBOARD SKIN. REPAIRED BY TRIMMING OUT THE DAMAGE, FABRICATING AND INSTALLING REPAIR STRAP AND EXTERNAL DOUBLER. REPAIRED IAW EVERGREEN AIR CENTER, ENGINEERING CHANGE/RE - [SDR TWAA9785001](https://openairdocs.org/sdr/TWAA9785001.md): Electronic Unit · failed · Jul 28, 1997 · N303TW · Boeing 747257B · Passenger Compartment Equipment > JFK - FLT 883 - DURING CRUISE, SEAT ELECTRONIC UNIT AND CABLE EMITTED SPARKS AT SEAT 23-2. REMOVED AND REPLACED SEAT ELECTRONIC UNIT, MFG PN 1103460-121, MANUFACTURED BY HUGHES AIRCRAFT, AND POWER CABLE, MFG PN C02946-54. OPERATIONAL CHECK NORMAL. CHECK C - - [SDR TWAA9775002](https://openairdocs.org/sdr/TWAA9775002.md): Engine · failed · Jul 4, 1997 · N303TW · Boeing 747257B · Engine (Turbine/Turboprop) > LGW - FLT 883 - DURING CLIMB, NR 3 ENGINE, SN 4144, OIL QUANTITY WENT TO ZERO. ENGINE SHUT DOWN IN-FLIGHT. CHANGED ENGINE, SN 4144. ENGINE TOTAL TIME: 73,992 HOURS; 14,322 CYCLES. CHECK C - 3-20-97 - JFK. (X) - [SDR TWAA9736001](https://openairdocs.org/sdr/TWAA9736001.md): Line · failed · Mar 7, 1997 · N303TW · Boeing 747257B · Hydraulic System, Main > JFK - FLT 885 - DURING CLIMB, NR 4 HYDRAULIC QUANTITY WENT TO ZERO. REMOVED AND REPLACED HYDRAULIC PRESSURE LINE FROM ENGINE DRIVEN PUMP TO THE FIREWALL, MFG P/N AE703104-1. OPERATIONAL CHECKED NORMAL. (M) - [SDR TWAA9713001](https://openairdocs.org/sdr/TWAA9713001.md): Skin · cracked · Feb 17, 1997 · N303TW · Boeing 747257B · Nacelle/Pylon, Plate/Skin > JFK - REPAIRED A 4 INCH CRACK ON THE NR 3 PYLON AT THE INBOARD SIDE OF THE PYLON LOWER FORWARD ACCESS HOLE 473CL. (M) - [SDR TWAA9615902](https://openairdocs.org/sdr/TWAA9615902.md): Gasper Fan · failed · Dec 21, 1996 · N303TW · Boeing 747257B · Air Distribution Fan > LAX - FLT 849 - DURING CRUISE, GASPER FAN BECAME NOISY AND STARTED EMITTING BURNING ODOR INTO CABIN. TURNED OFF GASPER FAN. FOUND GASPER FAN HAD OVERHEATED. REPLACED GASPER FAN, MFG P/N 6054577. GASPER FAN OPERATION THEN CHECKED NORMAL. (M) - [SDR TWAA9614201](https://openairdocs.org/sdr/TWAA9614201.md): Test Box · failed · Nov 19, 1996 · N303TW · Boeing 747257B · Flight Compartment Lighting > JFK - FLT 885 - DURING CRUISE, HAD SMOKE AND ELECTRICAL ODOR FROM ENGINEER PANEL. TURNED OFF WINDOW HEAT. FOUND OVERHEAT INDICATION IN MASTER DIM AND TEST BOX, MFG P/N 65B47522-30. REPLACED MASTER DIM AND TEST BOX, CHECKED WINDOW HEAT WIRING. MASTER DIM AN - [SDR TWAA9613201](https://openairdocs.org/sdr/TWAA9613201.md): Fireloop · malfunctioned · Oct 28, 1996 · N303TW · Boeing 747257B · Fire Detection > LGW - DURING CRUISE THE APU FIREWARNING LIGHT ILLUMINATED AND BELL SOUNDED WITH APU SHUTDOWN. REMOVED AND REPLACED APU DOOR FIREWARNING LOOP, MFG P/N 895312, AND THE FIRE BOTTLE, MFG P/N 34505501M. OPERATIONAL CHECK NORMAL. (M) - [SDR 96ZZZM908](https://openairdocs.org/sdr/96ZZZM908.md): Power Supply · inoperative · Apr 13, 1996 · N303TW · Boeing 747257B · Emergency Lighting > STL - FLT 16 - DURING LAYOVER, MAINTENANCE EMERGENCY EGRESS LIGHTS ON BOTH AISLES, BETWEEN NR 3 AND NR 4 DOORS, REMAINED ON CONTINUOUSLY. REMOVED AND REPLACED EGRESS LIGHT POWER SUPPLY, MFG P/N 5822-3. OPERATIONAL CHECK NORMAL. (M) - [SDR 96ZZZM775](https://openairdocs.org/sdr/96ZZZM775.md): Skin · cracked · Mar 22, 1996 · N303TW · Boeing 747257B · Doors > DURING OP-16, FOUND THREE CRACKS OVER ONE INCH LONG ON LOWER FORWARD CORNER OF NR 32 DOOR OUTER SKIN AND TWO CRACKS ON INNER SKIN. INSTALLED DOUBLER REPAIR PER SSRM 53-30-303 AND TWA STANDARD PRACTICES. (M) - [SDR 96ZZZM802](https://openairdocs.org/sdr/96ZZZM802.md): Panel · cracked · Mar 13, 1996 · N303TW · Boeing 747257B · Wing, Plate/Skin > DURING OP-16, FOUND A 23 INCH CRACK AT RIGHT WING TOP, IN LEADING EDGE PANEL, AFT OF CENTER OF NR 18 LEADING EDGE FLAP. REPAIRED PER SRM 51-40-12 AND TWA STANDARD PRACTICES. - [SDR 96ZZZM771](https://openairdocs.org/sdr/96ZZZM771.md): Rib · cracked · Mar 13, 1996 · N303TW · Boeing 747257B · Trailing Edge Flaps > DURING OP-16, FOUND A 6 INCH CRACK IN RIGHT INBOARD FOREFLAP INBOARD RIB, AND FOUND CRACK IN ANGLE. REPAIRED BY REPLACING RIB AND ANGLE PER SRM 50-10-01 AND TWA STANDARD PRACTICES. - [SDR 95ZZZX1632](https://openairdocs.org/sdr/95ZZZX1632.md): Serving Cart · failed · Mar 8, 1995 · N303TW · Boeing 747257B · Buffet/Galleys > JFK - FLT 885 - DURING CRUISE, SINGLE SERVICE CART POSITION D5A, OVERHEATED AND EMITTED SMOKE. CIRCUIT BREAKER TRIPPED. DISCONNECTED SERVING CART. REPLACED SINGLE SERVICE CART, SN 1374. SINGLE SERVICE CART POSITION OPERTION CHECKED NORMAL. CHECK C-2 - 4-3 ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet' WHERE n_number = 'N303TW' AND registry_match = 'registration' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/aircraft/N303TW/reports --- 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.