Boeing 737-2T4

Service difficulty reports · 1,269

Newest first. General aviation reporting is voluntary.

Query with SQL
duckdb -csv -c "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 aircraft_model_key = '7372T4'
  ORDER BY difficulty_date DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

SDR 97ZZZM618Floorbeam · corrodedFORWARD CARGO STATION 328 CABIN FLOORBEAM HAS CORROSION RBL 24-56. FABRICATED 'L' ANGLES, TWO 1 INCH BY 2 INCH BY 100 INCH, ONE 1INCH BY 2 INCH BY 30 INCH FROM BAC 1505 100246 T-ANGLE, TWO 1 FOOT 1.5 INCHES BY .063 INCH AND TWO 1 INCH BY 1 INCH BY 8 INCH BY .Feb 5, 1997 · N467AT · Boeing 7372T4 · Fuselage Main, Floor BeamSDR 97ZZZM617Floorbeam · corrodedCORROSION ON FLOORBEAM BS 294 BL 24 LEFT. FABRICATED 4 'L' ANGLES FROM 7075 .063 12 INCH BY 1.25 INCH BY 1 INCH AND 2.10 INCH BY 1.25 INCH BY 1. INSTALLED IAW SRM 53-10-9 FIG 5.Feb 4, 1997 · N467AT · Boeing 7372T4 · Fuselage Main, Floor BeamSDR 97ZZZM615Floorbeam · corrodedFLOORBEAM T-CAP CORRODED AT FS 294.5 FROM LBL 12 TO RBL 12. CORROSION WAS .030 BEYOND LIMITS IAW SRM 53-10-1. FABRICATED FLOORBEAM SECTION OUT OF 7075 T611 98.5 INCH BY 2 INCH BY 1 INCH. INSTALLED REPAIR IAW SRM 51-30-2, 51-10-1, 51-10-2 AND MM 51-21-21.Feb 4, 1997 · N467AT · Boeing 7372T4 · Fuselage Main, Floor BeamSDR 97ZZZM606Floorbeam · corrodedFLOORBEAM FS 344 (UPPER T-CAP) CORRODED FROM LBL 45-58. CORROSION WAS .030 BEYOND LIMITS IAW SRM 53-10-1 FIG 1. FABRICATED ONE FLOORBEAM REPAIR. FABRICATED 6 ATTACH ANGLES. ONE OUT OF 7075 T6 11 11.75 INCH BY 1 INCH BY 1 INCH BY .063. THREE OUT OF 7075 T61Feb 4, 1997 · N467AT · Boeing 7372T4 · Fuselage Main, Floor BeamSDR 97ZZZM605Frame · crackedFS 639 LEFT 639 FRAME IS CRACKED 3 INCH SPANWISE AT WL 218. FABRICATED WEB STATION FROM 2024 T3 .063 20 INCH BY 5.75 INCH IAW DWG 69-76459. INSTALLED WEB REPAIR IAW DWG 65C31 658 AND SB B737-53-106.Feb 4, 1997 · N467AT · Boeing 7372T4 · Fuselage Main, FrameSDR 97ZZZM604Splice · corrodedSTRINGER SPLICE CORRODED AT FS 907 STRINGER 24L. SPLICE WAS CORRODED BEYOND LIMITS. FABRICATED NEW SPLICE AND INSTALLED IAW SRM 53-10-3, 53-10-1, 51-10-2 AND MM 51-21-21.Feb 3, 1997 · N467AT · Boeing 7372T4 · Fuselage Miscellaneous StructureSDR 97ZZZM603Stringer · corrodedSTRINGER 19 RIGHT HAS HEAVY CORROSION BETWEEN FS 747 AND 767. STRINGER WAS FOUND TO BE BEYOND LIMITS. FABRICATED NEW SPLICE FROM 7075.0 .063 16 INCH BY 1.25 INCH, 14.25 INCH BY 1 INCH. INSTALLED ALL REPAIRS IAW SRM 53-10-3, 51-10-2, AND MM 51-21-21.Feb 2, 1997 · N467AT · Boeing 7372T4 · Fuselage Main, Longeron/StringerSDR 97ZZZM602Stringer · crackedSTRINGER 26R HAS CRACK 27 INCHES LONG AT BS 927 AT SHEAR CLIP ATTACH. REMOVED CRACKED STRINGER. CUT AND TRIM TO FIT SRINGER PART NR BAC-1498-157 (27 INCH LONG). FABRICATED SPLICE DOUBLER FROM 7075 T6 .040 914.75 INCH BY 1 INCH BY 1 INCH BY 1 INCH). FABRICAFeb 2, 1997 · N467AT · Boeing 7372T4 · Fuselage Main, Longeron/StringerSDR SWAA970150Skin · crackedDURING SCHEDULED SERVICE CHECK, FOUND A FUSELAGE SKIN CRACK 36 INCHES BELOW AFT ENTRY DOOR, 3.5 INCHES LONG. REPAIRED PER BOEING SRM.Feb 1, 1997 · N130SW · Boeing 7372T4 · Fuselage Main, Plate/SkinSDR SWAA970149Skin · crackedDURING SCHEDULED SERVICE CHECK, FOUND A FUSELAGE SKIN CRACK AT BS 932, AT S22R AND 12 INCHES FORWARD OF DRAIN MAST BETWEEN S22 AND 23L. REPAIRED BOTH PER BOEING SRM.Feb 1, 1997 · N130SW · Boeing 7372T4 · Fuselage Main, Plate/SkinSDR 97ZZZM601Skin · lightning strikeLOWER FUSELAGE ANTENNA BETWEEN STATION 380-400 HAS LIGHTNING STRIKE. REMOVED FORWARD PIT AND FORWARD DECK PANEL FOR ACCESS. REMOVED ANTENNA AND BASE. CAPPED AND SLOWED CO-AXIAL CABLES. FABRICATED 2 DOUBLERS OUT OF 2024 T3 .080 5.25 INCH BY 2.25 INCH. FABRFeb 1, 1997 · N467AT · Boeing 7372T4 · Fuselage Main, Plate/SkinSDR 97ZZZM593Seat Track · corrodedSEAT TRACKS HAVE EXFOLIATED CORROSIN FORWARD GALLEY AREA BS 294 RBL 12 AND RBL 24 FORWARD GALLEY TIE DOWN. CUT AND TRIMMED 2 SEAT TRACKS TO FIT PART NR BAC 1520-792 24.5 INCH AND INSTALLED SEAT TRACKS ALL IAW B737 SRM 53-10-5. (M)Jan 31, 1997 · N467AT · Boeing 7372T4 · Fuselage, Seat/Cargo Attach FittingsSDR 97ZZZM591Floorbeam · corrodedSTATION 967 CENTER ABOVE LAVATORY TANK HAS CORROSION. CUT OUT CORRODED AREA. FABRICATED 'L' ANGLE FROM 7075 T6 .080 15.2 INCH BY 2.7 INCH. FABRICATED 'L' ANGLE FROM 7075 T6 .071 12 INCH BY 2.7 INCH. FABRICATED FILLER 7075 T6 .125 2.5 INCH BY 2.0 INCH. FABJan 31, 1997 · N467AT · Boeing 7372T4 · Fuselage Main, Floor BeamSDR 97ZZZM595Angle · corrodedFORWARD SIDE OF FRAME HAS CORROSION AT STATION 727A BETWEEN STRINGER 21L AND 22L. REMOVED CORROSION FOUND TO BE OUT OF LIMITS IAW SRM 53-10-1 FIG 1 PAGE 4. REMOVED STRINGER TIE ANGLE. FABRICATED REPAIR 8 INCH BY 1.3 INCH BY 1.7 INCH .070 7075 T6 IAW BAC SRMJan 30, 1997 · N467AT · Boeing 7372T4 · Fuselage Miscellaneous StructureSDR 97ZZZM594Angle · corrodedDURING HEAVY SERVICE VISIT TO AERO CORP, FORWARD SIDE OF FRAME HAS CORROSION AT STATION 727A BETWEEN STRINGER 21L AND 22L. REMOVED CORROSION FOUND TO BE OUT OF LIMITS IAW SRM 53-10-1 FIG 1 PAGE 4. REMOVED STRINGER TIE ANGLE FABRICATED REPAIR 8 INCH BY 1.3 INJan 30, 1997 · N467AT · Boeing 7372T4 · Fuselage Miscellaneous StructureSDR 97ZZZM624Skin · corrodedRIGHT OUTBOARD FLAP BADLY CORRODED INBOARD END OF FLAP. CUT OUT CORRODED AREA 4.375 INCH BY 2.625 INCH. FABRICATED FILLER FROM 7075-T8 .083 4.375 INCH BY 2.625. FABRICATED ANGLE FROM 7075 T6 2.75 INCH BY .375 INCH. FABRICATED NEW ATTACH ANGLE FROM 2024 T-3Jan 28, 1997 · N467AT · Boeing 7372T4 · Wing, Plate/SkinSDR SWAA970101Battery · dischargedDURING SCHEDULED SERVICE CHECK, FOUND EMERGENCY EXIT LIGHT AT FWD ENTRY DOOR INOP. REPLACED BATTERY PACK PER BOEING M/M.Jan 27, 1997 · N130SW · Boeing 7372T4 · Emergency LightingSDR 97ZZZM623Skin · crackedEXTERNAL FUSELAGE SKIN CRACKED .25 INCH BS 294 AT R-1 DOOR UPPER HINGE CUT OUT CONFIRMED BY HFEC. FABRICATED DOUBLER FROM MIL 5-5059 .50 HARD .063 AND FILLER FROM 2024 T3 .063 7.375 INCH BY 5.25 INCH. DOUBLER DIM 15.375 INCHY BY 5.5 INCH. INSTALLED REPAIRS Jan 27, 1997 · N467AT · Boeing 7372T4 · Fuselage Main, Plate/SkinSDR 97ZZZM600Web · corrodedCORROSION BLOW OUT ON WEB UNDER SCUFF PLATE AT STATION 500B LONGERON 27 LEFT. MECHANICALLY REMOVED CORROSION METAL LOSS OVER 20 PERCENT OUT OF LIMITS IAW B737 FABRICATED REPAIR DOUBLER FROM 2024 T3 .050 INCH BY 16 INCH BY 1 INCH PER SRM 51-40-2 AND INSTALLED Jan 24, 1997 · N467AT · Boeing 7372T4 · Fuselage Miscellaneous StructureSDR 97ZZZM596Stringer · corrodedSTRINGER 21 RIGHT BULGED AT FS 770 AT DOME NUT. CUT OUT CORRODED STRINGER AND FABRICATED U-CHANNEL FROM 7075 T6 .032 11.5 INCH BY 1 INCH BY 1 INCH BY .750 INCH. FABRICATED NEW CHIP FROM 7075 T6 .032 BY .600 INCH BY 1.40 INCH BY 1.40 BY 3.4O INCH. INSTALLED Jan 24, 1997 · N467AT · Boeing 7372T4 · Fuselage Main, Longeron/StringerSDR 97ZZZM620Angle · crackedFORWARD PIT HAS CRACK IN CORNER UNDER SCUFF PLATE ON WEB AND NUT PLATE AT STATION 380 LONGERON 27R. REMOVED CRACKED ATTACH HANDLE. FABRICATED NEW ANGLE OUT OF 2024 T 3.5 INCH BY 1.5 INCH BY 1.875 INCH BY .032. INSTALLED IAW SRM 51-10-1, 51-06-1, AND MM 51-2Jan 20, 1997 · N467AT · Boeing 7372T4 · Fuselage Miscellaneous StructureSDR 97ZZZM371Web · crackedDURING HEAVY SERVICE VISIT AT AERO CORP IN LAKE CITY, FL, FOUND CRACK UNDER SCUFF PLATE, ON THE WEB AT FS 380, LONGERON 27R. REPAIRED CRACK IAW B737 SRM 51-10-01, 51-10-6 AND MM 51-21-71. (M)Jan 20, 1997 · N467AT · Boeing 7372T4 · Fuselage Miscellaneous StructureSDR 97ZZZM599Floorbeam · corrodedFLOORBEAM FS 312 UPPER T-CAP CORRODED LBL 12 - RBL 12. FABRICATED T-ANGLE FLOORBEAM AND SPLICE 'L' ANGLE. 'T' ANGLE 82.5 INCH BY 1 INCH FROM 7075 T6 .090. 'L' ANGLES 14 INCH BY 1 INCH BY 1 INCH 2 FROM 7075 T6 .063 INSTALLED IAW SRM 53-10-9.Jan 19, 1997 · N467AT · Boeing 7372T4 · Fuselage Main, Floor BeamSDR 97ZZZM598Intercostal · corrodedFLOORBEAM SUPPORT INTERCOSTAL HAS CORROSION BETWEEN FS 294.5-312 LBL 12. REMOVED INTERCOSTAL AND FABRICATED NEW INTERCOSTAL AND 2 INCH T-ANGLES 17 INCH BY 2 INCH BY 1 INCH FROM 7075 T6 .090. FABRICATED STRAP 15.5 INCH BY 2 INCH. INSTALLED IAW SRM 53-10-2.Jan 19, 1997 · N467AT · Boeing 7372T4 · Fuselage Miscellaneous StructureSDR 97ZZZM597Angle · corrodedINTERIOR LOWER LOBE HAS CORROSION AT E/E CUTOUT FRAME BS 344 BETWEEN STRINGER 29-28L. CORROSION WAS FOUND TO BE BEYOND LIMITS IAW SRM 53-10-1. FABRICATED ANGLE REPAIR OUT OF 7075 T6 .40 9.25 INCH BY 1 INCH BY 1 INCH AND 3 INCH BY 1 INCH BY 1 INCH IAW SRM 37-Jan 15, 1997 · N467AT · Boeing 7372T4 · Fuselage Miscellaneous StructureSDR 97ZZZM619Skin · crackedAIRCRAFT HAS LIGHTNING STRIKE EXIT POINTS AT STATION 663.75 DRAIN HOLE, STATION 907 LAP SEAM, STATION 947.6 RIVET, STATION 1000 AFT LAV SERVICE PANEL AFT LATCH, STATION 1074 FIRE BOTTLE INDICATOR, STATION 1138 APU ACCESS DOOR, STATION 1156 ACCESS DOOR, STATIONJan 14, 1997 · N467AT · Boeing 7372T4 · Fuselage Main, Plate/SkinSDR 97ZZZM592Floorbeam · corrodedAFT CARGO STATION 967 FLOORBEAM HAS CORROSION RBL 45-56. CORROSION WAS FOUND TO BE BEYOND LIMITS IAW SRM 53-10-1. FABRICATED REPAIR ANGLES OUT OF 7075 T6 (1) 6 INCH BY .75 INCH (2) 18 INCH BY 1 INCH (3) .5 INCH BY 19 INCH (4) 1.5 INCH BY 14 INCH IAW EO 97-44Jan 14, 1997 · N467AT · Boeing 7372T4 · Fuselage Main, Floor BeamSDR 97ZZZM616Beam · corrodedAFT UPPER RIGHT HORIZONTAL STAB T/E BEAM HAS EXFOLIATION CORROISON AT ES 1763149 AND SURFACE CORROISON AT ES 44. MATERIAL REMOVAL BEYOND LIMITS IAW SRM 55-20-6. FABRICATED SPLICE CAP FROM 100 INCH 7075 T6 46 INCH BY 1.7 INCH. FABRICATED SPLICE PLATE FROM .0Jan 13, 1997 · N467AT · Boeing 7372T4 · Horizontal Stabilizer StructureSDR SWAA970061Check Valve · failedF/A REPORTED LIGHT MIST (SMOKE) , HOT SMELL AND BURNING EYES IN CABIN. CLEANED HYD RESERVOIR PNEUMATIC CHECK, REPLACED NR 1 AND 2 WATER SEPARATORS BAGS AND RAN BOTH ENGINES PER BOEING M/M, NO DEFECTS NOTED.Jan 12, 1997 · N130SW · Boeing 7372T4 · Hydraulic Pressure Relief Valve, MainSDR SWAA970060Battery · dischargedDURING SCHEDULED TERMINAL CHECK, FOUND AFT SERVICE DOOR EXTERIOR LIGHT INOP. REPLACED BATTERY PACK, LIGHT SOCKET AND LENS COVER PER BOEING M/M.Jan 10, 1997 · N130SW · Boeing 7372T4 · Emergency LightingSDR SWAA970031Skin · crackedDURING SCHEDULED SPECIAL VISIT CHECK, FOUND FUSELAGE SKIN DENTED AT BS 767, S18L. REPAIRED PER BOEING SRM.Jan 2, 1997 · N702ML · Boeing 7372T4 · Fuselage Main, Plate/SkinSDR SWAA970030Skin · crackedDURING SCHEDULED SPECIAL VISIT CHECK, FOUND SKIN CRACKED AT BS 727 PLUS 2, S17L. REPAIRED PER BOEING SRM.Jan 2, 1997 · N702ML · Boeing 7372T4 · Fuselage Main, Plate/SkinSDR SWAA961404Skin · crackedDURING SCHEDULED SERVICE CHECK, FOUND AFT SERVICE DOOR CRACKED AT LOWER HINGE CUTOUT. INSTALLED REPAIR PER BOEING SRM.Dec 23, 1996 · N722WN · Boeing 7372T4 · Fuselage Main, Plate/SkinSDR SWAA961385Control Panel · malfunctionedCLIMBING THROUGH 25,000, CABIN ALTITUDE ALERT SOUNDED. ALL SWITCHES WERE IN NORM POSITIONS, CABIN PRESSURE READ 9,500 FT. AIRCRAFT RETURNED TO MDW AND MADE AN UNEVENTFUL LANDING. REPLACED CABIN PRESSURE CONTROL PANEL PER BOEING M/M.Dec 11, 1996 · N130SW · Boeing 7372T4 · Cabin Pressure Control SystemSDR SWAA961380Chord · crackedDURING SCHEDULED SERVICE CHECK, FOUND BS 727 O/B CHORD AT S18A CRACKED AT FWD AND AFT HOLES. REPLACED PER BOEING SRM.Dec 3, 1996 · N721WN · Boeing 7372T4 · Fuselage Miscellaneous StructureSDR SWAA961346Skin · crackedDURING SCHEDULED C2 CHECK, FOUND FUSELAGE SKIN CRACKED AT BS 807, STRINGER 18L. REPAIRED PER BOEING SRM.Dec 3, 1996 · N702ML · Boeing 7372T4 · Fuselage Main, Plate/SkinSDR SWAA961285Light · inoperativeDURING SCHEDULED TERMINAL CHECK, FOUND FWD SERVICE DOOR OVERHEAD EMERGENCY EXIT LIGHT SIGN INOP. REMOVED AND REPLACED LIGHT ASSEMBLY PER BOEING M/M.Nov 26, 1996 · N721WN · Boeing 7372T4 · Emergency LightingSDR SWAA961322Valve · inoperativeIN ROUTE, I/B ANTI-SKID INOP LIGHT ILLUMINATED. UNABLE TO CONTINUE TO DESTINATION, DIVERTED TO STL AND MADE AN UNEVENTFUL LANDING. REPLACED RIGHT I/B ANTI-SKID VALVE PER BOEING M/M.Nov 23, 1996 · N722WN · Boeing 7372T4 · Brake Anti-Skid SectionSDR SWAA961257Skin · crackedDURING SCHEDULED TERMINAL CHECK, FOUND FUSELAGE SKIN CRACK ON RT SIDE ABOVE WING FAIRING AT BS 750. REPAIRED PER BOEING SRM.Nov 15, 1996 · N702ML · Boeing 7372T4 · Fuselage Main, Plate/SkinSDR SWAA961241Web · crackedDURING SCHEDULED SV CHECK, FOUND CRACK IN WEB, BS 726, STRINGER 18A, LEFT SIDE. REPAIRED PER BOEING M/M.Nov 11, 1996 · N722WN · Boeing 7372T4 · Fuselage Miscellaneous StructureSDR TSAA9627086Nut · looseDURING PREFLIGHT CHECK DISCOVERED, RIGHT AILERON AND TAB DAMAGED. SUBSEQUENT INSPECTION REVEALED NR 8 FLAP TRANSMISSION SPLINED COUPLING RETAINING NUT BACKING OFF CAUSING DAMAGES TO THE ABOVE. REPLACED NR 8 AND NR 7 FLAP TRANSMISSIONS FOR PRECAUTIONARY, TORQNov 7, 1996 · N808AL · Boeing 7372T4 · Trailing Edge Flap Control SystemSDR SWAA961006Air Distr · odorAIRCRAFT DIVERTED TO SDF DUE TO AN ELECTRICAL SMELL OF FUMES IN COCKPIT. CHECKED GASPER AIR FAN AND EQUIPMENT COOLING FANS, J-10 AND J-5 SHIELDS, P6 AND P18 PANELS, COALESER BAGS, E/E COMPARTMENT, RAN ENGINES WITH AC BUSSES AND SYSTEMS POWERED UP PER BOEING MSep 27, 1996 · N722WN · Boeing 7372T4 · Air Distribution SystemSDR SWAA961005Relay · failedAIRCRAFT RETURNED TO IND AND LANDED WITHOUT INCIDENT DUE TO A REPORTED ELECTRICAL SMELL. REPLACED NR 1 TRANSFER BUS RELAY PER BOEING M/M.Sep 26, 1996 · N722WN · Boeing 7372T4 · AC Power Distribution SystemSDR SWAA961011Stringer · crackedDURING SCHEDULED TERMINAL CHECK, FOUND S16R CRACKED AT BS 747. REPAIRED PER BOEING SRM.Sep 25, 1996 · N722WN · Boeing 7372T4 · Fuselage Main, Longeron/StringerSDR TSAA9628076Fuel Shutoff Vlv · inopFLT 302 - HNL-OGG - AFTER TAKEOFF, THE NR 1 FUEL VALVE CLOSED LIGHT ILLUMINATED BRIGHT. ALL ENGINE INDICATIONS REMAINED NORMAL. RETURNED TO HNL. REMOVED AND REPLACED NR 1 ENGINE FUEL SHUTOFF VALVE IAW MM 28-22-11. OPS CHECK GOOD. AIRCRAFT RETURNED TO SERVSep 21, 1996 · N807AL · Boeing 7372T4 · Fuel Selector/Shut-Off ValveSDR SWAA960967Battery · dischargedDURING SCHEDULED A2 CHECK, FOUND EMERGENCY BATTERY PACKS FOR OVERWING LIGHTS WILL NOT HOLD CHARGE. REPLACED BATTERY PACKS PER BOEING M/M.Sep 13, 1996 · N702ML · Boeing 7372T4 · Emergency LightingSDR SWAA960858Skin · crackedDURING SCHEDULED SERV CHECK, FOUND FUSELAGE SKIN CRACKED AT BS 747, S17L. REPAIRED PER BOEING SRM.Aug 21, 1996 · N721WN · Boeing 7372T4 · Fuselage Main, Plate/SkinSDR 96ZZZX5796Fuel Control · malfunctionedAFTER SETTING TAKEOFF THRUST FOR FLT 704, AT APPROX 60 KNOTS, NR 1 ENGINE HAD AN AUTO ACCELERATION AND OVERSPEED. N1 RPM PEGGED AT RED LINE AND EPR WAS NOTED AT 2.22. EGT WAS NOT RECORDED. NR 1 ENGINE THROTTLE WAS RETARDED BUT RPM DID NOT FOLLOW. ENGINE WAJul 29, 1996 · N467AT · Boeing 7372T4 · Fuel Control/Turbine EnginesSDR 96ZZZM1258Hyd Line · chafedA/C RETURNED TO SLC AFTER T/O ON A REPOSITIONING FLIGHT TO BOI WHEN THE NR 1 AND NR 2 'A' SYS HYD PUMP LOW PRESS WARNING LIGHTS ILLUMINATED FOLLOWED BY THE HYDRAULIC QTY LOW LVL LIGHT. THE A/C LANDED W/O INCIDENT BUT HAD TO BE TOWED FROM THE RUNWAY DUE TO LOSJul 26, 1996 · N703S · Boeing 7372T4 · Hydraulic System, MainSDR 96ZZZM1259Battery Pack · low chargeDURING SCHEDULED CHECK, THE AFT SECTION OF EMERGENCY FLOOR TRACK LIGHTING WAS FOUND INOPERATIVE. THE ASSOCIATED SYSTEM BATTERY PACK WAS REPLACED. SUBSEQUENT SYSTEM CHECK WAS SATISFACTORY PER BMM 33-51-11. (M)Jul 11, 1996 · N703S · Boeing 7372T4 · Emergency Lighting
Back to Boeing 737-2T4