# Service difficulty reports: N171UA A list on [N171UA](https://openairdocs.org/aircraft/N171UA.md). Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first. Page 1 of 6 · 293 reports - [SDR CALA2015102094602](https://openairdocs.org/sdr/CALA2015102094602.md): Battery Pack · discharged · Oct 17, 2015 · N171UA · Boeing 747422 · Emergency Lighting > PER A CHECK, SEAT EMERGENCY EXIT LIGHT FROM 45 RT - 53 RT, DIM. REPLACED BATTERY PACK DOOR 4L. OPERATIONS CHECKED GOOD. - [SDR CALA2015102094601](https://openairdocs.org/sdr/CALA2015102094601.md): Light · missing · Oct 17, 2015 · N171UA · Boeing 747422 · Emergency Lighting > PER A CHECK, SEAT EMERGENCY EXIT LIGHT AT 45R, MISSING. REPLACED SEAT EMERGENCY EXIT LIGHT AT 45R. OPERATIONS CHECKED OK. - [SDR CALA2015102094600](https://openairdocs.org/sdr/CALA2015102094600.md): Light · inoperative · Oct 17, 2015 · N171UA · Boeing 747422 · Emergency Lighting > PER A CHECK, MID GALLEY RT EMERGENCY EXIT LIGHT INOPERATIVE. RELAMPED & OPERATIONS CHECKED OK. - [SDR CALA2015040793506](https://openairdocs.org/sdr/CALA2015040793506.md): Connector · disconnected · Apr 6, 2015 · N171UA · Boeing 747422 · Light System Wiring > ROW 19 ABC ELECTRO LUMINESCENT EEL INOPERATIVE. FOUND CONNECTOR DISCONNECTED. SECURED CONNECTOR. OPERATIONS CHECKED OK. - [SDR CALA2014110792669](https://openairdocs.org/sdr/CALA2014110792669.md): Cable · damaged · Nov 7, 2014 · N171UA · Boeing 747422 · Light System Wiring > NUMBER 4 DOOR GALLEY SIDEWALL LT EMER LIGHT FOUND INOPERATIVE. REPLACED THE CABLE OF THE EMER LIGHT AT SEAT 45AC. OPERATIONS CHECKED GOOD IAW AMM 33-51-12 REV 170. - [SDR CALA2014110792668](https://openairdocs.org/sdr/CALA2014110792668.md): Connector · disconnected · Nov 7, 2014 · N171UA · Boeing 747422 · Light System Wiring > SEAT NUMBER 45AC EMER LT FOUND INOPERATIVE. RECONNECTED THE CONNECTOR OF THE EMER LIGHT AT SEAT 45AC & TEST FOUND TO PASS IAW AMM 33-51-12 REV 170. - [SDR CALA2014072291510](https://openairdocs.org/sdr/CALA2014072291510.md): Wire · damaged · Jul 19, 2014 · N171UA · Boeing 747422 · Light System Wiring > ESCAPE PATH LIGHT INOPERATIVE AT ROW 45ABC. REPAIRED WIRING, LIGHTS CHECKED NORMAL. - [SDR CALA2014061391276](https://openairdocs.org/sdr/CALA2014061391276.md): Battery · discharged · Jun 12, 2014 · N171UA · Boeing 747422 · Emergency Lighting > UPPER DECK LT DOOR UPPER EMER EXIT LIGHT IS INOPERATIVE. REPLACED BATTERY POWER PACK. OPERATIONS CHECK OK. - [SDR CALA2014061391275](https://openairdocs.org/sdr/CALA2014061391275.md): Light · inoperative · Jun 11, 2014 · N171UA · Boeing 747422 · Emergency Lighting > STAIRWAY EEL LIGHT IS INOPERATIVE. ORDERED EEL BATTERY, PCN 585-4495. - [SDR CALA2013122693952](https://openairdocs.org/sdr/CALA2013122693952.md): Cradle · broken · Dec 25, 2013 · N171UA · Boeing 747422 · Interphone/Passenger Announcement (PA) System > PHONE CRADLE DOOR 4L IS BROKEN. REPAIRED CRADLE, SYS CHECKED GOOD. - [SDR CALA2013121993814](https://openairdocs.org/sdr/CALA2013121993814.md): Trim Panel · broken · Dec 17, 2013 · N171UA · Boeing 747422 · Emergency Lighting > ON CM8401 CHECK FOUND LAVATORY 102 AFT SIDE EMERGENCY EXIT LIGHTS TRIM BROKEN. SIDE TRIM REPLACED & CHECKED NORMAL. - [SDR CALA2013121693692](https://openairdocs.org/sdr/CALA2013121693692.md): Lug · unsecure · Dec 10, 2013 · N171UA · Boeing 747422 · Light System Wiring > IAW STANDBY POWER CHECK, AFT DOME LIGHT INOPERATIVE. WIRES DISCONNECTED FROM LIGHT ASSEMBLY L137. SECURED LUGS TO TERMINALS, OPERATIONS CHECKED OKAY. - [SDR CALA2013112293195](https://openairdocs.org/sdr/CALA2013112293195.md): Seat Belt · defective · Nov 21, 2013 · N171UA · Boeing 747422 · Flight Compartment Equipment > POSITION 1 FLIGHT CREW BELT WILL NOT LOCK. CROTCH STRAP WILL NOT LOCK. REPLACED CROTCH CAPTAIN SEAT BELT, FUNCTION IS BACK TO NORMAL. - [SDR CALA2013111993069](https://openairdocs.org/sdr/CALA2013111993069.md): Skin · damaged · Nov 19, 2013 · N171UA · Boeing 747422 · Fuselage Main, Plate/Skin > RT FUSELAGE SKIN HAS EVIDENCE OF DAMAGE AT STATION 1980 NEAR BULK CARGO DOOR FWD EDGE APPROXIMATELY ONE FOOT UPWARD FROM FWD LOWER CORNER. CHECKED DAMAGE AREA NO CRACK FOUND, DAMAGE THAT EXCEEDS THE ALLOWABLE SRM LIMITS WILL BE REPAIRED ON CF, IAW GMM05-30-05 - [SDR CALA2013111993068](https://openairdocs.org/sdr/CALA2013111993068.md): Skin · damaged · Nov 19, 2013 · N171UA · Boeing 747422 · Fuselage Main, Plate/Skin > ACFT FWD CARGO DOOR AFT SIDE OF FUSELAGE DAMAGED APPROXIMATELY 36 IN FROM BOTTOM OF DOOR WAY, 1 1-2 INCHES WIDE BY 6 INCHES LONG. COMPLIED WITH ECRA 5321-01878. HFEC ACCOMPLISHED NO FAULTS FOUND IAW PTT 6362020, IAW ECRA 5330-04741. REMOVED DAMAGE, HFEC FABR - [SDR CALA2013111892979](https://openairdocs.org/sdr/CALA2013111892979.md): Tripler · corroded · Nov 16, 2013 · N171UA · Boeing 747422 · Fuselage Main, Plate/Skin > RT FUSELAGE AT WASTE SYSTEM OVERBOARD VENT HOLE, TRIPLER HAS EXTERNAL CORROSION STATION 2090, STRINGER 35R TO STRINGER 36R. REMOVED DAMAGE PARTS & INSTALLED NEW TRIPLER IAW SRM53-60-01 RPR 1, REV 87 & ECRA 5330-04755. - [SDR CALA2013111892978](https://openairdocs.org/sdr/CALA2013111892978.md): Floorbeam · corroded · Nov 16, 2013 · N171UA · Boeing 747422 · Fuselage Main, Floor Beam > CABIN MAIN DECK FLOOR BEAM HAS CORROSION AT STATION 1660, LBL 11 TO LBL 33 ON UPPER CHORD. CUTOUT DAMAGED UPPER CHORD & INSTALLED NEW SECTION IAW SRM53-60-51, RPR 1, NR 0388315. - [SDR CALA2013111892977](https://openairdocs.org/sdr/CALA2013111892977.md): Floorbeam · corroded · Nov 16, 2013 · N171UA · Boeing 747422 · Fuselage Main, Floor Beam > CABIN DECK FLOOR BEAM UPPER CORD HAS CORROSION AT STATION 1700, LBL 1". CUTOUT DAMAGE & INSTALLED NEW SECTION IAW SRM 53-60-51 RPR1 NR 0388763. - [SDR CALA2013111592957](https://openairdocs.org/sdr/CALA2013111592957.md): Floorbeam · corroded · Nov 15, 2013 · N171UA · Boeing 747422 · Fuselage Main, Floor Beam > BS 1780 LBL 4 FLOOR BEAM CORROSION, REMOVED DAMAGE. HFEC MANUFACTURED & INSTALLED REPAIR PARTS IAW SRM 53-60-51 REPAIR 1. - [SDR CALA2013101892177](https://openairdocs.org/sdr/CALA2013101892177.md): Wire · damaged · Oct 18, 2013 · N171UA · Boeing 747422 · Flight Control System Wiring > "STAB TRIM" STATUS MESSAGE DISPLAYED UPON T TRIMMING STAB NOSE UP WITH "ALTERNATE STAB TRIM SWITCHES" ON PEDESTAL. CMC SHOWS MESSAGE 27147. WITH NR 2 CUTOUT SW ENGAGED ONLY NR 3 IN CUTOUT POS STAB TRIM FAILS TO MOVE TO THE NOSE UP POSITION WITH "ALTERNATE ST - [SDR CALA2013082990846](https://openairdocs.org/sdr/CALA2013082990846.md): Control Panel · faulty · Aug 27, 2013 · N171UA · Boeing 747422 · Weather Radar System > WEATHER RADAR WILL NOT TEST. FOUND MESSAGE 34010. REPLACED WEATHER RADAR CONTROL PANEL, IAW FIM & AMM. SYSTEM CHECKED GOOD. - [SDR CALA2013081690490](https://openairdocs.org/sdr/CALA2013081690490.md): Seal · failed · Aug 15, 2013 · N171UA · Boeing 747422 · Engine (Turbine/Turboprop) > NR 4 ENGINE IDG HAS BAD SEAL TO GEARBOX. - [SDR CALA2013081290356](https://openairdocs.org/sdr/CALA2013081290356.md): Structure · cracked · Aug 12, 2013 · N171UA · Boeing 747422 · Cargo/Baggage Doors > FORWARD CARGO DOOR DENTED AND CRACKED 12" FROM AFT EDGE AND BOTTOM OF CARGO DOOR. IAW ECRA 5230-01927 NEED TO ACP PERMANENT SRM SKIN REPAIR WITHIN 3 A-C CYCLES (PTC 10693 MAX) IAW SRM 52-30-01, REPAIR 2. DVI REPAIR AREA IS TO BE ACP PRIOR TO EACH DEPARTURE C - [SDR UALA2013071604979](https://openairdocs.org/sdr/UALA2013071604979.md): Battery · inoperative · Jul 15, 2013 · N171UA · Boeing 747422 · Emergency Lighting > SEAT 44 RT TO 53 RT, SEAT EMERGENCY LIGHT INOPERATIVE. REPLACED M6011 BATTERY. OPS CHECKED OK. - [SDR UALA2013071604978](https://openairdocs.org/sdr/UALA2013071604978.md): Light · unknown · Jul 15, 2013 · N171UA · Boeing 747422 · Emergency Lighting > REPLACED SEAT EMERGENCY LIGHT AT SEAT 19 RT. PERFORMED INSPECTION, NO DEFECTS FOUND. - [SDR UALA2013071604977](https://openairdocs.org/sdr/UALA2013071604977.md): Light · inoperative · Jul 15, 2013 · N171UA · Boeing 747422 · Emergency Lighting > DURING "A" CHECK, SEAT 25 LEFT, EMERGENCY LIGHT INOPERATIVE. REPLACED EMERGENCY LIGHT. OPS CHECKED OK. PERFORMED INSPECTION. NO DEFECTS FOUND. - [SDR UALA2013071604976](https://openairdocs.org/sdr/UALA2013071604976.md): Light · missing · Jul 15, 2013 · N171UA · Boeing 747422 · Emergency Lighting > DURING "A" CHECK, SEAT 19 RT, EMERGENCY LIGHT MISSING. REPLACED. OPS CHECKED OK. - [SDR UALA2013071604975](https://openairdocs.org/sdr/UALA2013071604975.md): Connector · broken · Jul 15, 2013 · N171UA · Boeing 747422 · Light System Wiring > DURING "A" CHECK, SEAT 56 LEFT, EMERGENCY LIGHT INOPERATIVE. FOUND BROKEN CONNECTOR AT EMERGENCY LIGHT, REPLACED. OPS CHECKED OK. PERFORMED EMERGENCY LIGHT INSPECTION. NO DEFECTS FOUND. - [SDR UALA2013050203085](https://openairdocs.org/sdr/UALA2013050203085.md): Light · inoperative · May 2, 2013 · N171UA · Boeing 747422 · Emergency Lighting > UPPER DECK SIDEWALL EEL STRIP ACROSS FROM SEATS 12JK INOP. - [SDR UALA2013050203084](https://openairdocs.org/sdr/UALA2013050203084.md): Light · inoperative · May 2, 2013 · N171UA · Boeing 747422 · Emergency Lighting > SEATS 48ABC EEL STRIP INOP. REPLACED EEL STRIP. OP'S CHECKED GOOD. ACCOMPLISHED IDT INSPECTION OF THE EEL STRIP REPLACEMENT, OPS CHECK GOOD. - [SDR UALA2013050203083](https://openairdocs.org/sdr/UALA2013050203083.md): Light · inoperative · May 2, 2013 · N171UA · Boeing 747422 · Emergency Lighting > DOOR 4L SLIDE LIGHT INOPERATIVE. REPLACED LIGHT ASSY OP'S CHECKED GOOD. ACCOMPLISHED IDT INSP OF THE EEL LIGHT ASSY, OPS CHECK GOOD. - [SDR UALA2013050203082](https://openairdocs.org/sdr/UALA2013050203082.md): Light · inoperative · May 2, 2013 · N171UA · Boeing 747422 · Emergency Lighting > UPPER DECK EXIT SIGN OVER STAIRS INOP. RELAMPED CHECKED GOOD. ACCOMPLISHED IDT INSP OF THE RELAMPING OF THE EEL LIGHT, OPS CHECK GOOD. - [SDR UALA2013040202152](https://openairdocs.org/sdr/UALA2013040202152.md): Lamp · inoperative · Apr 1, 2013 · N171UA · Boeing 747422 · Emergency Lighting > UPPER DECK EMERGENCY DOOR LEFT GROUND MODE INDICATION LIGHT INOPERATIVE. RELAMPED EMERGENCY LIGHT. - [SDR UALA2013040102065](https://openairdocs.org/sdr/UALA2013040102065.md): Angle · damaged · Mar 29, 2013 · N171UA · Boeing 747422 · Landing Gear Doors > RIGHT OUTBOARD BODY DOOR SEAL MISSING A PORTION. INSPECTION FOUND 2 INCHES OF FWD SEAL GAP ANGLE BROKEN. VISUAL INSPECTED DAMAGED ANGLE, SEAL AND ADJACENT AREA. NO ADDITIONAL DAMAGE IS PRESENT. GEAR DOOR AND FUSELAGE STRUCTURE NO DAMAGE. REMAINING SECTION - [SDR UALA2013020800768](https://openairdocs.org/sdr/UALA2013020800768.md): Feeder Cable · damaged · Feb 7, 2013 · N171UA · Boeing 747422 · Light System Wiring > L4 GALLEY EMERGENCY LIGHT INOPERATIVE. REPAIRED FEEDER CABLE, OPS CHECKED OK. - [SDR UALA2013020800767](https://openairdocs.org/sdr/UALA2013020800767.md): Light · failed · Feb 7, 2013 · N171UA · Boeing 747422 · Emergency Lighting > R2 DOOR EMERGENCY SLIDE LIGHT INOPERATIVE. REPLACED LIGHT ASSY AND OP CHECKED GOOD. - [SDR UALA2013020800766](https://openairdocs.org/sdr/UALA2013020800766.md): Light · inoperative · Feb 7, 2013 · N171UA · Boeing 747422 · Emergency Lighting > ROW 33ABC SEAT EMERGENCY LIGHT INOPERATIVE. REPLACED LIGHT AND ACCOMPLISHED OPS TEST PER MM, TESTED GOOD. - [SDR UALA2013012300399](https://openairdocs.org/sdr/UALA2013012300399.md): Pump · leaking · Jan 21, 2013 · N171UA · Boeing 747422 · Hydraulic Pump (Electric/Engine), Main > FLIGHT LOST ALL NR 1 HYDRAULICS ABOUT 30 MINUTES OUT. FLIGHT RETURNED. EMERGENCY DECLARED. NR 1 HYD EDP FOUND HEAVY LEAKAGE. NR 1 ENG EDP REPLACED. TUBE REPAIRED PER GNMM 1-0-13-020. SWAGE UNION INSTALLED AT HYD TUBE IN BS 1200 LT FUSELAGE. NO LEAK FOUND - [SDR UALA2013010200014](https://openairdocs.org/sdr/UALA2013010200014.md): Spoiler · departed · Dec 31, 2012 · N171UA · Boeing 747422 · Drag Control System > LEFT INBOARD SPOILER FELL OFF WHEN FLAPS EXTENDED. REMOVED AND REPLACED LEFT I/B SPOILER REF MM 27-62-01. PERFORMED GENERAL VISUAL INSPECTION OF LEFT AND RIGHT WINGS FUSELAGE AFT OF WINGS AND TAIL SECTION. REF PTT2642031 FOUND SMALL DENT ON LEFT SIDE OF VER - [SDR UALA2012121907286](https://openairdocs.org/sdr/UALA2012121907286.md): Power Supply · faulty · Dec 17, 2012 · N171UA · Boeing 747422 · Emergency Lighting > EMERGENCY EXIT LIGHT FLOOR STRIP FLASHING INTERMIT BY SEATS 19, 20, 21 AND 22C. REPLACED EEL LIGHT ASSY AT SEAT 19C AND PWR SUPPLY M6003 ABOVE DOOR 2L. REF SSM 33-51-03 WD 33-51-33 AND IPC 33-51-04. OPS CHECK OK. - [SDR UALA2012121207164](https://openairdocs.org/sdr/UALA2012121207164.md): Rod · worn · Dec 12, 2012 · N171UA · Boeing 747422 · Landing Gear Door Retract Section > VIBRATION FROM MAIN GEAR RETRACTION REPORTED ON TAKEOFF. FLIGHT CREW WILL FILL OUT VIBRATION REPORT EVEN THOUGH EVERYTHING NORMAL IN FLT DECK CABIN ATTENDANT REPORTED VIBRATION FROM 4R MODERATE TO HEAVY VIBRATION DURING GEAR RETRACTION AND STOPPED WITH GEAR F - [SDR UALA2012112806808](https://openairdocs.org/sdr/UALA2012112806808.md): Ballast · faulty · Nov 28, 2012 · N171UA · Boeing 747422 · Passenger Compartment Lighting > ELECTRICAL ODOR UPPER DECK STAIRWAY LIGHT. CHECKED FOUND THE ODOR IS FROM THE LIGHT L2976, REMOVED THE LIGHT L2976 AND DEACTIVATED BALLAST M7564, SO THE LIGHT L2977 IS INOP ALSO. PLZ REF TO WDM 33-29-21. DF DUE TIME. FOUND ONE OF THE LAMP SOCKETS BURNT AND - [SDR UALA2012120406968](https://openairdocs.org/sdr/UALA2012120406968.md): Socket · defective · Nov 28, 2012 · N171UA · Boeing 747422 · Passenger Compartment Lighting > ELECTRICAL ODOR UPPER DECK STAIRWAY LIGHT. CHECKED FOUND THE ODOR IS FROM THE LIGHT L2976, REMOVED THE LIGHT L2976 AND DEACTIVATED BALLAST M7564, SO THE LIGHT L2977 IS INOP. FOUND ONE OF THE LAMP SOCKETS BURNT AND CRACKED. - [SDR UALA2012112606759](https://openairdocs.org/sdr/UALA2012112606759.md): Connector · not seated · Nov 26, 2012 · N171UA · Boeing 747422 · Light System Wiring > EMERGENCY LIGHT STRIP AT 1L IS INOPERATIVE. UNABLE TO DUPLICATE PROBLEM, RESEAT CONNECTION, EEL SYSTEM TESTED NORMAL. - [SDR UALA2012112606758](https://openairdocs.org/sdr/UALA2012112606758.md): Connector · not seated · Nov 26, 2012 · N171UA · Boeing 747422 · Light System Wiring > EEL DOOR 2L FLICKERS UNABLE TO DUPLICATE PROBLEM. RESEAT CONNECTION, ALL CHECKS NORMAL. - [SDR UALA2012102306066](https://openairdocs.org/sdr/UALA2012102306066.md): Cable · unsecure · Oct 23, 2012 · N171UA · Boeing 747422 · Equipment/Furnishings Wiring > BEFORE PUSHBACK FLT ATTENDANT REPORT AFT GALLEY ONE PIGTAIL CABLE INOP. RE-SECURED CABLE OKAY. - [SDR UALA2012100205576](https://openairdocs.org/sdr/UALA2012100205576.md): Trim Panel · damaged · Oct 1, 2012 · N171UA · Boeing 747422 · Emergency Lighting > ON CM CHECK FOUND LAV 101 LEFT DOOR SIDE EEL PLASTIC TRIM LOWER DAMAGE. SIDE TRIM REPLACED. - [SDR UALA2012100205577](https://openairdocs.org/sdr/UALA2012100205577.md): Sealant · displaced · Sep 30, 2012 · N171UA · Boeing 747422 · Fuel Storage > FUEL LEAKING UNDER WING JUST OUTBOARD OF NR 2 ENGINE FWD PYLON, FUEL LEAK UNDER WING RUNNING TO FUSELAGE. FOUND FUEL LEAKING FROM UPPER OR 2ND FROM TOP BOLT ON PYLON LINK BRACKET, ABOVE PANEL 521AB. ARROW POINTS TO LEAKING BOLT, SEALANT PARTIALLY REMOVED FRO - [SDR UALA2012093005538](https://openairdocs.org/sdr/UALA2012093005538.md): Light · inoperative · Sep 29, 2012 · N171UA · Boeing 747422 · Emergency Lighting > DOOR 5L THRESHOLD EEL LIGHT INOP. RELAMPED, OP CHECKED OK. - [SDR UALA2012093005539](https://openairdocs.org/sdr/UALA2012093005539.md): Connector · unsecure · Sep 29, 2012 · N171UA · Boeing 747422 · Light System Wiring > ROW 19ABC EEL LIGHTS INOPERATIVE. SECURED UNDERSEAT PLUG, OP CHECKED OK. Next page: https://openairdocs.org/aircraft/N171UA/reports.md?page=2 ## 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 = 'N171UA' AND registry_match = 'registration' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/aircraft/N171UA/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.