# Service difficulty reports: N120UA

A list on [N120UA](https://openairdocs.org/aircraft/N120UA.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 9 · 410 reports

- [SDR CALA2017051501448](https://openairdocs.org/sdr/CALA2017051501448.md): Light · inoperative · May 15, 2017 · N120UA · Boeing 747422 · Emergency Lighting
  > RT OVERWING EMERG EXIT LITE INOP. (ONE LAMP IN ONE LITE ASSY, LOCATED OUTSIDE, ON THE FUSELAGE, THIRD ONE BACK) RELAMPED PER AMM 33-50-96 PAGE BLOCK 401 AND TESTED GOOD.,
- [SDR CALA2017051501447](https://openairdocs.org/sdr/CALA2017051501447.md): Light · inoperative · May 15, 2017 · N120UA · Boeing 747422 · Emergency Lighting
  > EMERG LITE INOP OUTSIDE LAV 100 RT DOOR FRAME. (UPPER OF THE TWO LIGHTS) REPLACED UPPER LED EEL LAMP ON LAV 100. OPS CK GOOD REF AMM 33-5 1-13.
- [SDR CALA2017051501446](https://openairdocs.org/sdr/CALA2017051501446.md): Connector · loose · May 15, 2017 · N120UA · Boeing 747422 · Light System Wiring
  > GREEN EEL STRIP INOP SEAT 52ABC. SECURED LIGHT CONNECTOR AND TESTED GOOD PER AMM 33-50-96-704-006.
- [SDR CALA2017040700897](https://openairdocs.org/sdr/CALA2017040700897.md): Oven · faulty · Apr 7, 2017 · N120UA · Boeing 747422 · Buffet/Galleys
  > WARMING OVEN 409 ELECTRICAL SMELL. REPLACED W43 OVEN WARMER. OPS CHECKED- GOOD. THERE IS NO OVEN WARMER 409. THE LABEL 409 IS NEXT TO THE LABEL W43 WHICH AN ARROW IS POINTING UP THE WARMER OVEN.
- [SDR CALA2017040700911](https://openairdocs.org/sdr/CALA2017040700911.md): Light · loose · Apr 7, 2017 · N120UA · Boeing 747422 · Emergency Lighting
  > EMERGENCY LIGHTS ON CORNER BUMPER AFT OF 1L IS LOOSE/HANGING. SECURED AS REQUIRED.
- [SDR CALA2017040700912](https://openairdocs.org/sdr/CALA2017040700912.md): Fuse · faulty · Apr 7, 2017 · N120UA · Boeing 747422 · Emergency Lighting
  > LEFT, OVERWING EMERGENCY LIGHTS INOP AT BODY FLARING PANEL. FOUND FUSE IN POWER SUPPLY M7919 OPEN, REPLACED FUSE REF SSM 33-51-01.
- [SDR CALA2017011300082](https://openairdocs.org/sdr/CALA2017011300082.md): Wire · broken · Jan 13, 2017 · N120UA · Boeing 747422 · Light System Wiring
  > EMERGENCY LIGHT ROW 51 INOPERATIVE. RERPAIRED WIRES BROKEN ON CONNECTOR UNDER SEAT 51C. OP CHECKED OK IAW AMM33-51-00.
- [SDR CALA2017011300081](https://openairdocs.org/sdr/CALA2017011300081.md): Connector · not seated · Jan 13, 2017 · N120UA · Boeing 747422 · Light System Wiring
  > EMERGENCY LIGHT INOPERATIVE AT ROW 46. FOUND SOCKET PUSHED BACK IN THE LIGHT CONNECTOR, RESEATED THE SOCKET, OPS CHECKED OK.
- [SDR CALA2016072700454](https://openairdocs.org/sdr/CALA2016072700454.md): Sensor · failed · Jul 27, 2016 · N120UA · Boeing 747422 · Landing Gear Position and Warning
  > CREW REPORTS AFTER RAISING GEAR LEVER GEAR DISAGREE & GEAR TILT CAUTION MESSAGES DISPLAYED AND GEAR DID NOT RETRACT. SEVERAL ASSOCIATED STATUS MESSEGES ALSO DISPLAYED. GEAR IS NOW DOWN AND LOCKED WITH NORMAL DOWN INDICATIONS AFTER LT MLG TILT SENSOR REPLACEM
- [SDR CALA2016062895485](https://openairdocs.org/sdr/CALA2016062895485.md): Web · cracked · Jun 27, 2016 · N120UA · Boeing 747422 · Fuselage Miscellaneous Structure
  > RIGHT FLOOR WEB FOUND CRACKED. M-DECK RT STA 140 TO STA 160 CRACKED FLOOR WEB, CRACK LENGTH 2". REPAIRED IAW SRM 53-10-51 REPAIR 7, FIG 201.
- [SDR CALA2016062895484](https://openairdocs.org/sdr/CALA2016062895484.md): Shear Web · cracked · Jun 27, 2016 · N120UA · Boeing 747422 · Fuselage Miscellaneous Structure
  > LEFT BS 1120 TENSION TIE SLOPE SHEAR WEB FOUND CRACKED. STA 1120, LBL 80 SLOPING SHEAR WEB FASTENER HOLE CRACKED AREA, REPAIR IAW SRM 53-40-30, REPAIR 3, FIG 201.
- [SDR CALA2016062895483](https://openairdocs.org/sdr/CALA2016062895483.md): Shear Web · cracked · Jun 27, 2016 · N120UA · Boeing 747422 · Fuselage Miscellaneous Structure
  > RIGHT BS 1120, TENSION TIE AREA 1 EA HOLE FOUND CRACKED AT SLOPING SHEAR WEB, BS 1120. RT SLOPING SHEAR WEB WAS CRACKED. REPAIR IAW SRM 53-40-30, REPAIR 3, FIG 201.
- [SDR CALA2016062895482](https://openairdocs.org/sdr/CALA2016062895482.md): Channel · cracked · Jun 27, 2016 · N120UA · Boeing 747422 · Fuselage Miscellaneous Structure
  > STA 1160, LEFT TENSION TIE 1 EA FASTENER HOLE CRACK AT FORWARD CHANNEL AT 12 O`CLOCK AND 6 O`CLOCK POSITION. STA 1160, LT TENSION TIE FORWARD CHANNEL CRACKED AREA REPAIRED IAW SRM-53-40-30, REPAIR 2, FIG 201.
- [SDR CALA2016062895481](https://openairdocs.org/sdr/CALA2016062895481.md): Channel · cracked · Jun 27, 2016 · N120UA · Boeing 747422 · Fuselage Miscellaneous Structure
  > RIGHT STA 1120, R70 TENSION TIE AREA FOUND 1 EA FASTENER HOLE CRACKED AT FWD CHANNEL LAYER APPROXIMATELY 1-8" IN LENGTH AT 1 O`CLOCK POSTION. BS 1120, FWD AND AFT TENSION TIE CRACKED AREA REPAIRED IAW SRM 53-40-30, FIG 201, REPAIR 1.
- [SDR CALA2016062895480](https://openairdocs.org/sdr/CALA2016062895480.md): Channel · cracked · Jun 27, 2016 · N120UA · Boeing 747422 · Fuselage Miscellaneous Structure
  > RIGHT BS 1180, TENSION TIE FORWARD CHANNEL, 2 EA HOLES FOUND CRACKED. STA 1180, RT TENSION TIE FWD CHANNEL CRACKED AREA REPAIRED IAW SRM 53-40-30, REPAIR 2, FIG 201.
- [SDR CALA2016062895479](https://openairdocs.org/sdr/CALA2016062895479.md): Tension Tie · cracked · Jun 27, 2016 · N120UA · Boeing 747422 · Fuselage Miscellaneous Structure
  > LEFT TENSION TIE, BS 1180, 2EA HOLES FOUND CRACK AT FORWARD CHANNEL. STA 1180, LEFT TENSION TIE FORWARD CHANNEL CRACKED AREA REPAIR IAW SRM 53-40-30, REPAIR 2, FIG 201.
- [SDR CALA2016062895478](https://openairdocs.org/sdr/CALA2016062895478.md): Channel · cracked · Jun 27, 2016 · N120UA · Boeing 747422 · Fuselage Miscellaneous Structure
  > STA 1160 TENSION TIE FORWARD CHANNEL 1 EA FASTENER HOLE FOUND 2 CRACKS AT 6 OCLOCK POSTION. STA 1160 RT TENSION TIE FORWARD & AFT CHANNEL CRACKED AREA REPAIRS IAW SRM 53-40-30, FIG 201, REPAIR 1.
- [SDR CALA2016062895477](https://openairdocs.org/sdr/CALA2016062895477.md): Tension Tie · cracked · Jun 27, 2016 · N120UA · Boeing 747422 · Fuselage Miscellaneous Structure
  > STA 1120, TENSION TIE 2 EA FASTENER HOLE FOUND CRACKED AT FORWARD CHANNEL AT 6 O`CLOCK POSITION APPROXIMATELY 0.060 AND 0.020 LENGTH. STA 1120, LT FORWARD & AFT TENSION TIE FASTENER CRACKED. REPAIRED IAW SRM 53-40-30, FIG 202, REPAIR 1.
- [SDR CALA2016052395413](https://openairdocs.org/sdr/CALA2016052395413.md): Unknown · odor · May 21, 2016 · N120UA · Boeing 747422 · Air Distribution System
  > GATE RETURN DUE TO STRONG ELEC ODOR IN AFT GALLEY AREA. HAVE BEEN UNABLE TO LOCATE SOURCE OF ODOR IN MID AFT GALLEY AREA. ACCOMPLISHED ALL CHECKS IAW FIM, NO DISCREPANCIES FOUND.
- [SDR CALA2015101294583](https://openairdocs.org/sdr/CALA2015101294583.md): Skin · chafed · Oct 12, 2015 · N120UA · Boeing 747422 · Nacelle/Pylon, Plate/Skin
  > NUMBER 1 PYLON SKIN, SUSPECT CRACK & CHAFING AT 452ER ACCESS DOOR CUT OUT. REPAIRED IAW ECRA 5430-02046.
- [SDR CALA2015020293051](https://openairdocs.org/sdr/CALA2015020293051.md): Skin · corroded · Feb 2, 2015 · N120UA · Boeing 747422 · Fuselage Main, Plate/Skin
  > EXT FUSE BS 1700-1720 S43R CORROSION. REMOVED DAMAGE. FABRICATED AND INSTALLED REPAIR PARTS IAW ECRA 5330-05031.
- [SDR CALA2015020293045](https://openairdocs.org/sdr/CALA2015020293045.md): Light · missing · Jan 31, 2015 · N120UA · Boeing 747422 · Emergency Lighting
  > CABIN SEAT 46HK PEELS MISSING. REPLACED THE 46HK SEAT PEELS EMER LIGHT. TEST PASSED IAW AMM 33-51-12.
- [SDR CALA2015020293044](https://openairdocs.org/sdr/CALA2015020293044.md): Cable · broken · Jan 31, 2015 · N120UA · Boeing 747422 · Light System Wiring
  > CABIN LAVATORY 111 EMER LIGHT CABLE BROKEN. REPLACED CABIN LAVATORY 111 EMER LIGHT CABLE & LIGHT TEST FOUND FUNCTION PASSED IAW AMM33-51-00. REPLACED CABIN DOOR NR 4 LH GALLEY EMER LIGHT CABLE & LIGHT TEST PASSED IAW AMM 33-51-00.
- [SDR CALA2014122392865](https://openairdocs.org/sdr/CALA2014122392865.md): Schrader Valve · defective · Dec 23, 2014 · N120UA · Boeing 747422 · Nose/Tail Landing Gear Strut/Axle
  > ON TAKEOFF THE CREW HEARD A LOUD NOISE & THE NOSE GEAR WOULD NOT RETRACT. FOUND NLG STRUT FLAT, CHANGED SHRADER VLV, SERVICED STRUT & DID A GEAR SWING. OPERATIONS CHECKED GOOD.
- [SDR CALA2014060291200](https://openairdocs.org/sdr/CALA2014060291200.md): Pressure Switch · dirty · May 31, 2014 · N120UA · Boeing 747422 · Aircraft Fuel Distribution System
  > NUMBER 4 AFT BOOST PUMP LOW PRESS LIGHTS ARE INOPERATIVE. CLEANED NR 4 AFT BOOST PUMP PRESS SWITCH & LOW PRESS LIGHT. OPERATIONS NORMAL.
- [SDR CALA2014041790859](https://openairdocs.org/sdr/CALA2014041790859.md): Battery Pack · discharged · Apr 17, 2014 · N120UA · Boeing 747422 · Emergency Lighting
  > EEL SLIDE LIGHTS OUT, LT SIDE, LOWER 2 LIGHTS. REPLACED BATTERY PACK IAW MM33-51-00-032-001, MM33-51-00-432-006 & MM33-51-04-902-001. OPERATIONS CHECKED GOOD IAW PARAGRAPH D OF MM33-51-902-001.
- [SDR CALA2014041790858](https://openairdocs.org/sdr/CALA2014041790858.md): Light · inoperative · Apr 17, 2014 · N120UA · Boeing 747422 · Emergency Lighting
  > FLOOR LEVEL EEL LIGHT OUT AT SEAT 35C. REPLACED EEL STRIP, OPERATIONS CHECKED OK.
- [SDR CALA2014030390531](https://openairdocs.org/sdr/CALA2014030390531.md): Unknown · malfunctioned · Mar 1, 2014 · N120UA · Boeing 747422 · Emergency Lighting
  > EMERGENCY LIGHTS ON WHEN SWITCH IN OFF POSITION. SWITCH CYCLED, OPERATIONS CHECKED OK.
- [SDR CALA2014022190429](https://openairdocs.org/sdr/CALA2014022190429.md): Shroud · cracked · Feb 18, 2014 · N120UA · Boeing 747422 · Passenger Compartment Equipment
  > ON CM CHECK FOUND 49F, 40B, 43C, 50K, 56K, 60H & 50J DPCU SHROUD CRACKED. REPLACED & CHECKED OK
- [SDR CALA2013122393867](https://openairdocs.org/sdr/CALA2013122393867.md): Charger · faulty · Dec 20, 2013 · N120UA · Boeing 747422 · Battery/Charger System
  > STANDBY POWER TEST UNSATISFACTORY. BATTERY DISCHARGE APU DOES NOT APPEAR IN EICAS PANEL. REPLACED APU BATTERY CHARGER IAW AMM, OKAY.
- [SDR CALA2013112793300](https://openairdocs.org/sdr/CALA2013112793300.md): Web · cracked · Nov 27, 2013 · N120UA · Boeing 747422 · Fuselage Miscellaneous Structure
  > CABIN L5 DOOR FWD CUTOUT BETWEEN STRINGER 21L & STRINGER 22L WEB CRACKED 2 INCHES. WEB CRACK REPAIRED IAW B747 SRM 53-60-15, REPAIR 3, FIG 201.
- [SDR CALA2013112793299](https://openairdocs.org/sdr/CALA2013112793299.md): Web · cracked · Nov 27, 2013 · N120UA · Boeing 747422 · Fuselage Miscellaneous Structure
  > CABIN R5 DOOR FWD CUTOUT BETWEEN STRINGER 21R & 22R WEB CRACKED. WEB CRACK 1.5" LENGTH. REPAIRED IAW B747SRM 53-60 -15, REPAIR 3, FIG 201.
- [SDR CALA2013112793293](https://openairdocs.org/sdr/CALA2013112793293.md): Seat Track · corroded · Nov 26, 2013 · N120UA · Boeing 747422 · Fuselage, Seat/Cargo Attach Fittings
  > MAIN DECK SEAT TRACK AT ZONE D STATION 1658 TO 1660 RBL 40 SEAT TRACK FOUND CORRODED. CORROSION REPLACES AT BS 1580 TO 1770 RBL 40. CORROSION REMOVED IAW SRM 51-10-02, RECORD BLEND OUT CORROSION DEPTH 0.035", WIDTH 0.9", LENGTH 2". CORROSION BLEND OUT NOT W
- [SDR CALA2013112793292](https://openairdocs.org/sdr/CALA2013112793292.md): Fairing · gouged · Nov 26, 2013 · N120UA · Boeing 747422 · Aerodynamic Fairings
  > ON WALK AROUND FOUND GOUGE IN FUSELAGE BODY FAIRING 191DDL.
- [SDR CALA2013112793288](https://openairdocs.org/sdr/CALA2013112793288.md): Intercostal · corroded · Nov 26, 2013 · N120UA · Boeing 747422 · Fuselage Miscellaneous Structure
  > MAIN DECK FLOOR SUPPORT AT STATION 980, LBL 40 IS CORRODED. CORRODED FLOOR INTERCOSTAL REPAIRED AT BS 940 TO BS 1003 LBL 40, CORROSION REMOVED IAW SRM 51-10-02. RECORD BLEND OUT CORROSION DEPTH 0.032 WIDTH 0.9 INCHES, LENGTH 1.5. CORROSION BLEND OUT NOT WITH
- [SDR CALA2013112693254](https://openairdocs.org/sdr/CALA2013112693254.md): Skin · corroded · Nov 26, 2013 · N120UA · Boeing 747422 · Fuselage Main, Plate/Skin
  > DURING HMV2, FUSELAGE CROWN SKIN INTERNAL SURFACE FOUND CORRODED AT APPROXIMATELY BS 1480 FROM STRINGER 19L - 19R. DAMAGED SKINS SECTIONS WERE REMOVED & NEW FABRICATED SKIN SECTIONS WERE SPLICED IAW ECRA 5331-01788.
- [SDR CALA2013112193168](https://openairdocs.org/sdr/CALA2013112193168.md): Skin · dented · Nov 20, 2013 · N120UA · Boeing 747422 · Landing Gear Doors
  > FOUND DAMAGE, RT OUTER CURVED BODY GEAR DOOR HAS TWO SMALL GOUGES ON ITS OUTER SKIN. REPAIRED IAW ECRA #5280-01534 REV C PART 3.
- [SDR CALA2013111892986](https://openairdocs.org/sdr/CALA2013111892986.md): Floorbeam · corroded · Nov 18, 2013 · N120UA · Boeing 747422 · Fuselage Main, Floor Beam
  > 'B' ZONE FLOORBEAM UPPER TEE FOUND CORRODED AT BS 520 LBL 3 TO RBL 8. FOUND OUT OF LIMITS IAW SRM 53-00-51 ALLOWABLE DAMAGE 1 FIG 101. FLOORBEAM REPAIRED LBL 33 TO RBL 33 IAW SRM 53-10-51 REPAIR 2 FIG 201.
- [SDR CALA2013111892976](https://openairdocs.org/sdr/CALA2013111892976.md): Web · cracked · Nov 16, 2013 · N120UA · Boeing 747422 · Fuselage Miscellaneous Structure
  > RT FLOOR WEB FOUND CRACKED BS 140 - 160. REPAIRED IAW SRM 53-10-51 RPR 7 FIG 201.
- [SDR CALA2013111592956](https://openairdocs.org/sdr/CALA2013111592956.md): Skin · dented · Nov 15, 2013 · N120UA · Boeing 747422 · Fuselage Main, Plate/Skin
  > FX FUSELAGE SKIN DENT FOUND AT RT STATION 370 WL 320 AREA. FUSELAGE SKIN AT STATION 360 TO STATION 380 STRINGER 10R TO STRINGER 10AR DENT MEASURES DEPTH 0.020 X WIDTH X LENGTH 2INCH A=1 Y=0.020 A Y = 50 WITHIN SRM 53-00-01 ALLOWABLE DAMAGE, 1 FIG 101 DETAIL 3
- [SDR CALA2013111392894](https://openairdocs.org/sdr/CALA2013111392894.md): Web · cracked · Nov 13, 2013 · N120UA · Boeing 747422 · Fuselage Miscellaneous Structure
  > MAIN DECK BS 140 - 160 RT FLOOR WEB FOUND CRACKED. REPAIRED IAW SRM 53-10-51 REPAIR 7 FIG 201.
- [SDR CALA2013111392881](https://openairdocs.org/sdr/CALA2013111392881.md): Web · cracked · Nov 13, 2013 · N120UA · Boeing 747422 · Fuselage Miscellaneous Structure
  > LEFT FLOOR WEB FOUND CRACKED. BS 140 - 160. REPAIRED IAW SRM 53-10-51 REPAIR 7 FIG 201.
- [SDR CALA2013111192814](https://openairdocs.org/sdr/CALA2013111192814.md): Shear Web · cracked · Nov 11, 2013 · N120UA · Boeing 747422 · Fuselage Miscellaneous Structure
  > MAIN DECK LT BS 1120 TENSION TIE SLOPE SHEAR WEB FOUND CRACKED. REPAIR IAW SRM 53-40-30 REPAIR 3 FIG 201 & REPAIR DATA MARKED IAW UAL GNMM 1-1-0-7.
- [SDR CALA2013111192813](https://openairdocs.org/sdr/CALA2013111192813.md): Shear Web · cracked · Nov 11, 2013 · N120UA · Boeing 747422 · Fuselage Miscellaneous Structure
  > MAIN DECK RT BS 1120 TENSION TIE AREA ONE EACH HOLE FOUND CRACKED AT SLOPE SHEAR WEB. MAIN DECK BS 1120 RT SLOPING SHEAR WAS CRACKED. REPAIR IAW SRM 53-40-30 REPAIR 3 FIG 201 & REPAIR DATA MARKED IAW UAL GNMM 1- 0-1-7.
- [SDR CALA2013111392900](https://openairdocs.org/sdr/CALA2013111392900.md): Motor · unknown · Nov 10, 2013 · N120UA · Boeing 747422 · Trailing Edge Flap Actuator
  > OTBD TE FLAP ALT DR MOTOR REPLACE IAW TASK CARD 813804030. OTBD TE FLAP ALT DR MOTOR REPLACED IAW TASK CARD 813804030.
- [SDR CALA2013111392899](https://openairdocs.org/sdr/CALA2013111392899.md): Motor · faulty · Nov 10, 2013 · N120UA · Boeing 747422 · Trailing Edge Flap Actuator
  > INBD TE FLAP ALT DR MOTOR REPLACED IAW TASK CARD 813704030.
- [SDR CALA2013111292861](https://openairdocs.org/sdr/CALA2013111292861.md): Channel · cracked · Nov 9, 2013 · N120UA · Boeing 747422 · Fuselage Miscellaneous Structure
  > MAIN DECK BS 1160 LT TENSION TIE FASTENER HOLE CRACKED AT FWD CHANNEL. CHANNEL REPAIRED IAW SRM. REPAIR 2 FIG 201.
- [SDR CALA2013111292860](https://openairdocs.org/sdr/CALA2013111292860.md): Tension Tie · cracked · Nov 9, 2013 · N120UA · Boeing 747422 · Fuselage Miscellaneous Structure
  > MD RT BS 1120 TENSION TIE AREA FOUND ONE FASTENER HOLE CRACK AT FWD CHANNEL LAYER APPROXIMATELY 1-8 IN LENGTH AT 1 O'CLOCK POSITION. TENSION TIE REPAIRED IAW SRM 53-40-30 FIG 201 REPAIR 1.
- [SDR CALA2013111292859](https://openairdocs.org/sdr/CALA2013111292859.md): Channel · cracked · Nov 9, 2013 · N120UA · Boeing 747422 · Fuselage Miscellaneous Structure
  > MAIN DECK RT BS 1180 TENSION TIE FWD CHANNEL TWO EACH HOLES FOUND CRACKED. CHANNEL REPAIRED IAW SRM 53-40-30 REPAIR 2 FIG 201.
- [SDR CALA2013111192771](https://openairdocs.org/sdr/CALA2013111192771.md): Tension Tie · cracked · Nov 9, 2013 · N120UA · Boeing 747422 · Fuselage Miscellaneous Structure
  > MAIN DECK STATION 1160 TENSION TIE FWD CHANNEL ONE EACH FASTENER HOLE FOUND 2 CRACKS AT 6 O'CLOCK POSITION. DETAIL IAW DRAWING. MAIN DECK STATION 1160 RT TENSION TIE FWD & AFT CHANNEL CRACKED AREA REPAIRS IAW SRM 53-40-30 FIG 201 REPAIR 1 & REPAIR DATA MARKE

Next page: https://openairdocs.org/aircraft/N120UA/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 = 'N120UA' AND registry_match = 'registration'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/aircraft/N120UA/reports

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