# Service difficulty reports: N420US, cancelled Jun 27, 2023

A list on [N420US, cancelled Jun 27, 2023](https://openairdocs.org/deregistered/N420US-2023-06-27.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 5 · 206 reports

- [SDR I5EA2021060300001](https://openairdocs.org/sdr/I5EA2021060300001.md): Battery Pack · no test · Jun 3, 2021 · N420US · Boeing 737401 · Emergency Lighting
  > EMERGENCY EXIT LIGHTS OUT ROW 12. REMOVED AND REPLACED BATTERY ASSY PACK IAW AMM B737-400 33-51-51, OPS CHECK GOOD.
- [SDR I5EA2021041700005](https://openairdocs.org/sdr/I5EA2021041700005.md): Power Supply · no test · Apr 17, 2021 · N420US · Boeing 737401 · Emergency Lighting
  > EMERGENCY LIGHTS ON L/H SIDE ISLE FROM ROW 20-24 INOP. PERFORMED T/S AND FOUND BAD POWER SUPPLY (M1197). REMOVED AND REPLACED THE POWER SUPPLY M1197 @STA 960L, PERFORMED OPS CHECK OF EMERGENCY LIGHT SYSTEM IAW WDM 33-51-15 AND B737 AMM 33-51-51 AND 33-51-02.
- [SDR I5EA201910231001](https://openairdocs.org/sdr/I5EA201910231001.md): Indicator · malfunctioned · Oct 21, 2019 · N420US · Boeing 737401 · Engine Indicating System
  > #1 ENGINE EGT SURGE TO 1300'C MULTIPLE TIMES (3 TIMES LESS THAN 1 MINUTE SECOND EACH)
- [SDR I5EA2019030100000](https://openairdocs.org/sdr/I5EA2019030100000.md): Battery · discharged · Mar 4, 2019 · N420US · Boeing 737401 · Emergency Lighting
  > DISCREPANCY: PASSENGER CABIN - DURING EMERGENCY LIGHT TEST, BATTERY ASSY DID NOT SUPPLY ENOUGH POWER. CORRECTIVE ACTION: REMOVED AND REPLACED 1 EACH BATTERY FOR EMERGENCY LIGHTS AND TEST PASSENGER CABIN LIGHTS IAW ALL 33-51-51 PG. 202 PREFORMED OPS CHECK GO
- [SDR I5EA2018090600000](https://openairdocs.org/sdr/I5EA2018090600000.md): Torque Link · broken · Sep 4, 2018 · N420US · Boeing 737401 · Main Landing Gear Strut/Axle/Truck
  > DURING LANDING WHEN REVERSE WAS APPLIED THE AIRCRAFT STARTED SHAKING HARD. REMOVED AND REPLACED LT MLG UPPER TORSION LINK PIN, 69-72023-1, AND LOWER, P/N 65-67693-3, TORQUE LINK PER AMM 32-11-51.
- [SDR I5EA212N20180301](https://openairdocs.org/sdr/I5EA212N20180301.md): Smoke Detector · failed · Mar 22, 2018 · N420US · Boeing 737401 · Smoke Detection
  > AFTER TAKEOFF, CLIMBING THROUGH FL060, AFT CARGO FIRE WARNING ILLUMINATED WITH MASTER WARNING LIGHT. CHECKLIST COMPLIED WITH, BOTTLE DISCHARGED, LANDING ACCOMPLISHED. ACCOMPLISHED A VISUAL INSPECTION OF AFT CARGO COMPARTMENT, NO SMOKE OR FIRE DAMAGE FOUND
- [SDR I5EA2018022001](https://openairdocs.org/sdr/I5EA2018022001.md): Fire Warning · false activation · Feb 11, 2018 · N420US · Boeing 737401 · Smoke Detection
  > CLIMBING THROUGH FL 230, THE AFT CARGO FIRE ALARM WENT OFF, COMPLETED THE CARGO FIRE PROCEDURE IAW QRH, PEFORMED AIR TURNBACK TO DEPARTURE. PERFORMED CARGO FIRE SUPESSION SYSYTEM OPERATIONAL TEST IAW AMM SUPPLEMENTAL DOC. N-0009-01 AND AMM 29-19-00. SYST
- [SDR I5EA2018021500001](https://openairdocs.org/sdr/I5EA2018021500001.md): Fire Warning · activated · Feb 11, 2018 · N420US · Boeing 737401 · Fire Detection
  > CLIMBING THROUGH FL230, AFT CARGO FIRE ALARM WENT OFF, COMPLETED CARGO FIRE PROCEDURE PER QRH, RETURNED TO DEPARTURE AIRPORT.
- [SDR I5EA2017102503](https://openairdocs.org/sdr/I5EA2017102503.md): Battery Pack · discharged · Oct 25, 2017 · N420US · Boeing 737401 · Emergency Lighting
  > LT ROW 6 THROUGH 9 EMERGENCY LIGHTS INOPERATIVE. REMOVED AND REPLACED BATTERY PACK AT STA. 634L, OPERATION TEST GOOD IAW AMM 33-51-51.
- [SDR I5EA2017070500001](https://openairdocs.org/sdr/I5EA2017070500001.md): Battery · discharged · Aug 2, 2017 · N420US · Boeing 737401 · Emergency Lighting
  > EMERGENCY LIGHT WOULD NOT TEST AT ROWS 20 THRU 24. REMOVED AND REPLACED BATTERY AND SYSTEM CHECKS GOOD.
- [SDR I5EA2016033000035](https://openairdocs.org/sdr/I5EA2016033000035.md): Display · burned · Dec 20, 2015 · N420US · Boeing 737401 · Weather Radar System
  > DURING CLIMBOUT, RADAR WAS MAKING POPING NOISE AND CRACKLING NOISES. SMELLED ELECTRICAL, PULLED BOTH RADAR CB'S ON P6 PANEL. REMOVED WEATHER RADAR INDICATING USIT, INSPECTED AND IDENTIFIED SOURCE OF ODOR AND NOISE FROM INSIDE UNIT. REPLACED RADAR INDICATOR
- [SDR I5EA2016040100001](https://openairdocs.org/sdr/I5EA2016040100001.md): Adc · malfunctioned · Nov 4, 2015 · N420US · Boeing 737401 · Outside Air Temperature Indicator/Sensor
  > AT 110 KNOTS CAPTAIN SIDE MACH KNOTS AND ALTIMETER INDICATORS FLAGGED. REFERENCED AND ADHERED TO QRH. BRAKE COOLING SCHEDULE FOR 107K LBS AT 110 KIAS. PERFORMED HIGH ENERGY STOP INSPECTION IAW AMM 05 51 07, PG 201 OBSERVED BREAKS COOLING SCHEDULE. INSPECTE
- [SDR USAA2013092300022](https://openairdocs.org/sdr/USAA2013092300022.md): Skin · cracked · Sep 20, 2013 · N420US · Boeing 737401 · Fuselage Main, Plate/Skin
  > C3 CHECK, FOUND CRACK ON FUSELAGE SKIN AT BS 951, WL 251.77. REPAIRED SKIN IAW SRM 53-60-01-2R-5, FIG 201.
- [SDR USAA2013062500005](https://openairdocs.org/sdr/USAA2013062500005.md): Window · cracked · Jun 24, 2013 · N420US · Boeing 737401 · Door Windows
  > CRACK OBSERVED BY CREW ON OUTSIDE PANE OF PORTHOLE WINDOW IN FWD SERVICE DOOR. PRESSURIZATION IS NORMAL AT FL330. MX REMOVED DOOR MOUNTED WINDOW ON FWD SERVICE DOOR IAW AMM 56-31-00-004-001. INSTALLED FORWARD SERVICE DOOR MOUNTED WINDOW IAW AMM 56-31-00-404-
- [SDR USAA2013062400015](https://openairdocs.org/sdr/USAA2013062400015.md): Lens · missing · Jun 23, 2013 · N420US · Boeing 737401 · Emergency Lighting
  > MX REPORTED SEAT EMERGENCY EXIT LIGHT 4L, 8L, AND 11L LENS MISSING. MX INSTALLED SEAT EMERGENCY EXIT LIGHT LENS AT 4L, 8L AND 11L.
- [SDR USAA2013040400002](https://openairdocs.org/sdr/USAA2013040400002.md): Sliding Window · malfunctioned · Apr 3, 2013 · N420US · Boeing 737401 · Flight Compartment Windows
  > CAPTAIN'S NR 2 WINDOW HAS DELAMINATION IN UPPER RIGHT CORNER AND APPEARS TO HAVE HAD ARCING IN THE BOTTOM LEFT CORNER. MAINTENANCE REMOVED AND REPLACED CAPTAIN'S SLIDING WINDOW IAW AMM 56-12-11, PB 401 AND RIGGING IAW AMM 56-12-11-825-001. ALSO, REMOVED AND
- [SDR USAA2013030400018](https://openairdocs.org/sdr/USAA2013030400018.md): Light · unsecure · Mar 3, 2013 · N420US · Boeing 737401 · Emergency Lighting
  > CREW REPORTED THE SEAT MOUNTED EMERGENCY LIGHT AT ROW 5 NEEDS TO BE RE-SECURED. MAINTENANCE SECURED EMERGENCY LIGHT AT ROW 5. OPS CHECK GOOD.
- [SDR USAA2013010900006](https://openairdocs.org/sdr/USAA2013010900006.md): Faceplate · missing · Jan 9, 2013 · N420US · Boeing 737401 · Emergency Lighting
  > MAINTENANCE REPORTED SEAT 12C EMERGENCY EXIT FACE PLATE MISSING AT FLOOR LEVEL. MAINTENANCE REPLACED 12C EMERGENCY EXIT SIGN - "EXITS" AT FLOOR LEVEL.
- [SDR USAA2013010200016](https://openairdocs.org/sdr/USAA2013010200016.md): Snubber · inoperative · Jan 1, 2013 · N420US · Boeing 737401 · Passenger/Crew Doors
  > MAINTENANCE REPORTED THE MAIN ENTRY DOOR SNUBBER INOPERATIVE. MAINTENANCE REMOVED AND REPLACED SNUBBER ASSEMBLY PER AMM 52-11-71. OPS NORMAL.
- [SDR USAA2012121700010](https://openairdocs.org/sdr/USAA2012121700010.md): Cover · missing · Dec 15, 2012 · N420US · Boeing 737401 · Emergency Lighting
  > CREW REPORTED SEAT 11C MISSING EMERGENCY LIGHT COVER. MAINTENANCE REPLACED COVER.
- [SDR USAA2012111400022](https://openairdocs.org/sdr/USAA2012111400022.md): Wire · broken · Nov 14, 2012 · N420US · Boeing 737401 · Light System Wiring
  > MAINTENANCE REPORTED THE EMERGENCY EXIT LIGHTS INOP AT SEAT ROWS 6 THRU 9. MAINTENANCE REPAIRED WIRING AT ROW 9. OPS CHECKS GOOD.
- [SDR USAA2012111400021](https://openairdocs.org/sdr/USAA2012111400021.md): Placard · missing · Nov 14, 2012 · N420US · Boeing 737401 · Placards and Markings
  > MAINTENANCE REPORTED THE PLACARD MISSING AT EMERGENCY EXIT SEAT SIGN 12ABC. MAINTENANCE INSTALLED REQUIRED PLACARD. CHECKS GOOD.
- [SDR USAA2012110900013](https://openairdocs.org/sdr/USAA2012110900013.md): Skin Panel · cracked · Nov 8, 2012 · N420US · Boeing 737401 · Fuselage Main, Plate/Skin
  > TRIPLE GEAR CHANGE. FUSELAGE SKIN CRACKED AT BS 540 AND S10L. REPAIRED SKIN IAW EA 203643.
- [SDR USAA2012110900012](https://openairdocs.org/sdr/USAA2012110900012.md): Skin Panel · cracked · Nov 8, 2012 · N420US · Boeing 737401 · Fuselage Main, Plate/Skin
  > TRIPLE GEAR CHANGE. FUSELAGE SKIN CRACKED AT BS 907 AND S4L. REPAIRED SKIN IAW EA 203644.
- [SDR USAA2012110800006](https://openairdocs.org/sdr/USAA2012110800006.md): Seat Track · cracked · Nov 8, 2012 · N420US · Boeing 737401 · Fuselage, Seat/Cargo Attach Fittings
  > TRIPLE GEAR CHANGE. LEFT INBOARD SEAT TRACK WEB CRACKED JUST AFT OF FLOORBEAM 727B. REPAIRED WEB IAW B737-400 SRM 53-00-52-2R-4.
- [SDR USAA2012110800005](https://openairdocs.org/sdr/USAA2012110800005.md): Seat Track · cracked · Nov 8, 2012 · N420US · Boeing 737401 · Fuselage, Seat/Cargo Attach Fittings
  > TRIPLE GEAR CHANGE. RIGHT INBOARD SEAT TRACK WEB CRACKED JUST AFT OF FLOORBEAM 727B. REPAIRED WEB IAW B737-400 SRM 53-00-52-2R-4.
- [SDR USAA2012110500006](https://openairdocs.org/sdr/USAA2012110500006.md): Seat Track · cracked · Nov 3, 2012 · N420US · Boeing 737401 · Fuselage, Seat/Cargo Attach Fittings
  > GEAR CHANGE - CRACK IN SEAT TRACK FLANGE AT BS 727B, WL 208.1, RBL 44. REPAIRED SEAT TRACK FLANGE AT BS 727B, WL 208.1, RBL 44 IAW B737 SRM 53-00-52-2R-4.
- [SDR USAA2012092600001](https://openairdocs.org/sdr/USAA2012092600001.md): Cover · missing · Sep 25, 2012 · N420US · Boeing 737401 · Emergency Lighting
  > CREW REPORTED THE EXIT ROW LIGHT COVER MISSING ON EMERGENCY EXIT LIGHT. MAINTENANCE REPLACED EMERGENCY EXIT LIGHT COVER. AIRCRAFT OK FOR SERVICE.
- [SDR USAA2012070300002](https://openairdocs.org/sdr/USAA2012070300002.md): Skin · cracked · Jul 2, 2012 · N420US · Boeing 737401 · Fuselage Main, Plate/Skin
  > C2 CHECK - FUSELAGE SKIN CRACKED AT BS 727E + 4 IN, S23R. REPAIRED SKIN IAW B737 SRM 53-00-01-2R-31 DETAIL XL.
- [SDR USAA2012070600004](https://openairdocs.org/sdr/USAA2012070600004.md): Skin · cracked · Jul 1, 2012 · N420US · Boeing 737401 · Fuselage Main, Plate/Skin
  > C2 CHECK - FUSELAGE SKIN CRACKED AT BS 727G + 4 IN, S24L. REPAIRED SKIN IAW EA 104088.
- [SDR USAA2012062600026](https://openairdocs.org/sdr/USAA2012062600026.md): Megaphone · inoperative · Jun 25, 2012 · N420US · Boeing 737401 · Emergency Equipment
  > MAINTENANCE REPORTED THE AFT MEGAPHONE INOPERATIVE. MAINTENANCE REPLACED THE AFT MEGAPHONE PER AMM 25-64-04.
- [SDR USAA2012061300001](https://openairdocs.org/sdr/USAA2012061300001.md): Placard · missing · Jun 12, 2012 · N420US · Boeing 737401 · Placards and Markings
  > MAINTENANCE REPORTED THE EXIT PLACARD AT ROW 12L MISSING. MAINTENANCE INSTALLED PLACARD. AIRCRAFT OK FOR SERVICE.
- [SDR USAA2012060500001](https://openairdocs.org/sdr/USAA2012060500001.md): Hook · out of adjust · Jun 1, 2012 · N420US · Boeing 737401 · Emergency Equipment
  > CREW REPORTED THE FORWARD ENTRY DOOR GIRT BAR ON LEFT SIDE OF SLIDE PACK WILL NOT HOLD THE BAR. MAINTENANCE ADJUSTED THE GIRT BAR STOWAGE HOOK. OPS CHECK GOOD.
- [SDR USAA2012053000005](https://openairdocs.org/sdr/USAA2012053000005.md): Sign · unsecure · May 29, 2012 · N420US · Boeing 737401 · Emergency Lighting
  > EXIT SIGN ON SEAT 11F A/C LEFT CAME OFF. SECURED EXIT SIGN SEAT 11F, OPS CHECK OK.
- [SDR USAA2012041900002](https://openairdocs.org/sdr/USAA2012041900002.md): Beam · cracked · Apr 17, 2012 · N420US · Boeing 737401 · Fuselage Main, Structure
  > VERTICAL WEB AT RBL 17 HAS 2 CRACKS IN BEAM WEB BELOW WL 234 AT BS 179.25. CUT OUT DOUBLER AND REPLACED DOUBLER AT BS179.25, RBL17 IAW SRM 53-10-08-2R
- [SDR USAA2011120500017](https://openairdocs.org/sdr/USAA2011120500017.md): Handle · missing · Dec 2, 2011 · N420US · Boeing 737401 · Emergency Exits
  > MAINTENANCE REPORTED THE EMERGENCY EXIT WINDOW HANDLE MISSING - NR 2 RIGHT SIDE. MAINTENANCE INSTALLED NEW EMERGENCY EXIT WINDOW HANDLE ON NR 2 RIGHT SIDE. OPS CHECK GOOD.
- [SDR USAA2011110700010](https://openairdocs.org/sdr/USAA2011110700010.md): Placard · missing · Nov 5, 2011 · N420US · Boeing 737401 · Placards and Markings
  > MAINTENANCE REPORTED THE EXIT PLACARD AT ROW 11 MISSING. MAINTENANCE INSTALLED PLACARD. OK FOR SERVICE.
- [SDR USAA2011081500035](https://openairdocs.org/sdr/USAA2011081500035.md): Lens · broken · Aug 13, 2011 · N420US · Boeing 737401 · Emergency Lighting
  > CREW REPORTED ROW 11C EMERGENCY EXIT SIGN BROKEN. MAINTENANCE REPLACED EMERGENCY LIGHT LENS. AIRCRAFT OK FOR SERVICE.
- [SDR USAA2011080800013](https://openairdocs.org/sdr/USAA2011080800013.md): Splice · damaged · Aug 6, 2011 · N420US · Boeing 737401 · Light System Wiring
  > EMERGENCY LIGHTS FOR THE LAST TWO SEAT ROWS WERE FOUND INOPERATIVE. MAINTENANCE REPAIRED BAD SPLICE. ALSO, REPLACED THE BATTERY PACK. OPS CHECK GOOD.
- [SDR USAA2011070600019](https://openairdocs.org/sdr/USAA2011070600019.md): Flap · worn · Jun 29, 2011 · N420US · Boeing 737401 · Trailing Edge Flaps
  > Q6 - LOOSE BUSHINGS INBOARD END ON CARRIAGE ATTACH POINT TRAILING EDGE OF LEFT OUTBOARD FOREFLAP. REPLACED LEFT OUTBOARD FOREFLAP IAW JOB CARD 03C30727030.
- [SDR USAA2011070100032](https://openairdocs.org/sdr/USAA2011070100032.md): Support Tube · corroded · Jun 22, 2011 · N420US · Boeing 737401 · Trailing Edge Flaps
  > CLT - Q6 CHECK - CORROSION ON RIGHT WING INBOARD FLAP OUTBOARD CARRIAGE SUPPORT TUBE. REPLACED RIGHT WING INBOARD FLAP OUTBOARD CARRIAGE SUPPORT TUBE IAW TASK CARD 03C40927004.
- [SDR USAA2011062300001](https://openairdocs.org/sdr/USAA2011062300001.md): Slide · unserviceable · Jun 22, 2011 · N420US · Boeing 737401 · Escape Slide
  > BFM - C3 - AFT ENTRY DOOR EVACUATION SLIDE NEEDS REPLACED DUE TO INFLATION TUBE KINKED. REPLACED AFT ENTRY DOOR EVACUATION SLIDE IAW JOB CARD 03C11052007.
- [SDR USAA2011070600017](https://openairdocs.org/sdr/USAA2011070600017.md): Skin · cracked · Jun 21, 2011 · N420US · Boeing 737401 · Nacelle/Pylon, Plate/Skin
  > Q6 CHECK - CRACK ON NR 2 PYLON SKIN AT PANEL 5828R, BETWEEN NAC STA 220 TO NAC STA 226, RBL 12. REPAIRED NR 2 PYLON SKIN AT PANEL 5828R, BETWEEN NAC STA 220 TO NAC STA 226, RBL 12 IAW TR 737-5430-10-0054.
- [SDR USAA2011070100028](https://openairdocs.org/sdr/USAA2011070100028.md): Skin · cracked · Jun 18, 2011 · N420US · Boeing 737401 · Passenger/Crew Doors
  > CLT - Q6 CHECK - TWO CRACKS IN UPPER HINGE CUTOUT OF FORWARD ENTRY DOOR SKIN AT BS 312, STR 15L. REPAIRED UPPER HINGE CUTOUT OF FORWARD ENTRY DOOR SKIN BS 312, STR 15L IAW EA 103104.
- [SDR USAA2011070600021](https://openairdocs.org/sdr/USAA2011070600021.md): Skin · cracked · Jun 16, 2011 · N420US · Boeing 737401 · Fuselage Main, Plate/Skin
  > Q6 - CRACK ON FUSELAGE SKIN AT BS 303.9, WL 259.88. REPAIRED FUSELAGE SKIN AT BS 303.9, WL 259.88 IAW EA EA 1030022.
- [SDR USAA2011070100031](https://openairdocs.org/sdr/USAA2011070100031.md): Frame · cracked · Jun 16, 2011 · N420US · Boeing 737401 · Fuselage Main, Frame
  > CLT - Q6 - 3/16 INCH CRACK ON FRAME AT WIRE PENETRATION HOLE, BS 500B, BETWEEN STR 20L TO STR 21L. REPAIRED FRAME AT WIRE PENETRATION HOLE, BS 500B, BETWEEN STR 20L TO STR 21L IAW EA 103096, B737-300 SRM 53-00-07, REP 13.
- [SDR USAA2011062900015](https://openairdocs.org/sdr/USAA2011062900015.md): Frame · cracked · Jun 15, 2011 · N420US · Boeing 737401 · Fuselage Main, Frame
  > CLT - Q6 CHECK - CRACK ON FRAME WEB AT BS 303.9, STR 16L. REPLACED FRAME WEB AT BS 303.9, STR 16L IAW EO 5311-01025.
- [SDR USAA2011062900017](https://openairdocs.org/sdr/USAA2011062900017.md): Tie Clip · cracked · Jun 15, 2011 · N420US · Boeing 737401 · Fuselage Miscellaneous Structure
  > CLT - Q6 CHECK - CRACK ON TIE CLIP AT BS 727E, STR 23R. REPLACED TIE CLIP AT BS 727E, STR 23R IAW B737-400 SRM 51-40-02.
- [SDR USAA2011062900016](https://openairdocs.org/sdr/USAA2011062900016.md): Door Frame · cracked · Jun 15, 2011 · N420US · Boeing 737401 · Passenger/Crew Doors
  > CLT - Q6 CHECK - CRACK ON FORWARD ENTRY DOOR AFT FRAME AT NR 6 STOP PIN. REPAIRED FORWARD ENTRY DOOR AFT FRAME AT NR 6 STOP PIN IAW EA 103086.
- [SDR USAA2011070600020](https://openairdocs.org/sdr/USAA2011070600020.md): Skin · cracked · Jun 14, 2011 · N420US · Boeing 737401 · Nacelle/Pylon, Plate/Skin
  > Q6 - CRACK ON FORWARD UPPER CORNER OF PYLON ACCESS (5724L) CUTOUT. REPAIRED FORWARD UPPER CORNER OF PYLON ACCESS (5724L) CUTOUT IAW EA 103051.

Next page: https://openairdocs.org/deregistered/N420US-2023-06-27/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 = 'N420US' AND deregistration_id = 'N420US-2023-06-27'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/deregistered/N420US-2023-06-27/reports

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