# Service difficulty reports that cite it: Boeing SB 737-53-1120

A list on [Boeing SB 737-53-1120](https://openairdocs.org/service-documents/boeing/sb-737-53-1120.md).

Newest first, with the revision each cites, as OpenAirDocs read it from the records’ text. OpenAirDocs read these citations from the records’ text, so one can be misread: check it against the record. A newer revision may exist that no record cites.

Page 1 of 2 · 64 difficulty reports

- [SDR PIDA20050167](https://openairdocs.org/sdr/PIDA20050167.md): Floorbeam · Boeing 737228 · Oct 4, 2005 · N251TR · No revision named
  > CRACK IN RADIUS OF LBL 45.50 FLOORBEAM AT BS 520. REPAIRED PER SB 737-53-1120.
- [SDR PIDA20050168](https://openairdocs.org/sdr/PIDA20050168.md): Floorbeam · Boeing 737228 · Oct 4, 2005 · N251TR · No revision named
  > CRACK IN RADIUS OF RBL 45.50 FLOORBEAM AT BS 520. REPAIRED PER SB 737-53-1120.
- [SDR PIDA20050169](https://openairdocs.org/sdr/PIDA20050169.md): Floorbeam · Boeing 737228 · Oct 4, 2005 · N251TR · No revision named
  > CRACK IN RADIUS OF RBL 24 FLOORBEAM AT BS 520. REPAIRED PER SB 737-53-1120.
- [SDR PIDA20050136](https://openairdocs.org/sdr/PIDA20050136.md): Seat Track · Boeing 737228 · Sep 2, 2005 · N251TR · No revision named
  > SEAT TRACK WEB AT LBL 24 HAS A CRACK AT A RIVET HOLE AT BS 519. REPLACED DAMAGED WEB PER SB 737-53-1120 AND SRM 51-10-1.
- [SDR DL73S031010](https://openairdocs.org/sdr/DL73S031010.md): Floorbeam · Boeing 737232 · Nov 12, 2003 · N330DL · No revision named
  > THE FS 520 FLOORBEAM WAS FOUND WITH 1 INCH TO 2 INCH CRACKS NEAR THE UPPER CAP FLANGE AT RBL & LBL 24 & 45. THE CRACKS WERE TYPICAL OF BAC S/B 737-53-1120. THE UPPER CAP WAS TRIMMED OFF TO REMOVE ALL
- [SDR AWXA200300126](https://openairdocs.org/sdr/AWXA200300126.md): Floorbeam · Boeing 7373G7 · Jan 25, 2003 · N302AW · No revision named
  > YVR - MAJOR REPAIR - DURING C-14 CHECK A.1562 INCH CRACK WAS FOUND EXTENDING BEYOND STOP DRILL HOLE ON FORWARD FACE OF FLOORBEAM AT BS 520. MAINTENANCE CUTOUT MATERIAL FROM FORWARD END OF INTERCOSTAL
- [SDR DL73K011762](https://openairdocs.org/sdr/DL73K011762.md): Beam · Boeing 737232 · Nov 5, 2001 · N322DL · No revision named
  > A CRACK WAS FOUND IN THE RADIUS OF THE UPPER CAP OF THE FS 520 FLOOR BEAM. IT WAS LOCATED AT LBL 24.75. THE CRACK WASREPAIRED PER S/B 737-53-1120 AT HMV.
- [SDR DL73K011310](https://openairdocs.org/sdr/DL73K011310.md): Floorbeam · Boeing 737232 · Aug 10, 2001 · N325DL · No revision named
  > THE FS 520 FLOORBEAM WAS FOUND CRACKED AT RBL & LBL 24. THE CRACKS ARE TYPICAL S/B 737-53-1120. THE CRACKS WERE STOP DRILLED AND REPAIRED PER THE S/B. THE DAMAGE WAS FOUND AT HMV.
- [SDR USAA010558](https://openairdocs.org/sdr/USAA010558.md): Floorbeam · Boeing 737201 · May 18, 2001 · N247US · No revision named
  > CLT - FOUND FLOORBEAM T-CAP CRACKED, BS 520, RBL 25, WL 208. INSTALLED DOUBLER AND PIVOT LINK ASSY PER SB 737-53-1120 AND EA 69537. (M)
- [SDR 2001F00188](https://openairdocs.org/sdr/2001F00188.md): Floorbeam · Boeing 7372H4 · May 1, 2001 · N29SW · No revision named
  > FOUND FLOORBEAM FOUND CRACKED AT BS 520 RBL 25 WL 208. THE DAMAGED AREA WAS REPAIRED IAW SB 737-53-1120. (M)
- [SDR AWXA0001298](https://openairdocs.org/sdr/AWXA0001298.md): Floorbeam · Boeing 737277 · Feb 8, 2001 · N180AW · No revision named
  > UPPER CHORD, FWD FACE OF FLOORBEAM AT BS 520 HAS A CRACK EXTENDING THROUGH PREVIOUS STOP DRILL. REMOVED PREVIOUS REPAIR; CUT OUT PREVIOUS REPAIR; FABED DOUBLERS, T-CAP AND STRAPS; DRILLED, DEBURRED, T
- [SDR USAA010088](https://openairdocs.org/sdr/USAA010088.md): Beam · Boeing 737201 · Jan 29, 2001 · N251AU · No revision named
  > CLT - FOUND BEAM CRACKED 1.5 INCH, STATION 520, LBL 24. REPAIRED DOUBLER PER SB 737-53-1120. (M)
- [SDR USAA010089](https://openairdocs.org/sdr/USAA010089.md): Beam · Boeing 737201 · Jan 29, 2001 · N251AU · No revision named
  > CLT - FOUND BEAM CRACKED 1.3 INCH, STATION 520-540, LBL 45.5. REPAIRED DOUBLER PER SB 737-53-1120. (M)
- [SDR USAA010090](https://openairdocs.org/sdr/USAA010090.md): Beam · Boeing 737201 · Jan 29, 2001 · N251AU · No revision named
  > CLT - FOUND BEAM CRACKED 1.8 INCH, STATION 520, RBL 45.5. REPAIRED DOUBLER PER SB 737-53-1120. (M)
- [SDR USAA001586](https://openairdocs.org/sdr/USAA001586.md): Floorbeam · Boeing 737201 · Sep 27, 2000 · N262AU · No revision named
  > CLT - FOUND FLOORBEAM CRACKED 1 INCH, BS 520 LBL 24. COLLECTOR KIT INSTALLED PER SB 737-53-1120, EA 67976 BOEING DWG. (M)
- [SDR USAA001587](https://openairdocs.org/sdr/USAA001587.md): Floorbeam · Boeing 737201 · Sep 27, 2000 · N262AU · No revision named
  > CLT - FOUND FLOORBEAM CRACKED 1 INCH, BS 520 RBL 24. COLLECTOR KIT INSTALLED PER EA 67976 SB 737-53-1120 BOEING DWG. (M)
- [SDR USAA001588](https://openairdocs.org/sdr/USAA001588.md): Floorbeam · Boeing 737201 · Sep 27, 2000 · N262AU · No revision named
  > CLT - FOUND 1 INCH CRACK, BS 520 LBL 45. COLLECTOR KIT INSTALLED PER EA 67976 SB 737-53-1120, BOEING DWG. (M)
- [SDR AWXA0000670](https://openairdocs.org/sdr/AWXA0000670.md): Seat Track · Boeing 737277 · Sep 25, 2000 · N178AW · No revision named
  > C-CHECK, NR 3 SEAT TRACK ATTACH ANGLE AT STA 520 BROKEN OFF. REMOVED DAMAGED ATTACH ANGLE, FABRICATED NEW ATTACH ANGLE IAW B737 DWG 69-41691, PRIMED IAW 737 MM 51-21-00, INSTALLED IAW EO 53-14-12 AND
- [SDR AWXA0000671](https://openairdocs.org/sdr/AWXA0000671.md): Floorbeam · Boeing 737277 · Sep 25, 2000 · N178AW · No revision named
  > C-CHECK, STA 520 RBL 24.75 FLOORBEAM UPPER FLANGE CRACKED, PREVIOUSLY REPAIRED. REPAIRED IAW EO 53-14-12 AND SB 737-53-1120.
- [SDR AWXA0000673](https://openairdocs.org/sdr/AWXA0000673.md): Floorbeam · Boeing 737277 · Sep 25, 2000 · N178AW · No revision named
  > C-CHECK, STA 520 RBL 24.75 FLOOR TRACK VERTICAL WEB CRACKED. REMOVED DAMAGED WEB, FABRICATED NEW WEB AS PER B737 DWG 69-41691, TREATED AND PRIMED IAW MM 51-21-00, INSTALLED IAW EO 53-14-12V AND SB 737
- [SDR USAA000901](https://openairdocs.org/sdr/USAA000901.md): Support Bracket · Boeing 7372B7 · Jul 3, 2000 · N281AU · No revision named
  > CLT - FOUND VERT SUPPORT CRACKED.500 INCHES, BS 520, BL 0. INSTALLED REPAIR PER EA 67536 AND SB 737-53-1120. (M)
- [SDR DL73K001008](https://openairdocs.org/sdr/DL73K001008.md): Floorbeam · Boeing 737232 · May 23, 2000 · N303DL · No revision named
  > A 2.2 INCH CRACK WAS FOUND AT RBL 24.75 IN THE VERTICAL WEB OF THE FS 520 FLOORBEAM. ADDITIONALLY, A CHANNEL ON THE AFT SIDE OF THE BEAM AT LBL 24.75 WAS FOUND TO HAVE A.5 INCH CRACK. THE CHANNEL WAS
- [SDR USAA000706](https://openairdocs.org/sdr/USAA000706.md): Floorbeam · Boeing 7372B7 · May 15, 2000 · N278AU · No revision named
  > CLT - Q-4, FLOORBEAM HAD 1.5 INCH CRACK, BS 520 AND RBL 45.5. INSTALLED NEW DOUBLER AND CHANNEL PER SB 737-53-1120 AND EA67167. (X)
- [SDR USAA000707](https://openairdocs.org/sdr/USAA000707.md): Floorbeam · Boeing 7372B7 · May 15, 2000 · N278AU · No revision named
  > CLT - Q-4, FLOORBEAM HAD 1.5 INCH CRACK, BS 520 AND RBL 24.75. REPLACED REPAIR ANGLE PER EA 67167 AND SB 737-53-1120. (X)
- [SDR USAA000231](https://openairdocs.org/sdr/USAA000231.md): Channel · Boeing 737201 · Feb 22, 2000 · N260AU · No revision named
  > CLT - CHANNEL HAS A 2 INCH CRACK AT BS 520 RBL 25 WL 206. INSTALLED PIVOT LINK PER SB 737-53-1120. (M)
- [SDR P2EA00044](https://openairdocs.org/sdr/P2EA00044.md): Floorbeam · Boeing 737222 · Jan 28, 2000 · N603DJ · No revision named
  > SJO - DURING Q-CHECK, FOUND FLOORBEAM CRACKED AT BS 520, LBL 45 AND WL 208. REPAIRED FLOORBEAM FROM LBL 40.5 TO LBL 50.5 IAW SB 737-53-1120, SECTION III, PART VI, FIG 28 AND FOG 29 DATED MAY 13, 1993.
- [SDR USAA991115](https://openairdocs.org/sdr/USAA991115.md): Floorbeam · Boeing 7373B7 · Oct 16, 1999 · N508AU · No revision named
  > CLT - DURING Q-4 CHECK VISUAL INSPECTION, FOUND A 1 INCH CRACK AT BS 520, LBL 24.75 IN RADIUS FORWARD SIDE OF FLOORBEAM. INSTALLED DOUBLER, FILLER AND REPAIR ANGLES PER EA 65721 AND SB 737-53-1120. (M
- [SDR USAA991116](https://openairdocs.org/sdr/USAA991116.md): Floorbeam · Boeing 7373B7 · Oct 16, 1999 · N508AU · No revision named
  > CLT - DURING Q-4 CHECK VISUAL INSPECTION, FOUND A 1 INCH CRACK AT BS 520, LBL 45.5 IN RADIUS FORWARD SIDE OF FLOORBEAM. INSTALLED DOUBLER, FILLER AND REPAIR ANGLES PER EA 65721 AND S/B 737-53-1120. (M
- [SDR USAA990914](https://openairdocs.org/sdr/USAA990914.md): Floorbeam · Boeing 737301 · Sep 27, 1999 · N342US · No revision named
  > CLT - DURING Q-2 CHECK VISUAL INSPECTION, FOUND A 1 INCH CRACK AT BS 520, LBL 24 CABIN FLOORBEAM UPPER CHORD. STOP DRILLED CRACK AND INSTALLED DOUBLER PER EA 65271 AND SB 737-53-1120. (X)
- [SDR USAA990915](https://openairdocs.org/sdr/USAA990915.md): Floorbeam · Boeing 737301 · Sep 27, 1999 · N342US · No revision named
  > CLT - DURING Q-2 CHECK VISUAL INSPECTION, FOUND A 1 INCH CRACK AT BS 520, LBL 47 CABIN FLOORBEAM UPPER CHORD. STOP DRILLED CRACK AND INSTALLED DOUBLER PER EA 65271 AND SB 737-53-1120. (X)
- [SDR USAA990916](https://openairdocs.org/sdr/USAA990916.md): Floorbeam · Boeing 737301 · Sep 27, 1999 · N342US · No revision named
  > CLT - DURING Q-2 CHECK VISUAL INSPECTION, FOUND A 2 INCH CRACK AT BS 520, RBL 47 CABIN FLOORBEAM UPPER CHORD. STOP DRILLED CRACK AND INSTALLED DOUBLER PER EA 65271 AND SB 737-53-1120. (X)
- [SDR USAA990434](https://openairdocs.org/sdr/USAA990434.md): Floorbeam · Boeing 737301 · May 12, 1999 · N336US · No revision named
  > CLT - DURING Q-6 CHECK VISUAL INSPECTION, FOUND A.5 INCH CRACK AT BS 520 LBL 46 FLOORBEAM. FABRICATED REPAIRED PER EA 64448 AND S/B 737-53-1120. (M)
- [SDR USAA980684](https://openairdocs.org/sdr/USAA980684.md): Floorbeam · Boeing 737301 · Jan 25, 1999 · N334US · No revision named
  > CLT - DURING Q-6 CHECK VISUAL INSPECTION, FOUND A 1 INCH LONG CRACK IN FLOORBEAM STATION 520 RBL 25. INSTALLED DOUBLERS AND FILLERS PER SB 737-53-1120 FIG 28 EA 63326. (M)
- [SDR USAA980685](https://openairdocs.org/sdr/USAA980685.md): Floorbeam · Boeing 737301 · Jan 25, 1999 · N334US · No revision named
  > CLT - DURING Q-6 CHECK VISUAL INSPECTION, FOUND A 1 INCH LONG CRACK IN FLOORBEAM STATION 520 RBL 45. INSTALLED DOUBLERS AND FILLERS PER SB 737-53-1120 AND EA 63326. (M)
- [SDR USAA990024](https://openairdocs.org/sdr/USAA990024.md): Floorbeam · Boeing 737301 · Jan 25, 1999 · N334US · No revision named
  > CLT - DURING Q-6 CHECK VISUAL INSPECTION, FOUND A.20 INCH CRACK STATION 520 LBL 25 FLOORBEAM. INSTALLED DOUBLER AND REPAIR ANGLES PER EA 63326, SB 737-53-1120. (M)
- [SDR USAA980570](https://openairdocs.org/sdr/USAA980570.md): Floorbeam · Boeing 737301 · Nov 13, 1998 · N335US · Revision 1
  > CLT - DURING Q-5 CHECK VISUAL INSPECTION, FOUND A 1.5 INCH CRACK STATION 520 RBL 24.75 FLOORBEAM. INSTALLED DOUBLER PER EA 62987 AND SB 737-53-1120 REV 1. (M)
- [SDR USAA980571](https://openairdocs.org/sdr/USAA980571.md): Floorbeam · Boeing 737301 · Nov 13, 1998 · N335US · Revision 1
  > CLT - DURING Q-5 CHECK VISUAL INSPECTION, FOUND A 1.5 INCH CRACK STATION 520 LBL 24.75 FLOORBEAM. INSTALLED DOUBLER PER EA 62987 AND SB 737-53-1120 REV 1. (M)
- [SDR USAA980454](https://openairdocs.org/sdr/USAA980454.md): Floorbeam · Boeing 7372B7 · Sep 30, 1998 · N269AU · Revision 1
  > CLT - DURING Q-1 CHECK HFEC INSPECTION, FOUND.25 INCH CRACK BS 520 RBL 45 FLOORBEAM 'T' CAP RADIUS. INSTALLED REPAIR ANGLES PER EA 62449 BOEING SB 737-53-1120 REV 1. (M)
- [SDR USAA980455](https://openairdocs.org/sdr/USAA980455.md): Floorbeam · Boeing 7372B7 · Sep 30, 1998 · N269AU · Revision 1
  > CLT - DURING Q-4 CHECK HFEC INSPECTION, FOUND A 1.5 INCH CRACK BS 520 WL 208 RBL 24 FLOORBEAM. INSTALLED REPAIR ANGLES PER EA 62449 SB 737-53-1120 REV 1. (M)
- [SDR USAA980456](https://openairdocs.org/sdr/USAA980456.md): Floorbeam · Boeing 7372B7 · Sep 30, 1998 · N269AU · Revision 1
  > CLT - DURING Q-4 CHECK HFEC INSPECTION, FOUND A 1.5 INCH CRACK BS 520 WL 208 LBL 24 FLOORBEAM. INSTALLED REPAIR ANGLE PER EA 62449 SB 737-53-1120 REV 1 PART VI. (M)
- [SDR DL73E972301](https://openairdocs.org/sdr/DL73E972301.md): Floorbeam · Boeing 7372J8 · Nov 10, 1997 · N235WA · No revision named
  > FLOORBEAM AT FS 520 WAS FOUND CRACKED AT RBL 25 AND LBL 45. REPAIRED PER SB 737-53-1120, R 1.
- [SDR DL73K972122](https://openairdocs.org/sdr/DL73K972122.md): Floorbeam · Boeing 737232 · Oct 21, 1997 · N322DL · No revision named
  > THE FLOORBEAM AT BS 520 WAS FOUND CRACKED AT RBL 25. CRACKING FOUND IS TYPICAL OF THAT DESCRIBED IN SB 737-53-1120 (R1). REPAIR PER SB 737-53-1120 AUTHORIZED BY DELTA ER/A 330883-14.
- [SDR DL73S971931](https://openairdocs.org/sdr/DL73S971931.md): Floor Beam · Boeing 737232 · Sep 26, 1997 · N327DL · Revision 1
  > THE STATION 520 FLOORBEAM WAS FOUND CRACKED AT THE FOLLOWING LOCATIONS: RBL 45, RBL 25, LBL 25 AND LBL 45. THE CRACKS ARE TYPICAL OF THOSE FOUND IN BACO S/B 737-53-1120 REV 1. THE FLOOR BEAM IS FABRIC
- [SDR DL73K971886](https://openairdocs.org/sdr/DL73K971886.md): Floorbeam · Boeing 737232 · Sep 12, 1997 · N318DL · Revision 1
  > THE STATION 520 FLOORBEAM HAS DAMAGE IN THE TYPICAL LOCATIONS AT BOTH LBL 24.75 AND LBL 45.5. THE BEAMS ARE M/F FROM BAC1518-338, 7075-T6511 EXTRUSION. SUBMITTER STATES, THIS IS A GROUP 3 A/C PER S/B
- [SDR DL73E970834](https://openairdocs.org/sdr/DL73E970834.md): Floorbeam · Boeing 737247 · Apr 25, 1997 · N379DL · Revision 1
  > STA 520 HAS DAMAGE ON THE FLOORBEAM, 1.5 CRACK ON BOTH THE LEFT INBD AND RT INBD SEAT TRACK LOCATION. BOTH THE CRACKS ARE IN THE RADIUS AND EXTEND INBD AND OUTBD. THIS IS A GROUP 3 A/C PER S/B 737-53-
- [SDR USAA970121](https://openairdocs.org/sdr/USAA970121.md): Floor Beam · Boeing 7372B7 · Apr 3, 1997 · N284AU · No revision named
  > INT - DURING 'Q-3' CHECK VISUAL AND EDDY CURRENT INSPECTIONS, FOUND 2 INCH CRACKED FLOOR BEAM AT STA 520 RBL 24. INSTALLED REPAIR, REPAIRED PER SB 737-53-1120 AND EA 42226. (X)
- [SDR USAA970123](https://openairdocs.org/sdr/USAA970123.md): Floor Beam · Boeing 7372B7 · Apr 3, 1997 · N284AU · No revision named
  > INT - DURING 'Q-3' CHECK VISUAL AND EDDY CURRENT INSPECTIONS, FOUND 2 INCH CRACK AT FLOOR BEAM STA 520 LBL 24. INSTALLED REPAIR, REPAIRED PER SB 737-53-1120 AND EA 42226. (X)
- [SDR AWXA9600762](https://openairdocs.org/sdr/AWXA9600762.md): Floorbeam · Boeing 737277 · Dec 7, 1996 · N179AW · Revision R1
  > DURING ROUTINE MAINTENANCE CHECK, FOUND CRACK FROM STOP DRILL HOLE OUTBOARD BS 520, LBL 24.75, WL 208. STOP DRILLED CRACK FROM HOLE WL 208, LBL 24.75. NDI VERIFICATION OF CRACK CONTAINMENT PER D6-3723
- [SDR USAA960649](https://openairdocs.org/sdr/USAA960649.md): Support Channel · Boeing 737201 · Sep 27, 1996 · N224US · No revision named
  > INT - DURING Q-3 CHECK VISUAL INSPECTION, FOUND.5 INCH CRCK RBL 45 SEAT TRACK SUPPORT CHANNEL ABOVE UPPER INBOARD BOLT. INSTALLED DOUBLERS, REPAIRED PER EA 41455 AND SB 737-53-1120. (M)
- [SDR ASAA9610028](https://openairdocs.org/sdr/ASAA9610028.md): Floor Beam · Boeing 737290C · Mar 8, 1996 · N742AS · No revision named
  > SEA - DURING D-CHECK, A CRACK WAS FOUND IN THE RADIUS OF THE UPPER FLANGE TO WEB OF THE FLOOR BEAM AT BS 520, RBL 24.75. REPAIRED PER EA 5320-01260 AND BOEING SB 737-53-1120. (M)

Next page: https://openairdocs.org/service-documents/boeing/sb-737-53-1120/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 s.sdr_id, s.difficulty_date, s.aircraft_make, s.aircraft_model, s.part_name, string_agg(DISTINCT c.revision, ', ' ORDER BY c.revision) AS revisions,
  bool_or(c.incorporated_by_reference) AS incorporated_by_reference, bool_or(c.in_regulatory_text) AS in_regulatory_text
FROM 'https://openairdocs.org/data/latest/service_document_citation.parquet' c JOIN 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet' s ON s.sdr_id = c.record_id
WHERE c.document_id = 'boeing/sb-737-53-1120' AND c.record_type = 'faa_service_difficulty_report'
GROUP BY ALL
ORDER BY max(c.record_date) DESC
```

This list as a web page: https://openairdocs.org/service-documents/boeing/sb-737-53-1120/reports

---
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