# SDR SWAA2021062887534

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 23, 2021
- Submitted: June 28, 2021
- Operation: Air carrier
- Aircraft: [N7820L](https://openairdocs.org/aircraft/N7820L), registered now
- Make and model: Boeing 737-79P
- Registry model: [Boeing 737-79P](https://openairdocs.org/model/boeing-737-79p) (OpenAirDocs)
- Aircraft serial: 28253
- Aircraft time: 52,814 hours, 34,351 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Floor Support
- Condition: Cracked
- Location: Bs 312-328 Rbl34
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2021062887534

## Discrepancy

INTERCOSTAL BETWEEN FS 328 AND 312 RBL 34' HOLE CRACKED. ; / [01] INSTALLED EWIS PROTECTION AT FS 312-328; RBL34' AREA; REF. B737-7 AMM 20-60-07-913-801; [02] VERIFIED EWIS INSTALLATION; [03] REMOVED INTERCOSTAL; LOCATED AND DRILLED NEW INTERCOSTAL FS 312-328; RBL 34'; REF. B737-7 SRM 51-40-05-0G-0 & DRW 141A5400; [04] VERIFIED WORK PERFORMED; [05] OK TO INSTALL INTERCOSTAL; [06] TREATED AND PRIMED FASTENER HOLES REF. B737-7 SRM 51-20-01-0G-0; [07] REMOVED EWIS PROTECTION REF. B737-7 AMM 20-60-07-913-801; [08] VERIFIED EWIS REMOVAL; [09] REMOVED AND REPLACED INTERCOSTAL BETWEEN FS312 TO 328; RBL 34'; REF. B737-7 SRM 51-40-05-0G-0; 51-20-01-0G-0; 51-40-02-0G-0; AND DRW#141A540.

---
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.