# SDR SWAA2021092016392

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 9, 2021
- Submitted: September 20, 2021
- Operation: Air carrier
- Aircraft: [N783SW](https://openairdocs.org/aircraft/N783SW), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29809
- Aircraft time: 68,060 hours, 40,258 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Intercostal
- Condition: Cracked
- Location: Fuselage
- Stage of operation: UK
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2021092016392

## Discrepancy

FWD CABIN FLOOR SUPPORT INTERCOSTAL CRACKED AT FASTENER HOLE LBL-15 BETWEEN STA 380 AND STA 400; WL208.1 ; / [01] INSTALLED EWIS PROTECTION AT MAIN CABIN BETWEEN STA 380 AND STA 400 LBL 1 WL 208.1 REF B737-700 AMM 20-60-07-913-80.; [02] REMOVED INTERCOSTAL AT MAIN CABIN BETWEEN STA 380 AND STA 400 LBL 15 WL 208.1 REF B737-700 SRM 51-40-02-0G-0.; [03] LOCATED AND DRILLED NEW INTERCOSTAL AT MAIN CABIN BETWEEN STA 380 AND STA 400 LBL 15 WL 208.1 REF B737-700 SRM 51-40-05-0G-0 AND DWG# 143A5400.; [04] VERIFIED STEP 1;2 AND 3; [05] OK TO REAT AND PRIME HOLES; [06] TREATED AND PRIMED NEW HOLES REF B737-700 SRM 51-20-01-0G-0.; [07] VERIFIED STEP 6; [08] OK TO INSTALL INSTERCOSTAL; [09] INSTALLED NEW INTERCOSTAL AT MAIN CABIN BETWEEN STA 380 AND STA 400 LBL 15 WL 208.1 REF B737-700 SRM 51-40-02-0G-0 AND DWG# 143A5400.; [10] REMOVED EWIS PROTECTION AT MAIN CABIN BETWEEN STA 380 AND STA 400 LBL 1 WL 208.1 REF B737-700 AMM 20-60-07-913-80.; [11] VERIFIED STEPS 9 AND 10; [12] REMOVED AND REPLACED INTERCOSTAL AT MAIN CABIN BETWEEN STA 380 AND STA 400 LBL 15 WL 208.1 REF B737-700 SRM 51-40-02-0G-0 AND DWG# 143A5400.; [13] VERIFIED STEP 12

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