# SDR SWAA2025022089840

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 26, 2025
- Submitted: February 20, 2025
- Operation: Air carrier
- Aircraft: [N7723E](https://openairdocs.org/aircraft/N7723E), registered now
- Make and model: Boeing 737-76N
- Registry model: [Boeing 737-76N](https://openairdocs.org/model/boeing-737-76n) (OpenAirDocs)
- Aircraft serial: 32670
- Aircraft time: 58,504 hours, 30,432 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Intercostal
- Condition: Cracked
- Location: Zone 100
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2025022089840

## Discrepancy

DOT A24-77 FORWARD PIT. VERTICAL INTERCOSTAL AT STATION 480+15 BETWEEN STRINGERS 23L AND 25L CRACKED AT UPPER EDGE.  BLENDED DAMAGE IAW SRM 51-10-02-0G-0.  FOUND ADJACENT TO BLEND .040'; LOSS .007'; REMAINING .033' USING NDT TO VERIFY IN STEP 5.  UPON FURTHER INVESTIGATION FOUND INTERCOSTAL TO BE OUT OF LIMITS IAW SRM 53-00-04-1A-1<BR>UT IAW B737 NDT PART 4; 51-00-00 PROC 2. ADJACENT TO BLEND .040'; LOSS .007'; REMAINING .033'.  REMOVED; LOCATED & DRILL HOLES NEW FORMED ANGLE IAW SRM 51-40-05-0G-0 AND SRM SRM 51-40-02-0G-0<BR><BR>PERFORMED COMFORMITY INSPECTION OF NEW PART AND VERIFIED INTERCOSTAL P/N 143A9403-14 COMFORME TO SPECIFICATIONS FOUND IN BOEINGDWG 143A9403 REV:-.  MIX SEALANT 870 B 1/2 APPLIED FAY SEAL TO INTERCOSTAL AT 2.00 PM SQUEEZE -OUT 1/2 HRS CURE TIME 20 HRS AND INSTALLED INTERCOSTAL ALL FASTENERS BEFORE SQUEEZE OUT TIME IAW SRM 51-40-02-0G-0 AND DWG 143A7550 REV: A.

---
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.