# SDR TWAA9908903

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 23, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N979Z](https://openairdocs.org/aircraft/N979Z), registered now
- Make and model: Doug DC-9-31
- Registry model: [Doug DC-9-31](https://openairdocs.org/model/douglas-dc-9-31) (OpenAirDocs)
- Aircraft serial: 47343
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Stiffener
- Part number: 9911503167
- Condition: Cracked
- Location: Bs 69.5
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/TWAA9908903

## Discrepancy

DURING OP 16 MAINT CHECK, FOUND COCKPIT VERTICAL STIFFENER NUMBER 9911503-167 WAS CRACKED IN THE RADIUS APPROXIMATELY 1.5 INCH LONG, APPROX 2 INCHES BELOW TOP OF STIFFENER AT STA 69.5, AFT SIDE OF BULKHEAD ON X=-12 ON RT SIDE.  MADE UP DOUBLER AND INSTALLED PER ARA 13513.

---
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.