# SDR UIEA2011021100062

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 11, 2011
- Submitted: February 15, 2011
- Operation: Air carrier
- Aircraft: N355MC
- Make and model: Boeing 747341
- Aircraft serial: 23395
- Aircraft time: 74,044 hours, 14,432 cycles
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Bulkhead
- Condition: Cracked
- Location: Bs 400
- 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/UIEA2011021100062

## Discrepancy

THE PURPOSE OF THIS EO IS TO DOCUMENT A REPAIR PERFORMED ON THE DATUM ACFT AT SIAE DURING A D-CHECK. SIAE REPORTED A CRACK IN THE BS 400 BULKHEAD LOWER WEB ASSY PRESSURE PAN. THE CRACKED WEB WAS TRIMMED AND REPAIRED BY INSTALLING A STACK-UP OF 2 DOUBLERS AND 2 FILLERS.

---
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.