# SDR DU4R2006529

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 25, 2006
- Submitted: July 4, 2006
- Operation: Air carrier
- Filed by: [AAR Aircraft Services, LLC, repair station DU4R141M](https://openairdocs.org/faa-repair-station/DU4R141M/aar-aircraft-services-llc.md) (OpenAirDocs)
- Aircraft: N630DL
- Make and model: Boeing 757-200 SERIES
- Registry model: [Boeing 757-200 SERIES](https://openairdocs.org/model/boeing-757-200-series) (OpenAirDocs)
- Aircraft serial: 22920
- Aircraft time: 61,305 hours, 29,686 cycles
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Fitting
- Condition: Corroded
- Location: Bulkhead
- 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/DU4R2006529

## Discrepancy

TWO CORRODED AND ELONGATED HOLES IN TEE CHORD AT AFT PRESSURE BULKHEAD P/N 146N8726U2 AND 146N8722-16 BS 1720 RBL 57.  OVERSIZED 2 EA HOLES AND INSTALLED FREEZE PLUGS IN UPPER HOLE AND INSTALLED OVERSIZED BOLT IN LOWER HOLE, INSTALLED NEW TEE FITTING IAW B757 SRM 51-10-2, 51-40-2, 51-20-67, 51-10-01, 53-80-08 FIG 101 AND BOEING DWG 146N9208.

---
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.