# SDR DALA2016042003150

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 8, 2016
- Submitted: April 21, 2016
- Operation: Air carrier
- Aircraft: [N762BC](https://openairdocs.org/aircraft/N762BC), registered now
- Make and model: Boeing 757-26D
- Registry model: [Boeing 757-26D](https://openairdocs.org/model/boeing-757-26d) (OpenAirDocs)
- Aircraft serial: 33966
- Aircraft time: 28,319 hours, 16,502 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Intercostal
- Condition: Corroded
- Location: Bs 1300-1320
- Stage of operation: IN
- 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/DALA2016042003150

## Discrepancy

CORROSION ON AFT CARGO BILGE INTERCOSTAL LOWER FLANGE BETWEEN BS 1300-1320, LBL-3. REMOVED CORROSION AT INTERCOSTAL LOWER FLANGE BETWEEN BS 1300-1320, LBL3.  ORIGINAL MATTERIAL THICKNESS .032-MATTERIAL LOSS: 50 PERCNET =.016", FOUND OUT OF LIMITS IAW SRM 53-00-04, FIG 101, DETAIL II. ALLOWABLE DAMAGE 1 L=3.6", W=1.5" D=.016.  R & R INTERCOSTAL BETWEEN BS 1300-1320, LBL 3 IAW SRM 51-40-02, FIG 4, PG 21, PG 7, PARA 7D AND DWG 146N5399, REV B.

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