# SDR C77A20140128010

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 28, 2014
- Submitted: January 28, 2014
- Operation: Air carrier
- Aircraft: N623CZ
- Make and model: Emb ERJ 170-200 LR
- Registry model: [EMB ERJ 170-200 LR](https://openairdocs.org/model/embraer-s-a-erj-170-200-lr) (OpenAirDocs)
- Aircraft serial: 17000221
- Aircraft time: 16,341 hours, 9,299 cycles
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Firewall
- Part number: 17050263401
- Condition: Cracked
- Location: Fuselage
- Part time: 16,341 hours, 9,299 cycles
- 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/C77A20140128010

## Discrepancy

APU FIREWALL PANEL 351BZ, PN 170-50263-401 HAS CRACKS ON TOP & BOTTOM OF FLANGE.  UPPER FLANGE CRACK L 0.500 INCHES LOWER FLANGE CRACK L 0.400 INCHES X 28868.0.  ROUTED CRACK OUT & NDT PERFORMED VERIFYING NO MORE CRACKING EXISTS ON WORK ORDER 738174-316 IAW ETD 2014-170-007037 & EA E175-53-405 REV IR WORK ORDER 1401779.

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