# SDR C77A201312230004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 20, 2013
- Submitted: December 23, 2013
- Operation: Air carrier
- Aircraft: N621CZ
- 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: 17000218
- Aircraft time: 16,052 hours, 9,125 cycles
- System (JASC): [4910 · APU Cowling/Containment](https://openairdocs.org/jasc/4910)
- Part: Firewall
- Part number: 17050263401
- Condition: Cracked
- Location: Apu Bay
- Part time: 16,052 hours, 9,125 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/C77A201312230004

## Discrepancy

APU RT FIREWALL PANEL 351BZ CRACKED ON TOP & BOTTOM OF FLANGE.  ROUTED CRACKS OUT & PERFORMED NDT VERIFYING NO MORE CRACKING EXISTS IAW ETD 2013-170-066678 & EA E175-53-401 REV IR.

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