# SDR C2XA05SH139

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 18, 2005
- Submitted: December 21, 2005
- Operation: Air carrier
- Aircraft: N13553
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145585
- Aircraft time: 8,632 hours, 6,757 cycles
- Engine: Allsn AE3007A
- System (JASC): [4910 · APU Cowling/Containment](https://openairdocs.org/jasc/4910)
- Part: Firewall
- Part number: 14526850401
- Condition: Cracked
- Location: Aft Fuselage
- 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/C2XA05SH139

## Discrepancy

DURING C-CHECK MAINTENANCE FOUND APU FIREWALL CRACKED ON THE INSIDE, BETWEEN STRINGERS 9R AND 10R AT THE 3 O'CLOCK POSITION.  MAINTENANCE INSTALLED REPAIR DOUBLER ON APU FIREWALL IAW SRM 53-32-13 FIG 204.  AIRCRAFT WAS APPROVED TO RETURN FOR SERVICE.

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