# SDR COMA9710496

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 12, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N156CA](https://openairdocs.org/aircraft/N156CA), registered now
- Make and model: Emb EMB-120RT
- Registry model: [EMB EMB-120RT](https://openairdocs.org/model/embraer-emb-120rt) (OpenAirDocs)
- Aircraft serial: 120156
- System (JASC): [5411 · Nacelle/Pylon, Frame/Spar/Rib](https://openairdocs.org/jasc/5411)
- Part: Frame
- Part number: 12040443001
- Condition: Cracked
- Location: Lt Nacelle
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/COMA9710496

## Discrepancy

DURING 1C INSPECTION, TASK 419-012 REVEALED A CRACK IN LEFT NACELLE UPPER HALF FRAME.  THE CRACK WAS .52 LONG AND STARTED AT A NUTPLATE FASTENER.  THE NUTPLATE IS ONE OF FOUR INSTALLED TO ATTACH THE EXHAUST DUCT MOUNT BRACKET.  REPAIRED HALF-FRAME USING AERODESIGN REPORT 2524-2.

---
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.