# SDR C77A2020031800013

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 19, 2018
- Submitted: March 18, 2020
- Operation: Air carrier
- Aircraft: [N602CZ](https://openairdocs.org/aircraft/N602CZ), registered now
- 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: 17000171
- Aircraft time: 3,118 hours, 18,662 cycles
- System (JASC): [5420 · Nacelle/Pylon Miscellaneous Structure](https://openairdocs.org/jasc/5420)
- Part: Heat Shield
- Part number: 17100107425
- Condition: Cracked
- Location: Lt Pylon
- 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/C77A2020031800013

## Discrepancy

AIRCRAFT 602CZ WAS AOG IN SJC DUE TO THE DISCOVERY OF CRACKS ON THE LH ENGINE PYLON AFT FAIRING #5 HEAT SHIELD (REF ETD2018-170-093210A, FIGURES 1-3). COMPASS AIRLINES REQUESTED AND RECEIVED RELIEF IN THE FORM OF ETD2018-170-093210 WHICH PROVIDES A 750FC FLY-BY PROVIDED THE FOLLOWING IS ACCOMPLISHED: ACCOMPLISH A DET INSPECTION FOR ANY ADDITIONAL DAMAGE, STOP DRILL THE CRACK DAMAGE, ACCOMPLISH AN NDT HFEC INSPECTION OF THE REPAIR WITHIN 50FC TO CONFIRM CRACK REMOVAL, ACCOMPLISH A DET INSPECTION EVERY 50FC, AND ACCOMPLISH THE PERMANENT REPAIR WITHIN THE 750FC FLY-BY. DURING ONE OF THE REPEAT DET INSPECTIONS A 3RD CRACK (REF ETD2018-170-093210A, FIGURES 4-5) WAS FOUND WHICH TERMINATES AT A RIVET. COMPASS AIRLINES REPORTED THE ADDITIONAL DAMAGE AND RECEIVED RELIEF IN THE FORM OF ETD2018-170-093210A WHICH ALLOWS THE 750FC FLY-BY TO CONTINUE FROM SEPTEMBER 2ND,2018 WITH THE ADDITIONAL DAMAGE. COMPASS ENGINEERING HAS CLASSIFIED THIS REPAIR AS A MINOR REPAIR. WORK ORDER 2522768

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