# SDR C77A20150209005

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 9, 2015
- Submitted: February 9, 2015
- Operation: Air carrier
- Aircraft: N748CZ
- Make and model: Emb ERJ 170-100 LR
- Registry model: [EMB ERJ 170-100 LR](https://openairdocs.org/model/embraer-erj-170-100-lr) (OpenAirDocs)
- Aircraft serial: 17000191
- Aircraft time: 18,130 hours, 14,731 cycles
- System (JASC): [5347 · Fuselage, Seat/Cargo Attach Fittings](https://openairdocs.org/jasc/5347)
- Part: Seat Track
- Part number: 17086081005
- Condition: Corroded
- Location: Fuselage
- Part time: 18,130 hours, 14,731 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/C77A20150209005

## Discrepancy

THIS EO IS BEING ISSUED TO PROVIDE INSTRUCTIONS TO ACCOMPLISH THE PERMANENT REPAIR OF CORROSION DAMAGE TO THE AFT CABIN FLOOR STRUCTURE LT AFT SEAT TRACK PN 170-86081-005 AT FRAME 84.  THE APPROX DAMAGE DIMENSIONS ARE AS FOLLOWS 1.45 INCHES X .78 INCH TO A MAXIMUM DEPTH OF .041 INCH DEEP.  BECAUSE THE FLOOR TRACK IS A PSE, ACCOMPLISHMENT OF THIS EO HAS BEEN CLASSIFIED AS A MAJOR REPAIR DUE TO STRENGTH RESTORATION.  THIS IS NOT FCS, BUT REQUIRES FOLLOW UP INSPECTIONS THAT WILL BE ACCOMPLISHED ON EO E170-53MR-025 1 IAW ANAC DER FORM ATTACHED.  TASK 53-23-005-0001 INTERNAL GVI THRESHOLD OF 20,000FC OR 26,600FH, INTERVAL OF 5,099FC OR 6,781FH, IS SUFFICIENT & IS MET USING THE INSPECTION REQUIREMENTS MPG MRBR REVISION NR 9. THRESHOLD IS COUNTED SINCE NEW.  THE REPAIR ACCOMPLISHMENT IS ON EO E170-53MR-025 UNDER WORK ORDER 1560492.

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