# SDR FDEA202104210964

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 21, 2021
- Submitted: April 21, 2021
- Operation: Air carrier
- Aircraft: [N602FE](https://openairdocs.org/aircraft/N602FE), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48402
- Aircraft time: 90,010 hours, 22,782 cycles
- Engine: Ge CF680C2D1F
- System (JASC): [7220 · Turbine Engine Air Inlet Section](https://openairdocs.org/jasc/7220)
- Part: Flange
- Condition: Corroded
- Location: Engine Liner
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/FDEA202104210964

## Discrepancy

NR 2 ENGINE HAS SIGNS OF CORROSION ON FAN CASE FWD FLANGE FROM APPROXIMATELY 4   TO 8 O'CLOCK POS. REFERENCE NONROUTINE N00018 WORK ORDER 79912 ITEM  FOUND DURING B-CHECK. CORROSION IS MORE THAN 10 INCHES IN CUMULATIVE CIRCUMFERENCE.  CIRCUMFERENCE.     REF N18 WORK ORDER 79912 ITEM 1 JPF.  REMOVED CORROSION IN REF TO AMM 72-32-00-6-1 REF  N18 WORK ORDER 79912 ITEM 2 JPF. AREA TREATED WITH  PRIMER IN REF TO SRM 51-23-01-0G REF N18 WORK ORDER  79912 ITEM 3 JPF. INNER LINER WAS INSPECTED NO  CORROSION FOUND IN REF TO AMM 72-32-00-6-1

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