# SDR ASAA2019101731297

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 17, 2019
- Submitted: November 13, 2019
- Operation: Air carrier
- Aircraft: [N440AS](https://openairdocs.org/aircraft/N440AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41705
- Aircraft time: 23,707 hours, 7,704 cycles
- Engine: Ge CFM56*
- Engine time: 20,199 hours, 6,523 cycles
- System (JASC): [7220 · Turbine Engine Air Inlet Section](https://openairdocs.org/jasc/7220)
- Part: Engine
- Condition: Corroded
- Location: Left
- 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/ASAA2019101731297

## Discrepancy

#1 ENG INLET AND FAN BLADES- DETAILED INSPT.FOUND 11 EACH NUTPLATES FOR AFT ACOUSTICAL PANELS THAT HAVE CORROSION ON O/B SIDE OF FAN FRAME CASE. ( CORROSION IS ON FAN FRAME CASE). LOCATED AT 3 OCLOCK PANEL, 4 OCLOCK PANEL, 5 OCLOCK PANEL. AND 10 OCLOCK PANEL. ALL NUT PLATES MARKED. GROUNDED - YES. #1 ENGINE REPLACED.

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