# SDR NWAA071509884

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 15, 2007
- Submitted: April 24, 2007
- Operation: Air carrier
- Aircraft: N677MC
- Make and model: Doug DC-9-51
- Registry model: [Doug DC-9-51](https://openairdocs.org/model/mcdonnell-douglas-dc-9-51) (OpenAirDocs)
- Aircraft serial: 47756
- Aircraft time: 61,345 hours, 52,343 cycles
- System (JASC): [5411 · Nacelle/Pylon, Frame/Spar/Rib](https://openairdocs.org/jasc/5411)
- Part: Frame
- Condition: Cracked
- Location: Nr 1 Pylon
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/NWAA071509884

## Discrepancy

DURING ENGINE CHANGE, FOUND CRACKS IN NR 1 PYLON HORIZONTAL WEB FRAME AT XN 39.250.  REPAIRED PER EA 98-209044.

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