# SDR 97ZZZM421

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 2, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N221US](https://openairdocs.org/aircraft/N221US), registered now
- Make and model: Boeing 737-2H5
- Registry model: [Boeing 737-2H5](https://openairdocs.org/model/boeing-737-2h5) (OpenAirDocs)
- Aircraft serial: 20454
- System (JASC): [5311 · Fuselage Main, Frame](https://openairdocs.org/jasc/5311)
- Part: Frame
- Condition: Cracked
- Location: Bs 1156
- Part time: 60,094 hours
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/97ZZZM421

## Discrepancy

LEFT OUTBOARD CHORD ANGLE CRACKED STATION 1156 WL 274, .75 INCH CRACK.  REPAIRED PER EO 5391G569.

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