# SDR TWAA0100908

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 1, 2001
- Submitted: January 15, 2001
- Operation: Air carrier
- Aircraft: N9403W
- Make and model: Doug DC-9-83
- Registry model: [Doug DC-9-83](https://openairdocs.org/model/douglas-dc-9-83) (OpenAirDocs)
- Aircraft serial: 53139
- Aircraft time: 25,057 hours, 12,178 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Casting
- Condition: Cracked
- Location: Fuselage
- 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/TWAA0100908

## Discrepancy

DURING CHECK-C MAINT AT STA 845, LBL 58, CASTING WAS CRACKED BELOW FLOOR AT FUSELAGE FORMER TO FLOORBEAM TIE, LT.  INSTALLED NEW CASTING PER DOUGLAS DRAWING 3920341 AND SPM 6-70-01.  INSTALLED HI-LOKS PER SRM 51-60-0 PAGE 36 FIG 4 PIN SUBSTITUTION TABLE AND PER SRM 51-3-0 PAGE 12 HI-LOK INSTALLATION.  TORQUED HI-LOKS PER SRM 51-30-1 PAGE 11 TO 13.

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