# SDR 2000UALA00280

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 18, 2000
- Submitted: October 4, 2000
- Operation: Air carrier
- Aircraft: N608UA
- Make and model: Boeing 767222
- Aircraft serial: 21869
- Aircraft time: 66,729 hours, 17,169 cycles
- Engine: Pwa JT9D7R4D
- System (JASC): [5740 · Wing, Attach Fittings](https://openairdocs.org/jasc/5740)
- Part: Bolt
- Condition: Cracked
- Location: Lt Wing
- Part time: 66,729 hours, 17,169 cycles
- 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/2000UALA00280

## Discrepancy

NR 1 PYLON O/B SIDE LOAD FITTING I/B BOLT HAD CRACK INDICATION.  *S/D*  BOLT MATERIAL IS H11 STEEL AND CRACK IS THE RESULT OF STRESS CORROSION, A CHARACTERISTIC OF H11 MATERIAL.  INCONEL 718 BOLTS WERE INSTALLED PER PROCEDURES OUTLINED IN BOEING SERVICE BULLETIN 767-57A0074, PART 3.  FASTENER REPLACEMENT.

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