# SDR UPS804732

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 4, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N818UP
- Make and model: Doug DC-8-73F
- Registry model: [Doug DC-8-73F](https://openairdocs.org/model/douglas-dc-8-73f) (OpenAirDocs)
- Aircraft serial: 46108
- System (JASC): [5541 · Rudder, Spar/Rib](https://openairdocs.org/jasc/5541)
- Part: Rib
- Condition: Cracked
- Location: Rudder
- 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/UPS804732

## Discrepancy

WHILE IN DALFORT FOR C-CHECK, MAINTENANCE FOUND BOTH HOLES IN UPPER RUDDER, UPPER THRUST LINK SUPPORT RIB CRACKED WHERE THE BOLTS GO THROUGH THE SPLICE BEAM.  MAINTENANCE REMOVED AND REPLACED THE RIB ASSY IAW SRM 51-30-2 AND MM 27-20-21, 27-20-101, AND 27-20-141.

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