# SDR 98ZZZX1135

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 15, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N77412](https://openairdocs.org/aircraft/N77412), registered now
- Make and model: Cessna 120
- Registry model: [Cessna 120](https://openairdocs.org/model/cessna-120) (OpenAirDocs)
- Aircraft serial: 11853
- System (JASC): [5711 · Wing Spar](https://openairdocs.org/jasc/5711)
- Part: Spar Block
- Part number: 0411131
- Condition: Corroded
- Location: Front Spar
- Part time: 4,626 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/98ZZZX1135

## Discrepancy

BLOCK 5 ( 4, NR 0411129) REMOVED.  CHECKED INSIDE OF FRONT AND REAR SPARS.  SLIGHT CORROSION FOUND.  CLEANED AND PAINTED WITH ZINC CHROMATE.  MOST BOLTS FROZEN INTO BLOCKS.  BOLTS HAD TO BE POUNDED OR DRILLED OUT.  RECOMMEND THAT BLOCKS BE REMOVED IF WINGS ARE TAKEN OFF FOR ANY REASON TO CHECK INSIDE OF SPARS.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.