# SDR 98ZZZX3411

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 1, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N95388
- Make and model: Piper PA-28-140
- Registry model: [Piper PA-28-140](https://openairdocs.org/model/piper-pa-28-140) (OpenAirDocs)
- Aircraft serial: 2825910
- System (JASC): [5711 · Wing Spar](https://openairdocs.org/jasc/5711)
- Part: Spar
- Condition: Corroded
- Location: Lt Wing
- 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/98ZZZX3411

## Discrepancy

FOUND EXFOLIATION BLISTER ON LT WING SPAR ON LOWER REAR FLANGE OF I-BEAM SPAR; ABOUT 6 INCHES TO 8 INCHES OUTBOARD OF FUSELAGE OR JUST INBOARD OF WS 37.2.  CORROSION WAS ABOUT 8 INCHES LONG AND COVERED WIDTH OF FLANGE.  THE CRACKED APPEARANCE WAS ACTUALLY LAYERS OF CORRROSION IN THE METAL.  SB 789A HAS BEEN C/W TO PROVIDE INSPECTION PLATE AFT OF SPAR.  DAMAGE COULD NOT BE SEEN OTHERWISE.  RECOMMEND SB 789A BECOME AD TO INSTALL INSPECTION PLATES.

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