# SDR BIER05053

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 18, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N3521S
- Make and model: Piper PA-31-350
- Registry model: [Piper PA-31-350](https://openairdocs.org/model/piper-pa-31-350) (OpenAirDocs)
- Aircraft serial: 317952107
- System (JASC): [5511 · Horizontal Stabilizer, Spar/Rib](https://openairdocs.org/jasc/5511)
- Part: Spar
- Part number: 4007514
- Condition: Cracked
- Location: Lt Horiz Stab
- 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/BIER05053

## Discrepancy

DURING INSP IAW PIPER SB998A, FOUND LEFT STAB SPAR CRACKED ON O/B BOTTOM AREA OF SPAR.  CRACK ONLY VISIBLE USING BORESCOPE DUE TO LOCATION.

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