# SDR 2005FA0000451

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 28, 2005
- Submitted: March 28, 2005
- Operation: General aviation
- Aircraft: N931ER
- Make and model: Piper PA-44-180
- Registry model: [Piper PA-44-180](https://openairdocs.org/model/piper-pa-44-180) (OpenAirDocs)
- Aircraft serial: 4496155
- Aircraft time: 2,186 hours
- System (JASC): [5712 · Wing, Rib/Bulkhead](https://openairdocs.org/jasc/5712)
- Part: Rib
- Part number: 78475007
- Condition: Cracked
- Location: Rt Wing
- Part time: 2,186 hours
- Stage of operation: UK
- 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/2005FA0000451

## Discrepancy

SINCE FLEET OF SIX PIPER ARROWS WERE ALL FOUND TO HAVE CRACKED RIBS IN THE SAME LOCATION, FOUND DURING ROUTINE INSPECTION.  SDRS WERE SENT.  DETERMINED TO INSPECT FLEET OF TEN SEMINOLES.  THE BASIC WING STRUCTURE IS DESIGNED THE SAME.  FOUND SIMILAR CRACKS IN SEVEN OF THE SEMINOLES.  THE CRACKS ARE FOUND IN THE RIB, ADJACENT TO THE FORWARD TRUNNION PLATE (WHICH MUST BE REMOVED TO PROPERLY SEE THE CRACK).  IN THIS PARTICULAR AIRCRAFT THE RIB, P/N 78475-007, LOCATED AT AFT STATION 49.25 ON THE RIGHT SIDE, WAS CRACKED.  THE LEFT RIB, CRACKED IN OTHER SEMINOLES IS P/N 78475-006 AND LOCATED AT AFT STATION 49.25.

---
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.