# Incident 20030526010129I: Gulstm 112, Elbow, MN, May 26, 2003

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: May 26, 2003, 17:33 local time
- Place: Elbow, MN
- Airport: Elbow Lake Municipal Airport
- Phase of flight: Normal Cruise
- Operating rules: General operating rules (Part 91)
- Aircraft: N735M, registered now (https://openairdocs.org/aircraft/N735M) (OpenAirDocs)
- Registry model: Aero Commander 112 (registry code 0144701, https://openairdocs.org/model/aero-commander-112) (OpenAirDocs)
- Registry engine: Lycoming I0360 series (registry code 41515, https://openairdocs.org/engine/lycoming-i0360-series) (OpenAirDocs)
- Reported make and model: GULSTM 112
- Reported engine: LYC IO360C1D6
- Pilot flight hours: 125 total, 25 in this make and model, 25 in the last 90 days
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20030526010129I

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

(-23) AIRCRAFT LOST OIL PRESSURE ON APPROACH INTO Y63. CONNECTING ROD #4 SEPARATED AT CAP. 1 VISIBLE CONNECTING ROD BOLT WAS MISSING. CRANK CASE WAS PUNCTURED AND BROKEN. (-23 AMENDMENT) AIRCRAFT LOST OIL PRESSURE ON APPROACH INTO Y63. RESULTS OF ENGINE TEARDOWN: CONNECTING ROD #4 FAILED. THE CRANKSHAFT #4 JOURNAL WAS BLACK INDICATING THE JOURNAL WAS EXTREMELY HOT. THE ENGINE HAD EXCESSIVE SLUDGE IN THE CRANKSHAFT SLUDGE TUBE. THE MAIN BEARING OF THE #4 CYLINDER WAS DISINTEGRATED. AIRCRAFT LOGBOOKS WERE REVIEWED. OIL CHANGES WERE CONDUCTED PER THE OPERATING MANUAL. LINCOLN FSDO SUPPORTED INVESTIGATION DURING ENGINE TEARDOWN AND PROVIDING REPORTS TO MSP FSDO.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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