# Accident 19980614015579A: Cessna 172R, Independence, OR, June 14, 1998

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: June 14, 1998, 10:30 local time
- Place: Independence, OR
- Airport: Independence State Airport
- Damage: Substantial damage
- Phase of flight: Forced/Precautionary Landing
- Operating rules: General operating rules (Part 91)
- Operator: GLRA
- Location: 44.8296° N, 123.1991° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=44.8296&lon=-123.1991&mi=10
- Aircraft: N9514P (not matched to a registry record)
- Reported make and model: CESSNA 172R
- Reported engine: LYC IO360L2A
- People aboard: 2
- Fatal injuries: 0
- Pilot flight hours: 184 total, 62 in this make and model, 12 in the last 90 days
- NTSB investigation: [NTSB SEA98LA096](https://openairdocs.org/ntsb/SEA98LA096) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19980614015579A

## Narrative

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

ENGINE BEGAN TO RUN ROUGH AND SMOKE, OIL SPRAY FROM ENGINE COMPARTMENT. POWER LOSS AND FORCED LANDING RESULTED. (.4)THE PILOT REPORTED THAT DURING THE CLIMB-OUT FOLLOWING A TOUCH-AND-GO LANDING, THE ENGINE BEGAN TO RUN ROUGH, FOLLOWED BY SMOKE/OIL SPRAY ISSUING FROM THE ENGINE COMPARTMENT. SHORTLY THEREAFTER, HE HEARD A LOUD BANG AND EXECUTED A FORCED LANDING IN DEEP GRASS AND VEGETATION.  DURING THE LANDING ROLL, THE AIRPLANE NOSED DOWN, AND THE LEFT WING WAS DAMAGED.  FAA ON SITE EXAMINATION REVEALED OIL POOLED BENEATH THE ENGINE AND OIL SPRAY WITHIN THE ENGINE COMPARTMENT.  THE EXAMINATION ALSO REVEALED A CRACK IN THE STEEL BARREL OF THE #4 CYLINDER. THE #4 CYLINDER WAS REMOVED FOR ANALYSIS. OPTICAL EXAMINATION OF THE APPARENT FRACTURE SURFACES ON CYLINDER #4 UNCOVERED FRACTURE MARKINGS, ARREST LINES AND DEFORMATION PATTERNS CONSISTENT WITH FATIGUE PROGRESSION OVER THE ENTIRE SURFACE OF THE ORIGINAL CRACK. THE CAUSE OF THE METAL SMEARING AND HAIRLINE CRACKS MOST LIKELY WAS INDUCED DURING THE TURNING OPERATION WHEN CUTTING TOOLS HAD BECOME WORN.  IT WAS CONCLUDED THAT THE SURFACE FEATURES WERE OF A NATURE NON-DETECTABLE BY EXISTING NON-DESTRU                                      CTIVE TESTING PROCESSES. (-23)PILOT DEPARTED RUNWAY 34 AT INDEPENDENCE, OREGON AND EXPERIENCED A PUFF OF SMOKE AND A LOUD BANG AFTER WHICH THE AIRCRAFT LOST POWER.  THE PILOT MADE AN EMERGENCY LANDING IN A FIELD ADJACENT TO THE RUNWAY.  NO INJURIES, BUT THE AIRCRAFT RECEIVED SUBSTANTIAL DAMAGE IN THE LANDING.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB SEA98LA096](https://openairdocs.org/ntsb/SEA98LA096), Jun 14, 1998: Cessna 172R (N9514P), Independence, OR, substantial damage. Probable cause: A loss of power due to fatigue failure and cracking of an engine cylinder barrel.

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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