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A C320 pilot owner reports a hole chafed in the engine cowling from an engine exhaust clamp. Hole approximately half-dollar size and occurred after engine change.
| Attributes | |
| ACN | 697248 |
| Time | |
| Date | 200605 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : lgb.airport |
| State Reference | CA |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | general aviation : personal |
| Make Model Name | Skynight 320 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | ground : preflight |
| Flight Plan | None |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Qualification | pilot : commercial |
| Experience | flight time last 90 days : 56 flight time total : 2160 flight time type : 138 |
| ASRS Report | 697248 |
| Person 2 | |
| Affiliation | other |
| Function | maintenance : inspector |
| Events | |
| Anomaly | aircraft equipment problem : less severe maintenance problem : non compliance with mel |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | performance deficiency : scheduled maintenance performance deficiency : installation performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Environmental Factor Aircraft Maintenance Human Performance |
| Primary Problem | Environmental Factor |
Narrative:
Exhaust clamps chafe through engine nacelle after major engine work (removed/reinstalled). During preflight; a chafed hole located at the exhaust clamp was noticed. The specific location was the left engine at the left exhaust clamp. The hole was approximately the size of a 1/2 dollar. The exhaust clamps were tight -- no cracks were visible. These chafed areas corresponding to exhaust clamps at the opposite side of the left engine and on both sides of the right engine all had patches. None of the patches appeared to be significant from a structural perspective. The ia/ap who finished the engine work said there are no adjustments and this chafing is normal -- no cause for concern. The nacelle is not a structural member of the aircraft.
Original NASA ASRS Text
Title: A C320 PLT OWNER RPTS A HOLE CHAFED IN THE ENG COWLING FROM AN ENG EXHAUST CLAMP. HOLE APPROX HALF-DOLLAR SIZE AND OCCURRED AFTER ENG CHANGE.
Narrative: EXHAUST CLAMPS CHAFE THROUGH ENG NACELLE AFTER MAJOR ENG WORK (REMOVED/REINSTALLED). DURING PREFLT; A CHAFED HOLE LOCATED AT THE EXHAUST CLAMP WAS NOTICED. THE SPECIFIC LOCATION WAS THE L ENG AT THE L EXHAUST CLAMP. THE HOLE WAS APPROX THE SIZE OF A 1/2 DOLLAR. THE EXHAUST CLAMPS WERE TIGHT -- NO CRACKS WERE VISIBLE. THESE CHAFED AREAS CORRESPONDING TO EXHAUST CLAMPS AT THE OPPOSITE SIDE OF THE L ENG AND ON BOTH SIDES OF THE R ENG ALL HAD PATCHES. NONE OF THE PATCHES APPEARED TO BE SIGNIFICANT FROM A STRUCTURAL PERSPECTIVE. THE IA/AP WHO FINISHED THE ENG WORK SAID THERE ARE NO ADJUSTMENTS AND THIS CHAFING IS NORMAL -- NO CAUSE FOR CONCERN. THE NACELLE IS NOT A STRUCTURAL MEMBER OF THE ACFT.
Data retrieved from NASA's ASRS site as of January 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.