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A swearingen merlin iva with TPE331-10UA engines had 1 engine out of compliance due to the second stage turbine rotor exceeded life cycles by 287 cycles.
| Attributes | |
| ACN | 421102 |
| Time | |
| Date | 199811 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : zzz airport : zzz |
| State Reference | FO |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | tracon : ont |
| Operator | common carrier : air carrier |
| Make Model Name | Merlin IV A |
| Flight Phase | other |
| Flight Plan | None |
| Person 1 | |
| Affiliation | Other |
| Function | other personnel |
| Qualification | other other : other |
| ASRS Report | 421102 |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : far non adherence : published procedure |
| Independent Detector | other other : unspecified |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
In preparing aircraft records for an off-lease inspection, determined the second stage rotor was overcycled by 287 cycles. Life limit is 4800 cycles and now it appears there are 5087 cycles. There are many discrepancies in the record keeping while the aircraft was in france, therefore, the actual cycle count is not very clear. I believe there needs to be a better way to keep track of these items, especially when the aircraft goes from country to country. Computerized programs seem to be the best way to follow this. Aircraft was not flown after this discovery. A rental engine was installed to ferry the aircraft to the united states.
Original NASA ASRS Text
Title: A SWEARINGEN MERLIN IVA WITH TPE331-10UA ENGS HAD 1 ENG OUT OF COMPLIANCE DUE TO THE SECOND STAGE TURBINE ROTOR EXCEEDED LIFE CYCLES BY 287 CYCLES.
Narrative: IN PREPARING ACFT RECORDS FOR AN OFF-LEASE INSPECTION, DETERMINED THE SECOND STAGE ROTOR WAS OVERCYCLED BY 287 CYCLES. LIFE LIMIT IS 4800 CYCLES AND NOW IT APPEARS THERE ARE 5087 CYCLES. THERE ARE MANY DISCREPANCIES IN THE RECORD KEEPING WHILE THE ACFT WAS IN FRANCE, THEREFORE, THE ACTUAL CYCLE COUNT IS NOT VERY CLR. I BELIEVE THERE NEEDS TO BE A BETTER WAY TO KEEP TRACK OF THESE ITEMS, ESPECIALLY WHEN THE ACFT GOES FROM COUNTRY TO COUNTRY. COMPUTERIZED PROGRAMS SEEM TO BE THE BEST WAY TO FOLLOW THIS. ACFT WAS NOT FLOWN AFTER THIS DISCOVERY. A RENTAL ENG WAS INSTALLED TO FERRY THE ACFT TO THE UNITED STATES.
Data retrieved from NASA's ASRS site as of July 2007 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.