My apologies for duff gen.
The "Typical" hours of 15,000 came from the C177 letter. The C210 letter quotes
- For airplanes flown in TYPICAL Usage as defined in Section 2A-10-00:
- Airplanes that have more than 4,000 flight hours must accomplish this document within 10 flight hours.
- Airplanes that have less than 4,000 flight hours must accomplish this document within 10 flight hours upon reaching 4,000 flight hours.
- It is acceptable to accomplish this service document before 4,000 flight hours to align with a scheduled maintenance event or inspection.
So That brings a lot more C210s into the crosshairs, as Bend alot suggests.