I appreciate the input. $500,000 is the budget. My problem with the R44 is that the operating expenses get astronomical if it is just a toy. I will fly no more than 100 hrs/yr. I have heard that they are comfortable.
You're right about the R44. If you own it for a full 12 year cycle, you need to fly it a couple hundred hours per year to keep the hourly cost from skyrocketing.
Cherminator I am discovering exactly what you state. I keep coming back to the Enstrom. The only calendar limited parts are that TT straps (identical to the one on the 206). A transmission exchange is $21,000, t/r gearbox $7000. Blades are lesss than $50,000 for 3 (and on condition) vs $125,000 for the 206. The list goes on.
If you’re intent is only private use, non-compensation or hire, under Part 91, you can fly the R44 past 12 years. We cover this topic back in 2011. The only calendar limited parts, under § 91, are the main and tail rotor blades.
To continue operation after the 12yr. mark you must compile with The Instructions for Continued Airworthiness section in the R44, maintenance manual, titled Airworthiness Limitations, which is segregated and clearly distinguishable from the rest of the document.
The must do items are covered in that section of the manuals. Moreover, it depends on who said, “you must”. Did Lycoming say you must? Did Robinson Helicopters say you must? Or did the FAA say you must. The FAA’s “Must” is the one that counts.
The R44 maintenance manual Airworthiness Limitations are in Section 3 on page 3.9. Page 3.9 is FAA approved and sets forth each mandatory (must do) replacement times, structural inspection intervals, and related structural inspections. Things like calendar engine overhaul periods were not included in those airworthiness limitations under § 91. However, engine ADs still apply.
As long as the owner complies with section 3 (page 3.9) in the R44 maintenance manual, the aircraft and engine can be maintained under FAR 91.409a, 43.15c, and Appendix D to Part 43 in an airworthy condition.
To fully understand you may need to read the following posts and the supporting documentation.
R22 Airworthiness past 12 years. (Posted 15 October 2011)
MacMillan- (2011) Legal Interpretation(PDF)
R44 Airworthiness Limitations Life-Limited Components
FAA Order 8620.2A - Applicability and Enforcement of Manufacturer’s Data
Specific Part 91 operations for compensation or hire are governed by the inspection requirements found in § 91.409[b], which do not require you to comply with the manufacturer's recommended maintenances.
Part 135 operations for compensation or hire are governed by the inspection requirements found in §135.421, which requires you comply with the manufacturer's recommended maintenance.
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Lycoming Engine Hour & Calendar Period TBO
Edited by iChris, 28 December 2018 - 19:12.