5-20 Scheduled Maintenance and Inspections
The R66 helicopter required inspection intervals are given in Table 5-1. Required inspection
intervals are maximum 100 hours time in service or 12 calendar months, whichever occurs
first; the inspection interval may be extended up to 10 hours, without accumulation, if
allowed by local regulations.
Some aircraft will reach calendar intervals before accumulating the associated service time.
Unless noted, use the more conservative inspection interval. Refer to § 5-45 for inspection
procedures.
Some aircraft may require maintenance and inspections in addition to the requirements in
Table 5-1. Consult aircraft maintenance records, Service Bulletins (SB), aviation regulations,
Airworthiness Limitations, and Airworthiness Directives (AD) for applicability.
Preventive maintenance is required between scheduled inspections. Fluid leaks, discoloration,
fretting, galling, chafing, nicks, scratches, dents, cracks, and corrosion all warrant further
investigation. Unairworthy items must be replaced or repaired as allowed by RHC.
MAY 2015 Chapter 5 Inspections Page 5.3
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