R22 Scheduled Maintenance

First 25 hours:

• Change oil and filter and inspect oil suction screen and filter per Lycoming  SB480.
• Check alternator belt tension per Lycoming system.
• Verify sheave alignment.
• Service  Instruction SL 1129.
• Verify track and balance of drive

Every 50 hours:

• Change oil and filter and inspect oil suction screen and filter per Lycoming SB480E.
• Inspect and service engine per Lycoming Operator’s Manual and SI 1080.

First 100 hours:

• Drain and flush gearboxes per Sections 1.120 1.130.
• Check engine exhaust valve guide clearance per Lycoming SB388C.

Every 100 hours:

• Inspect per Section 2.400.
• Inspect and service engine per Lycoming Operator’s Manual
• Inspect and service TCM ignition components per TCM SB643

Every 300 hours:

• Lubricate A181-4 Rev K, Rev L, and Rev M bearings per Section 2.502.
• Lubricate A184 bearing per Section 2.503.
• Inspect valves and check engine exhaust valve guide clearance per Lycoming SB301, SB388, and Operator’s Manual.

Every 500 hours:

• Drain and flush gearboxes per Sections 1.120 1.130.
• Inspect spindles per FAA AD 88-26-01 R2.

Every 800 hours:

• Lubricate A181-4 Rev N bearing per Section 2.502.

Every 2200 hours:

• Overhaul helicopter per Section 2.700.
• See R22 2200 Hour Inspection

Calendar

Every 4 months:

• Change oil and filter and inspect oil suction screen and filter per Lycoming SB480E.

Every 12 months:

• Inspect per Section 2.400. Lubricate A181-4 Rev K, Rev L, and Rev M bearings per Section 2.502.
• Lubricate A184 bearing per Section 2.503.
• Inspect emergency locator transmitter (ELT) per FAR 91.207.
• Clean gearbox chip detectors per Section 1.115.

Every 24 months:

• Test and inspect transponder per FAR 91.413.
• Every 4 years: Lubricate A181-4 Rev N bearing per Section 2.502.
• Overhaul TCM  magnetos per TCM SB643B.

Every 12 years:

• Perform 12-year inspection and limited overhaul per Section 2.600, or overhaul per Section 2.700.
• See R22 12 Year Inspection