MAY 2015 Chapter 5 Inspections Page 5.39
5-50 2000-Hour Maintenance and Inspection
NOTE
Fuel bladder is on condition.
1. Order one R8480 2000-Hour Maintenance and Inspection Kit from any R66 Dealer or
Service Center.
2. Refer to helicopter maintenance records and § 4-10. Replace life-limited parts as
required.
3. Refer to helicopter maintenance records and § 4-20. Replace parts with a recommended
TBO and parts with a recommended replacement time as required. Replace engine and
accessories scheduled for maintenance as required.
4. Visually inspect vertical stabilizers. Verify no cracks, corrosion, loose rivets, dents, or
deformation.
5. Remove fuel bladder per § 28-10. Visually inspect. Verify no corrosion, residue,
microbial growth, or damage to fabric. Visually inspect adjacent structure for evidence
of bladder leakage. Replace roll-over vent valve o-rings and packings per § 28-11.
Remove any foreign object debris. Install bladder per § 28-10.
6. Perform (engine driveline) forward flex plate shimming per § 63-11 and (tail rotor
driveline) intermediate flex plate shimming per § 65-30.
7. Fill and bleed hydraulic system per § 12-34 as required.
8. Perform main rotor flight control and blade angle rigging per §§ 18-30 and 18-40.
9. Perform tail rotor flight control and blade rigging per §§ 18-50 and 18-60.
10. If installed, perform leak check of air conditioning system per § 12-83.
11. Perform 100-Hour / Annual Maintenance and Inspection per § 5-45.
12. Weigh helicopter per § 8-20.
13. Balance tail rotor per § 18-20. Track and balance main rotor per § 18-10. Perform flight
checks per § 5-43.
14. Drain and flush tail rotor gearbox per § 12-23.
15. Make appropriate maintenance record entries. Enter maintenance performed (such as
part replacement, equipment adjustments, weighing, servicing, and lubrication) and
inspection data. Data must include a description of (or reference to data acceptable to
the Administrator) the work performed, date, helicopter total time in service, signature,
certificate type and certificate number of person approving aircraft return to service.
5-55 12-Year Maintenance and Inspection
[Reserved]