COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Brantly B-2 Series Helicopters
AD/B-2/30
Amdt 3
Retirement Life - Critical Components 2/73
Applicability: All model B-2.
Requirement: The following components shall be retired from service at or before the times shown below.
Main Rotor System | Part Number | Max. Operating Hours time in service |
Outboard Main Rotor Blades (except spar assy. P/N 248-45) | 248-40 | 500 |
Outboard Main Rotor Blades (except spar assy P/N 248-45) | 248-46 | 500 |
Outboard Main Rotor Blade | 248-53 | 2500 |
Outboard Main Rotor Blade | 248-100 | 2500 |
Outboard Main Rotor Blade | 248-101 | 2500 |
Lag Hinge Block | 4-1 | 2500 |
Lag Hinge Block | 4-12 | 2500 |
Hub and Pylon Assy (when used with outboard blades P/N 248-40) | 333 | 2500 |
Control Tube Assy - Main Rotor (when used with outboard blades P/N 248-40) | 305-2 | 1310 |
Control Tube Assy - Main Rotor (when used with outboard blades P/N 248-46, 248-53, 248-100 and 248-101) | 305-2 | 2500 |
Inboard Yoke | 280-4 | 2500 |
Hub and Inboard Blade Assy. | 305-1 | 2500 |
Pylon Outboard Bearing Shaft (Part of Hub and Inboard Blade Assy.) | 280-5 or 280-6 | 500 |
Main Rotor Hub Clevis Bearings: | Part Number | Max. Operating Hours time in service |
Outer Race | SJ7275SS | 600* |
COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Inner Race IR7275, M1-
19 or 34466
600*
* Bearings must be rotated as specified in Section III of Maintenance Manual after 300 hours time in service.
| Drive System | Part Number | Max. Operating Hours time in service |
Transmission Assy. | 324 | 2500 | |
Free Wheeling Clutch Assy. | 10-11 | 2500 | |
Free Wheeling Clutch Cage | 10-2 | 300 | |
Overrunning Clutch (Formsprag) | CL-40237 | 2500 | |
Drive Shaft Extension Assy. | 108-33 | 2500 | |
Intermediate Gear Box Assy. | 278-100 | 2500 | |
Tail Rotor Gearbox Assy. | 278-200 | 2500 | |
Effective: | Forthwith. |
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