AD/MCH/2 - Critical Components - Retirement Life
COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
View image in the official source
Aero Resources J2 Series Gyroplanes
AD/MCH/2 Critical Components - Retirement Life 8/73
Applicability: All model J2.
Requirement: The following components shall be retired from service at or before the times shown below:
Retirement Hours
| Component | Part Number | Max. Wt. 1500 lb. | Max. Wt 1600 lb. |
|---|---|---|---|
| Blade Assy Main Rotor | 1500 | 1220 | 978* |
| Tail Boom Assy RH | 2100 | 11750 | 11750 |
| Tail Boom Assy LH | 2125 | 11750 | 11750 |
| Trunnion Horizontal Stabilizer | 2604 | 75800 | 75800 |
| Controlex Assy Rudder | 2717 | 300 | 300 |
| Cable Assy Cyclic Control - Roll | 2712 | 21000 | 1000 |
| Cable Assy Cyclic Control - Pitch | 27401 | 1000 | 1000 |
| Bellcrank - Collective Control | 2765 | 20600 | 20600 |
| Control Rod Assembly - Collective | 2777 | 37400 | 37400 |
| Front Spar Assy - Wing | 2801 | 39300 | 15347* |
| Shaft Assy - Pitch Bearing | 6505 | 5110 | 2250* |
| Thrust Bearing | MRC210-SZZ-T12 | 300 | 300 |
| Tube Assy ‘A’ Frame ‘U’ Frame Assy LH | 2381 | 1670 | 1670 |
| Tube Assy ‘A’ Frame ‘U’ Frame Assy RH | 2382 | 1670 | 1670 |
| Stub Shaft | 6638 | 1438 | 1438 |
When the maximum weight is increased from 1500 lb. to 1600 lb. the service life limit may be prorated in the following manner:
D = A+C - C B
COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
where ‘A’ is the actual hours on the component prior to modification. ‘B’ is the service life limit for the component at 1500 lb. GW.
‘C’ is the service life limit for the component at 1600 lb. GW.
‘D’ is the revised total prorated service life limit for the component (including the time prior to modification).
Effective: 28 September 1973.