62-25-01 BOEING: Amdt. 509 Part 507 Federal Register November 21, 1962. Applies to Models 707 and 720 Series Aircraft. \n\n\tCompliance with certain service bulletins pertaining to the Model 707 and Model 720 flight control systems is considered necessary to provide for significant improvement in the safety and reliability of operation of those aircraft models. Accordingly, the aircraft models listed below shall be inspected and/or modified within the compliance times and in accordance either with the service bulletins as indicated or with equivalent methods approved by the Chief, Engineering and Manufacturing Branch, FAA Western Region. Airplanes modified in accordance with later FAA approved revisions of the service bulletins listed below will be considered to have complied with the appropriate provisions of this AD. \n\n\t(a) Compliance required within the next 400 hours' time in service following the effective date of this AD: \n\n\nModification\nModel\nService Bulletin No.1. Stabilizer trim actuator auxiliary brake retaining nut. \n707 & 720\n984 \n\n\t(b) Compliance required within the next 650 hours' time in service following the effective date of this AD: \n\n\nModification\nModel\nService Bulletin No.\n1. Rudder pedal push-rod attachment. \n707\n337 \n2. Inboard aileron tab nose weight attachment screws. \n707\n860 \n3. Spoiler and emergency flap switch placard installation. \n707 & 720\n*1524 \n\n\t*BAC P/N 10-60424-621 (Type I) and P/N 10-60424-184 (Type I) are approved equivalents. \n\n\t(c) Compliance required within the next 2,700 hours' time in service following the effective date of this AD: \n\n\nModification\nModel\nService Bulletin No.\n1. Bearing retainer installation for center and inboard hinges for inboard aileron tab.\n707\n307 (R-1) and 307 (R-1)A.\n2. Guard installation for chain in stabilizer trim unit.\n707\n655 and 655B\n3. Flap drive torque tube guard installation in wheel well area.\n707\n680 and 680A\n4. Rudder controlinput stop modification and directional bushing replacement.\n707\n735 (R-1)\n5. Replacement of stabilizer trim actuator.\n707 & 720\n889\n6. Flap takeoff warning switch relocation.\n707 & 720\n1016 (R-1) and 1016 (R-1)C\n7. Stabilizer trim actuator motor replacement.\n707\n1247\n8. Emergency flap switch installation.\n707 & 720\n1251\n9. Rudder power con- trol unit replacement, "Extension Sleeve Revision".\n707 & 720\n1479 (R-1) Part I only\n10. Rudder pressure control valve bypass installation.\n707 & 720\n1482 (R-1).\n11. Rudder control centering spring cable modification.\n707 & 720\n1625\n12. Rudder control centering spring cable guard installation.\n707 & 720\n1680 & 1680A\n \n\n\t(d) Compliance required within the next 3,500 hours time in service following the effective date of the AD. \n\n\nModification\nModel\nService Bulletin No. \n1. Inboard aileron centering spring cartridge. \n707 & 720\n1344 \n2. Control wheel stabilizer trim switch installation. \n707 & 720\n1410** and 1410B\n3. Replacement of rudder hydraulic system solenoid valve. \n707 & 720\n1490 (R-1) \n\n\t**BAC P/N's 10-3265-6 and 10-60705-1 are approved equivalents. \n\n\t(e) Compliance required within the next 5,000 hours' time in service following the effective date of this AD: \n\n\nModification\nModel\nService Bulletin No. \n1. Stabilizer trim actuator brake unlock gear ball bearing adapter addition. \n707 & 720\n1128 & 1128A \n2. Stabilizer trim actuator brake pawl spring. \n707 & 720\n1237\n3. Outboard spoiler shutoff valve consolidation.\n707 & 720\n1336 (R-1) and 1336 (R-1)B. \n4. Replacement of spoiler hydraulic system shutoff valve. \n707 & 720\n1484\n\n\tThis directive effective December 20, 1962. \n\n\tRevised December 24, 1963.