BOEING 707/720 Overhaul Inspection & Period Check Period The Following Systems are Structural and Systems Items that are not removed from the Aircraft. Sample items are identified by a Suffix "S" and will be accomplished on 1/4 of the Fleet Doors, Chapter 52 Electronic, forward Cargo, Rear Cargo, L. Entry Door, Rt. Forward Service Door, Rt. Entry Door, Interior, Frames, Scuff Plates Emergency Exits, Cutouts, Interior and Exterior 4,000 S Fuselage, Chapter 53 Framing and Skin around Windshields and Windows Zone 21-22-26 5,000 S Framing and Skin around Galley, Cargo Entrance Doors, Emergency Exits, Hatches, Electronic Access Doors, Battery Access Doors.
Zone 11-12-13-15-25-26-27 Above Floor 4,000 S Below Floor 4,000 S Galley, Cargo and Entrance Doors Emergency Exit Hatches, and Lower Nose Compartment Access Doors Zone 11-12-25-26-42-43-44-45-46- 47-48 4,000 S Fuselage Skin Panels and Circumferential and Longitudinal Skin Joints - Zone 14-15-16-21-22-23- 24-25-26-27-28-29-32-33-37 4,000 S Fuselage Skin Panels under Horizontal Stabilizer Fairing Zone 37 10,000 Tension Bolts between Body Section at Stations 360 to 960 Zone 16- 24-26-29 and Station 1440 Zone 37 4,000 S Pressure Bulkheads and Pressure Panels at the Following Locations:
BS 178 Zone 41 7,000 Nose Wheel Well Zone 31 3,000 BS 620 Zone 33-34 4,000 S
BS 960 Zone 35-36 4,000 S BS 1440 Zone 37 4,000 S Horizontal Pressure Web Between BS 820 and 960 - Zone 35-36 4,000 S Wing and Empennage Attachment Bulkhead at Following Body Stations:
BS 620-820 - Zone 14-26-35-36 7,000 BS 1440 Zone 29 4,000 S BS 1505.87 Zone 37 5,000 BS 1592 Zone 38 8,000 Effective date July 1, 1964 Page 9 of 12 Pages
OPERATIONS SPECIFICATIONS
AIRCRAFT MAINTENANCE BOEING 707/720 Overhaul Inspection & Period Check Period Body Frames at BS 740-758.95,
781.95, and 800 - Zone 26 5,000 Floor Beams at BS 360, 830, 920, and 1,260 Zone 11-12-14-15-26 4,000 S Fuselage Delta Beam BS 620-820 and Keel Beam BS 820-960 Zone 32 5,000 Main Gear Side Brace Support Fittings Zone 35-36 4,000 Nose Landing Gear Supporting Structure Zone 31 3,500 Skin and Stringer Splices in Crown Area (510 and above) at BS 360- 481-620-820-960-1241 and 1440 Zones 24-25-26-29 4,000 S Intermediate Stringer Splices in Crown Area's S-10 and above BS 600-620-820-960-1440 Zone 26 4,000 S Fuselage Skin in Lower Lobe under Galley and Lavatory Areas - Zone 11-12-13-15-16 4,000 S Nacelles, Chapter 54 Forward Engine Mount Fittings 1,400 Forward Engine Mount Thrust Link 1,400 Thrust Link Terminal Bolts 4,000 S Forward Engine Mount Thrust Connection Fitting 1,400 Rear Engine Mount Fitting 1,400
Rear Engine Support Brackets 1,400 Nacelle Strut Front Spar Fittings 1,400 Nacelle Strut Midspar Fittings 4,000 S Nacelle Strut Lower Spar Fittings 4,000 S Nacelle Strut Diagonal Brace 4,000 S Nacelle Front Spar Bolts 5,000 Diagonal Strut Bolts 10,000 Bolts - Mid Spar 10,000 Wing Upper Surface Strut Support 5,000 Nacelle Strut Internal Structure 8,000 Forward and AFT Drag Support Fittings 8,000 Stabilizers, Chapter 55 Horizontal Stabilizer Upper and Lower Spar Terminal Fittings and Ends of Spars Zone 37 5,000 Horizontal Stabilizer Upper Rear Spar Terminal Fishmouth Splices Zone 91-92-37 5,000 Horizontal Stabilizer Attach Pins Zone 37 10,000 Horizontal Stabilizer Structure Internal Zone 91-92 5,000 Horizontal Stabilizer Center Section Zone 37 5,000 Effective date July 1, 1964 Page 10 of 12 Pages
OPERATIONS SPECIFICATIONS
AIRCRAFT MAINTENANCE BOEING 707/720 Overhaul Inspection & Period Check Period Horizontal Stabilizer Center Section Hinge Fittings BS 1592 2,500 Horizontal Stabilizer Jackscrew Fittings on Front Spar and on Floor of Body Section 48 BS 1505 Zone 37 3,500 Horizontal Stabilizer Leading Edge Attachment Zone 91-92 3,500 Elevator Internal Structure Zone 93-94 10,000 Elevator Balance Panels, Panel Support Link Assemblies Balance By Access and Top Panels Zone 93-94 3,500 Elevator Adjustable Weights (Bolted
to Balance Panels) Zone 93-94 3,500 Elevator Trim and Control Tabs Zone 93-94 1,200 Elevator Hinge Fittings Zone 93-94 1,200 Fuselage Fin Attach Fittings BS 1440 Zone 95 4,000 S Fuselage Fin Attach Fittings BS 1507 Zone 95 4,000 Vertical Fin Front Spar Terminal Fittings and End of Spars - Zone 95 4,000 S Fin Rear Spar Terminal Fittings and Fishmouth Splices - Zone 95 10,000 Fin Attach Pins - Zone 95 5,000 S Vertical Fin Internal Structure 4,000 S Vertical Fin Leading Edge Attachment Zone 95 3,500 Vertical Fin Splice Station 111.65 3,500 Rudder Hinge Fittings Zone 96 1,200 Rudder Balance Panels, Panel Support Link Assemblies Skin and Covers in Balance Bay Area's Zone 96 3,500 Control and Balance Tabs Zone 96 1,400 Rudder Internal Structure Zone 96 4,000 S Wings, Chapter 57 Upper & Lower Interspar Skin Zone 71-72-73-74-75-79 4,000 Lower Interspar Skin Underwing Body Fairing and Wing Center Section Zone 76-77-78 4,000 Rear Spar Wing Terminal Forging Zone 77 5,000 Wing Production Joint Zone 71-74- 75-79 4,000 S Wing to Body Shear Attachment Wing Upper Surface Zone 76-78 4,000 S Wing Lower Surface at WBL 129.62 Zone 72-74-76-78 4,000 S Beaver Tail Attachment and Holes Zone 72-73-76-78 4,000 S Wing Lower Surface Interspar Area Zone 71-72-73-74-75-76-77-78-79 4,000 S Effective date July 1, 1964 Page 11 of 12 Pages
OPERATIONS SPECIFICATIONS
AIRCRAFT MAINTENANCE BOEING 707/720
Overhaul Inspection & Period Check Period Wings, Chapter 57 (continued) Wing Center Section Lower Surface Stringers Adjacent to Manufacturing Access Holes - Zone 77 12,000 Wing Lower and Upper Surface Splice at WBL 64.38 4,000 S Wing Lower and Upper Surface Stringer Splices at WBL 129.62 Zone 72-73-76-78 4,000 S Wing Lower and Upper Surface Splice at WS 360 Zone 71-72-73-74 4,000 S Wing Lower and Upper Surface Splice at Wing Production Joint Zone 71- 74-75-79 4,000 Stringer Connections at Boost Pump Housing WBL 75 113,145,WS 340 and WS 368 Zone 71-72-73-74-76-78 4,000 S Lower Surface Stringers at WS
643.50 Zone 71-74 4,000 S Front Spar Zone 62-63-64-65-66-67- 14 4,000 S Rear Spar Zone 33-34-35-36-81-82- 83-84-85-86-87-88 4,000 S Zone 84-85 6,000 Zone 33-34 BBL 38.05 10,000 Front and Rear Spars (Internal) Zone 71-72-73-74-75-79 4,000 S Zone 76-77-78 5,500 Wing Ribs and (Center Section) Spanwise Beams Zone 71-72-73-74-75- 76-77-78-79 4,000 S Wing Body Breather Web and BL 12.78 Beams Zone 33-34 5,000 Wing Terminal Forgings (BS 620-820) Zone 64-65-35-36 5,000 Zones 76-77-78 5,000 Wing Body Bottle Pin Retaining Bolts Zone 64-65-35-36 3,500 Wing Body Bottle Pins and Pin Holes Zone 64-65-35-36 10,000 Wing Terminal Forgings Zone 76-78 5,000 Zone 76-78-33-34 7,000 Leading Edge Internal Structure Zone 81-82-83-84-85-86-87-88 4,000 S Main Landing Gear AFT Support Rib External Chord (Beaver Tail) Torque Box Zone 35-36-84-85 3,000 Trunnion Support Fitting Bolts and
Pin (Torque AFT Trunnion Cap Internal Wrenching Bolts on all Aircraft at 1000 +- 100 hours) 10,000 Wing Trailing Edge Skin and Support Structure Zone 81-82-83-84-85-86- 87-88 3,500 Effective date July 1, 1964 Page 12 of 12 Pages
OPERATIONS SPECIFICATIONS
AIRCRAFT MAINTENANCE BOEING 707/720 Overhaul Inspection & Period Check Period Wings, Chapter 57 (continued) Fillet Flap Support Beam Attachment to Uplock Support BS 900 - Zone 35-36 5,000 Walking Beam Supports BS 850 and 860 Zone 35-36 5,000 Spoilers Zone 82-84-85-86 4,000 S Main Wing Flap Zones 82-84-85-87 4,000 Flap Tracks and Track Supports Zone 82-84-85-87 4,000 Fillet Flap Zone 84-85 10,000 Inboard and Outboard Ailerons Zone 81-83-86-88 3,500 Inboard and Outboard Ailerons Balance Panels Zone 81-83-86-88 3,500 Inboard and Outboard Aileron Adjustable Weights (Bolted to Balance Panels) Zone 81-83-86-88 3,500 Wing Glove Zone 64-65 4,000 S Beaver Tail Bolts Zone 82-83 4,000 S Structure under Cover Fillet Splice Plate and Skin Zone 86-88 2,500 Beaver Tail (X-Ray Skin Beneath) Zone 86-88 4,000 S Effective date July 1, 1964 ---------------------------------------------------------------- ---------------------------------------------------------------- FIGURE 22. OPERATIONS SPECIFICATIONS AIRCRAFT MAINTENANCE
- DOUGLAS DC-8/F
Form Approved.
UNITED STATES OF AMERICA Budget Bureau FEDERAL AVIATION AGENCY No. 04-R075.
WASHINGTON
OPERATIONS SPECIFICATIONS PART D Page 1 of 20 Pages
OPERATIONS SPECIFICATIONS
AIRCRAFT MAINTENANCE DOUGLAS DC-8/F Overhaul Inspection & Period Check Period Air Conditioning, Chapter 21 O.C.
Actuator, Cabin Air Heat Exchanger Door 8,000 Actuator, Freon Condenser Selector Valve 12,500 Actuator, Freon Condenser Exhaust Door 7,500 Actuator, Mixing Valve 10,500 Actuator, Recirculating & Ventilating Air Selector 7,000 Amplifier, Mixing Valve Control Unit O.C.
Amplifier, Cabin Air Heat Exchanger Control O.C.
Amplifier, Freon Temperature Control O.C.
Amplifier, Cabin Pressure Control O.C.
Bulb, Freon Condenser Thermistor O.C.
Bulb, Outside Temperature Sensing O.C.
Bulb, Cabin Duct Temperature O.C.
Bulb, Freon Evaporator Differential Temperature O.C.
Blower, Radio Rack Ventilating 5,000 Condenser, Freon O.C.
Controller, Cabin Pressure Rate 8,000 Door Assembly, Freon Condenser Forward and Aft Exhaust O.C.
Drive & Actuator, Cabin Outflow Butterfly & Nozzle 12,500 Exhaust Assembly, Cabin Air Heat Exchanger O.C.
Evaporator, Freon O.C.
Fan, Freon Condenser 7,000 Fan, Cabin Air Recirculating 4,000 Heat Exchanger, Cabin Air O.C.
Horn, Cabin Low Pressure Takeoff Warning O.C.
Heater, Cockpit Floor Panel O.C.
Indicator, Cabin Air Temperature O.C.
Indicator, Freon Superheat & Saturation Temperature O.C.
Indicator, Cabin Rate of Climb 10,500 Indicator, Cabin Altitude & Differential Pressure 10,500 Indicator, Cabin Compressor RPM 10,500 Limiter, Pressure Ratio 10,500 Effective date November 6, 1964 Page 2 of 20 Pages
OPERATIONS SPECIFICATIONS
AIRCRAFT MAINTENANCE DOUGLAS DC-8/F Overhaul Inspection & Period Check Period Air Conditioning, Chapter 21 continued Potentiometer, Manual Temperature Control O.C.
Receiver, Freon O.C.
Switch, Air Manifold Under Pressure Freon Control 14,000 Switch, Cabin Turbo Compressor Oil Overtemperature Comp. OH Switches, Miscellaneous O.C.
Switch, Freon Condenser Pressure Cutout O.C.
Switch, Radio Rack Blower Differential Pressure 14,000 Switch, Freon Compressor Overheat Comp. OH Switch, Cabin Low Pressure 12,500 Transmitter, Turbo Compressor Comp. OH Turbo Compressor, Cabin Air 3,500 Turbo Compressor, Freon 2,500 Thermistor, Freon Evaporator O.C.
Transmitter, Freon Turbine RPM 3,500 Timer, Cabin Low Pressure & Takeoff Warning 14,000 Valve, Assembly, Cabin Turbo Compressor O.C.
Valve, Turbo Compressor Shutoff 10,500 Valve Assembly, Recirculation 12,000
Valve, Thermostat Recirculation 10,500 Valve, Freon Condenser Air Selector O.C.
Valve, Condenser Fan Shutoff 8,000 Valve, Three Port Mixing 10,500 Valve, Cockpit Air Diverter 14,000 Valve, Radio Rack Cooling 14,000 Valve, Recirculating & Ventilating Air Selector 7,000 Valve, Freon Turbine Regulating 2,500 Valve, Freon Expansion O.C.
Valve, Freon Turbine Shutoff 8,000 Valve, Radio Rack Venturi By-Pass 7,000 Valve, Cold Air Pressure Regulator 10,500 Valve, Cabin Pressure Relief 10,500 Valve, Cabin Outflow Butterfly 14,000 Valve, Outflow Nozzle 17,500 Effective date November 6, 1964 Page 3 of 20 Pages
OPERATIONS SPECIFICATIONS
AIRCRAFT MAINTENANCE DOUGLAS DC-8/F Overhaul Inspection & Period Check Period Auto Pilot, Chapter 22 Automatic Cutoff 7,500 Auto Pilot Indicator 10,500 Auto Pilot Controller 5,000 Auto Pilot Release Switch O.C.
Computer, Flight Control 3,000 Computer, Yaw Command 5,000 Computer, Pitch Command 5,000 Computer, Roll Command 5,000 Computer, Pressure 5,000 Gain Calibrator 7,500 Interlock Rack 7,000 Linear Accelerometer O.C.
Pitot System Cutoff Switch O.C.
Radio Coupler 5,000 Stabilization Computer 7,500 Stabilization Computer Rack O.C.
Servo Amplifier 7,500 Servo Drive 6,000 Servo Bracket O.C.
Trim Coupler 5,000 Vertical Gyro 2,500
Communications, Chapter 23 May be determined by assigned inspector.
Electrical Power, Chapter 24 Box, Current Differential Transformer O.C.
Box-Generator Current Transformer & Fuse O.C.
Battery O.C.
Constant Speed Drive, 20 KVA E.O.
Circuit Breakers O.C.
Control, CSD Frequency & Load Controller 3,500 Disconnect Assembly E.O.
External Power Receptacle O.C.
External Power Relay 7,000 Generator, 20 KVA 1,500 Generator and Bus Tie Relays 3,500 Indicator, AC & DC Loadmeter O.C.
Indicator, AC Frequency O.C.
Panel, Frequency Reference 3,500 Effective date November 6, 1964 PAGE 4 of 20 PAGES
OPERATIONS SPECIFICATIONS
AIRCRAFT MAINTENANCE DOUGLAS DC-8/F Overhaul Inspection & Period Check Period Electrical Power, Chapter 24 (continued) Panel, Bus Protection OC Panel, Generator Control 2,000 Rectifier, Blocking OC Relay, AC & DC Monitor 7,000 Shaft Assembly, Constant Speed Drive EO Switches OC Transformer, Rectifier External Power Control OC Transformer Rectifier OC Voltmeter AC, Voltmeter DC OC Voltage Regulator 3,500
Equipment/Furnishings, Chapter 25 May be determined by assigned inspector.
Fire Protection, Chapter 26 Amplifier, Engine Fire Detection OC Bell, Fire Warning OC Cable Assembly, Engine Sector Detector Element OC Container and Valve Assembly, Fire Extinguisher * Detector, Cargo Compartment Overheat OC Lamp Assembly, Fire Warning OC Switch, Test OC Valve Assembly, Double Check Tee 12,500 Valve, Two Way Direction 12,500 * Hydrostatic and life limits shall be entered here and shall not exceed those set forth in Part 173, Chapter I, Subtitle "B" of CFR Title 49.
Flight Controls, Chapter 27 Actuator, Pitch Trim Compensator 4,000 Accumulator, Flight Spoiler Hydraulic 15,000 Bus, Installation Aileron OC Cylinder Assembly, Aileron Tab Lockout 14,000 Control Assembly, Pilot and Copilot Rudder Pedal OC Cylinder & Control Valve Assembly Rudder Power 7,000 Column Assembly, Pilots Control Wheel OC Computer, Pitch Trim Compensator 4,000 Cylinder & Link Assembly, Flap Actuating 14,000 Effective date _____________________ Page 5 of 20 Pages
OPERATIONS SPECIFICATIONS
AIRCRAFT MAINTENANCE DOUGLAS DC-8/F Overhaul Inspection &
Period Check Period Flight Controls, Chapter 27 continued Cylinders, Flap Lockout 17,000 Cylinder Assembly, Spoiler Actuator 14,000 Cylinder, Valve & Gland Assembly, Flight Spoiler 12,500 Cylinder, Ground Spoiler Actuating 12,500 Cylinders, Slot Door Actuating 14,000 Damper Assembly, Aileron 7,000 Damper Assembly, Elevator & Rudder O.C.
Drive Assembly, Horizontal Stabilizer O.C.
Filter Assembly, Aileron Power System O.C.
Filter Assembly, Rudder Power System O.C.
Filter Assembly, Flight Spoiler Hydraulic System O.C.
Heater, Stall Warning O.C.
Hose Assembly, Fire Actuating 12,500 Indicator, Flight Spoiler Hydraulic Pressure O.C.
Jack Screw Assembly 14,000 Lift Transducer 3,500 Lift Computer 7,000 Motor & Brake Assembly, Hydraulic Power 10,500 Motor & Brake Assembly, Horizontal Stabilizer Electric Drive 7,000 Mechanical Assembly, Flight Spoiler Lateral Control O.C.
Mechanism, Slot Door Actuating O.C.
Override Assembly, Outboard Ailerons O.C.
Pump & Motor Assembly, Flight Spoiler Hydraulic 5,000 Reservoir Assembly, Flight Spoiler Hydraulic 12,500 Switch, Rudder & Aileron Hydraulic Power O.C.
Spring Assembly, Elevator Load Feel & Centering 14,000 Shutoff Control Valves, Horizontal Stabilizer Hydraulic System 14,000 Shaker, Control Column 3,500 Spring Assembly, Rudder Load & Feel Trim 17,000 Switch, Spoiler Limit O.C.