MEL

21 — Air Conditioning 21-01Air Conditioning Packs 21-02Pack Air Flow/Shutoff Valves 21-03Pack Trip Warning Systems 21-05Pack Ram Air Systems 21-07RAM DOOR FULL OPEN Indicating Lights 21-10Cabin Rate of Climb Indicator 21-11Cabin Altitude Warning System 21-12Cabin Altitude Indicator 21-13Cabin Differential Pressure Indicator 21-14Cabin Differential Pressure Indicator 21-15Main Outflow Valve 21-16Pressure Relief Valves 21-17Temperature Indicators 21-18Duct Overheat Warning Lights 21-19Passenger Cabin Temperature Control Systems 21-21Flight Deck Temperature Control Systems 21-26Ground Preconditioned Air Connection Check Valve 21-27Electrical/Electronic Equipment Cooling Blowers 21-31Recirculation Fan(s) 21-32Pack Temperature Control System(s) (Electronic Pack/Zone Controller or Pack Flow Controller) 21-33Pack Temperature Control Valves 21-34Standby Pack Temperature Control Valves 21-35Trim Air Pressure Regulating and Shutoff Valve 21-36Trim Air Modulating Valves 21-38Outflow Valve Position Indicator 21-39Trim Air Check Valves 21-40Equipment Cooling Automatic Flow Control Valve/Overboard Exhaust Valve 21-41Forward Entry Door Area Heater Systems (STC SA22-6) 21-42Equipment Cooling Low Flow Detector Systems 21-43Equipment Cooling Air Filter 21-44Fan Bypass Check Valves 21-45Air Distributor Riser Valves 21-49Return Air Grille 21-50Flight Deck Foot and Shoulder Heater Systems 21-56Main Deck Cargo Compartment Air Shutoff Valve (STC SA25-72) 22 — Auto Flight 22-01Autopilot Systems • S 22-02Autopilot Disengaged Warning System 22-03Yaw Damper 22-04Autothrottle System 22-05Mach Trim Systems 22-08Autothrottle Disengage Lights 22-11Autothrottle Disengage Lights 22-14Mode Control Panel Selectors 22-15Mode Control Panel Switches/Paddles 22-16Mode Control Panel Windows 22-17Takeoff/Go-Around (TO/GA) Switches 22-18Mode Control Panel Switch Lights 22-19Thrust Mode Annunciator/ Thrust Mode Display 22-20Automatic Landing System 23 — Communications 23-01Flight Deck Speakers 23-02Passenger Address System 23-03Communication Systems (VHF and UHF) 23-04Crewmember Interphone System 23-06Communication Systems (VHF and UHF) 23-09ACARS System 23-10Cockpit Voice Recorder System (CVR) 23-11High Frequency (HF) Communication System 23-12Emergency Locator Transmitter (ELT) 23-13Flight Crew Audio Selector/Control Panels 23-14Flight Deck Headsets Earphones/Headphones and Boom Microphones 23-16Push-To-Talk (PTT) Switches 23-17Flight Deck Hand Microphones 23-18Satellite Communication System (SATCOM) 23-19Alerting System (Audio/Visual) 23-20Handset Systems 24 — Electrical Power 24-01Engine Driven Generator Systems 24-02APU Generator System 24-03APU Generator System 24-07Frequency Meter 24-08AC Volts Indication 24-09AC Ammeters 24-11External Power System 24-12GEN OFF BUS Lights 24-14BAT DISCHARGE Light 24-15TR UNIT Light 24-16ELEC Light 24-17DC Ammeter Indication 24-18DC Volts Indication 24-19APU GEN OFF BUS Light 25 — Equipment / Furnishings 25-01Megaphones 25-03Flight Attendant Seat Assembly 25-05Cargo Compartment Restraint Components – Main Deck 25-06Passenger Seats 25-10Non-essential Equipment and Furnishings (NEF) 25-11Observer Seat(s) 25-12Portable Flashlight Holders/Flashlights 25-16Emergency Evacuation Signal System 25-17Emergency Medical Equipment Equipment 25-18Flotation Equipment (Crew and Passengers) 25-19Dual Cockpit USB Power System 25-20Exterior Lavatory Door Ashtrays 25-21Flight Crew Seats 25-22Galley/Lavatory Waste Receptacle Access Doors / Covers 25-24Storage Bins/Cabin, Galley, and Lavatory Storage Compartments / Closets 25-31Supernumerary Seats 25-33Lavatory NO SMOKING Placards 26 — Fire Protection 26-01Engine and APU Fire Extinguisher Discharge Lights 26-02Engine Overheat and Fire Detection Systems 26-03Portable Fire Extinguishers 26-04Wheel Well Fire Detection System 26-06APU Fire Shutoff System 26-07APU Fire Extinguisher System 26-08APU Fire Detection System 26-09ENGINE/APU FIRE EXTINGUISHER TEST SYSTEM (EXT TEST) (SQUIB TEST) 26-10Fire Warning Bell 26-12Wing-Body Overheat Detector System (Left) 26-13Wing-Body Overheat Detector System (Right) 26-14Main Deck Cargo Compartment Fire Detection/Suppression Systems 26-15Lavatory Fire Extinguisher Systems 26-16Lavatory Smoke Detection System 26-18Wing-Body Overheat Test System 26-19Lower Cargo Compartment Fire Detection / Suppression Systems 26-25Engine Start Lever Fire Indication Lights 27 — Flight Controls 27-04Leading Edge Flap/Slat Position Light Systems 27-07Auto Speed Brake System 27-08Flap Load Limiter System 27-10FEEL DIFF PRESS Light System 27-11Auto Slat Fail Light System 27-12Auto Slat Systems 27-14Rudder Trim Indicator 27-16SPEED BRAKE / SPEEDBRAKES EXTENDED Light 27-17Wheel to Rudder Interconnect System (WTRIS) 27-20Speedbrake Load Alleviation System 27-21STBY RUD ON Light 27-23Elevator Tab Control Springs 27-24Rudder Pedal Adjustment 28 — Fuel 28-01Fuel Boost Pumps (Main Tanks) 28-02Fuel Boost Pumps (Center Tank) 28-03Fuel Boost Pump Low Pressure Warning Light Systems 28-04APU Fuel Valve 28-05Crossfeed VALVE OPEN Light 28-06Flight Deck Fuel Quantity Indicators (Main Tanks) 28-07Flight Deck Fuel Quantity Indicator (Center Tank) 28-08Fuel Temperature Indicator 28-09Fuel Quantity Totalizer 28-10Pressure Fueling System 28-11Fueling Bay Fuel Cap 28-12Refueling Control Panel Quantity Indicators 28-16Fuel Measuring Sticks/Dripsticks 28-17Fuel Scavenge System 28-21Fuel Quality Test Switches 28-22FUEL/SPAR VALVE CLOSED Lights 28-25Center Tank Fuel Boost Pump Automatic Shutoff System 28-26Fuel Shutoff Valve Battery and Charger 29 — Hydraulic Power 29-02System B Pumps 29-03System Pressure Indications (A and B) 29-04System A Pump Low Pressure Indication Systems 29-05System B Pump Low Pressure Indication Systems 29-07System A and B Overheat Light System 29-09Hydraulic Quantity Low Level Light System (Standby System) 29-10System A Pumps 29-11System A Quantity Indication System (Flight Deck) 29-12Standby System Low Pressure Light 29-13Hydraulic Reservoir Pressurization System Sources 29-15System B Quantity Indication System (Flight Deck) 29-16Hydraulic Reservoir Air Pressure Indicator (Wheel Well) 29-17Hydraulic Reservoir Quantity Indicator (Wheel Well) 29-18Hydraulic Reservoir Fill System (Wheel Well) 30 — Ice and Rain Protection 30-01Wing Anti-Ice Valves 30-02Wing Anti-Ice Valve Position Lights 30-03Engine and Nose Cowl Anti-Ice Valves 30-04Engine and Nose Cowl Anti-Ice Valve Position Lights or TAI Indications 30-05Pitot/Static Probe Heaters 30-06Vertical Stabilizer Pitot Heaters (Elevator and Rudder Feel Systems) 30-07Total Air Temperature Probe Heater 30-08Angle of Attack Sensor Heater(s)/Stall Warning System Sensor Heater(s)/Alpha Vane Heater(s) 30-09Pitot, Pitot/Static and Temperature Probe Heater Lights 30-11Electrically Heated Windshields 30-12Windshield Defog System 30-13Windshield Wiper System(s) 30-15Windshield Perimeter Heater(s) 30-17COWL ANTI-ICE Lights 30-18Alpha Vane Heater Light Systems 30-19Drain Mast Heaters 30-21Control Stand Wing Anti-Ice Switches 30-22Air Data Probe Heat Systems 31 — Indicating / Recording 31-01Clocks 31-02Flight Data Recorder System (FDR) 31-08Common Display System (CDS) 31-09Remote Light Sensor System 31-10Speed Reference Selector 31-14TAKEOFF CONFIG Light 32 — Landing Gear 32-02Antiskid System 32-03Parking Brake Valve 32-04Parking Brake Light 32-07Automatic Brake System 32-08Rudder Pedal Nose Wheel Steering System 32-10Alternate Antiskid Valves 32-12Nose Wheel Steering Switch 32-13Hydraulic Brake Pressure Indication System 32-14Gear Retraction Braking System 32-15Landing Gear Selector Valve Bypass Module 32-16Landing Gear Actuation System 32-17Proximity Switch Electronics Unit (PSEU) System and Supplemental Proximity Sensor Electronics Unit (SPSEU) 32-18Landing Gear Alternate Extension System 32-19Main Landing Gear Uplock Springs 32-20Landing Gear Frangible Fitting 32-21Flap Landing Warning Switch, S138 33 — Lights 33-01Cockpit/Flight Deck/Flight Compartment and Instrument Lighting System 33-02Cabin Interior Illumination 33-03Passenger Lighted Information Signs and Notice System 33-04Lower Cargo Compartment Light Systems (Fwd/Aft) 33-05High Intensity or Strobe Lights System 33-06Anti-Collision Beacons 33-07Wing Illumination Lights 33-08Landing Lights 33-09Taxi Light 33-10Runway Turn Off Lights 33-11Wing Tip Position Lights 33-14Exterior Emergency Lighting System 33-15Interior Emergency Exit Lighting System 33-16System Annunciator Lights, Left and Right (Pilot's Light Shield) 33-17Flight Deck Master Lights Test and Individual Light's Press-to-Test Features 33-18Wheel Well Lights 33-19Floor Proximity Emergency Escape Path Marking System 33-20LOGO Light System 33-21Main Deck Cargo Compartment Lighting 33-23Master Dim System 33-25Service Area Light Systems (Nose, Electrical Equipment, Air Conditioning, Aft Accessory, APU, Tailcone Compartments, and Fueling Panel) 34 — Navigation 34-01Mach/Airspeed Indications 34-02Mach/Airspeed Warning Systems 34-03Altimeter Vibrators 34-04Static Air Temperature Indication 34-05Total Air Temperature Indication 34-07Standby Horizon Indicator 34-11Standby Magnetic Compass 34-12Flight Director Systems 34-13Distance Measuring Equipment Systems 34-14Marker Beacon Receiver System 34-15Weather Radar 34-16Radio Compass Systems (ADF) 34-17VHF Navigation Systems (VOR / ILS) 34-18ATC Transponders and Automatic Altitude Reporting System 34-20Radio Altimeter Systems 34-23True Airspeed Indication 34-25Altitude Alerting System 34-26Terrain Awareness and Warning System (TAWS) 34-32Instrument Transfer Switching System 34-35Inertial Reference Systems (IRS) 34-36Flight Management Computer System (FMCS) 34-37Windshear Warning and Flight Guidance System (Reactive) 34-38Pitch Limit Indication (PLI) 34-40Traffic Collision and Avoidance System (TCAS) 34-42Radio Magnetic Indicators (RMI) 34-45Global Positioning System (GPS) 34-48EFIS Control Panel 34-49Right IRS DC Power Supply System 34-54Integrated Standby Systems 34-55Vertical Situation Display (VSD) System 34-62GNSS with LPV Approach / ADS-B Systems 35 — Oxygen 35-02Passenger Service Units (PSUs) 35-03Oxygen Pressure Indicators 35-04Portable Oxygen Bottles or Units (including Masks and Hoses) 35-05Passenger Oxygen System 35-06Portable Protective Breathing Equipment (PBE) 36 — Pneumatics 36-01Manifold Isolation Shutoff Valve 36-02Ground Pneumatic Connector Check Valve 36-03Pre-Cooler Control Valves 36-04Pneumatic Pressure Indication Systems 36-05Engine Bleed Air Shutoff Valves (PRSOV) 36-06Dual Bleed Light System 36-08Engine Bleed Trip Off Lights 36-09High Stage Valves 38 — Water / Waste 38-01Potable Water Systems 38-02Lavatory Waste Systems 38-04Floor Drain Shutoff Valve (STC SA25-72) 44 — Cabin Systems 44-20RPM (Remote Power Unit) 46 — Information Systems 46-01Electronic Flight Bag (EFB) System 47 — Nitrogen Generation System 47-01Nitrogen Generation System (NGS) 49 — APU 49-01Auxiliary Power Unit (APU) 49-02APU Annunciator LOW OIL PRESSURE and OVER SPEED Lights 49-04APU Annunciator LOW OIL QUANTITY/MAINT Light 49-05APU EGT Indicator 49-06APU Inlet Door 49-07APU Bleed Air Valve 49-08APU DC Fuel Boost Pump 49-09APU Surge Control System 49-12APU Annunciator HIGH OIL TEMP / FAULT Light 49-15Start Power Unit 49-16Start Converter Unit 52 — Doors 52-03Door Warning Light System 52-05Left Main Cabin Door Pressure Stop Fittings 52-06Lower Cargo Doors Pressure Stop Fittings 52-07Entry/Service Door Hold-Open Latch Assemblies 52-09Lower Cargo Doors Door Balance Mechanism 52-13Main Cargo Door Lift/Operating Systems 52-14Lower Cargo Doors Hold Open Mechanism/Device 52-15Flight Lock System 52-16Main Cabin Exit/Slide (All-Cargo Configuration) 52-17Boeing / C&D Aerospace Enhanced Flight Deck Security Door Automatic Locking System (CAR 725.595) 52-18Boeing / C&D Aerospace Enhanced Flight Deck Security Door Dead Bolt 52-20Flight Deck Door Pressure Relief Panels 52-22Flight Deck Door Hold Open Device (e.g., Door Stop, Foot Plunger) 52-23Flight Deck Door Viewing Port 52-25Cargo Door Exterior Handle Recess/Hinge Spring Assemblies 73 — Engine Fuel and Control 73-04Fuel Filter Differential Pressure Warning Systems 73-05Fuel Flow Indication Systems 73-06Fuel Used Indicators 73-10Fuel Control ENG VALVE CLOSED Indicating System 73-11Electronic Engine Control (EEC) 73-12Electronic Engine Control (EEC) Alternate Power Supply System 74 — Ignition 74-01Ignition Systems 77 — Engine Indicating 77-02N1 Tachometers 77-05Vibration Indicating Systems 77-09Abnormal Start Indication Systems 78 — Exhaust 78-01Thrust Reverser Systems 78-07REVERSER Lights (Aft Overhead Panel) 79 — Oil 79-01Oil Quantity Indication Systems 79-02Oil Filter Bypass Warning Systems 79-04Oil Low Pressure Warning Systems 80 — Starting 80-01Starter Valve Open Indications 80-02Engine Starter Auto Cutout 80-03Starter Valves