737-warning-lights-Presentation
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Transcript of 737-warning-lights-Presentation
Maintenance & Engineering Training
MASTER WARNING AND CAUTION
ATA 31
Class Guidelines
Introductions
Presenter
Presentation Notes
The successful instructor channels student motivation and guides the student toward the goal of learning aviation skills through education, experience, practice, and study. the role of managers (or instructors) is to develop the potential in employees (students) and help them to release that potential
Got a train to catch?
Class Guidelines Class times: 0800-1530
Lunch - 1130-1230 Class Guidelines
Rest Rooms
Class Guidelines
Breaks - Every 45 to 60 minutes
Class Guidelines
Building Safety & Security Considerations
Class Guidelines
Class Sign-In Sheet
Class Participation Class Guidelines
Presenter
Presentation Notes
The successful instructor channels student motivation and guides the student toward the goal of learning aviation skills through education, experience, practice, and study. the role of managers (or instructors) is to develop the potential in employees (students) and help them to release that potential Notes for conversation so they can have an idea of transition Stages of Skill Acquisition Students make their way from beginner to expert via three stages of skill knowledge acquisition, helping students transition from beginner to expert. The development of any skill acquisition (or the learning process) has three characteristic stages: cognitive, associative, and automaticity. An instructor must learn to recognize each stage in student performance in order to assess student progress. Cognitive learning has a basis in factual knowledge Performing the skill at this stage typically requires all the student’s attention; Associative Stage Practice is necessary in order for the student to learn how to coordinate muscles with visual and tactile senses. Automatic Response Stage Automaticity is one of the by-products of practice. As procedures become automatic, less attention is required to carry them out, so it is possible to do other things simultaneously .
The material cover on this course is for training and familiarization
purpose only and is not intended to supersede the Manufacturer Maintenance Manual or any other regulatory approved data. Always refer to your company procedures and never deviate from approved Technical Data. You are always responsible for the work you sign for. Your SAFETY and those around you must be your #1 priority.
Presenter
Presentation Notes
Legal disclosure The material cover on this course is for training and familiarization purpose only and is not intended to supersede the Manufacturer Maintenance Manual or any other regulatory approved data. Always refer to your company procedures and never deviate from approved Technical Data. You are always responsible for the work you sign for. Never sign for things you did not do.
Introductions
Presenter
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A training syllabus will be provided Defined course objectives Show the student how the training helps him or her attain specific goals.
• Name
• Company or Organization
• Responsibility
Introductions
Presenter
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Name Company Responsibility Type of airplanes Years of svc Interest Hobbies
Questions ???
General Familiarization and Line Maintenance Class
for Master Warning and Caution lights on Boeing 737-800
Student Objectives
Locate Major Components and Describe Their Functions Describe Panel Operation and Interface Describe Electrical Power, Control and
Distribution Describe Routine Servicing Review MEL and Troubleshooting
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Look at major components and description Panel operation and interface Electrical power, control and distribution Routine line service MEL and FIM
Master Warning and Caution
The master caution system provides a visual alert to the flight crew of unsafe airplane systems operation.
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What is Master Warning and caution? The master caution system provides a visual alert to the flight crew for incorrect airplane systems operation.
Master Warning and Caution
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COMPONENTS The master caution system receives discrete ground signals from many airplane systems. The discrete ground signals cause the MASTER CAUTION lights and the system annunciator lights to come on. This gives a visual alert of system failures. The components for the master caution system are in the flight compartment. The power goes through the annunciation and dimming module. The annunciation and dimming module is in the P6 circuit breaker panel together with relays and modules for the master dim and test system or under the flight deck.
The annunciator and dimming module is located above access panels in the top of the nose landing gear wheel well and is mounted to the J19 panel which is fastened to the bottom of the flight compartment floor.
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AMM 33-18-00 The annunciator and dimming module is located above access panels in the top of the nose landing gear wheel well and is mounted to the J19 panel which is fastened to the bottom of the flight compartment floor.
INTERFACE
Ground Signal
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The 28v dc battery bus and the 28v dc bus 1 supply power for the master caution lights and the system annunciator lights. The 28v dc power goes through switches in the master caution lights. The power goes through the annunciation and dimming module. When you select bright (BRT) on the master lights control on P1, the voltage is 28 volts. When you select DIM on the master lights control, the voltage is 16 volts. The control of the left system annunciator lights come from these components: * Flight control panel (FLT CONT) * IRS master caution unit (IRS) * Flight control panel (FUEL) * Generator drive and standby power panel (ELEC) * APU indicator panel (APU) * Overheat/fire protection panel (OVHT/DET). The control of the right system annunciator lights come from these components: * Window heat panel (ANTI-ICE) * Hydraulic panel (HYD) * System annunciators (DOORS) * Engine panel (ENG) * Flight recorder/Mach airspeed warning panel (OVERHEAD) * Air conditioning/bleed air control panel (AIR COND).
INTERFACE WITH A/C
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ON THIS AIRCONDITIONING SYSTEM SCHEMATICH WE CAN SEE HOW THE FAULT PROCESSING IN THE ZONE TEMP CONT CREATE A GROUND FOR THE PANEL FROM THE “OR” GATE
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Here from the previous schematic E will take us to the ground for the Master Caution
* Flight control panel * IRS master caution unit * Flight control panel * Generator drive and standby power panel * APU indicator panel * Overheat/fire protection panel * Window heat panel
* Hydraulic panel * System annunciators * Engine panel * Flight recorder/Mach airspeed warning panel * Air conditioning/bleed air control panel.
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The annunciation system indication is divided in two section to provide better flight deck control. As it is displayed on this picture, each annunciator panel or six-pack will advise that particular flight crew about a situation on his area, all he has to do is look up. The control of the left system annunciator lights come from these components: * Flight control panel (FLT CONT) * IRS master caution unit (IRS) * Flight control panel (FUEL) * Generator drive and standby power panel (ELEC) * APU indicator panel (APU) * Overheat/fire protection panel (OVHT/DET). The control of the right system annunciator lights come from these components: * Window heat panel (ANTI-ICE) * Hydraulic panel (HYD) * System annunciators (DOORS) * Engine panel (ENG) * Flight recorder/Mach airspeed warning panel (OVERHEAD) * Air conditioning/bleed air control panel (AIR COND).
Recall Check • When performing a Recall Check. – Depress and hold either System Annunciator Light Panel. – Verify that both MASTER CAUTION Lights illuminate. – Verify all lights have illuminated in both Annunciator Light Panels. – Release the System Annunciator Light Panel. If the MASTER CAUTION Lights remain illuminated, with or without individual System Annunciator Lights, investigate the cause.
Under normal condition (no other malfunctions, good weather, etc.), recall faults that reset when the MASTER CAUTION Light is pressed are dispatchable and should be written up at the next destination. It is not necessary to call Maintenance or run abnormal procedures from the QRH in these instances.
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The Master Caution Recall system alerts the crew to malfunctions in dual redundant systems. For example, each A/C Pack has two independent digital controllers. Each controller can control the A/C Pack through all phases of flight. If a single controller fault occurs when the system annunciator panel (the “six pack”) is pressed, the recall system will illuminate the AIR COND annunciator and affected PACK Light on the Overhead Panel. If these annunciations extinguish when the MASTER CAUTION Light is pressed, a single fault is confirmed. If the PACK Light latches during recall on the ground, the MEL allows one system to be placarded by the flight crew. Since the pack has not failed, the abnormal PACK Light procedure in the QRH is not applicable. If both controllers fail, then the MASTER CAUTION, AIR COND annunciator and PACK Light will illuminate automatically. Only the PACK Light remains illuminated when the MASTER CAUTION Light is pressed.
ANNUNCIATION LIGHT RESET and RECALL
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Reset of the Master Caution Light When you push the master caution light, you remove power to all the master caution circuits. This causes the circuits to reset the master caution annunciation. These results occur: * Master caution lights go off * System annunciator lights go off * Fault lights on the individual panels remain on if the panel still senses a fault. The master caution lights and the system annunciator lights remain off until a new fault occurs. When a new fault occurs, these lights come on: * Fault light on the individual panel which senses the fault * Master caution lights * Light on the system annunciator which agrees with the fault. Recall of the System Annunciator Lights When you push and hold the system annunciator lights, the recall signal goes to all the components which cause the lights on the system annunciators to come on. This causes all the lights on the system annunciators to come on. When you release the system annunciator lights, the system annunciator lights show only the systems which have faults.
6 Pack Warning and Caution Lamp Replacement
CAUTION: REMOVE THE LAMP HOUSING WITH YOUR FINGERS ONLY. IF YOU USE A TOOL TO HOLD THE LAMP HOUSING, THE TOOL CAN CAUSE DAMAGE TO THE HOUSING.
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At the captain’s or FO’S main instrument panel, P1, set the switch for the master dim and test lights to TEST. Some annunciator lights can be re-lamp but others the light assembly is replaced as a unit. As fault isolation, the particular C/B for that panel can be reset in case there is a malfunction with the panel itself.
MEL
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Affected system light(s) - LIGHT INOP OPERATIONS (O) 1. Check that associated system indicator light(s) on associated panel is operating normally. 2. If the MASTER CAUTION light illuminates with none of the annunciator lights illuminated, it can be assumed that the system with the placard LIGHT INOP is affected. 3. Just prior to descent, check the associated panel for any light indications associated with the inoperative system annunciator light(s).
REVIEW
• The six pack lights are control by applying voltage or ground?
• What side is the hydraulic warning for the six-pack indicator?
• What controls the brightness of the warning indication?
Presenter
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Ground First Officer Dimming module
Q&A
