Difference between revisions of "H-34 Choctaw/Maintenance and Diagnostics"

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<span class=sa-section>SECTION 11. MAINTENANCE AND DIAGNOSTICS</span>
+
<span class=sa-section>SECTION 10. MAINTENANCE AND DIAGNOSTICS</span>
  
 
=== General ===
 
=== General ===
Line 32: Line 32:
 
|Passive (P) ||Only direct causes will damage components and no accumulation of wear.  Crash damage and progression of existing damage (i.e., transmission chip will progress to transmission failure) in effect.
 
|Passive (P) ||Only direct causes will damage components and no accumulation of wear.  Crash damage and progression of existing damage (i.e., transmission chip will progress to transmission failure) in effect.
 
|-
 
|-
|Low (L) ||Crash damage, random failures, accumulation of wear in effect.  Failure rate at 25% of normal rate.
+
|L1 (1) ||Crash damage, random failures, accumulation of wear in effect.  Failure rate at 10% of normal rate.
 
|-
 
|-
|Medium (M) ||Crash damage, random failures, accumulation of wear in effect.  Normal failure rates.
+
|L2 (2) ||Crash damage, random failures, accumulation of wear in effect.  Failure rate at 25% of normal rate.
 
|-
 
|-
|High (H) ||Crash damage, random failures, accumulation of wear in effect.  Failure rate at 10 times normal rate.
+
|L3 (3) ||Crash damage, random failures, accumulation of wear in effect.  Failure rate at 50% of normal rate.
 +
|-
 +
|L4 (4) ||Crash damage, random failures, accumulation of wear in effect.  Failure rate at 75% of normal rate.
 +
|-
 +
|L5 (5) ||Crash damage, random failures, accumulation of wear in effect.  Failure rate at normal rate.
 +
|-
 +
|L6 (6) ||Crash damage, random failures, accumulation of wear in effect.  Failure rate at 1.5 times normal rate.
 +
|-
 +
|L7 (7) ||Crash damage, random failures, accumulation of wear in effect.  Failure rate at 2 times normal rate.
 +
|-
 +
|L8 (8) ||Crash damage, random failures, accumulation of wear in effect.  Failure rate at 5 times normal rate.
 +
|-
 +
|L19 (9) ||Crash damage, random failures, accumulation of wear in effect.  Failure rate at 10 times normal rate.
 
|}
 
|}
  
=== Replaceable Components ===
+
=== Time-Limited Components ===
  
The following table lists all of the repairable components, the nominal lifetime of each component in hours, symptoms of a component failure, and causes of excess wear on the component.
+
The following table lists all of the time-limited components, the nominal lifetime of each component in hours, symptoms of a component failure, and causes of excess wear on the component.
  
 
{| class=wikitable
 
{| class=wikitable
Line 49: Line 61:
 
!Wear Causes
 
!Wear Causes
 
|-
 
|-
|#1 Engine
+
|Engine
 
|100
 
|100
 
|
 
|
* Zero Torque and RPM
+
* Zero RPM
* Fire Indication
+
* Fire
 
''Warning Symptoms:''
 
''Warning Symptoms:''
* #1 ENG OIL QTY LOW light
+
* ENG CHIP light
* #1 ENG CHIP light
+
* Engine runs rough
 
|
 
|
 
*Low Fluids
 
*Low Fluids
*High Torque
+
*High MP
*High N2
+
*High RPM
 
*Faulty fuel filter
 
*Faulty fuel filter
 
*Use of improper fuel
 
*Use of improper fuel
|-
 
|#2 Engine
 
|100
 
|
 
* Zero Torque and RPM
 
* Fire Indication
 
''Warning Symptoms:''
 
* #2 ENG OIL QTY LOW light
 
* #2 ENG CHIP light
 
|
 
*Low Fluids
 
*High Torque
 
*High N2
 
*Faulty fuel filter
 
*Use of improper fuel
 
|-
 
|Auxiliary Power Unit
 
|100
 
|
 
* Failure to reach 100% RPM
 
|
 
*Low Fluids
 
 
|-
 
|-
 
|Main Rotor Blades
 
|Main Rotor Blades
Line 106: Line 96:
 
* M/R blade fails to turn
 
* M/R blade fails to turn
 
''Warning Symptoms:''
 
''Warning Symptoms:''
* XMSN CHIP MAIN light
+
* TRANS CHIP light
* XMSN OIL HOT
+
* Low MAIN GEAR BOX pressure
* XMSN OIL PRESS
+
* High MAIN GEAR temperature
 
|
 
|
 
*Low Fluids
 
*Low Fluids
Line 118: Line 108:
 
* T/R fails to turn
 
* T/R fails to turn
 
''Warning Symptoms:''
 
''Warning Symptoms:''
* XMSN CHIP TAIL light
+
* TAIL CHIP light
 
|
 
|
 
*Low Fluids
 
*Low Fluids
Line 128: Line 118:
 
* T/R fails to turn
 
* T/R fails to turn
 
''Warning Symptoms:''
 
''Warning Symptoms:''
* XMSN CHIP TAIL light
+
* TAIL CHIP light
 
|
 
|
 
*Low Fluids
 
*Low Fluids
 
*Excessive Rotor RPM
 
*Excessive Rotor RPM
 
|-
 
|-
|#1 Generator
+
|Generator
|20
 
|
 
* #1 GEN light
 
|
 
n/a
 
|-
 
|#2 Generator
 
 
|20
 
|20
 
|
 
|
* #2 GEN light
+
* GEN light
 
|
 
|
 
n/a
 
n/a
 
|-
 
|-
|#1 Eng. Fuel Filter
+
|Eng. Fuel Filter
|20
+
|25
 
|
 
|
* FWD FUEL BY PASS light
+
*Engine runs rough
 
|
 
|
 
*Use of improper fuel
 
*Use of improper fuel
|-
 
|#2 Eng. Fuel Filter
 
|20
 
|
 
* AFT FUEL BY PASS light
 
|
 
*Use of improper fuel
 
|-
 
|#1 Eng. Fire Extinguisher
 
|On Use
 
|
 
* PSI on bottle is low
 
* Bottle fails to activate
 
|
 
* Use of bottle
 
|-
 
|#2 Eng. Fire Extinguisher
 
|On Use
 
|
 
* PSI on bottle is low
 
* Bottle fails to activate
 
|
 
* Use of bottle
 
|-
 
|APU Fire Extinguisher
 
|On Use
 
|
 
* PSI on bottle is low
 
* Bottle fails to activate
 
|
 
* Use of bottle
 
|-
 
|Air Bottle
 
|On Use
 
|
 
* PSI on bottle is low
 
* Gear fails to go down when ALT GEAR DOWN handle is pulled.
 
|
 
*n/a
 
 
|-
 
|-
 
|Primary Hydraulic
 
|Primary Hydraulic
 
|20
 
|20
 
|
 
|
* PRI HYD PRESS light
 
 
* Low pressure indication on gauge
 
* Low pressure indication on gauge
 
* Sluggish controls
 
* Sluggish controls
Line 205: Line 148:
 
|20
 
|20
 
|
 
|
* PRI HYD PRESS light
 
 
* Low pressure indication on gauge
 
* Low pressure indication on gauge
 
* Sluggish controls
 
* Sluggish controls
Line 214: Line 156:
 
|20
 
|20
 
|
 
|
* Low pressure indication on gauge
 
 
* Hoist/Ramp fail to function
 
* Hoist/Ramp fail to function
 
|
 
|
 
* Operating with low fluids
 
* Operating with low fluids
 
|-
 
|-
|#1 Eng. Fuel Pump
+
|Eng. Fuel Pump
 
|30
 
|30
 
|
 
|
Line 226: Line 167:
 
* Use of improper fuel type
 
* Use of improper fuel type
 
|-
 
|-
|#2 Eng. Fuel Pump
+
|Fuel Boost Pump
 
|30
 
|30
 
|
 
|
* Engine fails to run without boost pumps
+
* Engine fails to start
 
|
 
|
 
* Use of improper fuel type
 
* Use of improper fuel type
 
|-
 
|-
|#1 Forward Boost Pump
+
|Battery
|30
+
|50
 +
|
 +
* Fails to charge
 +
|
 +
* Letting battery drain completely, or near completely
 +
|-
 +
|Wiring Harness (AC & DC)
 +
|400
 
|
 
|
* Light does not flicker when turned on
+
* DC1/DC2/AC1/AC2 Bus Failure
 +
** Failure of gauges
 
|
 
|
*n/a
+
* n/a
 
|-
 
|-
|#2 Forward Boost Pump
+
|Carburetor
|30
+
|50
 
|
 
|
* Light does not flicker when turned on
+
* Reduced Engine Power
 
|
 
|
*n/a
+
* TBD
 
|-
 
|-
|#1 Aft Boost Pump
+
|Supercharger
|30
+
|50
 
|
 
|
* Light does not flicker when turned on
+
* Reduced Engine Power
 
|
 
|
*n/a
+
* TBD
 
|-
 
|-
|#2 Aft Boost Pump
+
|Left/Right Mags
|30
+
|40
 
|
 
|
* Light does not flicker when turned on
+
* Higher than normal throttle needed for same power
 +
* Engine cut-out when failed mags selected.
 
|
 
|
*n/a
+
* n/a
 
|-
 
|-
|Battery
+
|Clutch
|50
+
|40
 
|
 
|
* Fails to charge
+
* Rotors fail to engage on start-up
 
|
 
|
* Letting battery drain completely, or near completely
+
* Leaving clutch pump unnecessarily engaged.
 
|-
 
|-
|Landing Gear
+
|Starter
|100
+
|40
 
|
 
|
* Landing gear does not go up or down
+
* Failure of engine to start
* Gear indicator lights not all green when gear down
+
* No sound from starter when active
 
|
 
|
* Hard landing
+
* Running starter too long
 
|-
 
|-
|Wiring Harness (AC & DC)
+
|Main Hub
|400
+
|50
 
|
 
|
* DC Bus Failure
+
* Control anomalies in cyclic control
** Failure of displays
 
* AC Bus Failure
 
** Fuel gauges read zero
 
 
|
 
|
 
* n/a
 
* n/a
 
|-
 
|-
|#1 Eng. Fuel Controller
+
|#1 Inverter
|75
+
|30
 
|
 
|
* Engine RPM does not remain stable
+
* Failure of AC1 bus devices
 +
* INST PWR warning light illuminated
 
|
 
|
* Use of improper fuel
+
n/a
*Faulty Fuel Filter
 
 
|-
 
|-
|#2 Eng. Fuel Controller
+
|#2 Inverter
|75
+
|30
 
|
 
|
* Engine RPM does not remain stable
+
* Failures of AC2 bus devices.  INST PWR warning light illuminates when generator is active and NO 2 INV selected.
 
|
 
|
* Use of improper fuel
+
*  
*Faulty Fuel Filter
 
 
|}
 
|}
  
Line 329: Line 275:
 
=== Maintenance Table ===
 
=== Maintenance Table ===
  
[[File:s61-workbench.jpg|thumb|right|
+
[[File:s58-workbench.jpg|thumb|right|
 
<figure id="fig:workbench"><caption>S61 Maintenance Workbench</caption></figure>
 
<figure id="fig:workbench"><caption>S61 Maintenance Workbench</caption></figure>
 
]]
 
]]
  
The S61R comes with a maintenance workbench (see <xr id="fig:workbench" />) that can be used to monitor component times and replace components.  Smaller components are laying on or under the table, while larger components are on palates or boxes near the bench.  A logbook on the bench shows which aircraft is being worked on, and a laptop shows the time data for all helicopter components.  Clicking on a component while the workbench is not connected to a helicopter will bring up a message indicating what it is.  For example, clicking on the battery will display the message:
+
The S-58/H-34 comes with a maintenance workbench (see <xr id="fig:workbench" />) that can be used to monitor component times and replace components.  Smaller components are laying on or under the table, while larger components are on palates or boxes near the bench.  A logbook on the bench shows which aircraft is being worked on, and a laptop shows the time data for all helicopter components.  Clicking on a component while the workbench is not connected to a helicopter will bring up a message indicating what it is.  For example, clicking on the battery will display the message:
  
  [20:06:59] SA - S61-workbench - v1.0: You inspect the battery.  It appears to be suitable as a replacement part.
+
  [20:06:59] SA - S58-workbench - v1.0: You inspect the battery.  It appears to be suitable as a replacement part.
  
 
It is suggested that you familiarize yourself with all the components on the workbench by clicking on them.  Clicking on any location other than a component will bring up the menu with the following options:
 
It is suggested that you familiarize yourself with all the components on the workbench by clicking on them.  Clicking on any location other than a component will bring up the menu with the following options:
Line 358: Line 304:
 
==== Maintenance Laptop ====
 
==== Maintenance Laptop ====
  
[[File:s61-laptop.jpg|thumb|right|
+
[[File:s58-laptop.jpg|thumb|right|
<figure id="fig:laptop"><caption>S61 Maintenance Laptop</caption></figure>
+
<figure id="fig:laptop"><caption>S58 Maintenance Laptop</caption></figure>
 
]]
 
]]
  
Line 376: Line 322:
 
Before you replace a component, the appropriate access panels must be open.  For example, to replace the #2 engine, you must open the panel for the #2 engine.  Components are replaced by clicking on the component on the workbench.  If only one type of that component is used in the helicopter, a menu asking you to confirm the installation will be posted.  Click "Yes" to install the component.  If the appropriate access door is not open, you will get a message such as:
 
Before you replace a component, the appropriate access panels must be open.  For example, to replace the #2 engine, you must open the panel for the #2 engine.  Components are replaced by clicking on the component on the workbench.  If only one type of that component is used in the helicopter, a menu asking you to confirm the installation will be posted.  Click "Yes" to install the component.  If the appropriate access door is not open, you will get a message such as:
  
  [20:27:17] SA - S61-workbench - v1.0: You cannot access that without opening the required access doors.
+
  [20:27:17] SA - S58-workbench - v1.0: You cannot access that without opening the required access doors.
  
 
Otherwise, the component will be replaced, and the component time data updated on the laptop.  For component types that are used in multiple places, you will be shown a menu asking where that component should be installed.  Select the location to replace the component.
 
Otherwise, the component will be replaced, and the component time data updated on the laptop.  For component types that are used in multiple places, you will be shown a menu asking where that component should be installed.  Select the location to replace the component.
  
IMPORTANT NOTE: Replacement parts are shipped without fluids.  Be sure to add fluid to the component before first use, or you will be replacing it again very soon.
+
IMPORTANT NOTE: Replacement parts are shipped without fluids.  Be sure to add fluids to components that require fulids before first use, or you will be replacing it again very soon.
 +
 
 +
==== Light Bulb Replacements ====
 +
 
 +
Most indicator lights in the helicopter can tested by pressing them.  Indicator lights are replaced by clicking on the box of bulbs on the workbench.  Clicking the box will replace all indicator bulbs in the aircraft.
 +
 
 +
==== Spark Plug Replacements ====
 +
 
 +
Each of the 9 cylinders on the engine has two spark plugs, a left and a right.  The condition of the plugs in a cylinder can be checked by clicking that cylinder.  If a damaged spark plug is detected, it can be replaced by clicking on the box of spark plugs on the workbench.  You will be prompted for which spark plug to replace by cylinder number and left or right.
  
 
==== Online Access to Component Table ====
 
==== Online Access to Component Table ====
Line 388: Line 342:
 
  https://www.shergoodaviation.com/aircraft-status.php?n=XXXXXX
 
  https://www.shergoodaviation.com/aircraft-status.php?n=XXXXXX
  
where XXXXXX is replaced with your tail number.
+
where XXXXXX is replaced with your tail number.  Be sure to log into your web account before using this link.  You can only view stats on aircraft that you own.

Latest revision as of 17:06, 31 August 2022

SECTION 10. MAINTENANCE AND DIAGNOSTICS

1 General

The S-58/H-34 has 24 replaceable components with tracked lifetimes. Component lifetimes are tracked as a function of the HOBBS time of the helicopter. As a component ages, its failure rate will increase, increasing rapidly once its lifetime has expired. It is recommended that components be replaced at their individual lifetimes. In addition to the age of a component, excess wear is also tracked. Any mishandling of the aircraft (exceeding limits, etc) will result in wear accumulation by the affected component. Wear is not directly viewable but will affect the failure rate of the component, causing it to fail earlier than it might otherwise have failed.

Component times, wear and failure status are all synced with the Shergood servers. Whenever a new copy is rezed, the rezed helicopter will sync its component status with the server. Component times are synced by tail number, so if you have multiple tail numbers registered, each one will have its own set of component times.

2 Component Failure Rates

Figure 1: Hazard rate function for component with 20 hour lifetime.

Failures in the S-58/H-34 are individually calculated for each component based on the age and wear of the component according to a "hazard rate function". The hazard rate function shows the instantaneous failures/hour of a component as a function of the age of the component (with wear being treated as additional age). Figure 1 shows an example base hazard rate function for a component with a 20 hour lifetime. As you can see, the initial hazard rate is very small (but non-zero), and increases rapidly past the 20 hour lifetime of that component. This results in the possibility for components that fail early, a higher failure possibility as the component ages, and a very high chance of failure if components are not replaced at the end of their lifetime.

The base hazard rate is modified by the following factors:

  • Failure Mode - A Failure mode multiplier of Low (0.25), Medium (1.0), and High (10.0) is applied to the based hazard rate for the component.
  • Fluid Levels - When operating at fluid (oil or hydraulic fluid) levels below 50%, the hazard rate for that component is increased (as well as causing wear).
  • Misuse - When a component is misused (e.g., exceeding max rpm or torque) the hazard rate is increased while the condition is in effect. In addition, wear is added to the component.

3 Failure/Fragile Mode

The handling of failures and crash damage is handled by the "Failures" and "Fragile" options in the "@Option" menu. When "Fragile" is on, crashes are detected and can cause damage to the helicopter. When "Fragile" is off, an information message is issued, but the crash is otherwise ignored. The "Failures" option has the effects shown in the following table:

Mode Description
None (N) No Failures, and no accumulation of wear. Component times will accumulate normally, but will have no effect.
Passive (P) Only direct causes will damage components and no accumulation of wear. Crash damage and progression of existing damage (i.e., transmission chip will progress to transmission failure) in effect.
L1 (1) Crash damage, random failures, accumulation of wear in effect. Failure rate at 10% of normal rate.
L2 (2) Crash damage, random failures, accumulation of wear in effect. Failure rate at 25% of normal rate.
L3 (3) Crash damage, random failures, accumulation of wear in effect. Failure rate at 50% of normal rate.
L4 (4) Crash damage, random failures, accumulation of wear in effect. Failure rate at 75% of normal rate.
L5 (5) Crash damage, random failures, accumulation of wear in effect. Failure rate at normal rate.
L6 (6) Crash damage, random failures, accumulation of wear in effect. Failure rate at 1.5 times normal rate.
L7 (7) Crash damage, random failures, accumulation of wear in effect. Failure rate at 2 times normal rate.
L8 (8) Crash damage, random failures, accumulation of wear in effect. Failure rate at 5 times normal rate.
L19 (9) Crash damage, random failures, accumulation of wear in effect. Failure rate at 10 times normal rate.

4 Time-Limited Components

The following table lists all of the time-limited components, the nominal lifetime of each component in hours, symptoms of a component failure, and causes of excess wear on the component.

Description Lifetime Failure Symptoms Wear Causes
Engine 100
  • Zero RPM
  • Fire

Warning Symptoms:

  • ENG CHIP light
  • Engine runs rough
  • Low Fluids
  • High MP
  • High RPM
  • Faulty fuel filter
  • Use of improper fuel
Main Rotor Blades 200
  • Rotor blade fails to turn
  • Hard Landing
  • Collective /w Low RPM
Tail Rotor Blades 200
  • T/R blade fails to turn
  • Hard Landing
Main Transmission 150
  • M/R blade fails to turn

Warning Symptoms:

  • TRANS CHIP light
  • Low MAIN GEAR BOX pressure
  • High MAIN GEAR temperature
  • Low Fluids
  • Excessive Rotor RPM
Tail Transmission 150
  • T/R fails to turn

Warning Symptoms:

  • TAIL CHIP light
  • Low Fluids
  • Excessive Rotor RPM
Intermediate Transmission 150
  • T/R fails to turn

Warning Symptoms:

  • TAIL CHIP light
  • Low Fluids
  • Excessive Rotor RPM
Generator 20
  • GEN light

n/a

Eng. Fuel Filter 25
  • Engine runs rough
  • Use of improper fuel
Primary Hydraulic 20
  • Low pressure indication on gauge
  • Sluggish controls
  • Operating with low fluids
Auxiliary Hydraulic 20
  • Low pressure indication on gauge
  • Sluggish controls
  • Operating with low fluids
Utility Hydraulic 20
  • Hoist/Ramp fail to function
  • Operating with low fluids
Eng. Fuel Pump 30
  • Engine fails to run without boost pumps
  • Use of improper fuel type
Fuel Boost Pump 30
  • Engine fails to start
  • Use of improper fuel type
Battery 50
  • Fails to charge
  • Letting battery drain completely, or near completely
Wiring Harness (AC & DC) 400
  • DC1/DC2/AC1/AC2 Bus Failure
    • Failure of gauges
  • n/a
Carburetor 50
  • Reduced Engine Power
  • TBD
Supercharger 50
  • Reduced Engine Power
  • TBD
Left/Right Mags 40
  • Higher than normal throttle needed for same power
  • Engine cut-out when failed mags selected.
  • n/a
Clutch 40
  • Rotors fail to engage on start-up
  • Leaving clutch pump unnecessarily engaged.
Starter 40
  • Failure of engine to start
  • No sound from starter when active
  • Running starter too long
Main Hub 50
  • Control anomalies in cyclic control
  • n/a
#1 Inverter 30
  • Failure of AC1 bus devices
  • INST PWR warning light illuminated

n/a

#2 Inverter 30
  • Failures of AC2 bus devices. INST PWR warning light illuminates when generator is active and NO 2 INV selected.

5 Inspecting Components

Most components can be inspected by clicking on them. When you click on such a component, a message indicating the general condition of that component will be displayed. The messages reflect both component age and wear. Besides a "damaged" message, the following status messages can be displayed based on the effective percent of lifetime of the component:

Message %Lifetime
The X appears to be in good condition. <50%
The X appears to be serviceable 50%-75%
The X appears to be well used 75%-85%
The X appears to be well worn 85%-95%
The X appears to be on its last legs 95%-100%
The X appears to have seen better days 100%-150%
The X appears to as if it might break by looking at it wrong >150%

6 Maintenance Table

Figure 2: S61 Maintenance Workbench

The S-58/H-34 comes with a maintenance workbench (see Figure 2) that can be used to monitor component times and replace components. Smaller components are laying on or under the table, while larger components are on palates or boxes near the bench. A logbook on the bench shows which aircraft is being worked on, and a laptop shows the time data for all helicopter components. Clicking on a component while the workbench is not connected to a helicopter will bring up a message indicating what it is. For example, clicking on the battery will display the message:

[20:06:59] SA - S58-workbench - v1.0: You inspect the battery.  It appears to be suitable as a replacement part.

It is suggested that you familiarize yourself with all the components on the workbench by clicking on them. Clicking on any location other than a component will bring up the menu with the following options:

Button Description
CONNECT Connect to a helicopter within 20m.
Public( ) Sets the workbench to public use if selected. Otherwise only the owner can use the workbench.

6.1 Connecting to a Helicopter

Pressing CONNNECT from the workbench menu will scan for nearby helicopters and give you a list by tail number. Select the tail number of the helicopter you want to work on. The selected tail number will be shown on the aircraft logbook sitting on the bench as well as on the laptop screen.

6.2 Access Control

Selecting "Public" grants access for anyone to use a workbench, but access to a helicopter is not automatically granted. In order to use a workbench, both the owner of the workbench, and the user of the workbench must have pilot privileges on the helicopter. Pilot privileges means you are either owner of the helicopter, or you have been added to the helicopter as a pilot by name.

6.3 Maintenance Laptop

Figure 3: S58 Maintenance Laptop

Once connected to a helicopter, the maintenance laptop (see Figure 3) will show the current times on all components. The laptop is implemented with prim media, so be sure you have media enabled and click on the laptop screen to see it. The header area at the top will show information about the connected helicopter including its make/mode, tail number, current HOBBS time and serial number. The rows will show the following:

  • Component - The name of the component.
  • Service Time - The lifetime (in hours) of the component when new.
  • Installed Date - The date on which the component was installed.
  • Installed HOBBS - The HOBBS time at which the component was installed.
  • Time Remaining - The time remaining (in hours) before the component should be replaced. A negative value indicates replacement is past due.

Note that the list of items is scrollable. A scrollbar on the right can slide the component list up or down.

6.4 Replacing Components

Before you replace a component, the appropriate access panels must be open. For example, to replace the #2 engine, you must open the panel for the #2 engine. Components are replaced by clicking on the component on the workbench. If only one type of that component is used in the helicopter, a menu asking you to confirm the installation will be posted. Click "Yes" to install the component. If the appropriate access door is not open, you will get a message such as:

[20:27:17] SA - S58-workbench - v1.0: You cannot access that without opening the required access doors.

Otherwise, the component will be replaced, and the component time data updated on the laptop. For component types that are used in multiple places, you will be shown a menu asking where that component should be installed. Select the location to replace the component.

IMPORTANT NOTE: Replacement parts are shipped without fluids. Be sure to add fluids to components that require fulids before first use, or you will be replacing it again very soon.

6.5 Light Bulb Replacements

Most indicator lights in the helicopter can tested by pressing them. Indicator lights are replaced by clicking on the box of bulbs on the workbench. Clicking the box will replace all indicator bulbs in the aircraft.

6.6 Spark Plug Replacements

Each of the 9 cylinders on the engine has two spark plugs, a left and a right. The condition of the plugs in a cylinder can be checked by clicking that cylinder. If a damaged spark plug is detected, it can be replaced by clicking on the box of spark plugs on the workbench. You will be prompted for which spark plug to replace by cylinder number and left or right.

6.7 Online Access to Component Table

The component times can also be viewed online via the Shergood web site. You can access the component times of your aircraft by navigating to your Shergood profile page, selecting the "My Aircraft" tab, clicking on the link for the tail number of your aircraft, then selecting the "Components" tab on the aircraft profile page. You can only view component time information for aircraft you own. Alternatively, you can navigate directly to the aircraft profile page with a link of the form:

https://www.shergoodaviation.com/aircraft-status.php?n=XXXXXX

where XXXXXX is replaced with your tail number. Be sure to log into your web account before using this link. You can only view stats on aircraft that you own.