graph TD
identify-target-flex["<small><b>Step 1</b></small><br/>Action: Identify the target flex to inspect b..."]
inspect-flex-harness{"<small><b>Step 2</b></small><br/>Question: Using a borescope, look along the ent..."}
replace-damaged-flex["<small><b>Step 3</b></small><br/>Action: Remove the flex harness from the Airc..."]
is-velcro-secured{"<small><b>Step 4</b></small><br/>Question: Is the velcro secured?"}
is-loose-velcro-flex-damaged{"<small><b>Step 5</b></small><br/>Question: Visually inspect the flex. Has it bee..."}
replace-and-reattach-velcro["<small><b>Step 6</b></small><br/>Action: Replace the flex and reattach the vel..."]
reattach-velcro["<small><b>Step 7</b></small><br/>Action: Reattach the velcro."]
inspect-mating-connectors{"<small><b>Step 8</b></small><br/>Question: Inspect flex mating connectors. If th..."}
escalate-damage-or-corrosion{{"<small><b>Step 9</b></small><br/>Escalation: Escalate to P2 Avionics Hardware On C..."}}
escalate-no-off-nominal{{"<small><b>Step 10</b></small><br/>Escalation: If there are no signs of anything off..."}}
identify-target-flex --> inspect-flex-harness
inspect-flex-harness -->|Yes - signs of damage| replace-damaged-flex
inspect-flex-harness -->|No| is-velcro-secured
replace-damaged-flex --> is-velcro-secured
is-velcro-secured -->|Yes| inspect-mating-connectors
is-velcro-secured -->|No| is-loose-velcro-flex-damaged
is-loose-velcro-flex-damaged -->|Yes| replace-and-reattach-velcro
is-loose-velcro-flex-damaged -->|No| reattach-velcro
replace-and-reattach-velcro --> inspect-mating-connectors
reattach-velcro --> inspect-mating-connectors
inspect-mating-connectors -->|Yes| escalate-damage-or-corrosion
inspect-mating-connectors -->|No| escalate-no-off-nominal
style identify-target-flex fill:#dcfce7,stroke:#22c55e,color:#14532d
style inspect-flex-harness fill:#dbeafe,stroke:#3b82f6,color:#1e3a5f
style replace-damaged-flex fill:#dcfce7,stroke:#22c55e,color:#14532d
style is-velcro-secured fill:#dbeafe,stroke:#3b82f6,color:#1e3a5f
style is-loose-velcro-flex-damaged fill:#dbeafe,stroke:#3b82f6,color:#1e3a5f
style replace-and-reattach-velcro fill:#dcfce7,stroke:#22c55e,color:#14532d
style reattach-velcro fill:#dcfce7,stroke:#22c55e,color:#14532d
style inspect-mating-connectors fill:#dbeafe,stroke:#3b82f6,color:#1e3a5f
style escalate-damage-or-corrosion fill:#fef3c7,stroke:#f59e0b,color:#78350f
style escalate-no-off-nominal fill:#fef3c7,stroke:#f59e0b,color:#78350f
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Troubleshooting Flow
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1action
Identify the target flex to inspect based on the corresponding faulting motor.
2question
Using a borescope, look along the entire length of the flex harness. See additional context and guidance on flex handling.
Are there any signs of harness contact with the primary structure, busbars, servos, M5 connectors, or any signs of abrasion on the flex harness?
Example issues
Abrasions - visible wear or cut-through of the flex sleeve
Flex abrasionFlex abrasion from duralock
Primary structure contact - flex rubbing against wing or frame
Flex contacting primary structure
Flex connector corrosion - discoloration or green residue on contacts
Corrosion on connector pinsFlex not fully encapsulated
3action
Remove the flex harness from the Aircraft, document the damage on the ticket, install a new flex harness, then continue the inspection.
4question
Is the velcro secured?
5question
Visually inspect the flex. Has it been damaged?
6action
Replace the flex and reattach the velcro.
7action
Reattach the velcro.
8question
Inspect flex mating connectors. If the flex connects to a hover motor, check the other mating end first before removing motor potting. Are there any signs of damage or corrosion?
If there are no signs of anything off-nominal, escalate to P2 Avionics Hardware On Call with the relevant completed steps and documentation.
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