Microphone Boom Support Assembly, Microphone Boom, Microphone Cable, and Microphone

Communication Cord

Earphone Speakers, Ear Cups, Ear Cup Retainer Receiver, and Ear Seals

A. Microphone Boom Support Assembly

1. Visual Inspection

Inspect for cracks, bends, or deformities in the boom support structure.
Check for signs of excessive wear, corrosion, or loose fittings.

2. Attachment to Helmet

Verify that the boom support assembly is firmly attached to the helmet.
Ensure all mounting points, screws, and fasteners are secure and not stripped.

3. Mobility & Adjustability

Move the boom support through its range of motion to confirm smooth operation.
Ensure there is no excessive stiffness or looseness that could cause instability.
Confirm that the boom support holds its position when adjusted.

B. Microphone Boom

1. Structural Integrity

Inspect for cracks, bends, or misalignment.
Check for any damage to the outer casing that could affect stability.

2. Movement & Positioning

Note: Be sure to always loosen the boom support assembly prior to adjusting the boom’s position.
Adjust the microphone boom to confirm ease of movement.
Ensure the boom remains in position without sagging or shifting unexpectedly.

3. Attachment to Support Assembly

Verify that the microphone boom is securely connected to the support assembly.
Check for any loose screws, bolts, or other fasteners that may need tightening.

C. Microphone Cable (if applicable)

1. Cable Integrity

Visually inspect for cuts, frays, exposed wires, or other signs of wear.
Check for any signs of pinching or excessive bending that could affect signal transmission.

2. Connection Points

Ensure all connectors are securely attached to the helmet system.
Confirm there is no corrosion or dirt affecting connection points.
Lightly tug on connectors to ensure they are firmly seated.

3. Cable Routing

Verify that the cable is properly routed without excessive slack or tension.
Ensure the cable does not interfere with other helmet components or obstruct visibility.
Confirm that cable clips or fasteners (if applicable) are holding the cable in place.

D. Microphone

1. Physical Condition

Inspect the microphone casing for cracks, damage, or missing components.
Check the windscreen (if present) for wear, dirt buildup, or looseness.

2. Position & Adjustment

Adjust the microphone position to ensure it holds securely.
Confirm that it can be placed in an optimal position near the mouth for clear audio.

3. Functionality Check

Conduct an audio check by speaking into the microphone while monitoring output.
Ensure audio is clear, with no static, dropouts, or distortion.
Verify that the push-to-talk (PTT) button (if applicable) engages and transmits properly.
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Pass/Fail Criteria

PASS: Microphone is operational without errors.
FAIL: If any cuts, frayed wires, loose connections, or audio issues are found— DO NOT USE until repaired or replaced.

Refer to Maintenance Status Traffic Light Checklist to determine Serviceable condonation or if faults are Unserviceable, not recommended to fly with helmet until faults are resolved.