AD 62-13-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Andrea Radio Corporation | Intercommunication Sets | Airworthiness Directives; Andrea Radio Corporation: Applies to All Aircraft Equipped With Intercommunication Sets Models AN/AIC-10A and AN/AIC-18(A-81) |
Unsafe Condition
The adjustable attenuation range exceeding 10 decibels in Intercommunication Sets Models AN/AIC-10A and AN/AIC-18(A-81) could cause range problems when the master level control is not set to full 'ON'.
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Required Actions
Modify Model AN/AIC-18(A-81) per Field Modification C41-5115 and Model AN/AIC-10A per C41-5116 to limit attenuation to 10 decibels. Install a placard requiring the master level control on the isolation amplifier be full 'ON' during range problem work. Add 'MOD' marking near the TSO-C50 label after modification.
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Compliance Time
Within the next 200 hours' time in service after June 1, 1962 for modifications and within 10 hours' time in service for the interim placard installation.
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Affected Aircraft
All aircraft equipped with Intercommunication Sets Models AN/AIC-10A and AN/AIC-18(A-81), except those with Control Panel Serial Number 332 and subsequent.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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