AD 52-04-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Martin-Marietta Corporation | 202 | MARTIN Models 202 and 202A Aircraft |
| aircraft | Martin-Marietta Corporation | 202A | MARTIN Models 202 and 202A Aircraft |
Unsafe Condition
The cabin heater lights and switch are not located in the cockpit, which could lead to inadequate monitoring and potential heater system failures.
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Required Actions
Relocate the cabin heater fuel failure light, low heat warning light, and MANUAL-OFF-AUTO switch to the cockpit. Use G. L. Martin Service Bulletin 110 and Trans World Airlines Engineering Orders Nos. 5422 and 5820 for compliance.
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Compliance Time
not later than May 1, 1952
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Affected Aircraft
Martin-Marietta Corporation Models 202 and 202A Aircraft, all serial numbers
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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