AD 65-14-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Martin Corporation | 1329-23A | LOCKHEED Model 1329 Aircraft |
| aircraft | Lockheed Martin Corporation | 1329-23D | LOCKHEED Model 1329 Aircraft |
Unsafe Condition
Improper engine fire and overheat warning indications due to incorrect connections in the engine fire (forward) and overheat (aft) detector electrical systems.
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Required Actions
Inspect engine fire and overheat detector electrical systems to ensure proper connections to the correct fire warning control unit. Use a Simpson 260 meter or equivalent to check resistance and apply heat with a heater blower to verify decreasing resistance readings. Correct discrepancies using Lockheed Drawing No. JR156 if results are unsatisfactory.
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Compliance Time
within the next 25 hours' time in service after the effective date of this AD unless already accomplished
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Affected Aircraft
Lockheed Model 1329 Aircraft, serial numbers 5001 through 5057
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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