AD 65-13-05
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
Loss of elevator inboard counterweights due to insufficient engagement or inadequate shank length of attach bolts P/N AN 174H10A.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove and inspect elevator counterweight attach bolts, replace bolts with AN 174H10A if shank length is less than 1.016 inch or engagement is less than four turns. Safety wire bolts in pairs, reassemble, and torque to 70-100 inch-pounds. At next 100-hour inspection, replace forward outboard bolts with less than eight turn engagement.
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Compliance Time
before further flight except that one flight may be made in accordance with the provisions of FAR 21.197 for the purpose of obtaining inspection and rework
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Affected Aircraft
Lockheed Model 1329-23A and 1329-23D aircraft, serial numbers 5001 through 5058
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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