AD 77-21-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Martin Corporation | 188A | LOCKHEED-CALIFORNIA COMPANY Models 188A and 188C Airplanes |
| aircraft | Lockheed Martin Corporation | 188C | LOCKHEED-CALIFORNIA COMPANY Models 188A and 188C Airplanes |
Unsafe Condition
Jamming of the aileron/rudder balance interconnect mechanism
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Required Actions
Remove the aileron rudder balance interconnect mechanism in accordance with Lockheed Electra Service Bulletin Alert 88/SB-698 or later FAA approved revision.
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Compliance Time
within 100 hours additional time in service after the effective date of this AD
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Affected Aircraft
Lockheed-CALIFORNIA COMPANY Models 188A and 188C airplanes, certificated in all categories
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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