AD 67-03-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Martin Corporation | 188A | LOCKHEED Models 188A and 188C Series Airplanes |
| aircraft | Lockheed Martin Corporation | 188C | LOCKHEED Models 188A and 188C Series Airplanes |
Unsafe Condition
Cracking in the radius of the junction of the piston head and piston rod of part number 1662-3 in the main landing gear door actuating cylinders.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect visually the MLG door actuating cylinders for hydraulic fluid leakage through the air vent filters. If leakage is noted, replace a cracked P/N 1662-3 piston with P/N 2007-3, or shot peen uncracked P/N 1662-3 pistons with more than 2,050 landings before further flight. Discontinue requirements when P/N 1662-3 is replaced by P/N 2007-3.
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Compliance Time
Within the next 50 landings after the effective date of this AD, and thereafter at intervals not to exceed 100 landings until 700 landings after the effective date. After 700 landings, comply within the next 1,400 landings from the last inspection.
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Affected Aircraft
Lockheed Models 188A and 188C Series Airplanes except those with P/N 2007-3 pistons in main landing gear door actuating cylinders.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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