AD 71-09-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 727-100 Series | BOEING Model 727 Airplanes |
| aircraft | The Boeing Company | 727-100C Series | BOEING Model 727 Airplanes |
| aircraft | The Boeing Company | 727-200 Series | BOEING Model 727 Airplanes |
| aircraft | The Boeing Company | 727-200F Series | BOEING Model 727 Airplanes |
| aircraft | The Boeing Company | 727 Series | BOEING Model 727 Airplanes |
| aircraft | The Boeing Company | 727C Series | BOEING Model 727 Airplanes |
Unsafe Condition
Cracking of the main landing gear actuator beam (P/N 65-17658-11) could result in failure of the actuator beam, leading to possible collapse of the main landing gear.
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Required Actions
Visually inspect or ultrasonically inspect the main landing gear actuator beam for cracks in accordance with Boeing Service Bulletin 32-188 or an approved method. Repeat inspections at intervals not exceeding 600 flight hours (visual) or 1500 flight hours (ultrasonic). Replace the beam if cracks are found.
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Compliance Time
Within the next 300 hours' time in service after the effective date (May 28, 1971) or prior to the accumulation of 5300 hours' time in service, whichever occurs later.
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Affected Aircraft
Boeing Model 727 airplanes listed in Boeing Service Bulletin 32-188 (727-100, 727-100C, 727-200, 727-200F, 727 Series, 727C Series)
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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