AD 70-26-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 727-100 Series | BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727-100C Series | BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727-200 Series | BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727-200F Series | BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727 Series | BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727C Series | BOEING Model 727 Series Airplanes |
Unsafe Condition
Cracks in the main landing gear trunnion support beam, part number 65-16230, due to fatigue.
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Required Actions
Inspect the main landing gear trunnion support beam (P/N 65-16230) in accordance with Boeing Service Bulletin 57-115 or equivalent. If cracks are found, before further flight, rework per SB 57-120, repair with FAA approval, or replace the beam. Repeat inspections as specified after rework or repair.
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Compliance Time
Within 300 landings after October 8, 1971 (if not previously inspected), or within 2000 landings since the initial inspection (if previously inspected), and thereafter every 2000 landings.
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Affected Aircraft
Boeing Model 727 Series airplanes (727-100, 727-100C, 727-200, 727-200F) with main landing gear trunnion support beam part number 65-16230.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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