AD 75-20-09
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
Wing vibrations caused by loose blind rivets in the outboard aileron tab mast fittings.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect all outboard aileron tab mast fittings within 200 flight hours from April 21, 1975, unless AD 75-08-10 was done. Report findings within 15 days. Inspect attaching blind rivets within 2500 flight hours or 325 days from November 5, 1975, whichever comes first. Replace rivets with bolts and nutplates before July 1, 1977.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 200 flight hours from April 21, 1975; within the next 2500 flight hours or 325 days from November 5, 1975, whichever occurs first; prior to July 1, 1977.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Boeing Model 727 series airplanes listed in Boeing Service Bulletin No. 727-57-137, Revision 2, or later FAA approved revisions.
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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