AD 47-10-29
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Aircraft Corporation | 49-46 | LOCKHEED Model 49 |
Unsafe Condition
The absence of drain holes in the lower aileron surface could allow water accumulation, leading to aileron malfunction or structural damage.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install 17 drain holes between aileron Stations 69.5 and 99.7 in the lower aileron surface outboard of each rib and forward of each stringer.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
prior to April 1, 1947
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Affected Aircraft
Lockheed Aircraft Corporation Model 49 serial numbers prior to 2080 with metal ailerons installed.
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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