AD 47-10-17
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Aircraft Corporation | 49-46 | LOCKHEED Model 49 |
Unsafe Condition
Failure of the cabin supercharger drive shafts or cabin supercharger due to inadequate design or maintenance, leading to loss of cabin pressurization or supercharger failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace cabin supercharger drive shafts per SB 49/SB-107, replace cabin supercharger per SB 49/SB-141, and install supercharger oil temperature indicator per SB 49/SB-156. Check compliance with later revisions within 150 hours of operation.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
prior to resumption of cabin supercharger operation
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Lockheed Aircraft Corporation Model 49 serial numbers up to and including 2075
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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