AD 48-05-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC3-G102 | Airworthiness Directives; DOUGLAS DC3 Aircraft |
| aircraft | The Boeing Company | DC3-G102A | Airworthiness Directives; DOUGLAS DC3 Aircraft |
| aircraft | The Boeing Company | DC3-G103A | Airworthiness Directives; DOUGLAS DC3 Aircraft |
| aircraft | The Boeing Company | DC3-G202A | Airworthiness Directives; DOUGLAS DC3 Aircraft |
| aircraft | The Boeing Company | DC3A-S1C3G | Airworthiness Directives; DOUGLAS DC3 Aircraft |
| aircraft | The Boeing Company | DC3A-S1CG | Airworthiness Directives; DOUGLAS DC3 Aircraft |
| aircraft | The Boeing Company | DC3A-S4C4G | Airworthiness Directives; DOUGLAS DC3 Aircraft |
| aircraft | The Boeing Company | DC3A-SC3G | Airworthiness Directives; DOUGLAS DC3 Aircraft |
| aircraft | The Boeing Company | DC3A-SCG | Airworthiness Directives; DOUGLAS DC3 Aircraft |
| aircraft | The Boeing Company | DC3C-R-1830-90C | Airworthiness Directives; DOUGLAS DC3 Aircraft |
Unsafe Condition
Leakage in the oil shutoff valves due to 'O' rings not capable of withstanding operating temperatures.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the present 'O' rings in the oil shutoff valves with H222-90 high temperature material or AMS-3228B material.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
at first engine change after March 1, 1948, but not later than May 1, 1948
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Douglas DC3 Aircraft equipped with Pacific Aviation Oil Shutoff Valves.
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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