AD 73-13-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Twin Commander Aircraft LLC | 690 | Airworthiness Directives; Rockwell International Model 690 Airplanes |
Unsafe Condition
Failure of oil supply lines in the event of an engine fire
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove existing oil supply hose assembly and install tube assembly (P/N 610488-111), check valve (P/N 816T-6TT (.014)-12), hose assembly (P/N 610488-113), and attaching parts as listed in Rockwell International Service Bulletin 123, dated April 5, 1973, or equivalent parts and methods approved by the Chief, Engineering and Manufacturing Branch, Southwest Region, Federal Aviation Administration, Fort Worth, Texas.
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Compliance Time
within the next 50 hours time in service after the effective date of this AD
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Affected Aircraft
Rockwell International Model 690 airplanes, Serial Numbers 11001 through 11063
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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