AD 66-27-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 707-100 Long Body | BOEING Models 707 and 720 Series Airplanes |
| aircraft | The Boeing Company | 707-100B Long Body | BOEING Models 707 and 720 Series Airplanes |
| aircraft | The Boeing Company | 707-100B Short Body | BOEING Models 707 and 720 Series Airplanes |
| aircraft | The Boeing Company | 707-200 | BOEING Models 707 and 720 Series Airplanes |
| aircraft | The Boeing Company | 707-300 Series | BOEING Models 707 and 720 Series Airplanes |
| aircraft | The Boeing Company | 707-300B Series | BOEING Models 707 and 720 Series Airplanes |
| aircraft | The Boeing Company | 707-300C Series | BOEING Models 707 and 720 Series Airplanes |
| aircraft | The Boeing Company | 707-400 Series | BOEING Models 707 and 720 Series Airplanes |
| aircraft | The Boeing Company | 720 Series | BOEING Models 707 and 720 Series Airplanes |
| aircraft | The Boeing Company | 720B Series | BOEING Models 707 and 720 Series Airplanes |
Unsafe Condition
Fire in the tail cone due to shorted tail navigation light wires.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect tail navigation light wiring for frayed or deteriorated wires and inspect protective nylon tube to ensure it is secured to bulkhead. Replace frayed or deteriorated wires and secure nylon tube to bulkhead as necessary before further flight. Repeat inspections every 300 hours' time in service until specified modifications are accomplished, not later than 2,250 hours' time in service from the AD's effective date.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 300 hours' time in service after October 12, 1966, and repeat every 300 hours' time in service until modifications are accomplished but not later than 2,250 hours' time in service from the effective date of this AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Boeing Models 707 and 720 Series Airplanes equipped with nylon tube conduit in the tail cone.
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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