AD 64-07-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 707-100 Long Body | BOEING Models 707 and 720 Series Aircraft |
| aircraft | The Boeing Company | 707-100B Long Body | BOEING Models 707 and 720 Series Aircraft |
| aircraft | The Boeing Company | 707-100B Short Body | BOEING Models 707 and 720 Series Aircraft |
| aircraft | The Boeing Company | 707-200 | BOEING Models 707 and 720 Series Aircraft |
| aircraft | The Boeing Company | 707-300 Series | BOEING Models 707 and 720 Series Aircraft |
| aircraft | The Boeing Company | 707-300B Series | BOEING Models 707 and 720 Series Aircraft |
| aircraft | The Boeing Company | 707-300C Series | BOEING Models 707 and 720 Series Aircraft |
| aircraft | The Boeing Company | 707-400 Series | BOEING Models 707 and 720 Series Aircraft |
| aircraft | The Boeing Company | 720 Series | BOEING Models 707 and 720 Series Aircraft |
| aircraft | The Boeing Company | 720B Series | BOEING Models 707 and 720 Series Aircraft |
Unsafe Condition
Possible inflight electrical fire in the J6 electrical distribution panel due to heat generated by a loose terminal on a generator contactor.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove nylon terminal covers from specified circuit breakers and external power contactor; replace vinyl covered braid connections with No. 4 gauge high temperature wire jumpers (MIL-W-7139A, Type I, Class A or equivalent); replace capacitors with specified types; reroute wiring to auxiliary negative sequence relays separately; accomplish modifications per Boeing Service Bulletin No. 1720 or FAA-approved method.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 1,000 hours' time in service after the effective date of this AD
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Affected Aircraft
Boeing Models 707 and 720 Series Aircraft
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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