AD 94-06-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 707-300 Series | Airworthiness Directives; Boeing Model 707 Series Airplanes |
| aircraft | The Boeing Company | 707-300B Series | Airworthiness Directives; Boeing Model 707 Series Airplanes |
| aircraft | The Boeing Company | 707-300C Series | Airworthiness Directives; Boeing Model 707 Series Airplanes |
| aircraft | The Boeing Company | 707-400 Series | Airworthiness Directives; Boeing Model 707 Series Airplanes |
Unsafe Condition
Reduced structural integrity of the wing due to potential failure of the wing front spar lower chord.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Accomplish the structural modification specified in Appendix A., Section A.3., of Boeing Document D6-54996 (referencing Service Bulletin 3475) to modify the wing front spar lower chord at wing station 529.5.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Prior to the accumulation of 20,000 total flight cycles or within the next 4 years after the effective date of this AD, whichever occurs later.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Boeing Model 707-300 Series, 707-300B Series, 707-300C Series, and 707-400 Series airplanes certificated in any category.
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
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.