AD 97-14-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 747-100 Series | Airworthiness Directives; Boeing Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-100B Series | Airworthiness Directives; Boeing Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-100B SUD Series | Airworthiness Directives; Boeing Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-200B Series | Airworthiness Directives; Boeing Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-200C Series | Airworthiness Directives; Boeing Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-200F Series | Airworthiness Directives; Boeing Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-300 Series | Airworthiness Directives; Boeing Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-400 Series | Airworthiness Directives; Boeing Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-400D Series | Airworthiness Directives; Boeing Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-400F Series | Airworthiness Directives; Boeing Model 747 Series Airplanes |
Unsafe Condition
Fracturing of bulkhead style fuse pins located in the inboard strut at the forward end of the upper link due to fatigue, which could result in failure of the strut and separation of an engine from the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect for corrosion or cracks of certain fuse pins on the upper link of the inboard and outboard struts, replace if necessary. Reduce compliance times for actions associated with certain bulkhead fuse pins. Optional terminating action includes installing 15-5 corrosion resistant steel (third generation) fuse pins or accomplishing strut/wing modifications to eliminate need for further inspections or replacements.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Required as indicated, unless accomplished previously.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Boeing Model 747 and 747-400 series airplanes, line numbers 1 through 967 inclusive, and 969 through 992 inclusive; excluding airplanes with Pratt & Whitney PW4000 or GE CF6-80C2 series engines, and those with strut/wing modifications per specified ADs.
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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