AD 94-05-07
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 | 747SP Series | Airworthiness Directives; Boeing Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747SR Series | Airworthiness Directives; Boeing Model 747 Series Airplanes |
Unsafe Condition
Damage due to chafing of wire bundles above the P6 panel around station 400, water line 385, right buttock line 25, specifically bundles W418, W718, W998, W1100, and W1362, leading to potential smoke and fire in the cockpit and loss of essential cockpit instruments necessary for continued safe flight and landing.
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Required Actions
Perform a visual inspection to detect chafing damage on specified wire bundles, repair or replace damaged wires, measure clearance between wire bundles, and install modifications per Boeing Alert Service Bulletin 747-24A2186 or Revision 1. Repeat inspections every 120 days if clearance is less than 0.25 inch until terminating actions are completed.
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Compliance Time
Within 15 days after January 8, 1993 for initial inspection under paragraph (a), and within the next 4,000 flight hours after the effective date of this AD (April 4, 1994) for requirements under paragraph (b).
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Affected Aircraft
Boeing Model 747 series airplanes excluding Model 747-400 series, 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
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