AD 97-10-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 777-200 Series | Airworthiness Directives; Boeing Model 777 Series Airplanes |
| aircraft | The Boeing Company | 777-300 Series | Airworthiness Directives; Boeing Model 777 Series Airplanes |
Unsafe Condition
Corrosion between the backshell and bundle shield, loose shield retention bands, and loose backshells of the wire bundles of the flight control system due to moisture collection inside the connectors, which could reduce system protection against lightning strikes or HIRF events and result in loss of function of certain flight control surface actuators during a lightning strike.
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Required Actions
Conduct repetitive corrosion/resistance inspections to measure resistance of each flight control system wire bundle. Repair receptacle bonds, backshells, or replace wire bundles if discrepancies are found. Optional terminating action: replace existing connectors with overmolded connectors approved by FAA to prevent moisture ingress.
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Compliance Time
Initial inspection required within 60 days after the AD's effective date (May 21, 1997) for airplanes that have reached or exceeded 12 months since first production test flight. For those not yet at 12 months, initial inspection due when that threshold is reached.
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Affected Aircraft
Boeing Model 777-200 Series and 777-300 Series airplanes, all serial numbers.
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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