AD 2026-01-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
RAT forward fittings that were possibly manufactured with the incorrect titanium alloy material, which could result in loss of backup hydraulic and/or electrical power as well as the RAT module departing from the airplane.
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Required Actions
An HFEC or handheld XRF spectrometer inspection of the RAT forward fitting to determine the titanium alloy material and applicable on-condition actions, including an open hole HFEC for cracking of all fastener hole locations common to titanium parts of the interfacing structure of each affected RAT forward fitting, replacing any RAT forward fitting that was not manufactured with the correct titanium alloy material, and repair.
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Compliance Time
Before further flight
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Affected Aircraft
The Boeing Company Model 787-9 and 787-10 airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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