FAA tightens Boeing 787 water-system inspection rules
AI-generated summary for informational purposes only. Not legal advice. See the original source for the authoritative text.
This rule requires operators of certain Boeing 787-8, 787-9, and 787-10 airplanes to inspect clamshell couplings in lavatory and galley potable water systems for missing or wrongly installed safety straps, and to fix any problems found. It also keeps the earlier inspection requirements in place for some airplanes and bars reinstalling certain affected parts once they have been replaced with approved versions. For airlines and maintenance teams, the practical effect is more inspection work, parts control, and documentation. The FAA says the goal is to stop leaks and water migration to critical electronic equipment, which could affect safe flight and landing.
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Key Changes
- Adds a new inspection for clamshell couplings on certain Boeing 787-8, 787-9, and 787-10 airplanes to check that safety straps are present and installed correctly.
- Keeps the earlier clamshell coupling inspection requirements from AD 2023-08-04 in place for affected airplanes.
- Bans reinstalling certain affected coupling part numbers at locations where they were already replaced with approved replacement parts.
Obligations
What this law requires
Operators of Boeing Model 787-8, 787-9, and 787-10 airplanes must comply with the AD by performing the required retained clamshell coupling inspections within the compliance times specified in the referenced service bulletin and AD, unless already accomplished.
For affected airplanes, operators must perform a detailed inspection of all clamshell couplings at door 1 and door 3 lavatories and galleys with a potable water system to verify the presence and correct installation of safety straps.
If a clamshell coupling safety strap is missing or incorrectly installed, operators must accomplish the applicable on-condition corrective actions, including correcting the installation or replacing the clamshell coupling as required.
When required by the inspection results, operators must replace any clamshell coupling that does not have a safety strap with a new clamshell coupling that has a safety strap and must perform a water leak test.
Operators must comply with the retained requirements of AD 2023-08-04 for clamshell coupling inspections and related actions, except where terminated by the new inspection and corrective actions in this AD.