Superseded by FAA AD 2026-02-10
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected Boeing 787-8, 787-9, and 787-10 airplanes must perform repetitive general visual inspections under all lavatory washbasins for evidence of leaks at the FCM starting March 7, 2024. If leaks are detected, corrective actions such as FCM replacement and leak testing must be completed. Operators should refer to Boeing Alert Requirements Bulletin B787-81205-SB250290-00 RB, Issue 001, dated November 1, 2022, for detailed procedures and may use accepted alternative cleaning methods without prior approval.
Summary
FAA Airworthiness Directive 2024-01-01 is a final rule addressing certain Boeing Model 787-8, 787-9, and 787-10 airplanes. It mandates repetitive visual inspections under all lavatory washbasins to detect intermittent and active water leaks from the faucet control module (FCM), which could migrate below the passenger floor and into electronic equipment bays. The directive aims to prevent damage to flight-critical equipment caused by these leaks.
What changed
This new airworthiness directive introduces mandatory repetitive general visual inspections of the lavatory areas for water leaks at the FCM and requires corrective actions, including replacement of affected FCMs if leaks are found. The applicability excludes airplanes delivered with a redesigned FCM that is not subject to the unsafe condition. It also clarifies that alternative cleaning procedures may be used without prior approval if accepted by operators.
Why it matters
This directive is critical for aviation professionals because undetected water leaks can damage multiple line replaceable units (LRUs), potentially leading to loss of safe flight and landing capabilities. Operators, maintenance, and compliance teams must monitor and address these leaks proactively to maintain aircraft safety and regulatory compliance. The directive also ensures that inspections cover all lavatories due to the risk of simultaneous leaks at multiple locations.
More for Boeing 787
All 116- EASA AD US-2026-20-10Flight Controls - Leading Edge Outboard Slat Systems - Airplane Flight Manual - AmendmentOct 19, 2026
- EASA AD US-2026-20-01Fuselage - Cargo Liner Joint Sealing Tape - InspectionOct 16, 2026
- EASA AD US-2026-20-02Master Minimum Equipment List - AmendmentOct 8, 2026
- EASA PAD 26-114Engine – High Pressure Turbine Blades – InspectionSep 24, 2026
- EASA AD US-2026-17-02Wings - Lower Outboard Wing Skin - InspectionsSep 7, 2026
Get the next one by email
New ADs and bulletins for Boeing 787, summarized like this page, every Monday.