FAA Mandates Boeing 777 Connector Checks to Boost Airplane Safety
Published Date: 11/28/2025
Rule
Summary
If you own or operate Boeing 777 airplanes, listen up! The FAA found more connectors that need fixing to keep flights safe, so they’re updating the rules. Starting January 2, 2026, you’ll need to check, test, or replace certain parts and stop using any faulty ones—this helps prevent problems and keeps everyone flying worry-free.
Analyzed Economic Effects
5 provisions identified: 0 benefits, 4 costs, 1 mixed.
Applies to Boeing 777 Operators
Starting January 2, 2026, this rule applies to all Boeing Model 777-200, -200LR, -300, -300ER, and 777F series airplanes. The AD supersedes AD 2022-15-06 and is intended to address an unsafe condition involving certain transorb modules and connectors.
Inspect and Replace/Test Transorb Modules
For airplanes certificated on or before the AD effective date, inspect (or review records) within 24 months to determine if transorb modules part numbers CLPT-12SP-06, CLPT-12SP-07, or CLPT-12SP-67 are installed. If any of those part numbers are found, you must replace or test the affected transorb modules and do applicable on-condition actions in accordance with Boeing Alert Requirements Bulletin 777-27A0125 RB, dated February 3, 2023.
FAA Cost Estimates for U.S. Fleet
The FAA estimates this AD affects 312 U.S.-registered airplanes. Estimated costs: $255 per airplane to disconnect/cap/stow (retained action), $255 per airplane for the additional disconnect action, and up to $3,923 per airplane (up to $255 labor plus up to $3,668 parts) to determine, test, or replace affected transorb modules; the FAA totals the latter at up to $1,223,976 across U.S. operators.
Disconnect, Cap, and Stow Connectors
For airplanes certificated on or before the AD effective date, you must disconnect, cap, and stow wires on specified transorb-module connectors: W7314/D02006P and W7579/D02005P per paragraph (g), and W6313/D02098P or W7314/D02099P per paragraph (h). The disconnect actions must be done at the later of before 75,000 total flight hours or 23,000 total flight cycles, or within 3 months after the applicable effective dates listed in the AD.
Replacement Terminates Earlier Actions
If you do the replacement required by the Boeing Alert Requirements Bulletin 777-27A0125 RB (dated February 3, 2023), that replacement terminates the AD requirements to disconnect/cap/stow the connectors specified in paragraphs (g) and (h).
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