Airworthiness Directive · Amendment 39-21984 · Air conditioning
The Boeing Company Airplanes
This AD applies to all The Boeing Company Model 767-2C series airplanes, certificated in any category.
The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 767-2C series airplanes. This AD was prompted by a report of multiple nuisance caution "RECIRC SMOKE" engine indication and crew alerting system (EICAS) messages that may occur when water accumulates in the alternative ventilation system (AVS) duct. This AD requires replacing the alternative ventilation duct having a certain part number with a new part number, and for certain airplanes, changing the insulation blanket to install the drain hose. This AD also prohibits the installation of an alternative ventilation duct, part number (P/N) 216T2101-704, on any airplane. The FAA is issuing this AD to address the unsafe condition on these products.
Within 36 months after the effective date of this AD: Replace the alternative ventilation duct having part number (P/N) 216T2101-704 with P/N 216T2101-707; and change the insulation blanket to install the drain hose, as applicable; in accordance with a method approved by the Manager, Seattle ACO Branch, FAA.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
