US Airways

To Whom It May Concern: P/N 1001447-6 is installed on all US Airways E190 aircraft and was installed per AMOC ANM-116-11-023 (Global AMOC allowing MPN 1001447-6 Low Stage Check Valve). Therefore the NPRM is not applicable to US Airways fleet, since we do not 1001447-3/-4 valves installed. US Airways would still like to comment on AD NPRM 2011-NM-107-AD even though by having P/N 1001447-6 installed we are not in the AD effectivity. Our concern with this NPRM is called out in paragraph (I): Paragraph (l) “For Model ERJ 190–100 STD, –100 LR, –100 ECJ, and –100 IGW airplanes; and Model ERJ 190–200 STD, –200 LR, and –200 IGW airplanes: Except as provided by paragraph (m) of this AD, within 10 months after the effective date of this AD, install a new LPCV having P/N 1001447–6,using a method approved by either the Manager, International Branch, ANM–116, Transport Airplane Directorate, FAA; or Ageˆncia Nacional de Aviac¸a˜o Civil (ANAC) (or its delegated agent).” The current statement in Paragraph (l) “using a method approved” needs to be further clarified so operators can understand what is acceptable and unacceptable method of installation. The approved method such as an Embraer AMM or SB needs to be stated to avoid an AMOC allowing use of these documents. Regards, Eric Daymont US Airways