Airworthiness Directive · Amendment 39-16484 · Landing gear
Fokker Services B.V. Model F.28 Mark 0070 and 0100 Airplanes
This AD applies to Fokker Services B.V. Model F.28 Mark 0070 and 0100 airplanes, certificated in any category, all serial numbers.
We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
Do the following actions.
(1) Within 30 days after the effective date of this AD, do a detailed inspection of the hydraulic lines associated with the PBSOV for contamination in the system (the presence of pieces of material from the poppet seat of an unmodified PBSOV having P/N 70379). If any contamination is found, before further flight, remove the contamination, in accordance with Part 1 of the Accomplishment Instructions of Fokker Service Bulletin SBF100-32-159, dated October 6, 2009.
(2) Within 18 months after the effective date of this AD, re-inspect the hydraulic lines and do all applicable corrective actions as required by paragraph (g)(1) of this AD, and replace the unmodified PBSOV having P/N 70379, with a modified PBSOV having P/N 70379 having the suffix “A” behind the serial number on the identification plate, in accordance with Part 2 of the Accomplishment Instructions of Fokker Service Bulletin SBF100-32-159, dated October 6, 2009.
(3) After accomplishing paragraph (g)(2) of this AD, do not install any unmodified PBSOV having P/N 70379, unless the PBSOV having P/N 70379 has been modified, having the suffix “A” behind the serial number on the identification plate, in accordance with the Accomplishment Instructions of Eaton Service Bulletin 70379-32-01, dated September 15, 2001.
Note 1: This AD differs from the MCAI and/or service information as follows: No differences.
