Airworthiness Directive · Amendment 39-19252 · Equipment/furnishings
Fokker Services B.V. Airplanes
This AD applies to Fokker Services B.V. Model F28 Mark 0100 airplanes, certificated in any category, serial numbers 11244 through 11527 inclusive, except those airplanes modified in service as specified in Fokker Service Bulletin SBF100-25-070, or Fokker Service Bulletin SBF100-25-109, or Fokker Modification Report FS-N545 or FS-N571.
We are superseding Airworthiness Directive (AD) 2005-12-16, which applied to all Fokker Services B.V. Model F28 Mark 0100 airplanes. AD 2005-12-16 required an inspection to determine the part number of the passenger service unit (PSU) panels for the PSU modification status, and corrective actions if applicable. This new AD requires an inspection of the PSU panels and the PSU panel/airplane interface connectors for discrepancies, and corrective actions if necessary. This AD also removes airplanes from the applicability. This AD was prompted by reports of smoke in the passenger compartment during ground operations and in-flight, and a determination that the modification actions required by AD 2005-12-16 might not have been implemented correctly. We are issuing this AD to address the unsafe condition on these products.
This paragraph restates the requirements of paragraph (f) of AD 2005-12-16, with clarified note. Within 36 months after July 20, 2005 (the effective date of AD 2005-12-16), inspect to determine if Grimes Aerospace PSU panels having part number (P/N) 10-1178-() or P/N 10-1571-() are installed and the PSU modification status if applicable, and do any corrective actions if applicable, by doing all of the actions specified in the Accomplishment Instructions of Fokker Service Bulletin SBF100-25-097, dated December 30, 2003.
Note 1 to paragraph (g) of this AD: Guidance on modifying the PSU panel can be found in Fokker Service Bulletin SBF100-25-097, dated December 30, 2003, which refers to Grimes Aerospace Service Bulletin 10-1178-33-0040, Revision 1, dated March 25, 1996 (for PSU panels having P/N 10-1178-()); and Grimes Aerospace Service Bulletin 10-1571-33-0041, dated October 15, 1993 (for PSU panels having P/N 10-1571-()).
This paragraph restates the requirements of paragraph (g) of AD 2005-12-16, with no changes. As of July 20, 2005 (the effective date of AD 2005-12-16), no person may install a PSU panel having P/N 10-1178-() or P/N 10-1571-() on any airplane, unless it has been inspected and any applicable corrective actions have been done in accordance with paragraph (g) of this AD.
For the purpose of this AD, Grimes (Honeywell) PSUs having P/N 10-1178-() with a serial number below 4000, and PSUs having P/N 10-1571-() with a serial number below 1000, are referred to as affected PSUs in paragraphs (j) through (l) of this AD.
Within 24 months after the effective date of this AD: Do the actions required by paragraphs (j)(1) and (j)(2) of this AD.
(1) Do a general visual inspection of the panel of each affected PSU for incorrect application of the sealant, in accordance with the Accomplishment Instructions of Fokker Service Bulletin SBF100-25-097, dated December 30, 2003; and, as applicable, Grimes Aerospace Service Bulletin 10-1178-33-0040, dated October 15, 1993 (for PSUs having P/N 10-1178-()); Grimes Aerospace Service Bulletin 10-1178-33-0040, Revision 1, dated March 25, 1996 (for PSUs having P/N 10-1178-()); or Grimes Aerospace Service Bulletin 10-1571-33-0041, dated October 15, 1993 (for PSUs having P/N 10-1571-()).
(2) Do a general visual inspection of the electrical connectors of each affected PSU panel for discrepancies; i.e., uninstalled gaskets, inability to properly lock the connectors, and incorrectly applied sealant on the connectors; in accordance with the Accomplishment Instructions of Fokker Service Bulletin SBF100-25-128, dated July 21, 2016.
If, during any inspection required by paragraph (j) of this AD, any discrepancy is found, before further flight, restore the sealing of the affected PSU panels and accomplish all applicable corrective actions to correct the PSU panel interface, in accordance with the Accomplishment Instructions of Fokker Service Bulletin SBF100-25-128, dated July 21, 2016. Do all applicable corrective actions before further flight.
As of the effective date of this AD, an affected PSU panel may be installed on any airplane, provided that before further flight after installation, it has been inspected in accordance with paragraph (j) of this AD and all applicable corrective actions have been done in accordance with paragraph (k) of this AD.
