AD 2005-20-06 Airworthiness Directives; Aviointeriors S.p.A. (formerly ALVEN), Series 312 Box Mounted Seats

Models named: F27 Mark 050, Mark 500, Mark 600. Read the applicability below — it usually turns on serial or part numbers too.

This AD applies to Aviointeriors S.p.A. (formerly ALVEN), series 312 box mounted seats, part number (P/N) 312( )( )27-( )( )( )( )( ) and P/N 312( )( )36-( )( )( )( )( ). These seats are installed in, but not limited to, Fokker Model F27 Mark 050, Mark 500, and Mark 600 airplanes. (d) The parentheses appearing in the seat P/N indicate the presence or absence of an additional letter(s), or number(s), that varies the basic seat configuration. This AD still applies regardless of whether these letters, or numbers, are present or absent in the seat P/N designation.

You are responsible for having the actions required by this AD performed within the compliance times specified unless the actions have already been done. Attachments That Have Already Accumulated 8,000 Hours Time-In-Service (TIS) or More (g) For attachments that have already accumulated 8,000 hours TIS or more on the effective date of this AD, do the following: (1) Within 90 days after the effective date of this AD, replace attachments with new attachments of the same P/N, using Section 2., Replacement Procedure, Steps 2.4 though 2.6 of Aviointeriors Service Bulletin No. 312/912-05, Revision 1, dated August 24, 2001. (2) Perform repetitive visual inspections as specified in paragraph (i) of this AD. Initial Visual Inspection (h) Perform an initial visual inspection of the seat outboard and inboard attachments for cracks, within 90 days after the effective date of this AD, as follows: (1) Inspect seat outboard attachment, part number (P/N) DM03313-1, and seat inboard attachment, P/N DM03314-1, using Section 2., Inspection Procedure, Steps 2.1 through 2.5 of Aviointeriors Service Bulletin (SB) No. 312/912-05, Revision 1, dated August 24, 2001. (2) Replace any cracked attachment with a new attachment of the same P/N, using Section 2., Replacement Procedure, Steps 2.4 though 2.6 of Aviointeriors SB No. 312/912-05, Revision 1, dated August 24, 2001. (3) Replace attachments when they have accumulated 8,000 hours time-in-service (TIS), with new attachments of the same P/N, using Section 2., Replacement Procedure, Steps 2.4 though 2.6 of Aviointeriors SB No. 312/912-05, Revision 1, dated August 24, 2001. Repetitive Visual Inspections (i) Within 650 hours TIS after the last inspection, or within 650 hours TIS after attachment was replaced, and whenever the seat is being installed or removed, perform repetitive visual inspections for cracks, and replace cracked seat outboard and inboard attachments. Use paragraphs (h)(1) through (h)(3) of this AD to inspect and disposition the attachments. Alternative Methods of

This AD results from 10 reports of cracked attachments of series 312 box mounted seats. We are issuing this AD to prevent series 312 box mounted seats from detaching from the passenger compartment floor, which could result in injury to the occupant of the seat, and prevent evacuation of passengers in the event of an emergency.