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DEPARTMENT OF TRANSPORT AnON

Federal Aviation Administration

14CFR Part 39

IDocket No. FAA-2009-0608; Directorate Identifier 2008-NM-215-AD; Amendme

39:k\3.& **) ~O\Q707' D;

RIN 2120-AA64

Airworthiness Directives; Boeing 747-200C and -200F Series Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

SUMMARY: We are adopting a new airworthiness directive (AD) for all Boeing

747-200C and -200F series airplanes. This AD requires a high frequency eddy current

(HFEC) inspection for cracks of cenain fastener holes, and corrective action ifnecessa

Thjs.AD also requires repetitive replacements of the upper chords, straps (or angles), a

radius fillers of certain upper deck floor beams, and, for any replacement that is done,

detailed and open-hole HFEC inspections for cracks of the modified upper deck Ooor

beams, and cOITective actions if necessary. This AD results from a repon from the

manufacturer that the accomplishment of cCltain existing inspections, repairs, and

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modifications is not adequate to ensure the structural integrity of the affected 7075 sed

aluminum alloy upper deck floor beam upper chords on airplanes that have exceeded

certain thresholds. We are issuing this AD to prevent cracking of tile upper chords and

straps (or angles) oflhe Ooor beams, which could lead to failure of the noor beams and

consequent loss of controllability. rapid decompression, and loss of structural integrity

the airplane.

DATES: This AD is effective [insert dale 35 days after date of publication in the

FEDERAL REGISTER].

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DEPARTMENT OF TRANSPORTA nON

Federal Aviation Administration

14 CFR Part 39

(Docket No. FAA-2009-0608; Directorate Identifier 2008-NM-215-ADj Amcndmen

39-'*; AD **)

RIN 2120-AA64

Ainvorthiness Directives; Boeing 747-200C and -200F Series Airplanes

AGENCY: Federal Aviation Administration (FAA). DOT.

ACTION: Final rule.

SUMMARY: We are adopting a new airworthiness directive (AD) for all Boeing

747-200C and -lOOF series airplanes. This AD requires a high frequency eddy current

inspection for cracks of certain fastener holes, and corrective action if necessary. This

AD also requires repetitive repjacements of the upper chords, straps (or angles), and

radius fillers of certain upper deck floor beams, and. for any replacement that is done.

detailed and open-hole HFEC inspections for cracks of the modified upper deck floor

beams, and corrective actions if necessary. This AD results from a report from the

manufacturer that the accomplishment of certain existing inspections, repairs, and

modifications is not adequate to ensure the structural integrity orthe affected 7075 seric

alwninum alloy upper deck floor beam upper chords on airplanes that have exceeded

certain thresholds. We are issuing this AD to prevent cracking of the upper chords and

straps (or angles) of the floor beams, which could lead to failure of the noor beams and

consequem loss or controllability, rapid decompression. and loss of structural integrity

the airplane.

DATES: This AD is effective [insert date 35 days aHer date of publication in the

FEDERAL REGISTER].

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AD also requires repetitive replacements of the upper chords, straps (or angles), and

inspection for cracks of certain fastener holes, and corrective action if necessary. This

747-200C and -lOOF series airplanes. This AD requires a high frequency eddy current

manufacturer that the accomplishment of certain existing inspections, repairs, and

beams, and corrective actions if necessary. This AD results from a report from the

detailed and open-hole HFEC inspections for cracks of the modified upper deck floor

radius fillers of certain upper deck floor beams, and, for any replacement that is done,

RIN 2I20-AA64

SUMMARY: We are adopting a new amvorthiness directive (AD) for all Boeing

14 CFR Part 39

Federal Aviation Administration

Ainvorthiness Directives; Boeing 747-200C and -lOOF Series Airplanes

AGENCY: federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

modifications is not adequate to ensure the structural integrity of the affected 7075 seri

aluminum alloy upper deck floor beam upper chords on airplanes that have exceeded

certain thresholds. We are issuing this AD to prevent cracking of the upper chords and

straps (or angles) of the floor beams, which could lead to failure of the floor beams and

consequent loss of controllability, rapid decompression, and loss of structural integrity

the airplane.

DATES: This AD is effective [insert date 35 days after date of publication in the

FEDERAL REGISTER].

[Docket No. FAA-2009-0608j Directorate Identifier 2008-N"M-215-AD; Amcndme

,39-**; AD **)