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Turkish Airlines 981

Printed page label not indexed. PDF page 34.

was bent. - ; - The additional support plate specified for the vent door shaft by SB 52-37 had not been installed! . The push rod (LINK ASSY P/N ADA 7372), between the vent door shaft and the lock tube,
Open official document at PDF page 34French Commission of Inquiry final report: Turkish Airlines DC-10 TC-JAV, official UK-hosted English translation

Turkish Airlines 981

Printed page label not indexed. PDF page 40.

same type loaned by McDonnell Douglas, from which the support plate specified by SB 52-37 had been removed, thus making it conform to the definition of the door with which TC-JAV was equipped, Tests on a door with the same
Open official document at PDF page 40French Commission of Inquiry final report: Turkish Airlines DC-10 TC-JAV, official UK-hosted English translation

Turkish Airlines 981

Printed page label not indexed. PDF page 41.

deformation affected the vent door shaft. The additional support plate specified by SB 52-37 (fig 6) was designed precisely to prevent such deformation. . It should be noted that the partial engagement of the lock pins as reproduced on the
Open official document at PDF page 41French Commission of Inquiry final report: Turkish Airlines DC-10 TC-JAV, official UK-hosted English translation

Turkish Airlines 981

Printed page label not indexed. PDF page 42.

Alert Service Bulletin 52-35 and in Service Bulletins 52-27 and 32-37 Gn the case of 52-37, only a start had been made with its application to TC-J AY), Other modifications of the door closing system and methods of mitigating the
Open official document at PDF page 42French Commission of Inquiry final report: Turkish Airlines DC-10 TC-JAV, official UK-hosted English translation

Turkish Airlines 981

Printed page 46. PDF page 51.

Nevertheless, as regards the aft cargo door on the left-hand side: ~ A Service Bulletin 52-37, specifying the installation of a support plate designed to prevent forced closing of the locking handle and the vent door in the case of
Open official document at PDF page 51French Commission of Inquiry final report: Turkish Airlines DC-10 TC-JAV, official UK-hosted English translation

Turkish Airlines 981

Printed page 47. PDF page 52.

from a combination of various factors: - incomplete application of Service Bulletin 52-37; - imcorrect modifications and adjustments which led, in particular, to insufficient protrusion of the lock pins and to the switching off of the flight deck visual warning
Open official document at PDF page 52French Commission of Inquiry final report: Turkish Airlines DC-10 TC-JAV, official UK-hosted English translation