Question - Boeing 737-500 Design Eye Reference Point
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Question - Boeing 737-500 Design Eye Reference Point
Hello All:
FAR 25.773 (d) mandates installation of a 'fixed marker or other guide' in transport category aircraft to ensure that the pilots adjust their seating position such that they are positioned at the design eye reference point.
Looking at pictures of 737-500 flight compartments, I cannot see any evidence of an 'occluded sphere' type reference device installed on the windshield center post. Has Boeing used a different type of 'fixed marker or other guide' on these early 737s to comply with this FAR, and if so, what methodology did they use? Or, were these aircraft built to a certification basis that preceded publication of FAR 25.773 (d)?
Many thanks in advance for any light that an expert could shed on this question.
FAR 25.773 (d) mandates installation of a 'fixed marker or other guide' in transport category aircraft to ensure that the pilots adjust their seating position such that they are positioned at the design eye reference point.
Looking at pictures of 737-500 flight compartments, I cannot see any evidence of an 'occluded sphere' type reference device installed on the windshield center post. Has Boeing used a different type of 'fixed marker or other guide' on these early 737s to comply with this FAR, and if so, what methodology did they use? Or, were these aircraft built to a certification basis that preceded publication of FAR 25.773 (d)?
Many thanks in advance for any light that an expert could shed on this question.
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Design Eye Reference Point
Dear V1....Ooops
The Boeing to my knowledge has not used any fixed type of Design Eye Reference Mark but used a guide instead to locate this reference.
This Reference is same on B737-classic and NG fleet. I quote below from the Boeing FCOM:
Sorry , the picture showing (A) and (B) could not be copied. You could refer any FCOM for that.
Hope that keeps you informed.
Happy flying.
The Boeing to my knowledge has not used any fixed type of Design Eye Reference Mark but used a guide instead to locate this reference.
This Reference is same on B737-classic and NG fleet. I quote below from the Boeing FCOM:
"Pilot Seat Adjustment
Adjust the seat position with the appropriate controls to obtain the optimum eye reference position. Use the handhold above the forward window to assist. The following sight references are used:
Adjust the seat position with the appropriate controls to obtain the optimum eye reference position. Use the handhold above the forward window to assist. The following sight references are used:
• Sight along the upper surface of the glareshield with a small amount of
the airplane nose structure visible (A)
the airplane nose structure visible (A)
• Sight over the control column (in the neutral position) until the bottom
edge of the outboard display unit is visible (B)."Sorry , the picture showing (A) and (B) could not be copied. You could refer any FCOM for that.
Hope that keeps you informed.
Happy flying.
