(l)  
Mark actual elevator trailing edge neutral position on masking tape.

(m)  
Using actual elevator trailing edge neutral position as a reference, mark elevator positions in steps (n) and (o) on masking tape.

(n)  
Move captain's column slowly aft and hold at indicated elevator position. The following conditions shall be met:

500 
Oct 20/89  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  27-31-0 Page 527 

NOTE:  Ensure that control columns are not disturbed from this position during the next step.
500 
27-31-0 Page 528  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  Jun 20/85 

CAPTAIN'S CONTROL COLUMN AFT 
Right elevator position  Required column force - pounds 
Breakout 1  5.0 (士2.0) 
1.95 (士0.05) in. up  12.5 (士2.0) 
5.10 (士0.05) in. up  21.0 (士2.0) 
9.45 (士0.05) in. up  28.0 (士3.0)

Measure column force when elevator starts to move.
(o)  Move captain's control column slowly forward. The following conditions shall be met:
CAPTAIN'S CONTROL COLUMN FORWARD 
Right elevator position  Required column force - pounds 
Breakout 1  5.5 (士2.0) 
1.95 (士0.05) in. dn  13.5 (士2.0) 
5.10 (士0.05) in. dn  22.0 (士2.0) 
9.45 (士0.05) in. dn  29.5 (士3.0)

Measure column force when elevator starts to move.
(p)  
Position flight controls hydraulic system B switch to OFF, leave system A switch ON.

(q)  
Move captain's control column aft until column stops are contacted and hold while measuring. The following conditions shall be met: 1) Right elevator trailing edge shall deflect 14.60 (+0.30/-0.55) inches up from

index mark.
500 
Feb 15/77  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  27-31-0 Page 529 

2)  Right tab trailing edge shall deflect 0.92 +0.10/-0.14 inch down from right elevator trailing edge for airplanes with metal-fiberglass elevators and 0.89 +0.10/-0.14 inches down for airplanes with composite elevators.
3)  Left tab trailing edge shall be faired with left elevator trailing edge within 0.07 inches for airplanes with metal-fiberglass and 0.03士0.07 inches up for airplanes with composite elevators.
(r)  Move captain’s control column forward until column stops are contacted and hold while measuring. The following conditions shall be met: 1) Right elevator trailing edge shall deflect 10.55 (+0.20/-0.30) inches down from
index mark on tail cone.
2)  Right tab trailing edge shall deflect 1.03 士0.10 inches up from right elevator trailing edge for airplanes with metal-fiberglass elevators and 1.06 士0.10 inches up for airplanes with composite elevators.
3)  Left tab trailing edge shall be faired with left elevator trailing edge within 0.07 inches for airplanes with metal-fiberglass elevators and up 0.03士0.07 inches for airplanes with composite elevators.
(s)  
Position flight controls hydraulic system A switch to OFF and system B switch to ON.

(t)  
Move captain's control column aft until column stops are contacted and hold while measuring. The following conditions shall be met: 1) Right elevator trailing edge shall deflect 14.60 (+0.30/-0.55) inches up from

index mark on tail cone.
2)  Right tab trailing edge shall be faired with right elevator trailing edge within 0.07 inches for airplanes with metal-fiberglass elevators and up 0.03士0.07 inches for airplanes with composite elevators.
3)  Left tab trailing edge shall deflect 0.92 +0.10/-0.14 inches down from left elevator trailing edge for airplanes with metal-fiberglass elevators and 
0.89 + 0.10/-0.14 inches down for airplanes with composite elevators.
500 
27-31-0 Page 530  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  May 01/01 

(u)  Move captain's control column forward until column stops are contacted and hold while measuring. The following conditions shall be met: 1) Right elevator trailing edge shall deflect 10.55 +0.20/-0.30 inches down from
index mark on tail cone.
2)  Right tab trailing edge shall be faired with right elevator trailing edge within 0.07 inches for airplanes with metal-fiberglass elevators and up 0.03士0.07 inches for airplanes with composite elevators.
3)  Left tab trailing edge shall deflect 1.03士0.10 inches up from left elevator trailing edge for airplanes with metal-fiberglass elevators and 1.06 士0.10 inches up for airplanes with composite elevators.
　
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