AD 83-15-10

83-15-10 EMBRAER: Amendment 39-4699. Applies to Models EMB-110P1 and EMB-110P2 (S/N 110001 through 110386, 110388 through 110397, 110399 through 110401, 110404 through 110408, 110410 through 110412, 110414 and 110421) airplanes certificated in any category.

Compliance: Required as indicated, unless already accomplished.

To preclude flutter from occurring in any control surface, accomplish the following:

a) Within the next 30 days after the effective date of this AD, check the elevators for static balance in accordance with the procedures shown in Item 1.118 of the EMBRAER Structural Repair Manual, T.O.-IC95-3 and T.O.-IC95A-3. If an unbalanced condition is found, prior to further flight, rebalance the elevator in accordance with the procedures shown in Item 1.119 of the EMBRAER Structural Repair Manual, T.O.-IC95-3 and T.O.-IC95A-3, but replace Figure 1-24 with Figure 1 of this AD. Do not exceed the mass balance weight values of Table 1-6A of this AD.

b) Within the next 60 days after the effective date of this AD, check the ailerons and rudder for static balance in accordance with the procedures shown in Item 1.118 of the EMBRAER Structural Repair Manual, T.O.-IC95-3 and T.O.-IC95A-3. If an unbalanced condition is found, prior to further flight, rebalance the ailerons and rudder in accordance with the procedures shown in Item 1.119 of the EMBRAER Structural Repair Manual, T.O.-IC95-3 and T.O.-IC95A-3, but replace Figure 1-24 with Figure 1 of this AD. Do not exceed the mass balance weight values of Tables 1-6B and 1-6C, respectively, of this AD.

c) When checking the balance of the control surfaces in accordance with paragraphs a) and b) of this AD):

1) Remove the surface from the airplane, complete, finished and painted, static discharge wicks installed, trim tab activating rod installed, trim tab activating teleflex cable (case of the left elevator) installed and attached as in the airplane. In this case, the elevator trim tab teleflex cable must be attached to the bellcrank by the clamp only.

d) Aircraft may be flown in accordance with FAR 21.197 to a location where this (AD) can be accomplished.

e) An equivalent method of compliance with this AD, if used, must be approved by the Manager, Atlanta Aircraft Certification Office, ACE-115A, 1075 Inner Loop Road, College Park, Georgia 30337.

This amendment becomes effective August 9, 1983.

FIGURE 1 (Sheet 1 of 3) AD 83-15-10

FIGURE 1 (Sheet 2 of 3) AD 83-15-10

FIGURE 1 (Sheet 3 of 3) AD 83-15-10

LH ELEVATOR RH ELEVATOR

POSITION (STATION)

Y3622

Y563 Y202.6 Y202.6 Y3622

Wmax STRUCTURAL

7850

4000 4000 4000 7850

Table 1-6A. Mass-Balance Weight Values (Grams)

LH AILERON RH AILERON

POSITION Y5419.0 to Y6700.8 Y4098.3 to Y5309.8 Y5309.8 Y4098.3Y4098.3 to Y5309.8 Y5309.8Y5419.0 to Y6700.8

Wmax STRUCTURAL

4200

4200 500 500 4200 500 4200

Table 1-6B. Mass-Balance Weight Values (grams)

RUDDER

POSITION

Z2320Z0 to Z353.4 Z353.4 Z69.0

Wmax STRUCTURAL

6500 7500 700 700

Table 1-6C. Mass-Balance Weight Values (grams) AD 83-15-10