AD 73-14-04

73-14-04 ROCKWELL INTERNATIONAL: Amdt. 39-1678. Applies to Rockwell Commander Model 112 airplanes, Serial Numbers 3 through 90 certificated in all categories. Compliance is required prior to next flight. Accomplish the following:

(1) Remove engine control knobs (throttle, mixture, propeller, carburetor heat) (2) Remove cover from throttle quadrant (Royalite) (3) Remove knob from throttle friction lock (4) Remove microphone bracket (5) Remove knob from fuel selector (6) Remove forward arm rest (not applicable on all models) (7) Remove center console fuel selector insert (Royalite) (8) Remove center console cover (Royalite) (9) Remove throttle quadrant cover (aluminum) (10) Move controls to full aft position to expose cables

(11) Using a sharp instrument remove the grommets which seal ends of the sliding control rod to the flex cable housing, if installed. Controls which may have these grommets are: throttle, mixture, propeller and carburetor heat

(12) Remove upper engine cowl, and remove grommets from opposite ends of cables. (Do not remove grommets from ends of cowl flap controls)

(13) A. Functionally check all controls for freedom of operation.

B. Ascertain that no shavings from the grommets are lodged between the cable housing and movable cable.

(14) Reassemble using existing hardware

Rockwell International, Albany Aircraft Division, Service Bulletin, No. SB-112-5 relates to this same subject.

This amendment is effective July 3, 1973, and was effective on receipt for all recipients of the telegram dated June 11, 1973, which contained this amendment.