84-12-03 CASA: Amendment 39-4880. Applies to CASA Model 212 series airplanes, certificated in all categories, as indicated in the applicability statement of each of the following service bulletins.
Compliance is required within the time interval specified in each of the following paragraphs after the effective date of this AD, unless already accomplished:
A. To prevent damage to the D.C. generating circuit, within the next 200 hours time in service, install a new 5 amp fuse and replace the existing 50 amp fuse with a 35 amp fuse in accordance with CASA Service Bulletin 212-24-22 dated November 7, 1979.
B. To prevent the loss of rudder and elevator control, within the next 200 hours time in service, replace the rudder and elevator-to-shaft attach fittings with new design fittings in accordance with CASA Service Bulletin 212-27-12, Revision 3, dated June 12, 1980.
C. To prevent damage to the wing flap actuation system, within the next 200 hours time in service, replace the hydraulic cylinder with a new design cylinder in accordance with CASA Service Bulletin 212-27-13 dated December 17, 1980.
D. To prevent interference with flight controls, within the next 200 hours time in service, modify the flight deck floor structure in accordance with CASA Service Bulletin 212-27- 14 dated November 18, 1980.
E. To prevent damage to the wing flap hydraulic system, within the next 200 hours time in service, replace the hydraulic system relief valve with a new design valve in accordance with CASA Service Bulletin 212-27-15, Revision 1, dated November 30, 1981.
F. To prevent bearing failures, within the next 200 hours time in service, replace the existing wing flap control hinge bearings with a stainless steel bearing in accordance with CASA Service Bulletin 212-27-19 dated July 1, 1982.
G. To prevent relative displacement between the elevator shaft support fittings and the elevator shaft, within the next 500 hours time in service, install safety rings in accordance with CASA Service Bulletin 212-27-23 dated October 7, 1982.
H. To prevent the risk of a fire from fuel collecting forward of the nacelle fire wall, within the next 500 hours time in service, install electric fuel shutoff valves in accordance with CASA Service Bulletin 212-28-11, Revision 1, dated September 2, 1981.
I. To ensure proper joint strength, within the next 200 hours time in service, replace the existing nuts in the outer wing-to-center section splice in accordance with CASA Service Bulletin 212-51-01 dated July 7, 1981.
J. To ensure proper fitting, within the next 200 hours time in service, replace the existing mount bolts with longer bolts in accordance with CASA Service Bulletin 212-51-02 dated September 22, 1981.
K. To ensure proper rudder travel, within the next 200 hours time in service, replace the rudder hinge fittings with new fittings in accordance with CASA Service Bulletin 212-55-07 dated July 1, 1982.
L. To prevent damage to the wing flap structure, within the next 200 hours time in service, retorque the attachment fitting fasteners in accordance with CASA Service Bulletin 212- 57-12 dated September 22, 1981.
M. To ensure engine fire wall integrity, within the next 200 hours time in service, reduce the clearance space between the engine screen control rods and the firewall at the penetration point in accordance with CASA Service Bulletin 212-73-03, Revision 1, dated July 14, 1982.
N. Alternate means of compliance which provide an equivalent level of safety may be used when approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region.
O. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of inspections and/or modifications required by this AD.
This amendment becomes effective July 23, 1984.