AD 78-07-03

78-07-03 GENERAL ELECTRIC: Amendment 39-3164 as amended by Amendment 39-3211. Applies to CF6-6D and CF6-6D1 engines installed in aircraft certificated in all categories.

To prevent failure of the 11-13 Stage Compressor Spool, P/N 9021M66 (all assembly part numbers), thirteenth stage rim compliance is required, unless previously accomplished, as follows:

(a) Modify the 11-13 spool in accordance with General Electric Service Bulletin 72-682 not later than December 31, 1979.

(b) Pending modification per (a) above inspect the following 11-13 spool serials in accordance with General Electric Service Bulletin 72-673 or 72-700 within the next 500 cycles in service after the effective date of this AD and thereafter each 700 cycles in service if previously inspected in accordance with General Electric Service Bulletin 72-700 or 1800 cycles in service if previously inspected in accordance with General Electric Service Bulletin 72-673.

MP31293A MP021392 MP022819 MP023561 MP024432 MP024433 MP025458 MP025463 MP025472 MP027903 MP027906 MP028163 MP028175 MP028176 MP028574 MP028711 MP029244 MP029245 MP029246 MP031291 MP031292 MP031304 MP031736 MP032456 MP033570 MP034332 MP034468 MP034648 MP034649 MP034808 MP034810 MP034821 MP034822 MP034823 MP035315 MP035343 MP035344 MP035350 MP035351 MP035353 MP035816 MP035821 MP035823 MP035836 MP035844 MP035847 MP035848 MP036810 MP036814 MP036829 MP037135 MP0A0123 MP0A0129 MP0A0134 MP0A0138 MP0A0140 MP0A0161 MP0A0273 MP0A0277 MP0A0278 MP0A0280 MP0A0281 MP0A0286 MP0A0287 MP0A0292 MP0A0293 MP0A0354 MP0A0379 MP0A0383 MP0A0396 MP0A0400 MP0A0402 MP0A0404 MP0A0411 MP0A0430 MP0A0446 MP0A0450 MP0A0458 MP0A0571 MP0A0579 MP0A0587 MP0A0589 MP0A0591 MP0A0600 MP0A0604 MP0A0643 MP0A0644 MP0A0645 MP0A0648 MP0A0652 MP0A0659 MP0A0660 MP0A0744 MP0A0751 MP0A0755 MP0A0797 MP0A0811 MP0A0813 MP0A0816 MP0A0819 MP0A0820 MP0A0822 MP0A0830 MP0A0831 MP0A0875 MP0A0876 MP0A0882 MP0C0889 MP0C3154 MPX32453 RP021891 RP022426 RP023605 RP023614 RP024401

The manufacturer's specifications and procedures identified in this directive are incorporated herein and made part hereof pursuant to 5 U.S.C. 553(a)(1). All persons affected by this directive who have not already received these documents from the manufacturer may obtain copies upon request to General Electric Company, Cincinnati, Ohio 45215. These documents may also be examined at the Great Lakes Regional Office, 2300 East Devon Avenue, Des Plaines, Illinois 60018, and at FAA Headquarters, 800 Independence Avenue, S.W., Washington, D.C. 20591. A historical file on this airworthiness directive which includes incorporated material in full is maintained by the FAA at its headquarters in Washington, D.C., and the Great Lakes Region.

Amendment 39-3164 became effective April 6, 1978.

This amendment 39-3211 becomes effective May 22, 1978.