| AD Number | 77-08-08 | Status | Active |
| Effective Date | February 14, 1980 | Issue Date | Not specified |
| Docket Number | Unknown | Amendment | 39-3690 |
| Product Type | ["Engine"] | Product Subtype | Not specified |
| CFR Part | --- - Part 39 | CFR Section | N/A |
| Citation | This information is not available. | ||
| Manufacturer(s) | General Electric Company |
| Model(s) | CF6-50A CF6-50C CF6-50C1 CF6-50E CF6-50E1 |
77-08-08 GENERAL ELECTRIC: Amendment 39-2878 as amended by Amendment 39-3690. Applies to General Electric Models CF6-50A, CF6-50C, CF6-50C1, CF6-50D, CF6-50E, CF6-50E1, and CF6-50H engines that do not incorporate steel high pressure compressor rotors and cases, and are installed in aircraft certificated in all categories. Engines with serial numbers 517451, 517452, 517472 thru 517475, 517502, and subsequent 517 prefixed numbers; and 455907 thru 455912, 455920, and subsequent 455 prefixed numbers were manufactured with steel compressor rotors and cases. Earlier engines may be converted to the steel configuration in accordance with General Electric Service Bulletins (CF6-50/45) 72-547, 72-549, 72-550, and 72-551.
Compliance required by January 31, 1978, unless previously accomplished.
To prevent possible burn through of fuel or oil tubes located below the compressor section, accomplish the following in accordance with General Electric Service Bulletin (CF6-50) 72-447 datedDecember 30, 1976, or subsequent FAA Approved revisions thereto:
(a) Replace the Fuel Manifold, Part Number 9008M43G01, 9008M43G02 or 9008M43G03, with Part Number 9200M17G01, 9200M17G02 or 9200M17G03.
(b) Replace the Lube Supply, Part Number 9043M25G02, with Part Number 9200M11G01.
(c) Replace the "B" Sump Scavenge Aft, Part Number 9068M88G01 or 9194M18G01, with Part Number 9200M10G01.
(d) Replace the "B" Sump Scavenge Forward, Part Number 9005M64G01, with Part Number 9191M72G01.
(e) Replace the "C" Sump Scavenge, Part Number 9054M44G01, with Part Number 9200M15G03.
(f) Replace the "D" Sump Scavenge, Part Number 9055M93G01, with Part Number 9200M16G02.
Equivalent modifications may be approved by the Chief, Engineering and Manufacturing Branch, FAA Great Lakes Region.
Amendment 39-2878 became effective April 29, 1977.
This Amendment 39-3690 becomes effective February 14, 1980.