A-85-034
NTSB Safety Recommendation — Aviation
Recommendation text
THE NTSB RECOMMENDS THAT THE FEDERAL AVIATION ADMINISTRATION: ISSUE AN AIRWORTHINESS DIRECTIVE (AD) TO REQUIRE THAT OPERATORS OF GENERAL ELECTRIC CF6-50 AND CF6-45 ENGINES, AT THE NEXT SCHEDULED MAINTENANCE INTERVAL: (1) INSPECT THE LEFT-SIDE COOLING AIR TUBE USING AN FAA-APPROVED METHOD CAPABLE OF DETECTING INCIPIENT FATIGUE CRACKS AND REPLACE DEFECTIVE TUBES, AND (2) INSTALL A SLEEVE AND SUPPORT CLAMP ON THE ENGINE LEFT-SIDE COOLING AIR TUBE IN ACCORDANCE WITH GENERAL ELECTRIC SERVICE BULLETIN 75-46.
In plain language (FlightFinder summary)
The FAA is asked to issue an airworthiness directive requiring operators of General Electric CF6-50 and CF6-45 engines to inspect the left-side cooling air tube for incipient fatigue cracks and replace defective tubes, and to install a sleeve and support clamp in accordance with General Electric Service Bulletin 75-46.
This plain-language summary is written by FlightFinder to explain the recommendation above. It is not the official wording — the verbatim NTSB text is quoted above.
Details
| Status | Closed - Acceptable Action |
|---|---|
| Mode | Aviation |
| Closed | Feb 2, 1987 |
| NTSB number | DCA85RA011 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).