A-00-124
NTSB Safety Recommendation — Aviation
Recommendation text
TO THE FEDERAL AVIATION ADMINISTRATION: Conduct a design review of the General Electric CF6-80C2 engine’s high pressure turbine stage 1 disk (including a stress analysis) to evaluate the adequacy of the current design. On the basis of the results of this review and the results of the inspections of blend-repaired disks specified in Safety Recommendation A-00- 121, require appropriate changes to the disk’s design and/or to its continuing airworthiness program; in addition to the requiring eddy current inspections as specified in Safety Recommendation A-00-123, the FAA should consider establishing hard time inspection intervals, or modifying the blend repair procedures and/or the circumstances under which such repairs are allowable.
In plain language (FlightFinder summary)
The Federal Aviation Administration is asked to conduct a design review of the General Electric CF6-80C2 engine’s high pressure turbine stage 1 disk, including a stress analysis, to assess the adequacy of the current design. Based on the review and the results of inspections of blend-repaired disks from Safety Recommendation A-00-121, the FAA should require appropriate design or airworthiness program changes. Additionally, the FAA should consider establishing hard time inspection intervals or modifying blend repair procedures and allowable circumstances, beyond the eddy current inspections required in Safety Recommendation A-00-123.
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 | May 28, 2002 |
| NTSB number | DCA00IA09 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).