60-04-05 ROLLS-ROYCE: Amdt. 103 Part 507 Federal Register February 17, 1960. Applies to Dart 510 Engines.
Compliance required as indicated.
In order to prevent failure of impeller shaft, P/N 10543/16719, the following action shall be taken:
Beginning April 20, 1960, all impeller shafts, P/N 10543/16719, which have been in operation for 6,000 hours or more, shall be replaced by new impeller shafts of the same part number or by any subsequent approved impeller shafts. (Rolls-Royce Modification 378 covers this subject.)