AD 67-15-03

67-15-03 ROLLS-ROYCE: Amdt. 39-399 Part 39 Federal Register April 14, 1967. Applies to All Dart Series 525, 526, 527, 528, 529, 531, and 532-7 Series Engines with Rolls-Royce Modification 529 (Part 2) Bearing in the Rear Position.

Compliance required as indicated.

(a) Inspect the oil filter on all Dart 525, 526, 527, 528, 529, 531, and 532-7 Series engines modified in accordance with Rolls-Royce Modification 529 Part 2 Standard at the following times:

(1) Within 25 hours' time in service after the effective date of this AD, unless already accomplished within the last 25 hours, and thereafter at intervals not exceeding 50 hours' time in service from the last inspection; and

(2) Before further flight, when an increase in oil consumption or a drop in oil pressure is reported.

(b) If metal particles are found in the filters, remove the engine from service and further inspect to determine whether repairs are required.

(c) If the inspection in (b) indicates that repairs are required, modify the rear bearing in accordance with Rolls Royce Dart Service Bulletin No. Da. 72-232, by implementing any of the following modifications as applicable

(1) Mod. 1023, Mod. 1030 and DRS. 411;

(2) Mod. 1106 or Mod. 1109; or

(3) Mod. 1167.

(d) Upon request of the operator, an FAA maintenance inspector, subject to prior approval of the Chief, Aircraft Certification Staff, Europe, Africa and Middle East Region, may adjust the repetitive inspection intervals specified in this AD to permit compliance at an established inspection period of the operator if the request contains substantiating data to justify the increase for such operator.

This supersedes AD 63-21-7.

This directive effective May 14, 1967.