AD 71-06-05

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AD Number:
71-06-05
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
ROLLS-ROYCE Models 506, 510, 511, 511-7E, 514, and 514-7 Engines
Subject:
Turbine Disc Retaining Bolt
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
04/12/1971
Make:
Rolls-Royce Deutschland Ltd & Co KG
Model:
Dart 506 | Dart 510 | Dart 511 | Dart 511-7E | Dart 514 | Dart 514-7
Product Type:
Engine
Product Subtype:
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 71-06-05
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-1172

AD NUMBER:   71-06-05

SUBJECT HEADING:   ROLLS-ROYCE Models 506, 510, 511, 511-7E, 514, and 514-7 Engines

ACTION:  

SUMMARY:  

DATES:   Effective April 12, 1971.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
71-06-05 ROLLS-ROYCE: Amdt. 39-1172. Applies to Rolls-Royce Dart engine models 506, 510, 511, 511-7E, 514, and 514-7 installed on, but not necessarily limited to British Aircraft Corporation Viscount 744 and 745D; Fairchild F-27 and F-27B; and Fokker F-27 airplanes.

Compliance is required as indicated, unless already accomplished.

(a) For all engines installed on airplanes having an average daily utilization rate of more than three hours flight time per day, comply with paragraph (c) within the next 4,000 hours' time in service after the effective date of this AD, or at the next engine overhaul, whichever occurs first.

(b) For all engines installed on airplanes having an average daily utilization rate of three hours flight time or less per day, comply with paragraph (c) within the next 2,000 hours' time in service after the effective date of this AD, or at the next engine overhaul, whichever occurs first.

(c) Replace Rolls-Royce turbine disc retaining bolt P/N RK 33044 with P/N RK 43376 in accordance with Rolls-Royce Dart Aero Engine Service Bulletin Number Da 72-347, Revision 2, dated July 24, 1970, or later ARB-approved revision, or an FAA-approved equivalent.

(d) For the purpose of complying with this AD, the average daily utilization rate shall be determined on the basis of the average daily utilization rate for the 12-month period immediately preceding the effective date of this AD.

This amendment becomes effective April 12, 1971.

FOOTER: