# AD 78-24-01 R1: Control Box Mounting Bolt Failure - Type: Airworthiness directive - Status: Current - Products: Rolls-Royce Deutschland Dart 506, Dart 510, Dart 511, Dart 514, Dart 514-7, Dart 525, Dart 525F, Dart 526, Dart 527, Dart 528-7E, Dart 528D-7E, Dart 529-7E and 25 more - Effective: May 12, 1983 - Superseded by: Nothing supersedes this AD - Product type: Engine - Amendment: 39-4641 - Registered aircraft: 5 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0301B53114BB512E8625685F00567929.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/78-24-01-R1 ## The airworthiness directive 78-24-01 R1 ROLLS-ROYCE LIMITED: Amendment 39-3345 as amended by Amendment 39-4641. Applies to Rolls-Royce DART engines and all variants of those engines listed below which have Rolls-Royce DART Modification 1525 incorporated (covered in Rolls-Royce DART Service Bulletin Da 72-351), as installed on, but not necessarily limited to the airplanes listed below. DART Engine Airplane 506, 510, 525, 530 Vickers Viscount Model 744, 745D, 810 511, 514, 528, 532 Fairchild F-27 & FH-227 series and Fokker F-27 series 526 Armstrong Whitworth AW-650 series 1 527 Handley Page Herald Type 300 529 Grumman G-159 and Fairchild F-27 and FH-227 series 532 Hawker Siddeley 748 series 2 542 General Dynamics Model 240 with STC No. SA1054WE installed (or Model 600), General Dynamics Model 340/440 with STC No. SA1096WE installed (or Model 640), and Nihon YS-11 and YS-11A series. Compliance is required as indicated, unless already accomplished. 1. Compliance for all affected DART engines except the Mk. 530 is based on an effective date of December 11, 1978. 2. Compliance for the DART Mk. 530 engines is based on an effective date of May 12, 1983. To prevent restricted movement of the engine power lever or the high pressure fuel shut-off valve control lever caused by control box mounting bolt failure, accomplish the following: (a) Within the next 100 hours engine time in service or one month after the effective date of this AD, whichever occurs first, inspect the engine control box mounting bolts for integrity as specified in paragraph 5 of Rolls-Royce Service Bulletin Da 76-A17, Revision 1, dated April 4, 1978 (hereinafter referred to as the service bulletin) or an FAA-approved equivalent. (b) If, during an inspection required by this AD, a bolt head is found to be detached or missing, before further flight replace both mounting bolts either - (1) With new bolts of the same part number in accordance with paragraph 6 of the Service Bulletin or an FAA-approved equivalent and continue to inspect the bolts in accordance with paragraph (a) of this AD at intervals not to exceed 400 hours engine time in service or 4 months, whichever occurs first; or (2) Install control box mounting bolts, in accordance with Rolls-Royce Service Bulletin Da 76-16, dated April 18, 1978, or an FAA-approved equivalent. (c) If a detached or missing bolt head is not found during the inspection required by paragraph (a) of this AD, continue to inspect the bolts in accordance with that paragraph at intervals not to exceed 400 hours engine time in service or 4 months, whichever occurs first. (d) The inspections required by paragraphs (b)(1) and (c) of this AD may be discontinued upon the installation of control box mounting bolts in accordance with Rolls-Royce Service Bulletin Da 76-16, dated April 18, 1978, or an FAA-approved equivalent. (e) Upon request of an operator, the Manager, Aircraft Certification Staff, FAA, Europe, Africa, and Middle East Office, c/o American Embassy, Brussels, Belgium, may adjust the inspection interval specified in paragraphs (b) and (c) of this AD provided that such requests are made through an FAA maintenance inspector and the request contains substantiating data to justify the request for that operator. Amendment 39-3345 became effective December 11, 1978. This Amendment 39-4641 becomes effective May 12, 1983. ## Affected data sheets (3) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS E-297](https://openairdocs.org/tcds/E-297): Rolls-Royce Deutschland Ltd & Co KG; names 23 of 31 models: Dart 532-7R, Dart 529D-8H, Dart 529-8X, Dart 529-7H, Dart 529-8H, Dart 529D-8Z, Dart 529-8E, Dart 528-7E… - [TCDS E5EU](https://openairdocs.org/tcds/E5EU): Rolls-Royce Deutschland Ltd & Co KG; names 5 of 5 models: Dart 542-4, Dart 542-10, Dart 542-4K, Dart 542-10K, Dart 542-10J - [TCDS E-283](https://openairdocs.org/tcds/E-283): Rolls-Royce Deutschland Ltd & Co KG; names 3 of 4 models: Dart 514, Dart 511, Dart 514-7 ## Registered aircraft it may apply to (OpenAirDocs) Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment. - Aircraft: 5 (0 by airframe model, 5 by engine model) - Makers: Grumman 3, Fairchild 1, Nihon 1 Models with the most aircraft: - [Rolls-Royce DART-529 series](https://openairdocs.org/engine/rolls-royce-dart-529-series): 4 aircraft (engine model) - [Rolls-Royce DART-542 series](https://openairdocs.org/engine/rolls-royce-dart-542-series): 1 aircraft (engine model) All 2 models: https://openairdocs.org/ad/78-24-01-R1/models.md Every aircraft: https://openairdocs.org/ad/78-24-01-R1/aircraft.md ## Related documents - [STC SA1054WE](https://openairdocs.org/stc/SA1054WE): Installation of Rolls-Royce model Dart 542-4 engines with Dowty Rotol R245/4-40-4.5/13 propellers and associated modifications to engine mounting, nacelle, empennage, accessories, systems and equipment.. Executive Jet Aircraft Co. LTD. c/o Southeast Aero Tek Inc., Cited in the text - [STC SA1096WE](https://openairdocs.org/stc/SA1096WE): Rolls Royce Dart 542-4 engines with Dowty Rotol (c) R245/4-40-4.5/13 or (c) R259/4-40-4.5/17 propellers and associated modifications.. Kelowna Flightcraft Ltd, Cited in the text --- From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.