AD 2005-21-05 Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG (Formerly Rolls-Royce Deutschland GmbH, formerly BMW Rolls-Royce GmbH) Models BR700-710A1-10 and BR700-710A2-20 Turbofan Engines

This AD applies to Rolls-Royce Deutschland Ltd & Co KG (RRD) (formerly Rolls-Royce Deutschland GmbH, formerly BMW Rolls-Royce GmbH) models BR700-710A1-10 and BR700-710A2-20 turbofan engines. These engines are installed on, but not limited to, Bombardier Inc. BD-700-1A10, BD-700-1A11, and Gulfstream Aerospace Corp. G-V series airplanes.

You are responsible for having the actions required by this AD performed within the compliance times specified unless the actions have already been done. Initial Inspection Engines With Fan Disc P/N BRR18803 or BRR19248 Installed and Fan Blades P/N BRR20677 or BRR23178 Installed (f) For engines with fan disc P/N BRR18803 or BRR19248 installed, and fan blades P/N BRR20677 or BRR23178 installed, do the following: (1) If the last fan disc inspection was a visual inspection performed using RRD SB No. SB-BR700-72-900229, Revision 3, dated July 12, 2001; Revision 4, dated December 20, 2001; Revision 5, dated January 8, 2003; or Revision 6, dated February 23, 2005, visually or ultrasonically inspect fan disc within 25 flight cycles-since-last inspection (CSLI). Use paragraphs A. through F. of the applicable Part 1 or Part 2 of the Accomplishment Instructions of RRD SB No. SB-BR700-72-900229, Revision 6, dated February 23, 2005 to do the inspection. (2) If the last fan disc inspection was an ultrasonic inspection performed using RRD SB No. SB-BR700-72-900229, Revision 3, dated July 12, 2001; Revision 4, dated December 20, 2001; Revision 5, dated January 8, 2003; or Revision 6, dated February 23, 2005, visually or ultrasonically inspect fan disc within 75 CSLI. Use paragraphs A. through F. of the applicable Part 1 or Part 2 of the Accomplishment Instructions of RRD SB No. SB-BR700-72-900229, Revision 6, dated February 23, 2005 to do the inspection. (3) For engines that have not yet been inspected, visually or ultrasonically inspect fan disc within 25 flight cycles after the effective date of this AD. Use paragraphs A. through F. of the applicable Part 1 or Part 2 of the Accomplishment Instructions of RRD SB No. SB-BR700-72-900229, Revision 6, dated February 23, 2005 to do the inspection. (4) If any cracks are found, remove the disc from service and replace with a serviceable disc. Engines With Fan Disc P/N BRR20791 Installed, and Fan Blades P/N BRR20677 or BRR23178 Installed (g) For BR700-710A1-10 engines with serial numbers (SNs) 11452 and lower, and BR700-710A2-20 engines with SNs 12352 and lower, with fan disc P/N BRR20791 installed, and fan blades P/N BRR20677 or BRR23178 installed, do the following: (1) If the last fan disc inspection was a visual inspection performed using RRD SB No. SB-BR700-72-900229, Revision 3, dated July 12, 2001; Revision 4, dated December 20, 2001; Revision 5, dated January 8, 2003; or Revision 6, dated February 23, 2005, visually or ultrasonically inspect fan disc within 25 CSLI. Use paragraphs A. through F. of the applicable Part 1 or Part 2 of the Accomplishment Instructions of RRD SB No. SB-BR700-72-900229, Revision 6, dated February 23, 2005 to do the inspection. (2) If the last fan disc inspection was an ultrasonic inspection performed using RRD SB No. SB-BR700-72-900229, Revision 3, dated July 12, 2001; Revision 4, dated December 20, 2001; Revision 5, dated January 8, 2003; or Revision 6, dated February 23, 2005, visually or ultrasonically inspect fan disc within 150 CSLI. Use paragraphs A. through F. of the applicable Part 1 or Part 2 of the Accomplishment Instructions of RRD SB No. SB-BR700-72-900229, Revision 6, dated February 23, 2005 to do the inspection. (3) For engines that have not yet been inspected, visually or ultrasonically inspect fan disc within 25 flight cycles after the effective date of this AD. Use paragraphs A. through F. of the applicable Part 1 or Part 2 of the Accomplishment Instructions of RRD SB No. SB-BR700-72-900229, Revision 6, dated February 23, 2005 to do the inspection. (4) If any cracks are found, remove the disc from service and replace with a serviceable disc. (h) For BR700-710A1-10 engines with SNs 11453 and higher, and BR700-710A2-20 engines with SNs 12353 and higher with fan discs P/N BRR20791 installed, and fan blades P/N BRR20677 or BRR23178 installed, do the following: (1) Visually or ultrasonically inspect fan discs within 150 flight cycles-since-new (CSN). Use paragraphs A. through F. of the applicable Part 1 or Part 2 of the Accomplishment Instructions of RRD SB No. SB-BR700-72-900229, Revision 5, dated January 8, 2003; or Revision 6, dated February 23, 2005 to do the inspection. (2) If any cracks are found, remove the disc from service and replace with a serviceable disc. Engines With New Production Fan Discs (i) For engines with new production fan discs P/N BRR20791 installed on or after January 1, 2002, and fan blades P/Ns BRR20677 or BRR23178 installed, do the following: (1) Visually or ultrasonically inspect fan discs within 150 flight CSN. Use paragraphs A. through F. of the applicable Part 1 or Part 2 of the Accomplishment Instructions of RRD SB No. SB-BR700-72-900229, Revision 5, dated January 8, 2003; or Revision 6, dated February 23, 2005 to do the inspection. (2) If any cracks are found, remove the disc from service and replace with a serviceable disc. Repetitive Inspections Engines With Fan Disc P/N BRR18803 or BRR19248 Installed, and Fan Blades P/N BRR20677 or BRR23178 Installed (j) For engines with fan disc P/N BRR18803 or BRR19248 installed, and fan blades P/N BRR20677 or BRR23178 installed, do the following: (1) Perform repetitive visual or ultrasonic inspections within every 75 CSLI. Use paragraphs A. through F. of the applicable Part 1 or Part 2 of the Accomplishment Instructions of RRD SB No. SB-BR700-72-900229, Revision 5, dated January 8, 2003; or Revision 6, dated February 23, 2005 to do the inspection. (2) Perform a visual and ultrasonic inspection before accumulating 550 flight hours-since-new. Use paragraphs A. through F. of the applicable Part 1 or Part 2 of the Accomplishment Instructions of RRD SB No. SB-BR700-72-900229, Revision 5, dated January 8, 2003, or Revision 6, dated February 23, 2005 to do the inspection. (3) Thereafter, perform a visual and an ultrasonic inspection at every A-Check but not to exceed 550 flight hours-since-the last visual and ultrasonic inspection. Engines With Fan Disc P/N BRR20791 Installed, and Fan Blades P/N BRR20677 or BRR23178 Installed (k) For engines with fan disc P/N BRR20791 installed, and fan blades P/N BRR20677 or BRR23178 installed, do the following: (1) Perform repetitive visual or ultrasonic inspections within every 150 CSLI. Use paragraphs A. through F. of the applicable Part 1 or Part 2 of the Accomplishment Instructions of RRD SB No. SB-BR700-72-900229, Revision 5, dated January 8, 2003; or Revision 6, dated February 23, 2005 to do the inspection. (2) Perform a visual and ultrasonic inspection before accumulating 550 flight hours-since-new. Use paragraphs A. through F. of the applicable Part 1 or Part 2 of the Accomplishment Instructions of RRD SB No. SB-BR700-72-900229, Revision 5, dated January 8, 2003, or Revision 6, dated February 23, 2005 to do the inspection. (3) Thereafter, perform a visual and an ultrasonic inspection at every A-Check but not to exceed 550 flight hours-since-the last visual and ultrasonic inspection. Engines With Fan Disc P/N BRR20791, BRR24829, or FW33929 Installed, and Fan Blades P/N FW33513, FW33980, FW33925, FW34114, or FW34776 Installed (l) For engines with fan disc P/N BRR20791, BRR24829, or FW33929 installed, and fan blades P/N FW33513, FW33980, FW33925, FW34114, or FW34776 installed, initial and repetitive inspections are mandated in RRD Time Limits Manual T-710-1BR, Chapter 05-10-01 (BR700-710A1-10), and RRD Time Limits Manual T-710-2BR, Chapter 05-10-01 (BR700-710A2-20). Optional Terminating Action (m) Installation of a new fan disc P/N FW33927, new fan blades, P/N FW33513, or P/N FW33980, and N1 Keep Out Zone software with EEC P/Ns 1501KDC02-010, or 1501KDC03-010, or 1501KDC05-010, or 1520KDC05-010, or 1520KDC05R-010, or 1520KDC07-010, or 1520KDC08-010, is optional terminating action to any inspection required by this AD. Inspection Reporting Requirements (n) Report defects in accordance with the applicable Part 1 or Part 2 of RRD SB No. SB-BR700-72-900229, Revision 5, dated January 8, 2003; or Revision 6, dated February 23, 2005. Reporting requirements have been approved by the Office of Management and Budget (OMB) and assigned OMB control number 2120-0056. Alternative Methods of

This AD results from a revised RRD service bulletin (SB) that introduces relaxed inspection intervals for certain P/N combinations of fan discs and fan blades, and introduces improved design fan discs and fan blades. The actions specified in this AD are intended to detect and prevent cracks in the fan disc that could result in an uncontained engine failure and damage to the airplane.