Airworthiness Directive · Amendment 39-14913 · Rolls-Royce Deutschland Ltd & Co KG Tay 611-8, Tay 620-15, Tay 650-15, and Tay 651-54 Series Turbofan Engines
Rolls-Royce Deutschland Ltd & Co KG Tay 611-8, Tay 620-15, Tay 650-15, and Tay 651-54 Series Turbofan Engines
Superseded. A later AD replaced this one: AD 2014-06-05. Comply with the one in force.
This AD applies to Rolls-Royce Deutschland Ltd & Co KG (RRD) Tay 611-8 and Tay 620-15 turbofan engines with low pressure (LP) compressor module part number (P/N) MO1100AA or P/N MO1100AB installed, and Tay 650-15 and Tay 651-54 turbofan engines with LP compressor module P/N MO1300AA or P/N MO1300AB installed. These engines are installed on, but not limited to, Fokker F.28 Mark 0070 and 0100 airplanes, Boeing 727 airplanes modified in accordance with Supplemental Type Certificate No. SA8472SW, and Gulfstream G-IV airplanes. The following P/N LP compressor fan blades are installed in these modules:
| Tay 611-8 LP compressor fan blade P/Ns | Tay 620-15 LP compressor fan blade P/Ns | Tay 650-15 LP compressor fan blade P/Ns | Tay 651-54 LP compressor fan blade P/Ns |
|---|---|---|---|
| JR30649 | JR30649 | JR31911 | JR31911. |
| JR31702 | JR31702 | JR31912 | JR31912. |
| JR31983 | JR31983 | JR35120 | JR35120. |
| JR33863 | JR35121 | JR35121. | |
| JR33864 | JR33865 | ||
| JR33866 |
The FAA is adopting a new airworthiness directive (AD) for Rolls-Royce Deutschland Ltd & Co KG (RRD) Tay 611-8, Tay 620-15, Tay 650-15, and Tay 651-54 series turbofan engines, with certain low pressure (LP) compressor modules installed. This AD requires an ultrasonic inspection (UI) of LP compressor fan blades for cracks, within 30 days after the effective date of the AD on certain serial number (SN) Tay 650-15 engines. This AD also requires initial and repetitive UIs of LP compressor fan blades on all engines. This AD also requires, for Tay 650-15 and Tay 651-54 engines, UIs of LP compressor fan blades whenever the blade set is removed from one engine and installed on a different engine. This AD results from a report that a set of LP compressor fan blades failed before reaching the LP compressor fan blade full published life limit. We are issuing this AD to prevent LP compressor fan blades from failing due to blade root cracks, leading to uncontained engine failure and damage to the airplane.
You are responsible for having the actions required by this AD performed within the compliance times specified unless the actions have already been done.
For Tay 650-15 engines, serial numbers 17201, 17202, 17226, 17253, 17341, 17356, 17428, 17450, 17457, 17458, 17497, 17530, 17622, 17643, 17655, 17678, 17709, 17751, 17755, 17805, and 17806 that have not yet had UI of the LP compressor fan blades:
(1) Within 30 days after the effective date of this AD, perform UI of the LP compressor fan blades for cracks.
(2) Use Part 1 of RRD Service Bulletin (SB) No. TAY-72-1591, dated May 8, 2003, to do the inspection.
For Tay 650-15 and Tay 651-54 engines, whenever LP compressor fan blades are removed and are being installed in a different engine:
(1) Perform UI of the LP compressor fan blades for cracks.
(2) Use Part 1 of RRD SB No. TAY-72-1442, Revision 3, dated November 26, 2003, to do the inspection.
Perform UI of the LP compressor fan blades for cracks, using Part 2 of RRD SB No. TAY-72-1442, Revision 3, dated November 26, 2003, at the following:
(1) For Tay 650-15 and Tay 651-54 engines:
(i) Initial UI at next shop visit for any reason but no later than 6 months after the effective date of this AD, whichever occurs first.
(ii) Repetitive UIs at every engine shop visit for any reason but before reaching every 10,000 flight hours-since-last fan blade UI, whichever occurs first.
(2) For Tay 611-8 and Tay 620-15 engines:
(i) Initial UI at next shop visit for engine mid-life inspection or overhaul, but no later than 12 months after the effective date of this AD, whichever occurs first.
(ii) For Tay 611-8 engines, repetitive UIs before reaching every 8,000 flight hours but no later than every 10 years since-last-fan-blade UI, whichever occurs first.
(iii) For Tay 620-15 engines, repetitive UIs before reaching every 10,000 flight hours but no later than every 10 years since-last-fan-blade UI, whichever occurs first.
(i) If any LP compressor fan blade is cracked, then remove the complete LP compressor fan blade set and the LP compressor fan disc from service.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Engines
