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RB 211 Maintenance Scope
B-9
Compressor Rotor IP (Section 1666)
• Detail strip the Rotor. Wash, NDT, inspect and record/embody the following:
− RN 5015 – Cyclic Lives of Critical Group A Components
− RN 5016 – Engine Component Life Limitation Data
− RN 5023 – Inspection/Crack testing of Stage 6 Disc for Corrosion
− OIA 017 – Log Book Cyclic Information
• Inspect all rotor drums and seals.
• Inspect IP compressor stub shaft and curvic coupling for wear.
• Inspect all blades Stage 1 through 7, overhaul process. Incorporate MODs 701, 984, 794. It
is also recommended to incorporate MODs 1044 and 1159.
• Rebuild and balance the rotor assembly as per standard procedure.
03 Module:
Internal Gearbox (Section 1010)
• Detail Strip, Clean and Inspect.
• Embody the following:
− RN 5005 – Acceptance Standard for Bevel and Spur Gears
− RN 5025 – Inspection of Helical Spines
− RN 5034 – Corrosion Acceptance Standard for IP Compressor Rear Stub Shaft
− CTS 1154 – Centrifugal Clutch Carrier Assembly – Spin test
− MOD 1017 – Oil Seals: Kalrez material
− MOD 1161 – Oil Seals: Kalrez material
• Crack test the starting mechanisms.
HS Gearbox Drive Quill and Fittings (Section 1045)
• Detail Strip, Clean and Inspect.
RPM Indicating System HP (Section 1420)
• Detail Strip, Clean and Inspect.
• Embody the following:
− RN 5016 – Engine Component Life Limitation Data, Magnetic Speed Sensor
− OIA 030 – Wire Locking of HP/IP Probes
− OIA 044 – Fitting Procedure of HP Speed Probe LW18358