CFM LEAP-1A - Walkround Overview.pdf

CFM LEAP-1A Walkaround basic overview 01/03/2017

CFM, CFM56, LEAP and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma (Safran group) and GE. The information in this document is CFM Proprietary Information and is disclosed in confidence. It is the property of CFM International and its parent companies, and shall not be used, disclosed to others or reproduced without the express written consent of CFM. If consent is given for reproduction in whole or in part, this notice shall appear in any such reproduction in whole or in part. The information contained in this document may also be controlled by the U.S. and French export control laws. Unauthorized export or re-export is prohibited.

FRONT SPINNER Paint peeling on front spinner Acceptable per AMM 72-21-40-210-801-A

Visual Inspection of the Front Spinner

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FAN BLADE PLATFORM Painting irregularities Acceptable per AMM 72-21-42-210-801-A

Visual Inspection of the Fan Blade Platform

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FAN BLADE (1/2) Material deposit on the surface Acceptable per AMM 72-21-20-210-802-A Visual

Inspection of the Fan Blade

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FAN BLADE (2/2) Crack / disbonding / tears … Investigate per AMM 72-21-20-210-802-A

Visual Inspection of the Fan Blade

Book of leap fan blades visual findings available 5

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OGV Paint peeling Acceptable per AMM 72-24-20-210-801-A

Visual Inspection of the Outlet Guide Vanes (OGVs)

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ABRADABLE LINER (1/4) Black rubbing marks Acceptable per AMM 72-23-01-210-801-A

Visual Inspection of the Fan Case

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ABRADABLE LINER (2/4) 10 Cracks max on abradable Acceptable per AMM 72-23-01-210-801-A

Visual Inspection of the Fan Case

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ABRADABLE LINER (3/4) Crater & Pitting not showing through carbon Investigate per AMM 72-23-01-210-801-A

Visual Inspection of the Fan Case

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ABRADABLE LINER (4/4) Spots and fills on abradable Acceptable per AMM 72-23-01-210-801-A

Visual Inspection of the Fan Case

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CENTER VENT TUBE Coked and liquid oil presence Acceptable per TSM 71-00-00-810-895-A

Oil or Smoke in the CVT

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FAN DRAIN MAST & CORE DRAIN MAST Drained oil or fuel Investigate per AMM 71-00-00-790-805-A

Fuel or Hydraulic or Oil Leakage Limits

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LTP MODULE (T/R OPENED) Discoloration acceptable per

AMM 72-58-00-210-801-A Visual Inspection of the Low Pressure Turbine (LPT) Rotor and Stator Module AMM 72-59-00-210-801-A Visual Inspection of the Turbine Rear Frame Module

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ASSEMBLY OIL… NOT LEAKAGE Engine oil is fluid and light golden.

Assembly lubricant is sticky and dark brown.

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WARNING Inappropriate use of thrust reverser cowling tooling can lead to:

Oil leakage inside fan cowl area 

Traces on Thrust reverser cowling 

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