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~............................................................................... | TABLE 603 | | INSPECTION OF THE VANE PLATFORMS | ................................................................................. | Examine | Damage Limits | Necessary Procedure (AMM 72-33-02/801) | .................................................................................
 |  |  The base section on  |  Repair the vane base immediately  |
 |  |  one side of a crack  |  |
 |  |  in Area A is 0.100  |  |
 |  |  inch (2.540 mm), or  |  |
 |  |  more, above the  |  |
 |  |  section on the other  |  |
 |  |  side of the crack.  |  |
 |  |  |  |

 ................................................................................. | | A crack in the | Repair the vane base immediately | | | structural section of | | | | the vane base makes | | | | the vane loose | | | | more, above the | | | | section on the other | | | | side of the crack. | | | | | | ................................................................................. | | 15 cracks in each mold| No procedure is necessary. | | | | | | | More than 15 cracks in| Remove the vane within 50 hours. | | | one mold | | | | | | | | Cracks in the mold | Remove the vane within 50 hours. | | | with spaces between | | | | the vane base or the | | | | vane | | | | | | | | Cracks in the mold | Remove the vane within 50 hours. | | | that cause damage to | | | | the attachment holes | | | | in the vane bases | | | | | |
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
~............................................................................... | TABLE 603 | | INSPECTION OF THE VANE PLATFORMS | ................................................................................. | Examine | Damage Limits | Necessary Procedure (AMM 72-33-02/801) | .................................................................................
 | Piece of  |  In Area A  |  Repair the vane or base immediately. |
 | the inner  |  |  |
 | diameter or |  |  |
 | outer  |  In the structural  |  Remove the vane within 50 hours.  |
 | diameter  |  section of the base  |  |
 | vane base  |  which makes the vane  |  |
 | that is  |  loose.  |  |
 | missing.  |  |  |

 2.............…........................…........................................1
 E.  Put the Airplane Back to its Usual Condition
 S 416-019-N00 WARNING: OBEY THE INSTRUCTIONS IN THE PROCEDURE TO CLOSE THE THRUST
_______ REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
 (1)  
Close the thrust reversers (AMM 78-31-00/201). S 416-020-N00

 (2)  
Close the core cowl panels (AMM 71-11-06/201). S 416-021-N00

 (3)  
Close the fan cowl panels (AMM 71-11-04/201). S 446-022-N00

 (4)  
Do the activation procedure for the thrust reversers (AMM 78-31-00/201).

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FAN EXIT CASE AND VANE - REPAIRS
________________________________
 1.  General
_______
 A.  This task contains ten procedures to repair the damaged fan exit case and vane assembly.
 (1)  
Patch repair of smaller damage on all areas of the fan exit vanes.

 (2)  
Repair of the engine by removal but not replacement of damaged fan exit vanes. This allows the plane to continue in service.
　
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