(c)
The inner flange T1.
S 356-013-N00
(4) Repair all cracks at the next removal of the turbine exhaust case.
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~.............................................................................. | TABLE 601 | ................................................................................ | | | EXTERIOR SURFACE OF THE TURBINE EXHAUST CASE | | | | CONTINUE-IN-SERVICE LIMITS | | | ..................................................... | CONDITION | | | | | FOUND | | REGULAR | DECREASED | | (FIG. 601) | FLANGE AREA | TIME INSPECTION | TIME INSPECTION | ................................................................................
|Rail Cracks | R and S |1. Radial or circum-|1. Radial or circum-|
|(View B & C)| | ferential cracks up to| ferential cracks up to|
| | | 0.75 inch (19.05 mm) | 1.5 inches (38.1 mm) |
| | | in length are | in length are |
| | | permitted. | permitted. |
| | | | |
| | | | |
| | .....................................................
| | |2. No circumferential or |2. No axial cracks into |
| | | axial cracks in the | the fillet radius |
| | | fillet radius are | are permitted. |
| | | permitted. | |
| | ..........................…..........................
| | |3. Cracks at the same circumferential location on |
| | | adjacent rails are not permitted. |___
| | .....................................................
| | | |4. Single circumferential|
| | | | cracks up to 1.0 inch |
| | | ------| (25.4 mm) that are |
| | | | confined to the fillet|
| | | | radius are permitted. |
................................................................................ |Engine | R and S |1. A single radial crack |1. The following is per- | |Mount, | | in a slot to the rail | mitted to a maximum of| |Ground Hand-| | outside diameter is | 1.0 inch (25.4 mm): a | |ling Mount, | | permitted. | single radial or cir- | |Rail Slots, | | | cumferential crack on | |and Through | | | the inside diameter | |Hole Cracks.| | | side of a slot or | |(View B & D)| | | through hole. | | | ..........................….......................... | | |2. No cracks are permitted from engine mount bush- | | | | ing hole or ground handling bushing holes at the| | | | following o'clock positions: 10:30, 11:30, | | | | 12:30, 1:30, 3:00, and 9:00. | ................................................................................
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72-54-01
ALL ú ú N01 Page 605 ú Oct 10/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
~.............................................................................. | TABLE 601 | ................................................................................ | | | EXTERIOR SURFACE OF THE TURBINE EXHAUST CASE | | | | CONTINUE-IN-SERVICE LIMITS | | | ..................................................... | CONDITION | | | | | FOUND | | REGULAR | DECREASED | | (FIG. 601) | FLANGE AREA | TIME INSPECTION | TIME INSPECTION | ................................................................................ |Radial |P, T, and T1 |1. A radial crack from |1. A radial crack from | |Cracks | | the flange outside | the bolt hole in the | |(View F) | | diameter to the bolt | direction of the fil- | | | | hole is permitted. | let radius is permit- | | | | | ted. | | | ..................................................... | | |2. No radial cracks from |2. No cracks in the | | | | the bolt hole in the | fillet radius are | | | | direction of the fil- | permitted. | | | | let radius are permit-| | | | | ted. | | 2..........................….........................….........................1
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