(2)  
Access Panel
 198GR RAT Compartment

 B.  Procedure
 S 226-003
 (1) Examine the RAT with the wear limits in Figures 601 and 602.
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A

757
MAINTENANCE MANUAL

4  4 
4  4 
ASEE RAM AIR TURBINE (RAT)  10 11  9  2 
6  8  5  3 6  1 
3 

COVER 5
TURBINE 
BLADE 
13  (2 LOCATIONS) 
12 
RAT 
COMPARTMENT 
DOOR 
0.500 
TURBINE 
HUB 
FWD 
TURBINE  HYDRAULIC 
BLADE  PUMP 
0.125 
RAM AIR TURBINE (RAT)  TURBINE BLADES AND HUB 
A  B 

Ram Air Turbine (RAT) Inspection
Figure 601 (Sheet 1)

E03830
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3.000 |0.010 INCHES
7.656 |0.010 INCHES
1.400 |0.010 INCHES
0.600 |0.010 INCHES
THREE OR LESS DENTS THAT ARE SMALLER THAN 0.075 |0.025 INCH DEEP AND 0.500 INCH IN DIAMETER ARE PERMITTED PER COVER, DENTS THAT ARE LARGER THAN 0.100 INCH DEEP AND 0.500 INCH IN DIAMETER ARE NOT PERMITTED.
NICKS ON LEADING AND TRAILING EDGES IN AREA

THAT ARE LARGER THAN 0.005 INCH DEEP AND
0.040 INCH WIDE ARE NOT PERMITTED. SCRATCHES ON THE SURFACES OF AREA

THAT ARE LARGER THAN 0.005 INCH DEEP AND 0.040 INCH WIDE AND 1.500 INCHES LONG ARE NOT PERMITTED.
NICKS AND SCRATCHES IN AREA

THAT ARE LARGER THAN 0.040 INCH DEEP AND 0.080 INCH WIDE ARE NOT PERMITTED.
DENTS THAT ARE MORE THAN 5% OF TURBINE BLADE THICKNESS OR LARGER THAN 0.040 INCH IN AREA

ARE NOT PERMITTED.
NICKS AND DENTS ON LEADING AND TRAILING EDGES IN AREA

THAT ARE MORE THAN 2% OF THE LOCAL

CHORD ARE NOT PERMITTED.
BLADE TIP CORNERS WITH NICKS OR BENDS WHERE DAMAGE IS MORE THAN AREA
BENDS ARE NOT PERMITTED.
BLADE STRAIGHTNESS INSPECTION REQURIEMENTS:
1.
SET A 1" LONG GAUGE BLOCK (HEIGHT AND WIDTH OF BLOCK OPTIONAL) 0.125" IN FROM THE TRAILING EDGE.

2.
USING A 0.062" WIDE FEELER GAGE 0.010" THICK AS NO-GO GAUGE. VERIFY IT CANNOT BE INSERTED BETWEEN THE BLADE AND BLOCKANYWHERE ALONG THE LENGTH OF THE BLADE IN THE REGION DEFINED IN FIGURE 601 .

3.
IF THE FEELER GAGE CAN BE INSERTED, REPLACE THE TURBINE HUB.

Ram Air Turbine (RAT) Inspection
Figure 601 (Sheet 2)

IS NOT PERMITTED.
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