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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
L-L L-B2771
1st-Stage (Fan) Blade Leading and Trailing Edge Minimum Thickness Limits Figure 801 (Sheet 3)
H75195
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TRAILING
EDGE
MINIMUM DISTANCE BETWEEN BLEND REPAIRS ON OPPOSITE EDGES MUST NOT BE LESS THAN THE AVERAGE BLADE WIDTH
L-A0616 L-A2318
Minimum Distance Between Blend Repairs on 1st-Stage Blade Figure 802
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
(P/N 52A121, 52A121-001, 53A321, 56A511 AND 56A821)
1.
THE OUTER HALF OF THE BLADE - THE LENGTH OF A BLENDED AREA MUST BE 4 TIMES ITS DEPTH.
2.
THE IMPORTANT AIRFOIL AREA - THE LENGTH OF A BLENDED AREA MUST BE 12 TIMES ITS DEPTH
4. THE INNER HALF OF THE BLADE - THE LENGTH OF A BLENDED AREA MUST BE 6 TIMES ITS DEPTH.
5.
300 INCHES (160.02 mm)
6.
18.500 INCHES (469.9 mm)
7.
22.500 INCHES (571.50 mm)
8. THE LEADING EDGE AT THE PART SPAN SHROUD - THE LENGTH OF A BLENDED AREA MUST BE 12 TIMES ITS DEPTH.
1st-Stage (Fan) Blade Repair
Figure 803 (Sheet 1)
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2
3
7
6
(P/N 54A821, 56A621)
1.
THE OUTER HALF OF THE BLADE - THE LENGTH OF A BLENDED AREA MUST BE 4 TIMES ITS DEPTH.
2.
THE IMPORTANT AIRFOIL AREA - THE LENGTH OF A BLENDED AREA MUST BE 12 TIMES ITS DEPTH
4. THE INNER HALF OF THE BLADE - THE LENGTH OF A BLENDED AREA MUST BE 6 TIMES ITS DEPTH.
5.
6.300 INCHES (160.02 mm)
6.
18.500 INCHES (469.9 mm)
7.
22.850 INCHES (580.390 mm)
8.
THE LEADING EDGE AT THE PART SPAN SHROUD - THE LENGTH OF A BLENDED AREA MUST BE 12 TIMES ITS DEPTH.
1st-Stage (Fan) Blade Repair Figure 803 (Sheet 2)
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
AREA D (VERY IMPORTANT)
(P/N 53A321, 56A511 AND 56A821)
L-B2954 (0896)
Airfoil Damage Limits Figure 804 (Sheet 1)
H75213
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AREA B (VERY IMPORTANT) (4 LOCATIONS)
AREA C
TRAILING
1.00 INCH
(25.40 mm)
(P/N 54A821, 56A621)
L-B2955 (0896)
Airfoil Damage Limits Figure 804 (Sheet 2)
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