B.
Equipment
(1)
Protective mat - Rubber Manufacturer's
Association, Grade SC43, neoprene sponge, 1
inch thick, approximately 5x6 feet with warning
streamers attached (3 are necessary).
C.
References
(1)
AMM 70-31-01/201, Fluorescent Penetrant Inspection
D.
Access
(1)
Location Zone
412 Engine 1 - LPC Hub
422 Engine 2 - LPC Hub
432 Engine 3 - LPC Hub
442 Engine 4 - LPC Hub
E.
Procedure
S 866-058-N00
CAUTION:_______MAKE SURE YOU USE A PROTECTIVE MAT. IF YOU DO NOT, DAMAGE MAY RESULT TO THE INNER SURFACE OF THE INLET COWL.
(1) Put the protective mat on the inner surface of the inlet cowl.
S 236-059-N00
WARNING: TO PREVENT INJURY TO YOUR HANDS, GLOVES SHOULD BE WORN WHEN YOU
_______
HANDLE THE BLADES.
(2)
With ultra high sensitivity penetrant, examine the areas of the blade where you think there are cracks (AMM 70-31-01/201).
(a)
Cracks are not permitted.
S 866-061-N00
(3) If you are done with the fan blade inspections, remove the protective mat from the inlet cowl.
TASK 72-31-02-256-062-N00
8. Eddy Current Inspection of the Leading and Trailing Edges for Cracks.
____________________________________________________________________
A. General
(1) Do this inspection (or the fluorescent penetrant inspection) if you think there are cracks and after you repair damage.
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ALL ú ú N01 Page 617 ú Jun 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
B. Equipment
(1)
Protective mat - Rubber Manufacturer's
Association, Grade SC43, neoprene sponge, 1
inch thick, approximately 5x6 feet with warning
streamers attached (3 are necessary).
(2)
Standard - Crack, PWA 28403
(3)
Probe - Leading Edge, PWA 28404, (Optional to PWA 75909)
(4)
Probe - Trailing Edge, PWA 28443 (Optional to PWA 75909)
(5)
Probe - PWA 75909, Pratt & Whitney Aircraft
(6)
Eddy Current Instrument - Model ED 1500, Magnaflux
Corporation, 7300 W. Lawrence Ave., Chicago, Ill.
60656
(7)
Detectometer - 2.154 or 2.164 Krauthromer - Branson
Inc., 76 Progress Drive, Standford, Conn. 06904 or
Institute Doctor Forster, D-7410 Reutlingen,
Grathwohl STR-4, West Germany (or equivalent)
(8)
Signal Recorder (Optional) - Models 135X, 7034A,
7044, or 680, (International) Hewlett-Packard 3200
Hillview Ave., Palo Alto, CA 94304 or (Domestic)
Hewlett Pa ckard, 1501 Page Hill Road, Palo Alto, CA
94306 (or equivalent)
C.
Consumable Materials
(1)
B00148, Solvent - PMC 9076 Methyl Ethyl Ketone (MEK)
(2)
G02187 Tape - MISC 148 Teflon Adhesive, Type T
(3)
G02188 Cloth, Abrasive - MISC 114, 240 Grit, Aluminum Oxide
D.
References
(1)
AMM 72-31-01/401, Inlet Cone
(2)
AMM 72-31-02/801, LPC 1st-Stage Fan Blades
E.
Access
(1)
Location Zone
412 Engine 1 - LPC Hub
422 Engine 2 - LPC Hub
432 Engine 3 - LPC Hub
442 Engine 4 - LPC Hub
F.
Prepare for the Inspection
S 866-063-N00
CAUTION:_______MAKE SURE YOU USE A PROTECTIVE MAT. IF YOU DO NOT, DAMAGE MAY RESULT TO THE INNER SURFACE OF THE INLET COWL.
(1)
Put the protective mat on the inner surface of the inlet cowl.
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