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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
~...........-...-....-......-..........-......-................................. | TABLE 201 | ................................................................................. | AIRPLANE |REF|FIG.| VIEW | LIMITS | AVG. | LIMIT DEVIATIONS | |EFFECTIVITY|NO.|201 | | | MAX | | ................................................................................. 2...........…...…....…......…..........…......….................................1
TASK 71-11-00-822-003-N00
3. Adjustment - Outer Surface of the Engine Cowling
________________________________________________
A. Access
(1)
Location Zone
412 Engine 1
422 Engine 2
432 Engine 3
442 Engine 4
B.
Procedure
S 212-004-N00
(1) Make sure that the outer surfaces are free from dents, scratches or other damage.
NOTE: Damage of this type can cause the cowling to come loose
____
during a flight.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
PROBE ACCESS DOOR
AE-AE Y-Y
W-W T-T
V
A X Z AA
V X Z AA AB AC AD FAIRING AFT STRUT
R-R BB-BB AB AG
24.4 INTERNAL INCHES AL AK-AK AL AM AGAF AF AC AQ AQ AQ AM AD AH AH THROAT 5 INCHES FROM END
CRITICAL BA AM AM 15 INCHES INTERNAL CRITICAL AREA
AREA AY AY AO AQ AJ AJ PRIMARY NOZZLE
BA AO
10 INCHES INSIDE
A AR AR CRITICAL AREA
FAN COWL AP-AP
INLET COWL
THRUST REVERSER
AIRFLOW AIRFLOW
1
(+) POSITIVE STEP (-) NEGATIVE STEP
Aerodynamic Smoothness Figure 201 (Sheet 1)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
OUTSIDE BODY SKIN SURFACE (EXAMPLE FOR STRAIGHT OR CURVED AREA)
FWD
CONCAVE OR CONVEX
SKIN SMOOTHNESS
THE SKIN SMOOTHNESS IN CRITICAL AND NON-CRITICAL AREAS ALONG CONTINUOUS SKIN SHOULD AGREE WITH THE
WAVE DEPTH -INCHES
LIMITS SHOWN AT RIGHT. (EXAMPLE FOR STRAIGHT OR CURVED AREAS).
WAVE LENGTH - INCHES
(AREAS NOT INCLUDED ARE SHOWN IN SECTION VIEWS) AERODYNAMIC SMOOTHNESS TOLERANCES
CONDITION LOCATION CRITICAL NON-CRITICAL
1 WAVE DEPTH TO LENGTH RATIO ALL SKINS 0.0025 SEE GRAPH
WAVE DEPTH TO LENGTH RATIO 1.0 MAX DIA. DISHING AT FASTENERS AT FASTENERS 0.0050 0.0100
GAPS
2 LONGITUDINAL (STREAMWISE) BUTT JOINT-MAX. GAPS REMOVABLE PANELS 0.060 0.060
HINGED PANELS 0.080 0.080
FIXED SKINS 0.040 0.040
3 BUTT JOINT GAPS TRANSVERSE (NORMAL TO AIRSTREAM) FIXED SKINS 0.00 TO 0.03 0.00 TO +0.06
REMOVABLE & HINGED PANELS 0.01 TO 0.07 +0.01 TO +0.07
FLUSHNESS
4 LONGITUDINAL JOINT FLUSHNESS FIXED SKINS 0.00 TO 0.03 0.00 TO +0.03
REMOVABLE & HINGED PANELS 0.00 TO 0.03 0.00 TO +0.03
5 TRANSVERSE JOINT FLUSHNESS FIXED SKINS -0.02 TO 0.00 -0.03 TO +0.02
REMOVABLE & HINGED PANELS -0.035 TO +0.025 -0.04 TO +0.02
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