2) For all other access panel joints, make sure that the joint misfair is less than or
equal to 0.0400 in. (1.016 mm).
3) If necessary, install shims to the forward panels at fastener locations, no more than
0.040 in. (1.016 mm), bonded to the structure with sealant, A00247.
NOTE: Reducing the positive step will reduce erosion of the access panels.
(b) Measure the gap between the fairing panels.
1) Make sure that the gap between the access panels is 0.1400 in. (3.556 mm)
±0.0600 in. (1.524 mm).
(c) Measure the flushness between the fasteners and the fairing panels.
1) Make sure that the fasteners are flush to the fairing panel between 0.005 in.
(0.127 mm) and -0.010 in. (-0.254 mm).
SUBTASK 53-51-21-910-003
CAUTION
DO NOT APPLY SEALANT BETWEEN THE FAIRING PANELS. STRUCTURAL
DAMAGE TO THE FAIRING PANELS CAN RESULT DURING FLIGHT IF YOU
INCORRECTLY APPLY THE SEALANT.
(4) Apply sealant, A02315 to make a fillet seal where the panel touches the fuselage.
NOTE: This makes an aerodynamic and a weather seal.
H. Put the Airplane in Its Usual Condition
SUBTASK 53-51-21-410-001
(1) Connect or install the equipment to the fairing and do an operational test if the equipment was
disconnected or removed:
(a) For the marker beacon antenna, do this task: Marker Beacon Antenna Installation,
TASK 34-32-11-400-801.
(b) For the marker beacon antenna, do this task: Marker Beacon Antenna with Gasket -
Installation, TASK 34-32-11-400-802
(c) For the APU drain mast, do this task: APU Fuel Feed Line Shroud Drain Mast Installation,
TASK 28-25-07-420-801.
END OF TASK
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
53-51-21
Page 428
D633A101-ILF Feb 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
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