KEEL BEAM BLOWOUT PANEL - REMOVAL/INSTALLATION
1. General
A. The blowout panel of the keel beam is on the centerline of the airplane, forward of the main wheel
well. The function of the panel is to release the pressure that is too high in the keel beam because of
a broken APU duct. The panel is hinged and will blow open when special attach rivets are sheared.
The panel has a deflector to keep the panel open in flight. Decals give the replacement rivets.
TASK 53-12-11-400-801
2. Keel Beam Blowout Panel Installation
A. References
Reference Title
20-30-92-910-801 Final Cleaning Prior to General Sealing (Series 92) (P/B 201)
51-31-00-160-801 Prepare For Sealing (P/B 201)
B. Tools/Equipment
Reference Description
STD-810
Spatula - Fillet Smoothing, Hardwood or Plastic
C. Consumable Materials
Reference Description Specification
A00247 Sealant - Pressure And Environmental -
Chromate Type
BMS5-95
B01012 Solvent - Final Cleaning Prior To General
Sealing - Series 92
D. Location Zones
Zone Area
129 Keel Beam (Part) Body Station 501.70 to Body Station 540.00
E. Prepare for the Installation
SUBTASK 53-12-11-160-002
(1) Clean the unwanted material where it is necessary.
SUBTASK 53-12-11-110-001
WARNING
DO NOT GET SOLVENTS IN YOUR MOUTH, OR YOUR EYES, OR ON YOUR
SKIN. DO NOT BREATHE THE FUMES FROM SOLVENTS. SOLVENTS ARE
HAZARDOUS MATERIALS. REFER TO PRODUCT MATERIAL SAFETY DATA
SHEETS (MSDS) AND LOCAL REQUIREMENTS FOR PROPER HANDLING
PROCEDURES.
(2) Remove and clean the sealant that remains from the mating surfaces with a hardwood or
plastic fillet smoothing spatula, STD-810.
SUBTASK 53-12-11-110-002
(3) Clean the area with Series 92 solvent, B01012 (TASK 20-30-92-910-801).
SUBTASK 53-12-11-210-001
(4) Apply the parting agent to external faces of the fairing mating surface
(TASK 51-31-00-160-801).
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
53-12-11
Page 401
D633A101-ILF Oct 15/2017
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
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