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REQUIREMENTS BULLETIN 747-38A2146
ALERT ALERT
ADDITIONAL
SUPPLY HOSE WATER
• SUPPLY LINE
BRACKET INBD
TYPICAL NOTE 1: (VIEW LOOKING AFT)
THIS ILLUSTRATION IS FOR B-B ILLUSTRATIVE PURPOSES. THE 3029650
CONFIGURATION ON YOUR AIRPLANE MIGHT BE DIFFERENT THAN SHOWN.
FIGURE 13: LEFT SIDE FORWARD CARGO COMPARTMENT, POTABLE WATER SYSTEM - WATER
SUPPLY LINE - WATER SPRAY ENVELOPE ASSEMBLY INSTALLATION (SHEET 3 OF 5) Original Issue: August 07, 2024 Export Controlled ECCN: 9E991 747-38A2146 RB See page 1 for details 63 of 155
The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY numbers shown below are the number of parts necessary for each airplane.
More DataQtyIdentificationNameTaskStep If installed on the clamps. (a) --STRAPRemove1
(a)--SCREWRemove / Keep
(a)--NUTRemove / Keep
(a)--WASHERRemove / Keep
(a)--CLAMPRemove / Keep
(b)1417U2603-1015ENVELOPE ASSYInstall (New)2
(c)1417U2603-1015ENVELOPE ASSYCut3
(d)-BMS 5-157, TYPE I, CLASS 2, FORM 1,
GRADE C, COMPOSI-
TION MPEEK TAPEApply
(a)--CLAMPInstall (Kept)4
(a)--WASHERInstall (Kept)
(a)--SCREWInstall (Kept)
(a)--NUTInstall (Kept) If removed from the clamps. (a) -BACS38K2STRAPInstall (New)
(b)1417U2603-1016ENVELOPE ASSYInstall (New)5
(e)1417U2603-1015ENVELOPE ASSYAdjust6
(e)1417U2603-1016ENVELOPE ASSYAdjust
(f)-BMS 5-157, TYPE I, CLASS 2, FORM 1,
GRADE C, COMPOSI-
TION MPEEK TAPEApply7
(a) No part identification or quantity given. The identification or quantity of parts used can be different between the configurations.
(b) It is permitted to locally compress the envelope assembly to make sure that it aligns better with the adjacent surfaces or parts.
(c) Not to exceed 0.50 inch in length in any direction.
(d) Apply tape to the cut edges and/or damaged surfaces of the envelope assembly. Refer to APPENDIX A as an accepted procedure.
(e) Make sure that all fittings and connections are completely inside the envelope assemblies.
FIGURE 13: LEFT SIDE FORWARD CARGO COMPARTMENT, POTABLE WATER SYSTEM - WATER
SUPPLY LINE - WATER SPRAY ENVELOPE ASSEMBLY INSTALLATION (SHEET 4 OF 5) Export Controlled ECCN: 9E991 See page 1 for details Original Issue: August 07, 2024 747-38A2146 RB 64 of 155 REQUIREMENTS BULLETIN 747-38A2146
ALERTALERT
More DataQtyIdentificationNameTaskStep
(f) Apply tape to the inboard and outboard sides of the mating envelope assemblies to close any gaps.
FIGURE 13: LEFT SIDE FORWARD CARGO COMPARTMENT, POTABLE WATER SYSTEM - WATER
SUPPLY LINE - WATER SPRAY ENVELOPE ASSEMBLY INSTALLATION (SHEET 5 OF 5) Export Controlled ECCN: 9E991 See page 1 for details Original Issue: August 07, 2024 747-38A2146 RB 65 of 155 REQUIREMENTS BULLETIN 747-38A2146
ALERTALERT
REQUIREMENTS BULLETIN 747-38A2146
ALERT ALERT This Figure applies only to: Group 7.
STA 660 STA 560
FORWARD CARGO
COMPARTMENT
LOWER SURFACE
WATER DRAIN OF FLOOR BEAMS LINE
STA STA VIS STA STA STA STA 660 650 640 620 600 580 560
WATER DRAIN EQUIPMENT COOLING WATER
LINE SUPPLY AIR INLET SUPPLY LINE FWD NOTE 1: TYPICAL (VIEW LOOKING OUTBOARD)
THIS ILLUSTRATION IS FOR ILLUSTRATIVE PURPOSES. THE A-A
CONFIGURATION ON YOUR AIRPLANE MIGHT BE DIFFERENT THAN SHOWN.
NOTE 2:
POSITION OF THE WATER SUPPLY LINE 3029653
ON YOUR AIRPLANE MIGHT BE DIFFERENT THAN SHOWN.
FIGURE 14: LEFT SIDE FORWARD CARGO COMPARTMENT - POTABLE WATER SYSTEM - WATER
SUPPLY LINE CONDUIT INSTALLATION (SHEET 1 OF 7) Original Issue: August 07, 2024 Export Controlled ECCN: 9E991 747-38A2146 RB See page 1 for details 66 of 155
REQUIREMENTS BULLETIN 747-38A2146
ALERT ALERT
WATER DRAIN LINE WATER SUPPLY LINE
END FITTING SLEEVE
1.00 (MAX)
WATER SUPPLY LINE WATER D€3A€
DRAIN LINE FWD TYPICA (VIEW LOOKING OUTBOARD)
WATER DRAIN LINE
1.00 (MAX) WATER SUPPLY LINE 0030Є
END FITTING SLEEVE WATER DRAIN LINE FWD
TYPICAL (VIEW LOOKING OUTBOARD) 3029654 FIGURE 14: LEFT SIDE FORWARD CARGO COMPARTMENT - POTABLE WATER SYSTEM - WATER
SUPPLY LINE CONDUIT INSTALLATION (SHEET 2 OF 7) Original Issue: August 07, 2024 Export Controlled ECCN: 9E991 747-38A2146 RB See page 1 for details 67 of 155
REQUIREMENTS BULLETIN 747-38A2146
ALERT ALERT D —WATER SUPPLY LINE
0.50
0.50 (MIN) (MIN) SLIT
0.50 (MIN) 0.50 (MIN)
TYPICAL
INBD (STRAP NOT SHOWN)
VIEW LOOKING FORWARD B-B
3.00 0.50 • 12.00 (MAX) D2346
WATER SUPPLY LINE
AFT END OF
CONDUIT
TYPICAI (VIEW LOOKING OUTBOARD) (FORWARD END OF CONDUIT SIMILAR) (AFT END OF CONDUIT SHOWN) 3029655 C-C FIGURE 14: LEFT SIDE FORWARD CARGO COMPARTMENT - POTABLE WATER SYSTEM - WATER
SUPPLY LINE CONDUIT INSTALLATION (SHEET 3 OF 7) Original Issue: August 07, 2024 747-38A2146 RB Export Controlled ECCN: 9E991 See page 1 for details 68 of 155
REQUIREMENTS BULLETIN 747-38A2146
ALERT ALERT WATER SUPPLY LINE DRAIN SLOPE 2.5° (MIN)
• A DIP WHERE
WATER COLLECTS FWD
0.375 (MAX) AN EXAMPLE OF A LOCAL WATER TRAP THAT
CAN OCCUR IN THE WATER SUPPLY LINE (CONDUITS NOT SHOWN) (VIEW LOOKING OUTBOARD)
WATER SUPPLY LINE D-D
WITH CONDUITS
(8) STRAP ® TAPE TAPE ®
WATER DRAIN LINES STRAP 8
WATER DRAIN LINE ® STRAP WATER SUPPLY (8) SPACER
LINE WITH
CONDUITS
ALTERNATIVE (VIEW LOOKING FORWARD) NOTE 2: E-E LINTER DRAIN
POSITION OF THE WATER SUPPLY LINE
ON YOUR AIRPLANE MIGHT BE DIFFERENT THAN SHOWN. INBD NOTE 3:
THIS SUPPORT CONFIGURATION IS FOR ILLUSTRATIVE PURPOSES. THE (VIEW LOOKING FORWARD) ALTERNATIVE
SUPPORT CONFIGURATION ON YOUR F-F AIRPLANE MIGHT BE DIFFERENT THAN 3029656
SHOWN OR THERE IS NO SUPPORT IN YOUR CONFIGURATION.
FIGURE 14: LEFT SIDE FORWARD CARGO COMPARTMENT - POTABLE WATER SYSTEM - WATER
SUPPLY LINE CONDUIT INSTALLATION (SHEET 4 OF 7) Original Issue: August 07, 2024 Export Controlled ECCN: 9E991 747-38A2146 RB See page 1 for details 69 of 155
REQUIREMENTS BULLETIN 747-38A2146
ALERT ALERT
WATER SUPPLY LINE
WITH CONDUITS WATER SUPPLY LINE
WITH CONDUITS TAPE (8 TAPE (8 SPACER 8
WATER DRAIN WATER DRAIN LINE LINE STRAP STRAP (8) STRAP 8
INBD INBD
ALTERNATIVE ALTERNATIVE (VIEW LOOKING FORWARD) (VIEW LOOKING FORWARD)
G-G H-H
STANCHION WATER DRAIN LINE
MOUNTING
SUPPORT
WATER SUPPLY
LINE WITH
CONDUITS L NOTE 2:
POSITION OF THE WATER SUPPLY LINE 8) STRAP
ON YOUR AIRPLANE MIGHT BE DIFFERENT THAN SHOWN. WATER DRAIN LINE NOTE 3: BRACKET
THIS SUPPORT CONFIGURATION IS FOR NBD ILLUSTRATIVE PURPOSES. THE
SUPPORT CONFIGURATION ON YOUR ALTERNATIVE AIRPLANE MIGHT BE DIFFERENT THAN (VIEW LOOKING AFT) 3046316
SHOWN OR THERE IS NO SUPPORT IN YOUR CONFIGURATION.
FIGURE 14: LEFT SIDE FORWARD CARGO COMPARTMENT - POTABLE WATER SYSTEM - WATER
SUPPLY LINE CONDUIT INSTALLATION (SHEET 5 OF 7) Original Issue: August 07, 2024 747-38A2146 RB Export Controlled ECCN: 9E991 See page 1 for details 70 of 155
The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY numbers shown below are the number of parts necessary for each airplane.
More DataQtyIdentificationNameTaskStep -1417U2912-14CONDUITPut / Hold1 -1417U2912-14CONDUITPut / Hold2
(a)2417U2912-14CONDUITMeasure3 Cut at marks.2417U2912-14CONDUITCut -1417U2912-14CONDUITInstall (New)4 -1417U2912-14CONDUITInstall (New)5 Apply at slits.(b)-BMS5-146 TYPE 1, CLASS 1, GRADE A,
1.50 INCH MINIMUM WIDTH FIBERGLASS TAPEApply6
(c)-BACS38K2STRAPInstall (New)7 Make sure conduit assy from steps 4-7 are oriented per view B-B. (c)(d) -BACS38K2STRAPInstall (New)8 This part is also referred to as a 'spacer' and its installation is optional. (e) -CR4HCONNECTOR RINGInstall (New)
(f)2417U2912-14CONDUITAdjust
(g)-BMS5-146 TYPE 1, CLASS 1, GRADE A,
1.00 INCH MINIMUM WIDTH FIBERGLASS TAPEApply
(f)2417U2912-14CONDUITAdjust9
(a) Mark conduits to within maximum 1.00 inch from fitting on FWD and AFT ends of the conduits. It is acceptable for conduits to cover the flex hose end fitting sleeve.
(b) Apply tape in one continuous strip longitudinally. Tape segments can be used provided there is a minimum of 0.50 inch overlap at all tape seams.
(c) Install strap 0.50 - 3.00 inches from both ends of the conduit. Make sure conduit is supported between end straps a maximum of every 12.00 inches with combination of straps and any existing supports.
(d) Use straps to attach the water supply line with the conduits to the mounting supports.
(e) Use an optional spacer between the water supply line with conduits and drain line to prevent a riding condition and water traps, and to keep a minimum 2.50 degree drain slope.
FIGURE 14: LEFT SIDE FORWARD CARGO COMPARTMENT - POTABLE WATER SYSTEM - WATER
SUPPLY LINE CONDUIT INSTALLATION (SHEET 6 OF 7) Export Controlled ECCN: 9E991 See page 1 for details Original Issue: August 07, 2024 747-38A2146 RB 71 of 155 REQUIREMENTS BULLETIN 747-38A2146
ALERTALERT
More DataQtyIdentificationNameTaskStep
(f) Make sure that the conduits are straight, keep a minimum 2.50 degree drain slope and do not have any localized dip in the water supply line not covered by the conduits that could prevent water from draining.
Maximum allowable dip is 0.375 inch. A depth of the dip that is larger than 0.375 inches can cause a water trap and is not permitted. Additional straps and/or supports beyond the conduit ends may be loosened or replaced to adjust supply line. It can be necessary to remove additional sidewall liners up to STA 540 and STA 700.
(g) Apply two layers of tape around each strap. Make sure tape is centered around the strap. Tape is not necessary at locations where the original mounting supports were kept.
FIGURE 14: LEFT SIDE FORWARD CARGO COMPARTMENT - POTABLE WATER SYSTEM - WATER
SUPPLY LINE CONDUIT INSTALLATION (SHEET 7 OF 7) Export Controlled ECCN: 9E991 See page 1 for details Original Issue: August 07, 2024 747-38A2146 RB 72 of 155 REQUIREMENTS BULLETIN 747-38A2146
ALERTALERT
REQUIREMENTS BULLETIN 747-38A2146
ALERT ALERT This Figure applies only to: Group 8, 10.
STA 660 STA 580 N
FORWARD CARGO
COMPARTMENT
STA LOWER SURFACE 660 WATER DRAIN OF FLOOR BEAMS
STA LINE 650 STA STA STA STA 640 620 600 580 \ F
WATER WATER DRAIN FWD EQUIPMENT COOLING
SUPPLY LINE SUPPLY AIR INLET LINE
TYPICAL NOTE 1: (VIEW LOOKING OUTBOARD)
THIS ILLUSTRATION IS FOR A-A ILLUSTRATIVE PURPOSES. THE
CONFIGURATION ON YOUR AIRPLANE MIGHT BE DIFFERENT THAN SHOWN.
NOTE 2:
POSITION OF THE WATER SUPPLY 3029664
LINE ON YOUR AIRPLANE MIGHT BE DIFFERENT THAN SHOWN.
FIGURE 15: LEFT SIDE FORWARD CARGO COMPARTMENT - POTABLE WATER SYSTEM - WATER
SUPPLY LINE CONDUIT INSTALLATION (SHEET 1 OF 7) Original Issue: August 07, 2024 Export Controlled ECCN: 9E991 747-38A2146 RB See page 1 for details 73 of 155
REQUIREMENTS BULLETIN 747-38A2146
ALERT ALERT
WATER DRAIN LINE
1.00 (MAX) WATER SUPPLY LINE 0000G
END FITTING SLEEVE
WATER DRAIN LINE FWD
TYPICAL (VIEW LOOKING OUTBOARD) STA 600
WATER DRAIN LINE WATER SUPPLY LINE END FITTING SLEEVE
1.00 (MAX)
WATER SUPPLY LINE WATER 334€
DRAIN LINE
•WD
TYPICAL (VIEW LOOKING OUTBOARD) 3029666 FIGURE 15: LEFT SIDE FORWARD CARGO COMPARTMENT - POTABLE WATER SYSTEM - WATER
SUPPLY LINE CONDUIT INSTALLATION (SHEET 2 OF 7) Original Issue: August 07, 2024 747-38A2146 RB Export Controlled ECCN: 9E991 See page 1 for details 74 of 155