NG驾驶舱电门橡皮帽件号

caucjun · 发表于 2014-9-13 16:57:46

NG驾驶舱电门橡皮帽件号

SUBJECT: FLIGHT DECK P5 OVERHEAD RUBBER SWITCH TIP P/N’S

MODEL: 737

APPLICABILITY: All 737-100 through –900 aircraft

SUMMARY:This service letter provides part numbers for the rubber switch tips used on the P5 flight deck overhead panel.

BACKGROUND:Several operators have requested part number information pertaining to replacement of switch tips on flight deck overhead panels to avoid replacement of the entire switch due to lack ofdetailed part number data.

BOEING ACTION:Boeing has compiled this list of switch tips for most configurations of overhead flight deck panels.Two different tables are attached; one for 737-100 through –500 aircraft, and one for 737-600 through –900 and BBJ aircraft. Two types of switch tips are typically used; a P/N 69-44578-2which is a long and thin tip requiring no adhesive to install, and a P/N 15PA90-6W tip whichrequires removal of the old metalinsert on the switch tip prior to replacement of the metalinsert/rubber tip combination.

SUGGESTED OPERATOR ACTION:Operators are encouraged to use thisService Letter as a reference when replacing switch tips.

The P/N 69-44578-2, which is a long and thin tip, requires no adhesive to install. It isa pressfitswitch tip.

When P/N 15PA90-6W tips are replaced,the following procedure is recommended: Remove of the old metal insert from the threaded toggle-lever by unscrewing the old metal insert. Whentwisting-off the existing insert from the toggle-level, the toggle-lever must be anchored securelytoprohibit any rotation of the toggle-lever. Note that elevating the temperature (~ 400F) of the cured Loctite willsoften the materialand aid in removalofthe metalinsert. Installthe new metal insert/rubber tip assembly using Loctite 222MS or equivalent.

ESTIMATED MANHOURS:

Replacement of a single switch tips isestimated to take 0.1 labor hours.

Boeing warranty remedies are not available for the subject discussed in this service letter.

R. David Reed

For respective Fleet Support Chiefs

SCE:cmm

Original: Dated:

Attachment: Switch Tip part number matrix for 737 Classic and 737NG

P5 Toggle Switch / Tip Table for 737NG

Switch Name	SwitchP/N	Tip P/N
AFT
Dome White	MS24523-21	69-44578-2
Serv. Interphone	MS24523-23	69-44578-2
Hog Ref	64AT22-3D	15PA90-6W

HORZ. T
Runway Turnoff	A3-1080	69-44578-2
Taxi	MS27407-4	69-44578-2
Engine Start	4TL187-12	69-44578-2
APU	111AT25	15PA90-6W
Logo	MS24523-23	69-44578-2
Position	MS24525-21	69-44578-2
Anti Collision	MS24523-23	69-44578-2
Wing	MS24523-23	69-44578-2
Wheel Well	MS24524-23	69-44578-2

VERT. T
Equip. Cooling (SUP., EXH.)	MS24524-23	69-44578-2
NO Smoking	2TL1-10	69-44578-2
Fasten Belts	2TL1-10	69-44578-2

69-37346 (P5-9)
Window Heat "L" (qty 2)	64AT22-3	69-44578-2
Window Heat "R" (qty2)	64AT22-3	69-44578-2
Win. Heat Probe "B"	64AT22-3	69-44578-2
Win. Heat Probe "A"	64AT22-3	69-44578-2
Win. Heat Probe "OVHT"	68AT22-7	69-44578-2

P5 Toggle Switch / Tip Table for 737NG (continued)
69-37335 (P5-2)
Fuel Pumps"L" &"R"	64AT22-3D	15PA90-6W
Fuel Pumps"1" &"2" (2 each)	1TL150-3D	15PA90-6W

69-37314 (P5-4)
Grd. Power &APU Gen's	64AT34-7E	15PA90-6W

69-37344 (P5-28)
VHF Nav &IRS	710AT25-1A	15PA90-6W
Control Panel	64AT22-1A	15PA90-6W

69-37313 (P5-3)
Alt. Flaps "UP" "DOWN"	64AT22-514	69-44578-2
Yaw Damper	26ET61-T	69-44578-2

69-37321 (P5-13)
Crew / Pass Oxy.	62AT22-82	69-44578-2

69-37317 (P5-8)
Hyd. Pumps"A" (qty 2)	1TL150-3D	15PA90-6W
Hyd. Pumps"B" (qty 2)	62TA22-3D	15PA90-6W

69-37319 (P5-10)
L Rercrc.Fan (some-700)	A3-1006	69-44578-2
L Rercrc. Fan (-800,-900)	MS24523-23	69-44578-2
R Recirc. Fan	MS24523-23	69-44578-2
L &R Pack	68AT22-1A	15PA90-6W
Iso. Valve Close	64AT22-1E	15PA90-6W
Bleed 1 &2	66AT22-3D	15PA90-6W
Bleed APU	1TL150-3D	15PA90-6W

69-37320 (P5-11)
Wing Anti-Ice	M39019-01-212	69-44578-2
Eng. Anti-Ice 1 &2	64AT22-3D	15PA90-6W

ysc_cauc · 发表于 2014-9-14 11:16:55

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[B737] NG驾驶舱电门橡皮帽件号

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