1) DOCUMENT CHANGE NOTICE (DCN):
DCN No. E1000602-v1


2) INFORMATION:
DOCUMENT No.	TITLE
D1001813-v2:	aLIGO TMS THREAD MT. SEC. FOCUS
D1001832-v2:	aLIGO TMS VERT. SLIDE SEC. BRK.
D1001833-v2:	aLIGO TMS HOR. SLIDE SEC.
D1001834-v2:	aLIGO TMS HOLDER SEC. FOCUS
D1001835-v2:	aLIGO TMS Hor. Thread Mount.
D1001836-v2:	aLIGO TMS Vert Holder Mount.
D1001837-v2:	aLIGO TMS VERTICAL LOCK
D1001839-v2:	aLIGO TMS HOR. LOCK
D1001841-v2:	aLIGO TMS FOCUS SLIDE LOCK
D1001945-v2:	aLIGO TMS DEL-TRON RS1-1 VERTICAL SLIDE
D1001946-v2:	aLIGO TMS DEL-TRON RS1-1 VERTICAL GUIDE
D1001947-v2:	aLIGO TMS DEL-TRON RS1-1 HOR. SLIDE
D1001948-v2:	aLIGO TMS DEL-TRON RS1-1 HOR. GUIDE
D1001952-v2:	aLIGO TMS DEL-TRON RS1-2 FOCUS CARRIAGE
D1001953-v2:	aLIGO TMS DEL-TRON RS1-2 FOCUS GUIDE
D1001973-v2:	aLIGO TMS FOCUS SCREW
D1001987-v2:	aLIGO TMS VERT.-HOR. SCREW
D1002211-v2:	aLIGO TMS FLEXABLE SEC MIRROR MT.
E1000459-v1:	BOM - TMS Telescope Secondary Mirror Mount
E1000616-v1:	BOM - aLIGO TMS Secondary Mirror Mount Assembly


3) CHANGE DESCRIPTION (FROM / TO):
D1001813, D1001832
Revised oversize thread callout to include both drill and tap.
Changed finish spec from 32 microinch to 63 microinch Ra.

D1001833
ZONE 5-A:
Diameter .218 -WAS- .220
Depth .200 -WAS- .330
Changed finish spec from 32 microinch to 63 microinch Ra.

D1001834
Changed finish spec from 32 microinch to 63 microinch Ra.

D1001835 & D1001836
On each part 2 holes, Diameter .150 -WAS- .129.
Changed finish spec from 32 microinch to 63 microinch Ra.

D1001837, D1001839, D1001841
Changed finish spec from STOCK to 32 microinch Ra appended
with flag note 11 (ELECTROPOLISH PER LIGO SPEC E0900364,
SECTION 5.2.2).

D1001945, D1001946
Revised oversize thread callout to include both drill and tap.

D1001947
Revised oversize thread callouts (4-40 & 8-32) to include both
drills and taps.

D1001948
Revised oversize thread callout to include both drill and tap.

D1001952
Revised oversize thread callouts (8-32 & 10-24) to include both
drills and taps.

D1001953
Revised oversize thread callout to include both drill and tap.

D1001973, D1001987
Added flag note 11 (ELECTROPOLISH PER LIGO SPEC E0900364,
SECTION 5.2.2).

D1002211
SHEET 1:
Added note 9 "ALL TAPPED HOLES- USE .005 OVERSIZE DRILLS & TAPS."
Added R.01 MAX fillets to inner corners of both flexure features.
SHEET 3:
Diameter DIM 1.510 +.015/-.000 -WAS- 1.500 +.004/-.000
Diameter DIM 1.46 -WAS- 1.457

E1000459, E1000616
Initial release.

4) REASON FOR CHANGE:
See 3).


5) SIGNATURES REQUESTED:
Ken Mailand
Dennis Coyne


6) DCN DISTRIBUTION:
Ken Mailand
Dennis Coyne


7) NOTES:
DCN# E1000318 and DCN# E1000383 are prerequisite to this DCN.