#	Letters of Interpretation
1	07/06/2006 - 1910.66(b)(2)(ii) - Modification of powered platforms for building maintenance and applicability of IWCA 14.1-2001 and ASME A120.1-2001.
2	07/06/2006 - 1910.66(b)(2)(i) - Modification of powered platforms for building maintenance and applicability of IWCA 14.1-2001 and ASME A120.1-2001.
3	07/06/2006 - 1910.66(b)(2) - Modification of powered platforms for building maintenance and applicability of IWCA 14.1-2001 and ASME A120.1-2001.
4	07/06/2006 - 1910.66(b)(1) - Modification of powered platforms for building maintenance and applicability of IWCA 14.1-2001 and ASME A120.1-2001.
5	07/06/2006 - 1910.66, 1910.66(b)(1), 1910.66(b)(2), 1910.66(b)(2)(i), 1910.66(b)(2)(ii) - Modification of powered platforms for building maintenance and applicability of IWCA 14.1-2001 and ASME A120.1-2001.
6	01/18/2006 - 1910.66(e)(9) - The powered platform standard's emergency action plan requirements do not necessarily require lowering the platform to ground level.
7	01/18/2006 - 1910.66, 1910.66(e)(9) - The powered platform standard's emergency action plan requirements do not necessarily require lowering the platform to ground level.
8	08/10/2000 - 1910.66 - Anchoring 2-point suspension scaffolds;criteria for testing anchorages.
9	10/01/1998 - 1910.66(e)(2) - Powered platforms: Suspension height limits for transportable outriggers.
10	10/01/1998 - 1910.66(f)(3)(ii) - Powered platforms: Suspension height limits for transportable outriggers.
11	06/10/1998 - 1910.66(e)(2)(iii) - Demonstrating equivalency for powered platform tie-in guides.
12	06/10/1998 - 1910.66(e)(2)(i) - Demonstrating equivalency for powered platform tie-in guides.
13	09/04/1996 - 1910.66 - An installation which has permanent davit arms and davit bases, but does not have a powered platform; a rental stage is brought in for maintenance.
14	08/09/1996 - 1910.66 - OSHA's requirement for certification for building roof anchor points & the "Certificate of Regulation Compliance Building" form.
15	07/05/1995 - 1910.66 - Powered platforms for building maintenance.
16	09/23/1993 - 1910.66 - Testing requirements as they apply to powered platform installations permanently dedicated to building maintenance.
17	12/15/1992 - 1910.66 - Powered platforms for building maintenance to "a permanently installed suspended scaffold."
18	06/02/1992 - 1910.66(c) - Tie-in guides for platform stabilization.
19	06/02/1992 - 1910.66(e)(2)(iii) - Tie-in guides for platform stabilization.
20	06/02/1992 - 1910.66(e)(2)(iv) - Tie-in guides for platform stabilization.
21	12/03/1991 - 1910.66 - Powered Platform Installations for Building Maintenance
22	10/01/1991 - 1910.66 - Force factor for fall arrest systems
23	03/07/1991 - 1910.66(f)(3)(i)(C) - Proper wheel radius in manually propelled carriage to comply with 40 pound limit for horizontal force
24	11/15/1990 - 1910.66 - Intermittent stabilization system building anchors and components for powered platforms for exterior building maintenance.
25	12/09/1986 - 1910.66 - Attachment requirements for window washing equipment.
26	07/11/1983 - 1910.66 - Requirements contained in OSHA Instructions STD 1-3.3.
27	06/19/1981 - 1910.66 - A proposed exterior building maintenance program.
28	08/25/1975 - 1910.66(e)(3) - Inspections required for powered platforms for exterior building maintenance.