or updated allocation plan.
(2) Timing of notification. An allocation plan shall be considered to be approved by HUD if HUD fails to provide the PHA with notification of approval or disapproval of the plan, as required by paragraph (e)(1) of this section, within:
(i) 90 days after the date of submission of an allocation plan that contains comments, as provided in paragraph (c)(2) of this section; or
(ii) 45 days after the date of submission of all other plans, including
(A) Initial plans for which no comments were received;
(B) Updated plans, as provided in paragraph (f) of this section; and
(C) Revised initial plans or revised updated plans, as provided in paragraph (e)(4) of this section.
(3) Approval limited solely to approval of designated housing. HUD's approval of an initial plan or updated allocation plan under this section may not be construed to constitute approval of any request for assistance for major reconstruction of obsolete projects, assistance for development or acquisition of public housing, or assistance under 24 CFR part 890 (supportive housing for persons with disabilities).
(4) Resubmission following disapproval. If HUD disapproves an initial allocation plan, a PHA shall have a period of not less than 45 days or more than 90 days following notification of disapproval as provided in paragraph (e)(2) of this section, to submit amendments to the plan, or to submit a revised plan.
(f) Biennial update of plan —(1) General. Each PHA that owns or operates a public housing project that is designated for occupancy under this part shall update its allocation plan not less than once every two years, from the date of HUD approval of the initial allocation plan. A PHA that wishes to amend or revise its plan later than 90 days after HUD disapproval must begin