UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-Q QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY Investment Company Act file number 811-7156 Name of Fund: MuniYield Florida Insured Fund, Inc. Fund Address: P.O. Box 9011 Princeton, NJ 08543-9011 Name and address of agent for service: Robert C. Doll, Jr., Chief Executive Officer, MuniYield Florida Insured Fund, Inc., 800 Scudders Mill Road, Plainsboro, NJ, 08536. Mailing address: P.O. Box 9011, Princeton, NJ, 08543-9011. Registrant's telephone number, including area code: (609) 282-2800 Date of fiscal year end: 10/31/05 Date of reporting period: 05/01/05 - 07/31/05 Item 1 - Schedule of Investments MuniYield Florida Insured Fund Schedule of Investments as of July 31, 2005 (in Thousands) Face Amount Municipal Bonds Value District of $ 1,000 Metropolitan Washington Airports Authority, D.C., Airport System Revenue Bonds, Columbia - 4.9% AMT, Series A, 5.25% due 10/01/2032 (c) $ 1,046 5,000 Metropolitan Washington Airports Authority, D.C., Airport System Revenue Refunding Bonds, AMT, Series A, 5% due 10/01/2035 (h) 5,170 Florida - 132.8% 1,300 Alachua County, Florida, School Board, COP, 5.25% due 7/01/2029 (a) 1,410 700 Boynton Beach, Florida, Utility System Revenue Refunding Bonds, 6.25% due 11/01/2020 (b)(c) 843 5,000 Dade County, Florida, Aviation Revenue Bonds, AMT, Series B, 5.75% due 10/01/2012 (h) 5,122 1,000 Daytona Beach, Florida, Utility System Revenue Refunding Bonds, Series B, 5% due 11/15/2027 (c) 1,051 570 Escambia County, Florida, Health Facilities Authority, Health Facility Revenue Bonds (Florida Health Care Facility Loan), 5.95% due 7/01/2020 (a) 574 500 Escambia County, Florida, Health Facilities Authority, Revenue Refunding Bonds (Ascension Health Credit), Series A-1, 5.75% due 11/15/2009 (a)(i) 554 2,110 First Florida Governmental Financing Commission Revenue Bonds, 5.70% due 7/01/2017 (h) 2,235 1,150 Florida HFA, Housing Revenue Bonds (Brittany Rosemont Apartments), AMT, Series C-1, 6.75% due 8/01/2014 (a) 1,174 625 Florida Housing Finance Corporation, Homeowner Mortgage Revenue Refunding Bonds, AMT, Series 4, 6.25% due 7/01/2022 (f) 639 2,000 Florida State Board of Education, Capital Outlay, GO, Public Education, Series B, 5% due 6/01/2031 (c) 2,096 6,190 Florida State Board of Education, Lottery Revenue Bonds, Series A, 6% due 7/01/2015 (c) 6,981 1,000 Florida State Governmental Utility Authority, Utility Revenue Bonds (Lehigh Utility System), 5.125% due 10/01/2033 (a) 1,058 Portfolio Abbreviations To simplify the listings of MuniYield Florida Insured Fund's portfolio holdings in the Schedule of Investments, we have abbreviated the names of many of the securities according to the list to the right. AMT Alternative Minimum Tax (subject to) COP Certificates of Participation DRIVERS Derivative Inverse Tax-Exempt Receipts GO General Obligation Bonds HFA Housing Finance Agency IDA Industrial Development Authority IDR Industrial Development Revenue Bonds RIB Residual Interest Bonds S/F Single-Family MuniYield Florida Insured Fund Schedule of Investments as of July 31, 2005 (concluded) (in Thousands) Face Amount Municipal Bonds Value Florida $ 1,860 Florida State Turnpike Authority, Turnpike Revenue Bonds (Department of (concluded) Transportation), Series B, 5% due 7/01/2030 $ 1,923 1,000 Fort Pierce, Florida, Redevelopment Agency, Revenue Refunding Bonds, 5% due 5/01/2026 (j) 1,063 3,700 Highlands County, Florida, Health Facilities Authority, Hospital Revenue Bonds (Adventist Health System), Series A, 6% due 11/15/2031 4,021 Hillsborough County, Florida, School Board, COP (h): 6,000 5.375% due 7/01/2009 (i) 6,489 1,000 5% due 7/01/2029 1,051 Jacksonville Electric Authority, Florida, Water and Sewer System Revenue Bonds (h): 2,000 Series A, 5.375% due 10/01/2030 2,065 2,610 Series C, 5.25% due 10/01/2037 2,668 Jacksonville, Florida, Economic Development Commission, Health Care Facilities Revenue Bonds (Mayo Clinic-Jacksonville) (h): 1,000 Series A, 5.50% due 11/15/2036 1,104 750 Series B, 5.50% due 11/15/2036 828 1,140 Jacksonville, Florida, Economic Development Commission, IDR (Metropolitan Parking Solutions Project), 5.50% due 10/01/2030 (l) 1,200 1,455 Jacksonville, Florida, Guaranteed Entitlement Revenue Refunding and Improvement Bonds, 5.25% due 10/01/2032 (c) 1,561 Jacksonville, Florida, Port Authority, Seaport Revenue Bonds, AMT (h): 1,025 5.625% due 11/01/2010 (i) 1,125 1,225 5.625% due 11/01/2026 1,321 2,000 Lakeland, Florida, Electric and Water Revenue Refunding Bonds, Series A, 5% due 10/01/2028 (h) 2,071 1,000 Lee County, Florida, Airport Revenue Bonds, AMT, Series A, 6% due 10/01/2029 (f) 1,107 1,285 Lee County, Florida, Capital Revenue Bonds, 5.25% due 10/01/2023 (a) 1,404 195 Lee County, Florida, HFA, S/F Mortgage Revenue Bonds (Multi-County Program), AMT, Series A, Sub-Series 3, 7.45% due 9/01/2027 (d)(e)(g) 199 2,905 Lee County, Florida, Transportation Facilities Revenue Bonds (Sanibel Bridges and Causeway), Series B, 5% due 10/01/2035 (m) 3,049 1,000 Leesburg, Florida, Capital Improvement Revenue Bonds, 5.25% due 10/01/2034 (c) 1,083 300 Marco Island, Florida, Utility System Revenue Bonds, 5.25% due 10/01/2021 (h) 329 1,000 Martin County, Florida, Utilities System Revenue Bonds, 5.125% due 10/01/2033 (a) 1,058 2,000 Miami Beach, Florida, Water and Sewer Revenue Bonds, 5.75% due 9/01/2025 (a) 2,223 Miami-Dade County, Florida, Aviation Revenue Bonds, AMT, Series A: 7,500 5% due 10/01/2033 (f) 7,718 5,000 (Miami International Airport), 6% due 10/01/2024 (c) 5,543 2,000 Miami-Dade County, Florida, Educational Facilities Authority Revenue Bonds (University of Miami), Series A, 5.75% due 4/01/2029 (a) 2,207 Miami-Dade County, Florida, Expressway Authority, Toll System Revenue Bonds, Series B (c): 1,000 5.25% due 7/01/2027 1,084 2,875 5% due 7/01/2033 3,018 3,480 Miami-Dade County, Florida, Health Facilities Authority, Hospital Revenue Refunding Bonds, DRIVERS, Series 208, 9.87% due 8/15/2017 (a)(k) 4,181 1,655 Miami-Dade County, Florida, IDA, IDR (BAC Funding Corporation Project), Series A, 5.375% due 10/01/2030 (a) 1,796 2,000 Miami-Dade County, Florida, School Board COP, Series A, 5.50% due 10/01/2009 (f)(i) 2,178 1,865 Miami-Dade County, Florida, Solid Waste System Revenue Bonds, 5.25% due 10/01/2030 (h) 2,037 Miami-Dade County, Florida, Subordinate Special Obligation Revenue Bonds, Series A (h): 4,375 5.186%** due 10/01/2031 1,151 5,735 5.201%** due 10/01/2033 1,352 4,765 Orange County, Florida, Educational Facilities Authority, Educational Facilities, Revenue Refunding Bonds (Rollins College Project), 5.50% due 12/01/2032 (a) 5,246 Orange County, Florida, Health Facilities Authority, Hospital Revenue Bonds: 600 (Adventist Health System), 6.25% due 11/15/2024 665 1,835 (Orlando Regional Healthcare), 6% due 12/01/2029 1,996 1,000 Orange County, Florida, Sales Tax Revenue Refunding Bonds, Series A, 5.125% due 1/01/2023 (c) 1,075 6,500 Orange County, Florida, School Board, COP, Series A, 5.25% due 8/01/2023 (h) 6,944 5,330 Orange County, Florida, Tourist Development, Tax Revenue Bonds, 5.50% due 10/01/2032 (a) 5,849 Orlando and Orange County, Florida, Expressway Authority Revenue Bonds, Series B (a): 4,000 5% due 7/01/2030 4,197 5,015 5% due 7/01/2035 5,245 1,530 Osceola County, Florida, Infrastructure Sales Surplus Tax Revenue Bonds, 5.25% due 10/01/2025 (a) 1,648 2,000 Osceola County, Florida, School Board, COP, Series A, 5.25% due 6/01/2027 (a) 2,152 1,100 Osceola County, Florida, Tourist Development Tax Revenue Bonds, Series A, 5.50% due 10/01/2027 (c) 1,214 1,500 Palm Beach County, Florida, Criminal Justice Facilities Revenue Bonds, 7.20% due 6/01/2015 (c) 1,920 2,000 Palm Beach County, Florida, School Board, COP, Refunding, Series D, 5.25% due 8/01/2021 (f) 2,164 Palm Beach County, Florida, School Board, COP, Series A (i): 5,000 6% due 8/01/2010 (c) 5,667 1,500 5.50% due 8/01/2011 (a) 1,679 1,000 Pembroke Pines, Florida, Public Improvement Revenue Bonds, Series A, 5% due 10/01/2034 (a) 1,053 1,000 Polk County, Florida, Utility System Revenue Bonds, 5.25% due 10/01/2022 (c) 1,096 1,055 Port St. Lucie, Florida, Utility Revenue Bonds, 5.25% due 9/01/2024 (h) 1,151 1,400 Saint Johns County, Florida, Sales Tax Revenue Bonds, GO, Series A, 5.25% due 10/01/2031 (a) 1,519 1,000 Saint Lucie, Florida, West Services District, Utility Revenue Bonds, 5.25% due 10/01/2034 (h) 1,090 2,000 South Broward, Florida, Hospital District Revenue Bonds, DRIVERS, Series 337, 8.611% due 5/01/2032 (h)(k) 2,396 1,000 South Lake County, Florida, Hospital District Revenue Bonds (South Lake Hospital Inc.), 5.80% due 10/01/2034 1,048 1,240 Stuart, Florida, Public Utilities Revenue Refunding and Improvement Bonds, 5.25% due 10/01/2024 (c) 1,358 University of Central Florida (UCF) Athletics Association Inc., COP, Series A (c): 2,280 5.25% due 10/01/2034 2,452 1,000 5% due 10/01/2035 1,050 Village Center Community Development District, Florida, Recreational Revenue Bonds, Series A (h): 1,000 5% due 11/01/2032 1,048 1,640 5.375% due 11/01/2034 1,802 1,000 5.125% due 11/01/2036 1,065 Village Center Community Development District, Florida, Utility Revenue Bonds (h): 2,585 5.25% due 10/01/2023 2,804 4,030 5.125% due 10/01/2028 4,292 1,570 Winter Haven, Florida, Utility System Revenue Refunding and Improvement Bonds, 5% due 10/01/2035 (h) 1,661 Illinois - 0.8% 1,000 Chicago, Illinois, O'Hare International Airport, General Airport Revenue Bonds, Third Lien, AMT, Series D, 5% due 1/01/2034 (m) 1,028 Massachusetts - 2.9% 3,500 Massachusetts State School Building Authority, Dedicated Sales Tax Revenue Bonds, Series A, 5% due 8/15/2030 (f) 3,713 New Jersey - 1.7% 2,000 New Jersey EDA, Cigarette Tax Revenue Bonds, 5.50% due 6/15/2024 2,115 Pennsylvania - 1.6% 2,000 Delaware County, Pennsylvania, IDA, Water Facilities Revenue Refunding Bonds (Aqua Pennsylvania Inc. Project), AMT, Series B, 5% due 11/01/2036 (c) 2,072 Texas - 4.4% 1,200 North Harris County, Texas, Regional Water Authority, Senior Lien Revenue Bonds, 5% due 12/15/2032 (h) 1,255 4,190 San Antonio, Texas, Convention Center Hotel Finance Corporation, Contract Revenue Empowerment Zone Bonds, AMT, Series A, 5% due 7/15/2034 (a) 4,328 Puerto Rico - 6.8% 1,970 Puerto Rico Electric Power Authority, Power Revenue Bonds, Series II, 5.375% due 7/01/2019 (h) 2,194 1,000 Puerto Rico Public Buildings Authority, Government Facilities, Revenue Refunding Bonds, Series I, 5% due 7/01/2036 1,040 1,145 Puerto Rico Public Finance Corporation, Commonwealth Appropriation Revenue Bonds, Series E, 5.70% due 2/01/2010 (i) 1,260 3,550 Puerto Rico Public Finance Corporation, Revenue Refunding Bonds, RIB, Series 522X, 8.19% due 8/01/2022 (h)(k) 4,261 Total Municipal Bonds (Cost - $187,502) - 155.9% 198,972 Shares Held Short-Term Securities 1,300 Merrill Lynch Institutional Tax-Exempt Fund (n) 1,300 Total Short-Term Securities (Cost - $1,300) - 1.0% 1,300 Total Investments (Cost - $188,802*) - 156.9% 200,272 Liabilities in Excess of Other Assets - (0.5%) (632) Preferred Shares, at Redemption Value - (56.4%) (72,026) ----------- Net Assets Applicable to Common Shares - 100.0% $ 127,614 =========== * The cost and unrealized appreciation (depreciation) of investments as of July 31, 2005, as computed for federal income tax purposes, were as follows: (in Thousands) Aggregate cost $ 188,817 =============== Gross unrealized appreciation $ 11,611 Gross unrealized depreciation (156) --------------- Net unrealized appreciation $ 11,455 =============== ** Represents a zero coupon bond; the interest rate shown is the effective yield at the time of purchase by the Fund. (a) AMBAC Insured. (b) Escrowed to maturity. (c) FGIC Insured. (d) FHLMC Collateralized. (e) FNMA Collateralized. (f) FSA Insured. (g) GNMA Collateralized. (h) MBIA Insured. (i) Prerefunded. (j) XL Capital Insured. (k) The rate disclosed is that currently in effect. This rate changes periodically and inversely based upon prevailing market rates. (l) ACA Insured. (m) CIFG Insured. (n) Investments in companies considered to be an affiliate of the Fund, for purposes of Section 2(a)(3) of the Investment Company Act of 1940, were as follows: (in Thousands) Net Dividend Affiliate Activity Income Merrill Lynch Institutional Tax-Exempt Fund (3,619) $ 16 Forward interest rate swaps outstanding as of July 31, 2005 were as follows: (in Thousands) Notional Unrealized Amount Appreciation Pay a fixed rate of 3.582% and receive a floating rate based on 1-week USD Bond Market Association rate Broker, JPMorgan Chase Bank Expires August 2015 $7,300 $ 33 Pay a fixed rate of 3.568% and receive a floating rate based on 1-week USD Bond Market Association rate Broker, JPMorgan Chase Bank Expires October 2015 $7,300 55 Pay a fixed rate of 3.647% and receive a floating rate based on 1-week USD Bond Market Association rate Broker, JPMorgan Chase Bank Expires October 2015 $15,000 24 --------- Total $ 112 ========= Item 2 - Controls and Procedures 2(a) - The registrant's certifying officers have reasonably designed such disclosure controls and procedures to ensure material information relating to the registrant is made known to us by others particularly during the period in which this report is being prepared. The registrant's certifying officers have determined that the registrant's disclosure controls and procedures are effective based on our evaluation of these controls and procedures as of a date within 90 days prior to the filing date of this report. 2(b) - There were no changes in the registrant's internal control over financial reporting (as defined in Rule 30a-3(d) under the Act (17 CFR 270.30a-3(d)) that occurred during the last fiscal quarter of the period covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting. Item 3 - Exhibits Certifications - Attached hereto Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. MuniYield Florida Insured Fund, Inc. By: /s/ Robert C. Doll, Jr. ----------------------- Robert C. Doll, Jr., Chief Executive Officer MuniYield Florida Insured Fund, Inc. Date: September 23, 2005 Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated. By: /s/ Robert C. Doll, Jr. ----------------------- Robert C. Doll, Jr., Chief Executive Officer MuniYield Florida Insured Fund, Inc. Date: September 23, 2005 By: /s/ Donald C. Burke ----------------------- Donald C. Burke, Chief Financial Officer MuniYield Florida Insured Fund, Inc. Date: September 23, 2005