NSAR-A

      PAGE  1
000 A000000 04/30/2000
000 C000000 0000891188
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 6.1
000 J000000 A
001 A000000 MUNIYIELD FLORIDA INSURED FUND
001 B000000 811-7156
001 C000000 6092822800
002 A000000 P.O. BOX 9011
002 B000000 PRINCETON
002 C000000 NJ
002 D010000 08543
002 D020000 9011
003  000000 N
004  000000 N
005  000000 N
006  000000 N
007 A000000 N
007 B000000  0
007 C010100  1
007 C010200  2
007 C010300  3
007 C010400  4
007 C010500  5
007 C010600  6
007 C010700  7
007 C010800  8
007 C010900  9
007 C011000 10
008 A000001 FUND ASSET MANAGEMENT, L.P.
008 B000001 A
008 C000001 801-12485
008 D010001 PRINCETON
008 D020001 NJ
008 D030001 08543
008 D040001 9011
011 A000001 MERRILL LYNCH, PIERCE, FENNER & SMITH INC.
011 B000001 8-7221
011 C010001 NEW YORK
011 C020001 NY
011 C030001 10281
011 C040001 1201
012 A000001 THE BANK OF NEW YORK (COMMON)
012 B000001 85-05006
012 C010001 NEW YORK
012 C020001 NY
012 C030001 10286
      PAGE  2
012 A000002 THE BANK OF NEW YORK (PREFERRED)
012 B000002 85-05006
012 C010002 NEW YORK
012 C020002 NY
012 C030002 10286
013 A000001 DELOITTE & TOUCHE LLP
013 B010001 NEW YORK
013 B020001 NY
013 B030001 10281
013 B040001 1008
014 A000001 MLPF&S AND OTHER ML BROKER/DEALER AFFILIATES
014 B000001 8-7221
015 A000001 THE BANK OF NEW YORK
015 B000001 C
015 C010001 NEW YORK
015 C020001 NY
015 C030001 10286
015 E010001 X
015 A000002 BANKERS TRUST COMPANY
015 B000002 S
015 C010002 NEW YORK
015 C020002 NY
015 C030002 10006
015 E010002 X
015 A000003 THE CHASE MANHATTAN BANK
015 B000003 S
015 C010003 NEW YORK
015 C020003 NY
015 C030003 10017
015 E010003 X
015 A000004 CUSTODIAL TRUST CO.
015 B000004 S
015 C010004 NEW YORK
015 C020004 NY
015 C030004 10167
015 E010004 X
015 A000005 MORGAN GUARANTY TRUST CO. OF NEW YORK
015 B000005 S
015 C010005 NEW YORK
015 C020005 NY
015 C030005 10260
015 E010005 X
018  000000 Y
019 A000000 Y
019 B000000  184
019 C000000 MERRILLLYN
020 C000001      0
020 C000002      0
020 C000003      0
020 C000004      0
020 C000005      0
      PAGE  3
020 C000006      0
020 C000007      0
020 C000008      0
020 C000009      0
020 C000010      0
021  000000        0
022 A000001 J.P. MORGAN SECURITIES INC.
022 B000001 13-3224016
022 C000001     20234
022 D000001     34768
022 A000002 MORGAN STANLEY DEAN WITTER & CO.
022 B000002 13-2655998
022 C000002     21676
022 D000002     19037
022 A000003 PAINEWEBBER INCORPORATED
022 B000003 13-2638166
022 C000003     22595
022 D000003     12403
022 A000004 GOLDMAN, SACHS & CO.
022 B000004 13-5108880
022 C000004     17400
022 D000004     14300
022 A000005 LEHMAN BROTHERS INC.
022 B000005 13-2518466
022 C000005     11817
022 D000005      9673
022 A000006 BEAR, STEARNS & CO. INC.
022 B000006 13-3299429
022 C000006      6250
022 D000006      5671
022 A000007 WILLIAM R. HOUGH & CO.
022 B000007 59-2246010
022 C000007      3630
022 D000007      7091
022 A000008 A.G. EDWARDS & SONS, INC.
022 B000008 43-0895447
022 C000008         0
022 D000008      6461
022 A000009 SALOMON SMITH BARNEY INC.
022 B000009 11-2418191
022 C000009      4814
022 D000009       900
022 A000010 DAIN RAUSCHER INCORPORATED
022 B000010 41-0212020
022 C000010      2500
022 D000010         0
023 C000000     111517
023 D000000     113503
024  000000 N
026 A000000 N
026 B000000 Y
      PAGE  4
026 C000000 N
026 D000000 Y
026 E000000 N
026 F000000 N
026 G010000 N
026 G020000 N
026 H000000 N
027  000000 N
045  000000 Y
046  000000 N
047  000000 Y
048  000000  0.500
048 A010000        0
048 A020000 0.000
048 B010000        0
048 B020000 0.000
048 C010000        0
048 C020000 0.000
048 D010000        0
048 D020000 0.000
048 E010000        0
048 E020000 0.000
048 F010000        0
048 F020000 0.000
048 G010000        0
048 G020000 0.000
048 H010000        0
048 H020000 0.000
048 I010000        0
048 I020000 0.000
048 J010000        0
048 J020000 0.000
048 K010000        0
048 K020000 0.000
049  000000 N
050  000000 N
051  000000 N
052  000000 N
053 A000000 N
054 A000000 Y
054 B000000 Y
054 C000000 N
054 D000000 N
054 E000000 N
054 F000000 N
054 G000000 N
054 H000000 Y
054 I000000 N
054 J000000 Y
054 K000000 N
054 L000000 N
      PAGE  5
054 M000000 Y
054 N000000 N
055 A000000 Y
055 B000000 N
056  000000 Y
057  000000 N
058 A000000 N
059  000000 Y
060 A000000 N
060 B000000 N
061  000000        0
062 A000000 Y
062 B000000   0.0
062 C000000   0.0
062 D000000   0.0
062 E000000   3.3
062 F000000   0.0
062 G000000   0.0
062 H000000   0.0
062 I000000   0.0
062 J000000   0.0
062 K000000   0.0
062 L000000   0.0
062 M000000   0.0
062 N000000   0.0
062 O000000  94.6
062 P000000   0.0
062 Q000000   0.0
062 R000000   0.0
063 A000000   0
063 B000000 18.6
064 A000000 Y
064 B000000 N
066 A000000 N
067  000000 N
068 A000000 N
068 B000000 N
069  000000 N
070 A010000 Y
070 A020000 N
070 B010000 N
070 B020000 N
070 C010000 Y
070 C020000 N
070 D010000 N
070 D020000 N
070 E010000 Y
070 E020000 N
070 F010000 N
070 F020000 N
070 G010000 Y
      PAGE  6
070 G020000 N
070 H010000 N
070 H020000 N
070 I010000 N
070 I020000 N
070 J010000 N
070 J020000 N
070 K010000 Y
070 K020000 N
070 L010000 N
070 L020000 N
070 M010000 N
070 M020000 N
070 N010000 N
070 N020000 N
070 O010000 Y
070 O020000 N
070 P010000 Y
070 P020000 N
070 Q010000 N
070 Q020000 N
070 R010000 N
070 R020000 N
071 A000000     60017
071 B000000     65733
071 C000000    173715
071 D000000   35
072 A000000  6
072 B000000     4950
072 C000000        0
072 D000000        0
072 E000000        0
072 F000000      451
072 G000000       41
072 H000000        0
072 I000000       17
072 J000000        5
072 K000000        0
072 L000000       16
072 M000000       14
072 N000000        0
072 O000000        0
072 P000000        0
072 Q000000        0
072 R000000       23
072 S000000       14
072 T000000        0
072 U000000        0
072 V000000        0
072 W000000       93
072 X000000      674
      PAGE  7
072 Y000000        0
072 Z000000     4276
072AA000000     2747
072BB000000      123
072CC010000       55
072CC020000        0
072DD010000     3169
072DD020000        0
072EE000000        0
073 A010000   0.3756
073 A020000   0.0000
073 B000000   0.0000
073 C000000   0.0000
074 A000000       25
074 B000000        0
074 C000000     5900
074 D000000   170166
074 E000000        0
074 F000000        0
074 G000000        0
074 H000000        0
074 I000000        0
074 J000000     7980
074 K000000        0
074 L000000     2407
074 M000000       15
074 N000000   186493
074 O000000     6509
074 P000000       72
074 Q000000        0
074 R010000        0
074 R020000        0
074 R030000        0
074 R040000       83
074 S000000    60000
074 T000000   119829
074 U010000     8437
074 U020000        0
074 V010000    14.20
074 V020000     0.00
074 W000000   0.0000
074 X000000     2359
074 Y000000        0
075 A000000        0
075 B000000   181597
076  000000    13.09
077 A000000 Y
077 O000000 Y
078  000000 N
086 A010000      0
086 A020000      0
      PAGE  8
086 B010000      0
086 B020000      0
086 C010000      0
086 C020000      0
086 D010000      0
086 D020000      0
086 E010000      0
086 E020000      0
086 F010000      0
086 F020000      0
087 A010000 COMMON STOCK
087 A020000 626298103
087 A030000 MFT
087 B010000 PREFERRED STOCK
088 A000000 N
088 B000000 N
088 C000000 N
088 D000000 Y
SIGNATURE   DONALD C. BURKE
TITLE       TREASURER

EX-99.77ORULE10F-3

MUNIYIELD FLORIDA INSURED FUND

FILE # 811-7156

ATTACHMENT 77O

TRADE DATE	DESCRIPTION OF SECURITY	ISSUE SIZE	AMOUNT PURCHASED	MEMBER OF UNDERWRITING SYNDICATE FROM WHOM FUND PURCHASED
11/10/00	School Board of Hillsborough County FL COP 5.375% 07/01/26	$48,860,000.	$6,000,000.	Paine Webber
11/16/00	County of Los Angeles COP Series 2000A 5.25% 11/01/33	$115,390,000.	$9,000,000.	Banc of America
12/19/00	Jacksonville FL Water & Sewer Revenue Bonds 5.30% 10/01/30	$130,000,000.	$2,350,000.	Paine Webber
04/20/01	City of Houston TX Convention & Entertainment Facilities 5.75% 09/01/2	$195,550,000.	$6,000,000.	Lehman Brothers
		$	$