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UNITEDSTATES
SECURITIESANDEXCHANGECOMMISSION
Washington,D.C.20549

FORM N-Q

QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED
MANAGEMENT INVESTMENT COMPANY

Investment Company Act file number 811-07136

Name of Fund: BlackRock MuniYield Pennsylvania Quality Fund (MPA)

Fund Address: 100 Bellevue Parkway, Wilmington, DE 19809

Name and address of agent for service: John M. Perlowski, Chief Executive Officer, BlackRock
MuniYield Pennsylvania Quality Fund, 55 East 52nd Street, New York, NY 10055

Registrant’s telephone number, including area code: (800) 882-0052, Option 4

Date of fiscal year end: 07/31/2011

Date of reporting period: 04/30/2011

Item 1 – Schedule of Investments



BlackRock MuniYield Pennsylvania Quality Fund (MPA)
Schedule of Investments April 30, 2011 (Unaudited)
(Percentages shown are based on Net Assets)

    Par   
Municipal Bonds    (000)  Value 
Pennsylvania — 112.6%       
Corporate — 8.5%       
Beaver County IDA, Refunding RB,       
FirstEnergy, Mandatory Put Bonds,     
3.38%, 1/01/35 (a)  $ 1,200  $ 1,168,692 
Delaware County IDA Pennsylvania, RB,     
Pennsylvania Suburban Water Co.       
Project, Series A, AMT (AMBAC),       
5.15%, 9/01/32    5,500  5,367,450 
Delaware County IDA Pennsylvania,       
Refunding RB, Water Facilities, Aqua     
Pennsylvania Inc. Project, Series B,     
AMT (NPFGC), 5.00%, 11/01/36    2,520  2,361,416 
Northumberland County IDA, Refunding     
RB, Aqua Pennsylvania Inc. Project,     
AMT (NPFGC), 5.05%, 10/01/39    4,500  4,119,975 
Pennsylvania Economic Development     
Financing Authority, RB, Waste       
Management Inc. Project, Series A,     
AMT, 5.10%, 10/01/27    1,200  1,134,336 
      14,151,869 
County/City/Special District/School District — 41.4%   
Chambersburg Area School District, GO     
(NPFGC):       
5.25%, 3/01/26    2,115  2,191,944 
5.25%, 3/01/27    2,500  2,578,975 
City of Philadelphia Pennsylvania, GO,     
Refunding, Series A (AGM), 5.25%,     
12/15/32    7,000  7,008,680 
Connellsville Area School District, GO,     
Series B (AGM), 5.00%, 11/15/37    1,000  989,820 
County of York Pennsylvania, GO,       
5.00%, 3/01/36    400  402,944 
Delaware Valley Regional Financial       
Authority, RB, Series A (AMBAC),       
5.50%, 8/01/28    2,230  2,249,624 
East Stroudsburg Area School District,     
GO, Series A (NPFGC), 7.75%,       
9/01/27    2,000  2,376,680 
Erie County Conventional Center       
Authority, RB (NPFGC), 5.00%,       
1/15/36    8,850  8,485,911 
Marple Newtown School District, GO       
(AGM), 5.00%, 6/01/31    3,500  3,579,275 
Northeastern School District York       
County, GO, Series B (NPFGC), 5.00%,     
4/01/32    1,585  1,596,238 

 

    Par   
Municipal Bonds    (000)  Value 
Pennsylvania (continued)       
County/City/Special District/School       
District (concluded)       
Philadelphia Redevelopment Authority,     
RB (NPFGC):       
Neighborhood Transformation,       
Series A, 5.50%, 4/15/22  $ 1,750 $ 1,788,010 
Quality Redevelopment       
Neighborhood, Series B, AMT,       
5.00%, 4/15/27    4,645  4,348,649 
Philadelphia School District, GO,       
Refunding, Series A (BHAC), 5.00%,     
6/01/34    1,000  985,290 
Philadelphia School District, GO:       
Series B (FGIC), 5.63%, 8/01/12 (b)  7,500  7,983,975 
Series E, 6.00%, 9/01/38    4,800  4,960,464 
Reading School District, GO (AGM),       
5.00%, 1/15/29    6,000  6,112,920 
Scranton School District Pennsylvania,     
GO, Series A (AGM), 5.00%, 7/15/38  3,500  3,511,620 
Shaler Area School District       
Pennsylvania, GO, CAB (Syncora),       
4.81%, 9/01/30 (c)    6,145  2,073,999 
Township of North Londonderry       
Pennsylvania, GO (AGM), 4.75%,       
9/01/40    4,360  4,366,496 
York City School District, GO, Series A     
(Syncora), 5.25%, 6/01/22    1,040  1,097,231 
      68,688,745 
Education — 7.6%       
Adams County IDA, Refunding RB,       
Gettysburg College, 5.00%, 8/15/26  100  102,458 
Pennsylvania Higher Educational       
Facilities Authority, RB (NPFGC):       
Drexel University, Series A, 5.00%,     
5/01/37    2,250  2,095,335 
Series AE, 4.75%, 6/15/32    8,845  8,597,429 
Pennsylvania Higher Educational       
Facilities Authority, Refunding RB,       
State System of Higher Education,       
Series AL, 5.00%, 6/15/35    1,780  1,782,474 
      12,577,696 
Health — 16.9%       
Allegheny County Hospital Development     
Authority, RB, Health Center, UPMC     
Health, Series B (NPFGC), 6.00%,       
7/01/26    2,000  2,183,940 

 

Portfolio Abbreviations     
To simplify the listings of portfolio holdings in the Schedule of Investments, the names and descriptions of many of the securities have been abbreviated 
according to the following list:     
AGC  Assured Guaranty Corp.  GO  General Obligation Bonds 
AGM  Assured Guaranty Municipal Corp.  HFA  Housing Finance Agency 
AMBAC  American Municipal Bond Assurance Corp.  IDA  Industrial Development Authority 
AMT  Alternative Minimum Tax (subject to)  LRB  Lease Revenue Bonds 
BHAC  Berkshire Hathaway Assurance Corp.  NPFGC  National Public Finance Guarantee Corp. 
CAB  Capital Appreciation Bonds  RB  Revenue Bonds 
FGIC  Financial Guaranty Insurance Co.  S/F  Single-Family 
FHA  Federal Housing Administration     

 

BLACKROCK MUNIYIELD PENNSYLVANIA QUALITY FUND  APRIL 30, 2011  1 

 



BlackRock MuniYield Pennsylvania Quality Fund (MPA)
Schedule of Investments (continued)
(Percentages shown are based on Net Assets)

    Par   
Municipal Bonds    (000)  Value 
Pennsylvania (continued)       
Health (concluded)       
Centre County Hospital Authority, RB,     
Mount Nittany Medical Center       
Project (d):       
6.25%, 11/15/41  $ 620 $ 607,563 
7.00%, 11/15/46    2,020  2,109,930 
County of Lehigh Pennsylvania, RB,       
Lehigh Valley Health Network,       
Series A (AGM), 5.00%, 7/01/33    7,995  7,613,638 
Cumberland County Municipal Authority,     
RB, Diakon Lutheran, 6.38%,       
1/01/39    500  486,340 
Lycoming County Authority, Refunding     
RB, Susquehanna Health System       
Project, Series A, 5.75%, 7/01/39    1,160  1,042,620 
Monroe County Hospital Authority       
Pennsylvania, Refunding RB, Hospital,     
Pocono Medical Center, 5.13%,       
1/01/37    1,265  1,117,843 
Montgomery County Higher Education &     
Health Authority, Refunding RB,       
Abington Memorial Hospital, Series A,     
5.13%, 6/01/33    1,760  1,648,346 
Montgomery County IDA Pennsylvania,     
RB:       
Acts Retirement Life Community,     
Series A, 4.50%, 11/15/36    295  220,754 
Acts Retirement Life Community,     
Series A-1, 6.25%, 11/15/29    235  237,935 
New Regional Medical Center       
Project (FHA), 5.38%, 8/01/38    1,600  1,605,072 
Pennsylvania Higher Educational       
Facilities Authority, RB, University of     
Pennsylvania Health System, 5.75%,     
8/15/41    3,025  3,036,374 
Philadelphia Hospitals & Higher       
Education Facilities Authority,       
Refunding RB, Presbyterian Medical     
Center, 6.65%, 12/01/19 (e)    3,000  3,665,610 
Sayre Health Care Facilities Authority,     
Refunding RB, Guthrie Health,       
Series A, 5.88%, 12/01/31    590  592,490 
South Fork Municipal Authority,       
Refunding RB, Conemaugh Valley       
Memorial, Series B (AGC), 5.38%,       
7/01/35    2,000  1,917,640 
      28,086,095 
Housing — 2.7%       
Pennsylvania HFA, Refunding RB, AMT:     
S/F Mortgage, Series 92-A, 4.75%,     
4/01/31    710  653,257 
Series 99A, 5.15%, 4/01/38    800  766,280 
Philadelphia New Public Housing       
Authority, RB, Series A (AGM), 5.50%,     
12/01/18    3,000  3,155,490 
      4,575,027 
State — 6.2%       
Pennsylvania Turnpike Commission, RB,     
Series C of 2003 Pennsylvania       
Turnpike (NPFGC), 5.00%, 12/01/32  3,600  3,629,232 

 

    Par   
Municipal Bonds    (000)  Value 
Pennsylvania (continued)       
State (concluded)       
State Public School Building Authority,     
RB, CAB, Corry Area School District     
(AGM) (c):       
4.85%, 12/15/22  $ 1,640 $ 963,270 
4.87%, 12/15/23    1,980  1,084,010 
4.89%, 12/15/24    1,980  1,015,661 
4.92%, 12/15/25    1,770  849,848 
State Public School Building Authority,     
Refunding RB:       
Harrisburg School District Project,     
Series A (AGC), 5.00%, 11/15/33  1,200  1,206,288 
School District of Philadelphia       
Project, Series B (AGM), 5.00%,       
6/01/26    1,500  1,531,440 
      10,279,749 
Transportation — 13.5%       
City of Philadelphia Pennsylvania, RB,     
Series A, 5.00%, 6/15/40    1,500  1,424,970 
Delaware River Port Authority, RB,       
Series D (AGC), 5.00%, 1/01/40    1,560  1,534,213 
Pennsylvania Turnpike Commission, RB:     
Series A (AMBAC), 5.50%,       
12/01/31    7,800  7,877,844 
Series A (AMBAC), 5.25%,       
12/01/32    350  350,322 
Sub-Series B (AGM), 5.25%,       
6/01/39    3,500  3,454,255 
Philadelphia Authority for Industrial       
Development, Refunding RB,       
Philadelphia Airport System Project,     
Series A, AMT (NPFGC):       
5.50%, 7/01/17    4,000  4,062,080 
5.50%, 7/01/18    3,655  3,713,041 
      22,416,725 
Utilities — 15.8%       
Allegheny County Sanitation Authority,     
Refunding RB, Series A (NPFGC),       
5.00%, 12/01/30    5,000  5,005,850 
City of Philadelphia Pennsylvania, RB:     
1998 General Ordinance, Fourth     
Series (AGM), 5.00%, 8/01/32    4,500  4,452,030 
Ninth Series, 5.25%, 8/01/40    1,430  1,315,957 
Series A, 5.25%, 1/01/36    700  684,789 
Series C (AGM), 5.00%, 8/01/40  3,000  2,901,330 
Northampton Boro Municipal Authority,     
RB (NPFGC), 5.00%, 5/15/34    935  935,234 
Pennsylvania Economic Development     
Financing Authority, RB, Philadelphia     
Biosolids Facility, 6.25%, 1/01/32  900  905,283 
Pennsylvania IDA, Refunding RB,       
Economic Development (AMBAC),       
5.50%, 7/01/20    7,000  7,229,950 

 

2 BLACKROCK MUNIYIELD PENNSYLVANIA QUALITY FUND  APRIL 30, 2011 

 



BlackRock MuniYield Pennsylvania Quality Fund (MPA)
Schedule of Investments (continued)
(Percentages shown are based on Net Assets)

    Par   
Municipal Bonds    (000)  Value 
Pennsylvania (concluded)       
Utilities (concluded)       
Reading Area Water Authority       
Pennsylvania, RB (AGM), 5.00%,       
12/01/27  $ 2,680  $ 2,752,012 
      26,182,435 
Total Municipal Bonds in Pennsylvania    186,958,341 
Guam — 2.4%       
County/City/Special District/School District — 0.5%   
Territory of Guam, RB, Section 30,       
Series A, 5.63%, 12/01/29    805  781,929 
Transportation — 1.4%       
Guam International Airport Authority,       
Refunding RB, General, Series C, AMT     
(NPFGC), 5.00%, 10/01/23    2,500  2,395,600 
Utilities — 0.5%       
Guam Power Authority, Refunding RB,     
Series A (AGM), 5.00%, 10/01/37    850  766,011 
Total Municipal Bonds in Guam      3,943,540 
Puerto Rico — 0.7%       
State — 0.7%       
Commonwealth of Puerto Rico, GO,       
Refunding, Public Improvement,       
Series A-4 (AGM), 5.25%, 7/01/30  1,270  1,239,914 
Total Municipal Bonds – 115.7%      192,141,795 
Municipal Bonds Transferred to Tender     
Option Bond Trusts (f)       
Pennsylvania — 42.5%       
County/City/Special District/School District — 4.4%   
East Stroudsburg Area School District,     
GO, Refunding (AGM), 5.00%,       
9/01/25    7,000  7,329,490 
Education — 1.4%       
University of Pittsburgh Pennsylvania,     
RB, Capital Project, Series B, 5.00%,     
9/15/28    2,202  2,326,426 
Health — 3.2%       
Geisinger Authority, RB, Series A:       
5.13%, 6/01/34    2,500  2,435,500 
5.25%, 6/01/39    3,000  2,960,790 
      5,396,290 
Housing — 1.6%       
Pennsylvania HFA, Refunding RB,       
Series 96-A, AMT, 4.70%, 10/01/37  2,970  2,664,476 
State — 27.9%       
Commonwealth of Pennsylvania, GO,     
First Series, 5.00%, 3/15/28    5,203  5,504,978 
Pennsylvania Turnpike Commission, RB,     
Series C of 2003 Pennsylvania       
Turnpike (NPFGC), 5.00%, 12/01/32  10,000  10,081,200 
State Public School Building Authority,     
LRB, Philadelphia School District       
Project (AGM), 5.25%, 6/01/13 (b)  15,000  16,403,850 

 

Municipal Bonds Transferred to Tender  Par   
Option Bond Trusts (f)  (000)  Value 
Pennsylvania (concluded)     
State (concluded)     
State Public School Building Authority,     
Refunding RB, School District of     
Philadelphia Project, Series B (AGM),     
5.00%, 6/01/26  $ 14,026  $ 14,320,239 
    46,310,267 
Transportation — 4.0%     
City of Philadelphia Pennsylvania, RB,     
Series A, AMT (AGM), 5.00%, 6/15/37  7,500  6,624,000 
Total Municipal Bonds Transferred to     
Tender Option Bond Trusts – 42.5%    70,650,949 
Total Long-Term Investments     
(Cost – $264,717,456) – 158.2%    262,792,744 
Short-Term Securities  Shares   
BIF Pennsylvania Municipal Money     
Fund, 0.00% (g)(h)  5,263,599  5,263,599 
Total Short-Term Securities     
(Cost – $5,263,599) – 3.2%    5,263,599 
Total Investments     
(Cost – $269,981,055*) – 161.4%    268,056,343 
Other Assets Less Liabilities – 0.2%    354,094 
Liability for Trust Certificates, Including Interest   
Expense and Fees Payable – (21.7)%    (35,973,010) 
Preferred Shares, at Redemption Value – (39.9)%  (66,354,490) 
Net Assets Applicable to Common Shares – 100.0%  $ 166,082,937 


* The cost and unrealized appreciation (depreciation) of investments as of

April 30, 2011, as computed for federal income tax purposes, were as
follows:

Aggregate cost  $ 234,038,753 
Gross unrealized appreciation  $     4,038,885 
Gross unrealized depreciation  (5,952,746) 
Net unrealized depreciation  $    (1,913,861)


(a) Variable rate security. Rate shown is as of report date.

(b) US government securities, held in escrow, are used to pay interest on this
security as well as to retire the bond in full at the date indicated, typically
at a premium to par.
(c) Represents a zero-coupon bond. Rate shown reflects the current yield as
of report date.
(d) When-issued security. Unsettled when-issued transactions were as
follows:

    Unrealized 
Counterparty  Value  Appreciation 
Merrill Lynch & Co.  $ 2,717,493  $ 20,305 


(e) Security is collateralized by Municipal or US Treasury obligations.

(f) Securities represent bonds transferred to a tender option bond trust in
exchange for which the Fund acquired residual interest certificates.
These securities serve as collateral in a financing transaction.

BLACKROCK MUNIYIELD PENNSYLVANIA QUALITY FUND  APRIL 30, 2011  3 

 



BlackRock MuniYield Pennsylvania Quality Fund (MPA)
Schedule of Investments (continued)

(g) Investments in companies considered to be an affiliate of the Fund
during the period, for purposes of Section 2(a)(3) of the Investment
Company Act of 1940, as amended, were as follows:

  Shares    Shares   
  Held at    Held at   
  July 31,  Net  April 30,   
Affiliate  2010  Activity  2011  Income 
BIF         
Pennsylvania         
Municipal         
Money Fund  8,508,134  (3,244,535)  5,263,599  $ -- 


(h) Represents the current yield as of report date.


For Fund compliance purposes, the Fund’s sector classifications refer to
any one or more of the sector sub-classifications used by one or more
widely recognized market indexes or ratings group indexes, and/or as
defined by Fund management. This definition may not apply for purposes
of this report, which may combine sector sub-classifications for reporting
ease.

  Financial futures contracts sold as of April 30, 2011 were as follows:       
  Contracts  Issue  Exchange  Expiration  Notional  Unrealized 
          Value  Depreciation 
  57  10-Year U.S. Treasury Note  Chicago Board of Trade  June 2011  $ 6,755,282  $ (149,733) 


•Fair Value Measurements — Various inputs are used in determining the fair

value of investments and derivative financial instruments. These inputs
are summarized in three broad levels for financial reporting purposes as
follows:

•Level 1 — price quotations in active markets/exchanges for identical
assets and liabilities

•Level 2 — other observable inputs (including, but not limited to: quoted
prices for similar assets or liabilities in markets that are active, quoted
prices for identical or similar assets or liabilities in markets that are not
active, inputs other than quoted prices that are observable for the
assets or liabilities (such as interest rates, yield curves, volatilities,
prepayment speeds, loss severities, credit risks and default rates) or
other market-corroborated inputs)

•Level 3 — unobservable inputs based on the best information available
in the circumstances, to the extent observable inputs are not available
(including the Fund's own assumptions used in determining the fair
value of investments and derivative financial instruments)

The inputs or methodologies used for valuing securities are not necessarily
an indication of the risk associated with investing in those securities. For
information about the Fund's policy regarding valuation of investments and
derivative financial instruments and other significant accounting policies,
please refer to the Fund’s most recent financial statements as contained in
its semi-annual report.

4 BLACKROCK MUNIYIELD PENNSYLVANIA QUALITY FUND  APRIL 30, 2011 

 



BlackRock MuniYield Pennsylvania Quality Fund (MPA)
Schedule of Investments (concluded)

The following tables summarize the inputs used as of April 30, 2011 in
determining the fair valuation of the Fund's investments and derivative
financial instruments:

Valuation Inputs  Level 1  Level 2  Level 3  Total 
Assets:         
Investments:         
Long-Term         
Investments1  —   $262,792,744  $ 262,792,744 
Short-Term         
Securities  $ 5,263,599      5,263,599 
Total  $ 5,263,599 $ 262,792,744  $ 268,056,343 
1 See above Schedule of Investments for values in each sector.   

 

Valuation Inputs  Level 1  Level 2  Level 3  Total 
Derivative Financial Instruments2         
Liabilities:         
Interest rate contracts  $ (149,733)     $ (149,733) 
2Derivative financial instruments are financial futures contracts, which are valued at the 
unrealized appreciation/depreciation on the instrument.     

 

BLACKROCK MUNIYIELD PENNSYLVANIA QUALITY FUND  APRIL 30, 2011  5 

 



Item 2 – Controls and Procedures

2(a) – The registrant's principal executive and principal financial officers or persons performing
similar functions have concluded that the registrant's disclosure controls and procedures (as
defined in Rule 30a-3(c) under the Investment Company Act of 1940, as amended (the
31940 Act3)) areeffective as of a date within 90 days of the filing of this report based on the
evaluation of these controls and procedures required by Rule 30a-3(b) under the 1940 Act
and Rule 13a-15(b) under the Securities Exchange Act of 1934, as amended.

2(b) – There were no changes in the registrant's internal control over financial reporting (as defined
in Rule 30a-3(d) under the 1940 Act) that occurred during the registrant's last fiscal quarter
that have materially affected, or are 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.

BlackRock MuniYield Pennsylvania Quality Fund

By: /S/ John M. Perlowski
John M. Perlowski
Chief Executive Officer of
BlackRock MuniYield Pennsylvania Quality Fund

Date: June 24, 2011

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/ John M. Perlowski
John M. Perlowski
Chief Executive Officer (principal executive officer) of
BlackRock MuniYield Pennsylvania Quality Fund

Date: June 24, 2011

By: /S/ Neal J. Andrews
Neal J. Andrews
Chief Financial Officer (principal financial officer) of
BlackRock MuniYield Pennsylvania Quality Fund

Date: June 24, 2011