SECTION 1. SHORT TITLE. 
This Act may be cited as the ‘‘Airport and Airway 
Extension Act of 2011, Part IV’’. 
SEC. 2. EXTENSION OF TAXES FUNDING AIRPORT AND AIR-
WAY TRUST FUND. 
(a) FUEL TAXES.—Subparagraph (B) of section 
4081(d)(2) of the Internal Revenue Code of 1986 is 
amended by striking ‘‘July 22, 2011’’ and inserting ‘‘Sep-
tember 16, 2011’’. 
(b) TICKET TAXES.— 
(1) 
PERSONS.—Clause 
(ii) 
of 
section 
4261(j)(1)(A) of the Internal Revenue Code of 1986 
is amended by striking ‘‘July 22, 2011’’ and insert-
ing ‘‘September 16, 2011’’. 
(2) 
PROPERTY.—Clause 
(ii) 
of 
section 
4271(d)(1)(A) of such Code is amended by striking 
‘‘July 22, 2011’’ and inserting ‘‘September 16, 
2011’’. 
(c) EFFECTIVE DATE.—The amendments made by 
this section shall take effect on July 23, 2011. 
SEC. 3. EXTENSION OF AIRPORT AND AIRWAY TRUST FUND 
EXPENDITURE AUTHORITY. 
(a) IN GENERAL.—Paragraph (1) of section 9502(d) 
of the Internal Revenue Code of 1986 is amended— 
(1) by striking ‘‘July 23, 2011’’ and inserting 
‘‘September 17, 2011’’; and
(2) by inserting ‘‘or the Airport and Airway Ex-
tension Act of 2011, Part IV’’ before the semicolon 
at the end of subparagraph (A). 
(b) CONFORMING AMENDMENT.—Paragraph (2) of 
section 9502(e) of such Code is amended by striking ‘‘July 
23, 2011’’ and inserting ‘‘September 17, 2011’’. 
(c) EFFECTIVE DATE.—The amendments made by 
this section shall take effect on July 23, 2011. 
SEC. 4. EXTENSION OF AIRPORT IMPROVEMENT PROGRAM. 
(a) AUTHORIZATION OF APPROPRIATIONS.— 
(1) IN GENERAL.—Section 48103 of title 49, 
United States Code, is amended by striking para-
graph (8) and inserting the following: 
‘‘(8) $3,380,178,082 for the period beginning 
on October 1, 2010, and ending on September 16, 
2011.’’. 
(2) OBLIGATION OF AMOUNTS.—Subject to lim-
itations specified in advance in appropriation Acts, 
sums made available pursuant to the amendment 
made by paragraph (1) may be obligated at any time 
through September 30, 2011, and shall remain avail-
able until expended. 
(b) PROJECT GRANT AUTHORITY.—Section 47104(c) 
of such title is amended by striking ‘‘July 22, 2011,’’ and 
inserting ‘‘September 16, 2011,’’.
SEC. 5. EXTENSION OF EXPIRING AUTHORITIES. 
(a) Section 40117(l)(7) of title 49, United States 
Code, is amended by striking ‘‘July 23, 2011.’’ and insert-
ing ‘‘September 17, 2011.’’. 
(b) Section 44302(f)(1) of such title is amended— 
(1) by striking ‘‘July 22, 2011,’’ and inserting 
‘‘September 16, 2011,’’; and 
(2) by striking ‘‘October 31, 2011,’’ and insert-
ing ‘‘December 31, 2011,’’. 
(c) Section 44303(b) of such title is amended by 
striking ‘‘October 31, 2011,’’ and inserting ‘‘December 31, 
2011,’’. 
(d) Section 47107(s)(3) of such title is amended by 
striking ‘‘July 23, 2011.’’ and inserting ‘‘September 17, 
2011.’’. 
(e) Section 47115(j) of such title is amended by strik-
ing ‘‘July 23, 2011,’’ and inserting ‘‘September 17, 
2011,’’. 
(f) Section 47141(f) of such title is amended by strik-
ing ‘‘July 22, 2011.’’ and inserting ‘‘September 16, 
2011.’’. 
(g) Section 49108 of such title is amended by striking 
‘‘July 22, 2011,’’ and inserting ‘‘September 16, 2011,’’. 
(h) Section 161 of the Vision 100—Century of Avia-
tion Reauthorization Act (49 U.S.C. 47109 note) is
amended by striking ‘‘July 23, 2011,’’ and inserting ‘‘Sep-
tember 17, 2011,’’. 
(i) Section 186(d) of such Act (117 Stat. 2518) is 
amended by striking ‘‘July 23, 2011,’’ and inserting ‘‘Sep-
tember 17, 2011,’’. 
(j) The amendments made by this section shall take 
effect on July 23, 2011. 
SEC. 6. ESSENTIAL AIR SERVICE REFORM. 
(a) IN GENERAL.—Section 41731(a)(1) of title 49, 
United States Code, is amended— 
(1) in subparagraph (A) by redesignating 
clauses (i) through (iii) as subclauses (I) through 
(III), respectively; 
(2) by redesignating subparagraphs (A) and 
(B) as clauses (i) and (ii), respectively; 
(3) in clause (i)(I) (as so redesignated) by in-
serting ‘‘(A)’’ before ‘‘(i)(I)’’; 
(4) in subparagraph (A)(ii) (as so redesig-
nated)— 
(A) by striking ‘‘determined’’ and inserting 
‘‘was determined’’; 
(B) by striking ‘‘Secretary’’ and inserting 
‘‘Secretary of Transportation’’; and 
(C) by striking the period at the end and 
inserting a semicolon; and