assistance for passengers with disabilities in air transportation. Sec. 441. Transparency for disabled passengers. Subtitle C—Small Community Air Service Sec. 451. Essential air service authorization. Sec. 452. Study on essential air service reform. Sec. 453. Air transportation to noneligible places. Sec. 454. Inspector general review of service and oversight of unsubsidized carriers. Sec. 455. Small community air service. Sec. 456. Waivers. Sec. 457. Extension of final order establishing mileage adjustment eligibility. Sec. 458. Reduction in subsidy-per-passenger. Title V—Miscellaneous Sec. 501. Definitions. Sec. 502. Report on air traffic control modernization. Sec. 503. Return on investment report. Sec. 504. Air traffic control operational contingency plans. Sec. 505. 2020 ADS-B Out mandate plan. Sec. 506. Securing aircraft avionics systems. Sec. 507. Human factors. Sec. 508. Programmatic risk management. Sec. 509. Review of FAA strategic cybersecurity plan. Sec. 510. Consolidation and realignment of FAA services and facilities. Sec. 511. FAA review and reform. Sec. 512. Air shows. Sec. 513. Part 91 review, reform, and streamlining. Sec. 514. Aircraft leasing. Sec. 515. Pilots sharing flight expenses with passengers. Sec. 516. Terminal Aerodrome Forecast. Sec. 517. Public aircraft eligible for logging flight times. Sec. 518. Aircraft Registry Office. Sec. 519. FAA data transparency. Sec. 520. Intra-agency coordination. Sec. 521. Administrative Services Franchise Fund. Sec. 522. Automatic dependent surveillance-broadcast. Sec. 523. Contract weather observers. Sec. 524. Regions and centers. Sec. 525. Geosynthetic materials. Sec. 526. National Airmail Museum. Sec. 527. Status of agreement between FAA and Little Rock Port Authority. Sec. 528. Briefing on aircraft diversions from Los Angeles International Airport to Hawthorne Municipal Airport. Sec. 529. TFR report. Sec. 530. Air traffic services at aviation events. Sec. 531. Application of veterans’ preference to Federal Aviation Administration personnel