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Abbreviation
DOT
Agencies
Department of Transportation
National Transportation Safety Board
Surface Transportation Board
Federal Agency
Yes
Location

United States

What to Report to the OIG Hotline
If you know about waste, fraud, abuse, or misconduct relating to a Department of Transportation (DOT) employee, program, contract, or grant you may want to report it to the DOT, Office of Inspector General (OIG) Hotline. Allegations may be reported 24 hours a day, seven days a week by DOT employees, contractors, or the general public. The DOT OIG has jurisdiction over disclosures for all DOT modal Operating Administrations involving:
  • Contract and Grant Fraud (view a description of Common Fraud Schemes)
  • Environmental, Health, and Safety Violations
  • Computer Crimes
  • Product Substitution and Suspect/Counterfeit Parts
  • Bribery, Kickbacks, and Gratuities
  • False Statements and False Claims
  • Conflicts of Interest and Ethics Violations
  • Travel Fraud
  • Theft or Abuse of Government Property
  • Violation(s) of Criminal Law and/or the Civil False Claims Act in Connection with a Federal Contract
  • Other Violations of Federal Laws and Regulations
The DOT OIG has jurisdiction to investigate allegations of whistleblower retaliation involving all:
  • DOT Employees
  • Employees of DOT Contractors, Subcontractors, Grantees, and Sub-grantees

FAA Does Not Effectively Secure Its High-Impact Systems Supporting the National Airspace System

2026
FI2026023
Audit
Department of Transportation OIG
Department of Transportation

Our Objective(s) To assess whether FAA (1) has selected and implemented the required high-impact baseline security controls for its high-impact systems and (2) is mitigating potential vulnerabilities for its high-impact systems. Why This Audit FAA relies on critical information systems to meet its...

FRA Can Improve Its Oversight and Management of Accountable Personal Property

2026
FI2026024
Audit
Department of Transportation OIG
Department of Transportation

Our Objective(s) To assess the Federal Railroad Administration's (FRA) (1) internal controls related to recording and monitoring of its accountable personal property (APP) records and (2) the accuracy and completeness of FRA's APP records. Why This Audit? We have previously identified issues in the...

FAA Did Not Adequately Monitor and Enforce IIJA-Funded Contracts' Compliance With Buy American Requirements

2026
FI2026025
Audit
Department of Transportation OIG
Department of Transportation

Our Objective(s) To determine to what extent the Federal Aviation Administration's (FAA) award and administration of the Infrastructure Investment and Jobs Act (IIJA)-funded facility and equipment (F&E) contracts meet domestic content laws and Agency requirements. Our findings are organized as...

FAA Followed Its Policy When Responding to Fume Events in Boeing 737 MAX 8 Aircraft, But Further Assessment Is Warranted

2026
AV2026026
Audit
Department of Transportation OIG
Department of Transportation

Our Objective(s) To assess the Federal Aviation Administration's (FAA) actions in response to recent incidents of toxic smoke and fumes entering aircrafts' cockpit or cabin when load reduction devices (LRD) are activated. Our findings are organized as follows: (1) FAA's Corrective Action Review...

Summary Report on Significant Single Audit Findings Impacting DOT Programs for the 3-Month Period Ending March 31, 2026

2026
SA2026027
Audit
Department of Transportation OIG
Department of Transportation

Our Objective(s) To evaluate single audit reports uploaded to the Federal Audit Clearinghouse between January 1, 2026, and March 31, 2026, and identify findings that affect directly awarded Department of Transportation (DOT) programs. Why This Audit OIG performs oversight of independent, non-Federal...

MARAD's Policies and Procedures Are Not Sufficient To Assess Risk and Effectively Oversee IIJA-Funded Port Infrastructure Development Program Grants

2026
ST2026020
Audit
Department of Transportation OIG
Department of Transportation

Our Objective(s) To assess MARAD's risk management and oversight of Port Infrastructure Development Project (PIDP) grants funded through the Investment in Infrastructure and Jobs Act (IIJA). Specifically, we assessed MARAD's policies and procedures in the areas of risk management, oversight...

Summary Report on Significant Single Audit Findings Impacting DOT Programs for the 3-Month Period Ending December 31, 2025

2026
SA2026021
Audit
Department of Transportation OIG
Department of Transportation

Our Objective(s) To evaluate single audit reports uploaded to the Federal Audit Clearinghouse between October 1, 2025, and December 31, 2025, and identify findings that affect directly awarded Department of Transportation (DOT) programs. Why This Audit OIG performs oversight of independent, non...

FAA Took Action To Improve Monitoring and Increase Staffing Levels at Contract Towers, but Staffing Shortages Remain

2026
AV2026022
Audit
Department of Transportation OIG
Department of Transportation

Our Objective(s) To assess the Federal Aviation Administration's (FAA) actions to (1) improve its monitoring of controller staffing levels at contract towers and (2) evaluate training requirements and other factors that may impact staffing at contract towers. Why This Audit FAA's Contract Tower (FCT...

Quality Control Review of the Independent Auditor's Report on the Great Lakes St. Lawrence Seaway Development Corporation's Audited Financial Statements for Fiscal Year 2025

2026
QC2026007
Audit
Department of Transportation OIG
Department of Transportation

Our Objective(s)To perform a quality control review (QCR) of Allmond & Company, LLC's audit of the Great Lakes St. Lawrence Seaway Development Corporation's (GLS) financial statements as of and for the fiscal year ended September 30, 2025. We reviewed Allmond's report, dated January 7, 2026, and...

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