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Website
https://www.oig.dot.gov/
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
Hotline Page
https://www.oig.dot.gov/hotline
Whistleblower Protection Page
https://www.oig.dot.gov/investigations/dot-employee-whistleblower-protection

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...

Quality Control Review of the Independent Auditor's Report on the National Transportation Safety Board's Audited Financial Statements for Fiscal Year 2025

2026
QC2026008
Audit
Department of Transportation OIG
National Transportation Safety Board

Our Objective(s)To perform a quality control review (QCR) of Allmond & Company, LLC's audit of the National Transportation Safety Board's (NTSB) financial statements as of and for the fiscal year ended September 30, 2025. We reviewed Allmond's report, dated January 7, 2026, and related documentation...

Quality Control Review of the Independent Auditor's Report on the Surface Transportation Board's Audited Financial Statements for Fiscal Year 2025

2026
QC2026009
Audit
Department of Transportation OIG
Surface Transportation Board

Our Objective(s)To perform a quality control review (QCR) of Allmond & Company, LLC's audit of the Surface Transportation Board's (STB) financial statements as of and for the fiscal year ended September 30, 2025. We reviewed Allmond's report, dated January 7, 2026, and related documentation. About...

Quality Control Review of the Independent Auditor's Report on the Federal Aviation Administration's Audited Consolidated Financial Statements for Fiscal Year 2025

2026
QC2026010
Audit
Department of Transportation OIG
Department of Transportation

Our Objective(s)To perform a quality control review (QCR) of KPMG, LLP's audit of the Federal Aviation Administration's (FAA) financial statements as of and for the fiscal year ended September 30, 2025. We reviewed KPMG's report, dated January 13, 2026, and related documentation. About This ReportWe...

Quality Control Review of the Independent Auditors' Report on the Department of Transportation's Audited Consolidated Financial Statements for Fiscal Year 2025

2026
QC2026011
Audit
Department of Transportation OIG
Department of Transportation

Our Objective(s)To perform a quality control review (QCR) of KPMG LLP's audit of the Department of Transportation's consolidated financial statements as of and for the fiscal year ended September 30, 2025. We reviewed KPMG's report, dated January 14, 2026, and related documentation. About This...

Noncompliant Contracting Practices Leave GLS Vulnerable to Inefficient and Cost-Ineffective Outcomes

2026
FI2026012
Audit
Department of Transportation OIG
Department of Transportation

Our Objective(s)To assess whether GLS's contract award and administration practices comply with Federal and Departmental requirements. Specifically, we evaluated GLS's compliance with contract award and administration requirements and overseeing contracting officer warrants. Why This AuditBetween...

Summary Report on Significant Single Audit Findings Impacting DOT Programs for the 3-Month Period Ending September 30, 2025

2026
SA2026013
Audit
Department of Transportation OIG
Department of Transportation

Our Objective(s)To evaluate single audit reports uploaded to the Federal Audit Clearinghouse between July 1, 2025 and September 30, 2025, and identify findings that affect directly awarded Department of Transportation (DOT) programs. Why This AuditOIG performs oversight of independent, non-Federal...

FAA's Oversight of United Airlines' Maintenance Practices Is Hindered by Inadequate Inspection Resources, Ineffective Workforce Planning, and Impediments to Accessing Air Carrier Data

2026
AV2026014
Audit
Department of Transportation OIG
Department of Transportation

Our Objective(s)To assess FAA's oversight of United Airlines' maintenance practices. Specifically, we evaluated FAA's actions to address maintenance non-compliances and violations at the air carrier. Why This AuditUnited Airlines is one of the world's largest commercial air carriers, carrying over...

Quality Control Review of the Management Letter for the Great Lakes St. Lawrence Seaway Development Corporation's Audited Financial Statements for Fiscal Year 2025

2026
QC2026015
Audit
Department of Transportation OIG
Department of Transportation

Our Objective(s)To perform a quality control review (QCR) of Allmond & Company, LLC's management letter related to the audit of the Great Lakes St. Lawrence Seaway Development Corporation's (GLS) financial statements for fiscal year 2025. We reviewed Allmond's management letter, dated January 7...

Quality Control Review of the Management Letter for the National Transportation Safety Board's Audited Financial Statements for Fiscal Year 2025

2026
QC2026016
Audit
Department of Transportation OIG
National Transportation Safety Board

Our Objective(s)To perform a quality control review (QCR) of Allmond & Company, LLC's (Allmond) management letter related to the audit of the National Transportation Safety Board's (NTSB) financial statements for fiscal year 2025. We reviewed Allmond's management letter, dated January 7, 2026, and...

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