Exact Time and Date of the Pentagon Impact
American Airlines Flight 77 struck the Pentagon at 9:37 a.m. Eastern Time on September 11, 2001, after being hijacked by five terrorists. The aircraft, a Boeing 757-222, was traveling at approximately 530 miles per hour when it hit the western facade of the building according to Forbes.
The impact occurred in the first-floor section of the building, creating a hole roughly 75 feet wide in the outer ring. The plane penetrated three of the building's five rings before disintegrating, releasing approximately 10,000 gallons of jet fuel that ignited intense fires. The National Institute of Standards and Technology (NIST) published a detailed technical report on the structural behavior and fire progression following the collision via the NIST website.
Casualties, Rescue Operations, and Structural Damage
The attack killed all 64 people aboard Flight 77 and 125 people inside the Pentagon, totaling 189 fatalities. Most Pentagon victims were civilian employees and military personnel working in the impacted section, which had been partially renovated to improve structural resilience and evacuation routes as reported by Forbes.
Emergency response teams arrived within minutes, and the rebuilt section reopened in 2003 with enhanced safety features including blast-resistant windows and improved stairwells. The total cost of the Pentagon renovation and repair project exceeded $4.7 billion, funded through the Department of Defense budget and managed by the U.S. Army Corps of Engineers per Forbes reporting.
Investigations, Official Reports, and Security Reforms
The 9/11 Commission Report, released in July 2004, concluded that the hijackers exploited weaknesses in aviation security and intelligence sharing. The report identified failures in radar tracking, passenger screening, and inter-agency communication that allowed the hijacked aircraft to reach the Pentagon from the official 9/11 Commission website.
In response, the Transportation Security Administration (TSA) implemented reinforced cockpit doors, expanded passenger screening, and the federal air marshal program. The Pentagon Force Protection Agency (PFPA) was strengthened with advanced surveillance systems and coordinated response protocols with the Department of Defense and local first responders per SEC enforcement updates on financial and security disclosures.