On December 7, 1987, Pacific Southwest Airlines Flight 1771 operated as a routine commuter flight from Los Angeles to San Francisco, carrying 38 passengers and 5 crew members. Midway through the journey at 22,000 feet, a disgruntled former airline employee smuggled a firearm past security checkpoints and launched a targeted act of sabotage. The resulting crash claimed all 43 lives on board and exposed severe vulnerabilities in commercial aviation security that permanently transformed how airlines screen employees.
The attack remains a watershed moment in aviation safety history. It forced federal regulators to close major security loopholes, altered corporate executive travel policies, and demonstrated how insider access could bypass standard passenger protections. Understanding this tragedy requires looking closely at the events leading up to the flight, the mechanics of the disaster, and the lasting reforms that emerged from the NTSB investigation.
The Motive and Background of David Burke
The perpetrator behind the disaster was 35-year-old David Burke, a ticket agent who had worked for USAir (PSA's parent company) for 14 years. On November 19, 1987, USAir dismissed Burke after an internal investigation caught him stealing $69 in cocktail receipts using a hidden camera.
Burke disputed the termination and sought reinstatement. He arranged a meeting with his former supervisor, Raymond Thomson, who regularly commuted between Los Angeles and the San Francisco Bay Area. When Thomson refused to grant leniency or overturn the firing, Burke began plotting his revenge.
Weeks before the flight, Burke borrowed a Smith & Wesson .44 Magnum revolver from a fellow airline employee. Because federal regulations at the time exempted airline personnel from passing through standard passenger screening checkpoints if they possessed valid company identification, Burke retained his employee badge after being fired. This critical oversight allowed him to bypass metal detectors at Los Angeles International Airport carrying the loaded firearm and a handwritten note scrawled on an airsickness bag.
Inside the Cabin: The Final Minutes of Flight 1771
Flight 1771 departed Los Angeles International Airport at approximately 3:30 p.m. local time. Raymond Thomson was seated near the rear of the British Aerospace 146 aircraft. Burke had purchased a ticket and boarded the plane, sitting a few rows away from his former supervisor.
As the aircraft cruised at 22,000 feet over the central coast of California, the cockpit voice recorder (CVR) captured the unfolding horror:
- At 4:13 p.m., the flight crew radioed Oakland Air Route Traffic Control Center to report an on-board emergency, stating that gunshots had been fired.
- Audio evidence indicated Burke confronted Thomson near the back of the cabin, shooting him twice before breaching the unsecured cockpit door.
- Burke entered the cockpit, declared "I am the problem," and shot both Captain Gregg Lindamood and First Officer James Nunn.
- With the flight crew incapacitated, the control column was pushed fully forward, sending the four-engine jet into a near-vertical, supersonic dive.
The aircraft struck a hillside on the Santa Rita cattle ranch in San Luis Obispo County at an estimated speed of over 700 miles per hour. The impact was so violent that the aircraft disintegrated instantly upon hitting the ground, leaving a crater several feet deep and killing all 43 occupants on impact.
Investigation Findings and NTSB Conclusions
The National Transportation Safety Board launched an exhaustive investigation alongside the Federal Bureau of Investigation. Recovering evidence from a completely pulverized aircraft wreckage presented extreme forensic challenges. However, investigators made critical breakthroughs:
- Forensic Fingerprint Recovery: Investigators discovered a partial human finger fragment wedged inside the trigger guard of the recovered .44 Magnum revolver. Dermatoglyphic analysis confirmed it belonged to David Burke.
- The Airsickness Bag Note: An airsickness bag recovered from the debris field contained a chilling message written by Burke to Thomson, highlighting his grievance over lost employment and denied leniency.
- Security Lapses: The NTSB formal report cited intentional sabotage by Burke while sharply criticizing existing aviation security rules that permitted airline workers to bypass passenger screening checkpoints using corporate credentials.
You can review broader historical aviation safety data and oversight reports through the Federal Aviation Administration archives.
Lasting Changes in Commercial Aviation Security
The tragedy of Flight 1771 forced immediate legislative and operational shifts across the global aviation industry. Congress and the National Transportation Safety Board pushed through emergency rule changes before the end of December 1987.
- Employee Screening Mandates: The Federal Aviation Administration issued emergency amendments requiring all airline and airport employees to undergo the exact same security screening protocols as paying passengers, stripping away unchecked badge exemptions.
- Immediate Credential Surrender: Federal guidelines mandated that airlines immediately seize company identification badges, parking passes, and uniform access keys the moment an employee resigned, retired, or faced termination.
- Corporate Travel Restrictions: Following the loss of four senior executives from Chevron Corporation on the flight, numerous Fortune 500 companies instituted strict travel policies prohibiting key executive officers from boarding the same commercial flight or corporate aircraft.
Frequently Asked Questions
Could the passengers survive the final dive?
No. Investigators determined that the extreme aerodynamic forces and the steep, supersonic descent caused the aircraft to break apart under stress or resulted in immediate incapacitation due to altitude and acceleration, ensuring passengers lost consciousness before impact.
How did David Burke get a gun past security?
Burke retained his active USAir employee identification badge after being fired. At the time, federal regulations allowed airline personnel to bypass metal detectors and baggage scanners by showing company credentials, which allowed him to carry the weapon into the terminal.
Were there any other airline employees on board?
Yes. Aside from the five active crew members, several off-duty airline personnel were commuting on the flight, including two USAir employees and representatives from other carriers.
What happened to the airline after the crash?
Pacific Southwest Airlines was in the process of merging with USAir at the time of the accident. The PSA brand was fully integrated into USAir by 1988, retiring the historic airline name from commercial skies.
