Case study
TWA Flight 800: The Wiring & Cargo Door Investigation
An independent analysis by John Barry Smith — commercial pilot, former FAA Part 135 certificate holder, and US Navy reconnaissance navigator — examining the evidence that the official NTSB investigation failed to adequately address.
What the Evidence Shows
TWA Flight 800, a Boeing 747-100, broke apart in flight on July 17, 1996, killing all 230 people aboard. The NTSB concluded the center fuel tank exploded due to a short circuit in aging wiring. John Barry Smith's independent research — drawing on his experience investigating Air India Flight 182 and United Airlines Flight 811 — identifies a pattern of forward cargo door rupture and structural failure consistent with other Boeing 747 inflight breakups, and documents his decade-long correspondence with Boeing, the FAA, and government officials attempting to have this evidence reviewed.
Forward cargo door
Evidence consistent with forward cargo door rupture as a primary structural failure mechanism, matching the UA 811 and AI 182 failure modes.
Wiring analysis
Aging wiring in the forward cargo area as a potential ignition source — distinct from the center fuel tank wiring theory advanced by the NTSB.
Breakup sequence
The forward fuselage separation sequence is consistent with explosive decompression from a cargo door failure rather than a fuel tank explosion.
Pattern of incidents
TWA 800 is the fifth Boeing 747 to suffer an inflight breakup — a pattern Smith argues demands a unified structural explanation.
Investigation Timeline
Key events from the 1985 Air India 182 crash through Smith's completion of his full TWA 800 analysis report in 2009.
The Crash
TWA Flight 800 breaks apart over the Atlantic
TWA Flight 800 (Boeing 747-131, N93119) departs JFK at 8:19 PM EDT bound for Paris. Twelve minutes after takeoff, at approximately 13,700 feet, the aircraft breaks apart and crashes into the Atlantic Ocean off East Moriches, New York. All 230 people aboard are killed. It is the deadliest aviation accident on US soil at the time.
Prior Pattern
United Airlines Flight 811 — the cargo door precedent
UA 811 (Boeing 747-122) suffers a forward cargo door failure over the Pacific Ocean on February 24, 1989. The door blows open, explosive decompression tears a large section of the fuselage away, and nine passengers are lost. The NTSB ultimately attributes the failure to a faulty cargo door latch actuator. Smith's research identifies this as the key structural precedent for TWA 800.
Prior Pattern
Air India Flight 182 — inflight breakup over the Atlantic
Air India Flight 182 (Boeing 747-237B) breaks apart at 31,000 feet over the North Atlantic, killing all 329 aboard. Smith's independent accident analysis report on AI 182 — developed over years of research — forms the methodological foundation for his TWA 800 analysis and establishes the structural failure pattern he identifies across multiple 747 incidents.
NTSB Investigation
Official investigation focuses on center fuel tank
The NTSB's four-year investigation concludes that the probable cause was an explosion of the center wing fuel tank, resulting from ignition of the flammable fuel/air mixture in the tank. The ignition source is listed as 'not determined with certainty' but attributed to a short circuit in aging wiring. Smith's research challenges this conclusion, arguing the physical evidence is more consistent with a forward cargo door failure.
Smith's Correspondence
Smith begins correspondence with Boeing on wiring and cargo door evidence
John Barry Smith initiates formal written correspondence with Boeing engineers and officials, presenting his analysis of the wiring and cargo door evidence. He argues that the structural failure sequence — particularly the forward fuselage separation — is inconsistent with a center fuel tank explosion and consistent with the UA 811 cargo door failure mode. Boeing's responses are documented in the email record.
Smith's Correspondence
FAA correspondence — wiring and airworthiness concerns
Smith expands his correspondence to FAA officials and individuals, raising concerns about the airworthiness implications of his cargo door and wiring analysis. He argues that if the failure mode he identifies is correct, it has ongoing safety implications for the 747 fleet. The FAA correspondence is preserved in the email records.
Smith's Correspondence
Government and agency correspondence — seeking review
Smith writes to multiple government agencies and officials seeking a formal review of his evidence. The correspondence includes letters to NTSB-adjacent officials (Schleede) and miscellaneous government contacts. The combined government correspondence file documents the full scope of his outreach.
Final Report
Smith AAR 800 — complete independent accident analysis
Smith completes his full independent Accident Analysis Report on TWA Flight 800, comprising four volumes (Parts I, II, III, IV). The report synthesizes his structural analysis, wiring evidence, cargo door failure theory, and decade of correspondence into a comprehensive challenge to the NTSB's center fuel tank conclusion. It remains the most detailed independent technical analysis of the TWA 800 evidence.
Key Evidence & Documents
The following documents form the evidentiary basis of Smith's independent investigation. Each can be downloaded or viewed directly in your browser.
Primary analysis reports
Smith AAR 800 — Complete Report (Parts I–IV)
The full independent accident analysis report on TWA Flight 800. Four volumes covering structural failure sequence, wiring evidence, cargo door analysis, and comparison with prior 747 breakups.
Smith AAR 182 + Appendices
The Air India 182 independent analysis report that established Smith's methodology and identified the structural failure pattern later applied to TWA 800.
Correspondence with Boeing and the FAA
Emails — Boeing (2000–2009)
Smith's written correspondence with Boeing engineers and officials presenting his wiring and cargo door evidence and requesting review.
Government correspondence
Emails — Schleede
Correspondence with John Schleede, former NTSB Managing Director, regarding the TWA 800 evidence.
Emails — Government misc
Miscellaneous government correspondence in support of Smith's request for a formal evidence review.
The Five Boeing 747 Inflight Breakups
Smith's research situates TWA 800 within a pattern of five Boeing 747 inflight breakups. He argues that a unified structural explanation — centered on forward cargo door vulnerability — better accounts for the pattern than five separate unrelated causes.
| Flight | Date | Fatalities | Notes |
|---|---|---|---|
| Air India 182 | 329 | Inflight breakup over North Atlantic. Official cause: bomb. Smith's analysis identifies structural failure pattern. | |
| Pan Am 103 | 270 | Inflight breakup over Lockerbie, Scotland. Official cause: bomb. Part of the 747 breakup pattern. | |
| United Airlines 811 | 9 | Forward cargo door failure over Pacific. NTSB confirmed cargo door rupture. Key structural precedent. | |
| TWA 800 | 230 | Inflight breakup over Atlantic. Official cause: center fuel tank explosion. Smith's analysis: cargo door/wiring. | |
| China Airlines 611 | 225 | Inflight breakup over Taiwan Strait. Official cause: metal fatigue from prior repair. Part of the 747 breakup pattern. |
Rows highlighted in amber (UA 811, TWA 800) are the two incidents most central to Smith's cargo door failure analysis.
Read the Full Investigation
The complete Smith AAR 800 report and all supporting correspondence are available for download from the Research Materials archive. If you have information relevant to this investigation, contact John Barry Smith directly.
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