# EgyptAir Flight 990 was deliberately crashed into the Atlantic in 1999 by its relief first officer, the finding of the US NTSB, which Egypt's aviation authority formally rejects in favor of mechanical failure

**No verdict.** The event is not in doubt: on 31 October 1999 a Boeing 767 flying from New York to Cairo went into a steep dive and struck the Atlantic off Nantucket, killing all 217 people aboard. What is disputed is the cause, and two official bodies reached opposite conclusions on the same recorder and wreckage data. The US National Transportation Safety Board (NTSB), in its 2002 report, found the probable cause to be the relief first officer's deliberate flight-control inputs, though it pointedly declined to state a reason and avoided the words “suicide” or “criminal.” Egypt's Civil Aviation Authority (ECAA) formally rejected that reading and argued the dive was set off by a mechanical failure in the right elevator's control system. This file does not hand the question to either side, because the disagreement is between two competent official investigations, not between a finding and a fringe rumor. It reports the NTSB conclusion as the stronger, more widely accepted account while stating plainly that Egypt's mechanical case was never withdrawn and remains its official position.

Category: Government & Intelligence · Era: 1990s · First circulated: Within weeks of the crash, once cockpit-voice and flight-data recorders were read out in late 1999 and US investigators began treating the descent as an intentional act; the two conflicting official reports were published in 2002 · Believed by: The deliberate-act conclusion is the mainstream account among US investigators, aviation-safety analysts, and most Western press. The mechanical-failure account is the official and widely held position in Egypt, backed by the ECAA and much of the Egyptian public and press.
URL: https://theconspiratory.com/theory/egyptair-990-crash

## Summary
In the early hours of 31 October 1999, EgyptAir Flight 990, a Boeing 767 bound for Cairo, took off from New York's John F. Kennedy airport, reached cruising altitude, and roughly half an hour later plunged from 33,000 feet into the Atlantic Ocean about 60 miles south of Nantucket. All 217 passengers and crew were killed. Recovered from deep water, the flight recorders showed the aircraft dived shortly after the command captain left the cockpit, leaving relief first officer Gameel Al-Batouti alone at the controls, and that the engines were shut down during the descent. The US NTSB concluded the dive was caused by Al-Batouti's deliberate control inputs, without determining why. Egypt's Civil Aviation Authority rejected that finding and argued for a failure in the elevator control system. This file separates the documented crash from the still-contested cause, and reports the durable US-versus-Egypt dispute even-handedly.

## The claim
That EgyptAir Flight 990 did not fail mechanically but was deliberately flown into the sea by its relief first officer, who disengaged the autopilot while alone in the cockpit, pushed the nose down, cut the engines, and resisted the returning captain's efforts to recover, killing all 217 people aboard; and, in the competing account, that no deliberate act occurred and the dive was triggered by a fault in the aircraft's elevator controls.

## Origin and timeline
- 1999-10-31: EgyptAir Flight 990, a Boeing 767-300ER (registration SU-GAP) flying from Los Angeles to Cairo with a stop at New York's JFK, takes off from JFK at about 1:20 a.m. EST and climbs to a cruising altitude of 33,000 feet. Roughly half an hour later it dives into the Atlantic about 60 miles south of Nantucket, Massachusetts. All 217 passengers and crew are killed.
- 1999-11: US Navy and NTSB salvage teams recover the cockpit voice recorder and flight data recorder from deep water. The data show the dive began shortly after the command captain left the cockpit, that the relief first officer was alone at the controls, and that both engines were shut down during the descent.
- 1999-11: Having concluded that its early evidence pointed to an intentional act rather than an equipment failure, the NTSB proposes handing the inquiry to the FBI as a possible criminal matter. Egyptian officials object strongly; the investigation stays with the NTSB, and Egypt sends its own experts to take part.
- 1999-2000: US investigators focus on a phrase relief first officer Gameel Al-Batouti repeated in Arabic during the sequence, “Tawakkalt ala Allah” (“I rely on God”), and on the pattern of nose-down elevator inputs and the engine shutdown. Egyptian investigators dispute that this shows intent and press the case for a control-system fault.
- 2001: Egyptian investigators and the ECAA advance a mechanical theory centered on the right elevator's power control units, pointing to evidence such as sheared rivets in elevator bellcranks and a sheared internal pin in a power control actuator as signs of a control-system failure rather than a pilot's deliberate act.
- 2002-03-21: The NTSB publishes its Aircraft Accident Brief (AAB-02/01). It finds the probable cause to be “the airplane's departure from normal cruise flight and subsequent impact with the Atlantic Ocean as a result of the relief first officer's flight control inputs,” adding that the reason for those inputs was not determined. The report avoids the words “suicide” and “criminal.”
- 2002-03: Egypt's Civil Aviation Authority formally rejects the NTSB finding. Its own report concludes the relief first officer did not deliberately dive the airplane and that a mechanical failure of the elevator control system is a plausible and likely cause. The ECAA report is entered into the NTSB docket as an appendix.
- 2002 onward: The two official positions harden into a durable, unresolved dispute. US authorities and most aviation-safety analysts continue to regard the deliberate-act finding as the strongest reading of the data; Egypt maintains its mechanical-failure conclusion as its official position, and the disagreement is never reconciled.

## The evidence, claim by claim
- Claim: Flight 990 crashed, killing everyone aboard, after diving from cruising altitude into the sea.
  Evidence: This is settled and undisputed by either side. The Boeing 767 departed from FL330, entered a steep descent, and struck the Atlantic south of Nantucket in the early hours of 31 October 1999, killing all 217 passengers and crew. Both the NTSB and the ECAA accept the crash, the death toll, and the basic profile of a dive from cruise. The whole dispute is about what set the dive in motion.
- Claim: The recorders show the dive began while the relief first officer was alone at the controls.
  Evidence: Both investigations worked from the same recorders and agree on this timeline: the command captain left the flight deck, and within moments the autopilot was disengaged and the aircraft pitched into a nose-down descent while relief first officer Al-Batouti was the only pilot at the controls. The NTSB reads this, together with the control inputs, as evidence of a deliberate act. Egypt accepts the sequence but argues it is equally consistent with a control failure that happened to occur at that moment.
- Claim: The nose-down elevator inputs and the engine shutdown point to a deliberate act.
  Evidence: This is the core of the NTSB case. The flight data recorder showed sustained nose-down elevator movement, the throttles being brought to idle, and both engines being shut off during the descent, actions the Board found were consistent with intentional inputs and difficult to explain as a mechanical fault. The recovered CVR also captured the captain, back in the cockpit, urging “Pull with me,” while the elevators moved in opposite directions. The NTSB treated the engine shutdown in particular as hard to reconcile with a control-system failure.
- Claim: The repeated phrase “I rely on God” proves the first officer intended to crash the plane.
  Evidence: This is contested and does not carry the weight sometimes placed on it. The relief first officer repeated the Arabic phrase “Tawakkalt ala Allah” several times during the sequence. US investigators read it as a man resigned to a deliberate act; Egyptian investigators and many Arabic speakers noted it is a common invocation said in moments of fear or distress, exactly what a pilot facing a sudden emergency might utter. The NTSB's own finding rested on the flight-control data, not on the prayer, and it never determined a motive.
- Claim: Egypt's mechanical theory identified a specific, plausible failure in the elevator system.
  Evidence: The ECAA case is a genuine engineering argument, not a hand-wave. It focused on the right elevator's power control units and cited physical evidence, including sheared rivets in elevator bellcranks and a sheared pin in a power control actuator, as consistent with a control-system malfunction that could have driven the nose down. The NTSB examined these components and concluded the damage was a result of the crash forces rather than its cause, and that no failure mode it could identify would produce the recorded sequence, including the engine shutdown. The dispute is precisely over which reading of that hardware is correct.
- Claim: Because a US agency reached the verdict about an Egyptian crew, the finding is politically tainted and worthless.
  Evidence: This conflates suspicion of bias with proof of it. It is true that the finding was sensitive: a US board attributing a mass-casualty crash to an Egyptian officer's deliberate act, over the formal objection of the Egyptian government. But the NTSB is an independent technical body, Egyptian experts took part in the investigation, and the conclusion rested on recorder data both sides could examine. Political sensitivity is a reason to report the finding carefully, not a reason to dismiss it. Equally, Egypt's rejection is not reducible to national pride; it advanced a specific technical alternative that the record has to weigh.
- Claim: No conclusive motive for a deliberate act was ever established.
  Evidence: Correct, and the NTSB said so directly. Its report attributed the crash to the relief first officer's flight-control inputs but expressly did not determine why he made them, and it avoided the words “suicide” and “criminal.” Various motives were floated in the press, from personal grievance to distress, but none was established by the investigation. The absence of a proven motive is a real limit on the deliberate-act account, and it is part of why Egypt continued to argue that a mechanical explanation better fit the evidence.

## Why people believe it
- The recorder data are genuinely hard to explain innocently. A dive that begins seconds after the captain steps out, sustained nose-down inputs, and both engines being shut off during the descent form a pattern that, to most aviation-safety analysts, reads far more naturally as deliberate action than as a spontaneous equipment failure. That is the backbone of the NTSB case and why it is widely accepted.
- The mechanical alternative has real engineering content. Egypt did not simply deny the finding; it pointed to specific hardware, the right elevator's power control units and physical damage in the control linkage, and built a failure hypothesis around it. For anyone who distrusts the intentional reading, that gives the mechanical account something concrete to hold onto.
- The stakes made both sides dig in. Attributing a crash to a pilot's deliberate act carries enormous weight for a national airline, a grieving family, and a country's reputation, while the alternative implicates a US-built aircraft. With so much riding on the verdict, each side had strong reasons to defend its reading, which is part of why the dispute never closed.
- The unresolved motive leaves a gap belief can fill. Because the NTSB never said why the first officer would do such a thing, and never used the word suicide, the story has a hole in the middle. That gap makes the deliberate-act account feel incomplete to some and lets the mechanical-failure account remain, for its supporters, the more satisfying explanation.

## Open questions
- No motive for a deliberate act was ever established. The NTSB attributed the crash to the relief first officer's control inputs but explicitly did not determine why he made them, leaving the central human question, if the act was intentional, unanswered.
- The two investigations read the same physical evidence in opposite ways. Whether the damage found in the right elevator's power control components was a cause of the dive or a consequence of the impact is the technical crux, and the NTSB and ECAA never reconciled their opposing conclusions about it.
- The meaning of the repeated phrase “I rely on God” remains genuinely contested. It can be read as resignation before a deliberate act or as a common invocation in a moment of terror, and nothing in the recorders settles which reading is right.
- Because the dispute is between two official bodies rather than a court, there is no higher authority that adjudicated it. The NTSB finding stands as the US conclusion and the ECAA finding stands as Egypt's, and no binding process ever chose between them.

## Sources
- Aircraft Accident Brief: EgyptAir Flight 990, Boeing 767-366ER, SU-GAP (AAB-02/01), National Transportation Safety Board (2002): https://www.ntsb.gov/investigations/AccidentReports/Reports/AAB0201.pdf
- EgyptAir Flight 990 investigation (DCA00MA006) docket, National Transportation Safety Board (2002): https://www.ntsb.gov/investigations/Pages/DCA00MA006.aspx
- NTSB Report Faults Co-Pilot in EgyptAir Crash, The Washington Post (2002): https://www.washingtonpost.com/archive/politics/2002/03/22/ntsb-report-faults-co-pilot-in-egyptair-crash/be373dce-1cd0-4122-b8ef-8728c3052fa1/
- NTSB blames co-pilot for EgyptAir crash, CNN (2002): https://edition.cnn.com/2002/US/03/21/ntsb.egypt.air/
- Egyptians Reject Flight 990 Finding, CBS News (2002): https://www.cbsnews.com/news/egyptians-reject-flight-990-finding/
- NTSB: EgyptAir Copilot At Fault, CBS News (2002): https://www.cbsnews.com/news/ntsb-egyptair-copilot-at-fault/
- EgyptAir flight 990: Background and Facts, Encyclopaedia Britannica: https://www.britannica.com/event/EgyptAir-flight-990
- Flight 990: What Really Happened?, Al Jazeera (2019): https://www.aljazeera.com/video/al-jazeera-world/2019/7/2/flight-990-what-really-happened
- EgyptAir Flight 990, Wikipedia: https://en.wikipedia.org/wiki/EgyptAir_Flight_990

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