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Keyword and entity retrieval over indexed evidence, hypotheses, and claims. Nothing is answered from model memory on this page. For a scored percentage with the working shown, open Fact or Fiction.
Topic remit
Day of
Engineering
Facilitation
Intelligence & process
Foreknowledge
Independent cluster
Entities
Matching hypotheses
Matching claims
- contradictedCLM-005
Fahad al-Thumairy provided no assistance to the two operatives.
- partially_supportedCLM-006
Thumairy tasked an associate to help two 'very significant people' on arrival.
- verifiedCLM-011
American Airlines Flight 11 struck World Trade Center 1 at 08:46:40 on 11 September 2001.
- verifiedCLM-012
United Airlines Flight 175 struck World Trade Center 2 at 09:03:11.
- disputedCLM-013
Aircraft impact and the ensuing fires initiated the collapses of WTC 1 and WTC 2 without additional energetic devices.
- contradictedCLM-025
Some of the named 19 hijackers were not aboard the aircraft / were still alive.
- partially_supportedCLM-026
NORAD/FAA war-games and false timelines indicate the air-defence failure was more than accident.
- unverifiedCLM-034
Reported 9/11 aircraft manoeuvres were not flyable manually by the named hijacker-pilots (automation/remote guidance).
- well_supportedCLM-038
Street-level witnesses in lower Manhattan saw/heard a second aircraft hit the South Tower.
Evidence supporting
18Flight 93: white jet / C-130 and shoot-down rumours
NTSB flight-path studies, Air Traffic Control tapes, and CVR/FDR summaries (AA11, UA175, AA77, UA93) · 2001-09-11
Other aircraft were near UA93 at the end, and wreckage was distributed along a path, not a single postage-stamp hole only.
Commission / NORAD tapes: delayed notification and a phantom AA11
9/11 Commission Report · 2004-07-22
Military notification lagged FAA awareness; a phantom AA11 was injected into the response.
David Ray Griffin — Anomalies in official accounts of AA77 and UA93 (Toronto Report ch.7)
The 9/11 Toronto Report (2012), International Hearings on the Events of September 11, 2001 · 2012-09-11
Griffin's 2012 chapter lists named process contradictions on AA77 notification and UA93 notification, plus Pentagon-object and UA93-shoot-down arguments with named witnesses and an FAA memo.
1998 raw intelligence: UBL hijack trial run at a New York airport
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 1998-12-03
A December 1998 CIA raw report, later a PDB item, stated that a UBL-linked hijack plan was proceeding and that two team members in the U.S. had evaded security in a New York airport trial run.
John Farmer: NORAD and some FAA accounts of 11 September were not true
John Farmer / 9/11 Commission staff statements on NORAD and FAA accounts · 2004-07-22
Commission senior counsel stated that NORAD's (and some FAA) accounts were not true.
FBI: Thumairy tasked an associate; 'two very significant people'
FBI materials released under Executive Order 14040 · 2021-09-11
Declassified FBI reporting asserts Thumairy tasked help and described the pair as very significant before the attacks.
Evidence contradicting
7NTSB flight-path study: AA77 from Dulles to the Pentagon
NTSB flight-path studies, Air Traffic Control tapes, and CVR/FDR summaries (AA11, UA175, AA77, UA93) · 2002-02-19
NTSB reconstructed a continuous radar/path track of AA77 from takeoff to the Pentagon.
Commission: no evidence Thumairy assisted the two operatives
9/11 Commission Report · 2004-07-22
2004 Commission published a negative finding on Thumairy assistance.
UA93 ACARS 09:23 and 09:28 mayday — NSAEBB 196 quotation
NTSB flight-path studies and ATC transcripts released via NSArchive (NSAEBB 196) · 2001-09-11
NTSB ACARS/ATC text quoted by NSArchive: UA93 received a 09:23 warning about cockpit intrusion and the NY impacts, then at 09:28 transmitted a mayday / 'hey get out of here' as it was hijacked.
ASCE Pentagon building performance: 757-class impact damage
ASCE/SEI Pentagon Building Performance Report (2003) · 2003-01-01
An engineering team mapped interior damage consistent with a large-aircraft mass trajectory through the Pentagon.
Commission: AA77 struck the Pentagon at 09:37:46
9/11 Commission Report · 2004-07-22
The Commission states AA77 struck the Pentagon at 09:37:46.
Commission: UA93 crashed near Shanksville at 10:03:11 after a passenger revolt
9/11 Commission Report · 2004-07-22
UA93 impacted a field in Somerset County, Pennsylvania, at 10:03:11. Official transcription of the CVR describes a passenger counterattack.
Ambiguous
17NTSB path studies and ATC transcripts FOIA'd by NSArchive (Aug 2006)
NTSB flight-path studies and ATC transcripts released via NSArchive (NSAEBB 196) · 2006-08-11
In August 2006 NTSB released to the National Security Archive the four-flight ATC transcripts, three path studies, and the UA93 DFDR specialist report, after refusing to open its own public docket.
September 11th Sourcebooks index (NSArchive volumes I–VII and updates)
National Security Archive — September 11th Sourcebooks · 2026-09-03
The National Security Archive organised a September 11th Sourcebook series of at least seven volumes plus later FOIA postings on Clarke, FAA, and NTSB transcripts.
Thumairy denials contradicted by witnesses and telephone records
9/11 Commission Report · 2004-07-22
Commission reports a contradiction between Thumairy's denial of knowing Bayoumi and other records.
Commission: AA11 struck WTC1 at 08:46:40
9/11 Commission Report · 2004-07-22
A large aircraft identified as AA11 struck WTC 1 at 08:46:40 on 11 September 2001.
Piers Robinson — Manual or Automated? Flight simulation of reported 9/11 aircraft manoeuvres (May 2026)
Piers Robinson, Manual or Automated? Flight simulation study of reported 9/11 aircraft manoeuvres (May 2026) · 2026-05-01
IC911 published a May 2026 Robinson report whose title frames reported 9/11 manoeuvres as a manual-vs-automated question.
Hulsey et al. (UAF): fire did not cause the observed collapse of WTC 7
Hulsey, Quan, Xiao — University of Alaska Fairbanks WTC 7 study (2019–2020) · 2020-03-01
A University of Alaska Fairbanks team published a model concluding fire did not cause WTC 7's observed collapse.
Contemporary reports
19Flight 93: white jet / C-130 and shoot-down rumours
NTSB flight-path studies, Air Traffic Control tapes, and CVR/FDR summaries (AA11, UA175, AA77, UA93) · 2001-09-11
Other aircraft were near UA93 at the end, and wreckage was distributed along a path, not a single postage-stamp hole only.
NTSB flight-path study: AA77 from Dulles to the Pentagon
NTSB flight-path studies, Air Traffic Control tapes, and CVR/FDR summaries (AA11, UA175, AA77, UA93) · 2002-02-19
NTSB reconstructed a continuous radar/path track of AA77 from takeoff to the Pentagon.
Commission / NORAD tapes: delayed notification and a phantom AA11
9/11 Commission Report · 2004-07-22
Military notification lagged FAA awareness; a phantom AA11 was injected into the response.
1998 raw intelligence: UBL hijack trial run at a New York airport
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 1998-12-03
A December 1998 CIA raw report, later a PDB item, stated that a UBL-linked hijack plan was proceeding and that two team members in the U.S. had evaded security in a New York airport trial run.
John Farmer: NORAD and some FAA accounts of 11 September were not true
John Farmer / 9/11 Commission staff statements on NORAD and FAA accounts · 2004-07-22
Commission senior counsel stated that NORAD's (and some FAA) accounts were not true.
Mineta: Cheney asked if 'the orders still stand' as an aircraft approached
Norman Mineta testimony, 9/11 Commission hearing, 23 May 2003 · 2003-05-23
Norman Mineta testified that Cheney confirmed standing orders while being updated on an inbound aircraft's decreasing range.
Later recollections / analysis
23NTSB path studies and ATC transcripts FOIA'd by NSArchive (Aug 2006)
NTSB flight-path studies and ATC transcripts released via NSArchive (NSAEBB 196) · 2006-08-11
In August 2006 NTSB released to the National Security Archive the four-flight ATC transcripts, three path studies, and the UA93 DFDR specialist report, after refusing to open its own public docket.
David Ray Griffin — Anomalies in official accounts of AA77 and UA93 (Toronto Report ch.7)
The 9/11 Toronto Report (2012), International Hearings on the Events of September 11, 2001 · 2012-09-11
Griffin's 2012 chapter lists named process contradictions on AA77 notification and UA93 notification, plus Pentagon-object and UA93-shoot-down arguments with named witnesses and an FAA memo.
September 11th Sourcebooks index (NSArchive volumes I–VII and updates)
National Security Archive — September 11th Sourcebooks · 2026-09-03
The National Security Archive organised a September 11th Sourcebook series of at least seven volumes plus later FOIA postings on Clarke, FAA, and NTSB transcripts.
FBI: Thumairy tasked an associate; 'two very significant people'
FBI materials released under Executive Order 14040 · 2021-09-11
Declassified FBI reporting asserts Thumairy tasked help and described the pair as very significant before the attacks.
Kevin Ryan — Lies and Obstruction: Indefensible Air Defenses on 9/11 (8 Sep 2024)
International Center for 9/11 Justice · 2024-09-08
Ryan presented a 2024 talk arguing 9/11 air defences were 'indefensible' in a stronger sense than fog-of-war.
Piers Robinson — Manual or Automated? Flight simulation of reported 9/11 aircraft manoeuvres (May 2026)
Piers Robinson, Manual or Automated? Flight simulation study of reported 9/11 aircraft manoeuvres (May 2026) · 2026-05-01
IC911 published a May 2026 Robinson report whose title frames reported 9/11 manoeuvres as a manual-vs-automated question.
Official documents
23Flight 93: white jet / C-130 and shoot-down rumours
NTSB flight-path studies, Air Traffic Control tapes, and CVR/FDR summaries (AA11, UA175, AA77, UA93) · 2001-09-11
Other aircraft were near UA93 at the end, and wreckage was distributed along a path, not a single postage-stamp hole only.
NTSB flight-path study: AA77 from Dulles to the Pentagon
NTSB flight-path studies, Air Traffic Control tapes, and CVR/FDR summaries (AA11, UA175, AA77, UA93) · 2002-02-19
NTSB reconstructed a continuous radar/path track of AA77 from takeoff to the Pentagon.
NTSB path studies and ATC transcripts FOIA'd by NSArchive (Aug 2006)
NTSB flight-path studies and ATC transcripts released via NSArchive (NSAEBB 196) · 2006-08-11
In August 2006 NTSB released to the National Security Archive the four-flight ATC transcripts, three path studies, and the UA93 DFDR specialist report, after refusing to open its own public docket.
Commission / NORAD tapes: delayed notification and a phantom AA11
9/11 Commission Report · 2004-07-22
Military notification lagged FAA awareness; a phantom AA11 was injected into the response.
1998 raw intelligence: UBL hijack trial run at a New York airport
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 1998-12-03
A December 1998 CIA raw report, later a PDB item, stated that a UBL-linked hijack plan was proceeding and that two team members in the U.S. had evaded security in a New York airport trial run.
John Farmer: NORAD and some FAA accounts of 11 September were not true
John Farmer / 9/11 Commission staff statements on NORAD and FAA accounts · 2004-07-22
Commission senior counsel stated that NORAD's (and some FAA) accounts were not true.
Independent / media
11David Ray Griffin — Anomalies in official accounts of AA77 and UA93 (Toronto Report ch.7)
The 9/11 Toronto Report (2012), International Hearings on the Events of September 11, 2001 · 2012-09-11
Griffin's 2012 chapter lists named process contradictions on AA77 notification and UA93 notification, plus Pentagon-object and UA93-shoot-down arguments with named witnesses and an FAA memo.
Kevin Ryan — Lies and Obstruction: Indefensible Air Defenses on 9/11 (8 Sep 2024)
International Center for 9/11 Justice · 2024-09-08
Ryan presented a 2024 talk arguing 9/11 air defences were 'indefensible' in a stronger sense than fog-of-war.
Piers Robinson — Manual or Automated? Flight simulation of reported 9/11 aircraft manoeuvres (May 2026)
Piers Robinson, Manual or Automated? Flight simulation study of reported 9/11 aircraft manoeuvres (May 2026) · 2026-05-01
IC911 published a May 2026 Robinson report whose title frames reported 9/11 manoeuvres as a manual-vs-automated question.
Vanity Fair 2006: NORAD tapes vs earlier public NORAD timeline
Michael Bronner, '9/11 Live: The NORAD Tapes,' Vanity Fair (August 2006) · 2006-08-01
Published tape reconstruction shows NORAD's early public timeline was inconsistent with its own audio.
Commission leadership: FBI said it wasn't withholding anything
ProPublica / New York Times reporting on declassified FBI files (2023–2024) · 2023-04-27
The Commission chair states the FBI represented that nothing was being withheld.
IC911 Research Agenda, January 2024
IC911 Research Agenda (January 2024) · 2024-01-01
IC911's January 2024 agenda treats WTC destruction, remote guidance, air-defence failure, Saudi civil litigation, and insider trading as open research streams.
Unresolved contradictions
- CTR-002Thumairy assistance: Commission vs FBI 2021