Research summary
Research summary
Topic summary
MH370's sudden diversion stemmed from an acute mechanical failure or cargo fire that rapidly incapacitated the flight crew.
Key research questions
- Research this topic from public information: What happened to flight MH370.
- Investigate this contrarian claim about What happened to flight MH370.
Important claims and supporting citations
On January 17, 2014, conductive low-pressure oxygen hoses on 9M-MRO were replaced with non-conductive hoses under FAA AD 2012-13-05 to mitigate oxygen-fed cockpit fire risks.
MH370's crew oxygen system was replenished to 1,800 psi hours before departure, providing two pilots with approximately 13 hours of oxygen endurance across two 115-cubic-foot cylinders.
The Malaysian Safety Investigation Report identified lithium-ion batteries and mangosteens as the only two cargo items of concern, but ruled them out following destructive testing by Malaysia's STRIDE.
Seven B777 flight simulator trials conducted by investigators indicated that MH370's turns after IGARI and south of Penang were likely executed manually.
In October 2014, MH370 family association Voice370 formally requested the full detailed cargo manifest and load instruction sheet, which Malaysia Airlines refused to release.
FAA AD 2014-05-03, addressing fuselage cracking and rapid decompression under SATCOM antenna adapters, did not apply to 9M-MRO due to its specific antenna configuration and location.
FAA AD 2012-13-05 was prompted by an incident on another Boeing 777 operator where electrical heating of an oxygen hose caused extensive cockpit damage near the first officer's seat.
The lithium batteries on MH370 were 7.4-volt radio battery packs rated at 11.1 or 11.8 watt-hours packed 24 per shipping box.
Competing explanations
Maintenance logs show an initial 'nil noted' for oxygen replenishment before an engineer added oxygen solely to the flight deck crew system.
Outstanding questions
- Uncontrollable In-Flight Emergency and Hypoxia
Ver todas las afirmaciones (texto)
Afirmaciones
Claim text is for reading and citation. Bulk copying and AI training need a licensed maps data API key. Markdown
MH370 was a scheduled Malaysia Airlines flight from Kuala Lumpur International Airport to Beijing Capital Int…
MH370 was a scheduled Malaysia Airlines flight from Kuala Lumpur International Airport to Beijing Capital International Airport.
Labels: Inferred, Low
Uncontrollable In-Flight Emergency and Hypoxia
An electrical fire or rapid depressurization incapacitated the crew shortly after the initial turnback toward Penang.
Labels: Inferred, High, investigate
The official investigation into MH370 concluded that it was “unable to determine the real cause.”
The official investigation into MH370 concluded that it was “unable to determine the real cause.”
Labels: Inferred, High
MH370 Initial Disappearance and Fate
MH370 Initial Disappearance and Fate
Labels: Inferred, Low
MH370 Last Communications and Tracking
MH370 Last Communications and Tracking
Labels: Inferred, Low
On January 17, 2014, conductive low-pressure oxygen hoses on 9M-MRO were replaced with non-conductive hoses u…
On January 17, 2014, conductive low-pressure oxygen hoses on 9M-MRO were replaced with non-conductive hoses under FAA AD 2012-13-05 to mitigate oxygen-fed cockpit fire risks.
Labels: Source-linked, Low
The lead investigator stated that evidence such as ceased communications and manual turnback pointed to unlaw…
The lead investigator stated that evidence such as ceased communications and manual turnback pointed to unlawful interference rather than mechanical anomaly.
Labels: Inferred, Medium
Radar records show no rapid speed or altitude descents near Penang, contradicting standard emergency descent…
Radar records show no rapid speed or altitude descents near Penang, contradicting standard emergency descent profiles following rapid decompression or fire.
Labels: Inferred, Low
STRIDE tests concluded that dangerous electrical interaction between mangosteen liquids and adjacent battery…
STRIDE tests concluded that dangerous electrical interaction between mangosteen liquids and adjacent battery cargo was highly improbable because the fruit was packed in plastic crates, containers, and plastic sheeting.
Labels: Inferred, Low
MH370's maintenance records showed no pressurization or air-conditioning defect trends or Mandatory Occurrenc…
MH370's maintenance records showed no pressurization or air-conditioning defect trends or Mandatory Occurrence Reports between its June 2010 D-check and the disappearance flight.
Labels: Inferred, Low
Malaysia Airlines Flight MH370 deviated from its planned Kuala Lumpur–Beijing route on March 8, 2014.
Malaysia Airlines Flight MH370 deviated from its planned Kuala Lumpur–Beijing route on March 8, 2014.
Labels: Inferred, Medium
There were 239 people aboard MH370, consisting of 227 passengers and 12 crew members.
There were 239 people aboard MH370, consisting of 227 passengers and 12 crew members.
Labels: Inferred, Medium
The Motorola battery consignments on MH370 were loaded across multiple cargo positions (47R and 23L/23R).
The Motorola battery consignments on MH370 were loaded across multiple cargo positions (47R and 23L/23R).
Labels: Source-linked, Low
MH370 pilots received no notification of bulk lithium-ion batteries aboard because the consignment was packed…
MH370 pilots received no notification of bulk lithium-ion batteries aboard because the consignment was packed under Section II of Packing Instruction 965 and treated as non-dangerous goods.
Labels: Inferred, Medium
Post-disappearance thermal testing on exemplar battery models showed cell bulging at 175°C, fume emission at…
Post-disappearance thermal testing on exemplar battery models showed cell bulging at 175°C, fume emission at 187°C, eruption at 207°C, and gas outputs up to 176.5 ppm CO and 471 ppm CO2.
Labels: Inferred, Low
Wayward trajectory analysis showed waypoint VAMPI was programmed prior to reaching FF04 near Penang, indicati…
Wayward trajectory analysis showed waypoint VAMPI was programmed prior to reaching FF04 near Penang, indicating purposeful northwest routing over the Malacca Strait.
Labels: Inferred, Low
FAA AD 2014-05-03, addressing fuselage cracking and rapid decompression under SATCOM antenna adapters, did no…
FAA AD 2014-05-03, addressing fuselage cracking and rapid decompression under SATCOM antenna adapters, did not apply to 9M-MRO due to its specific antenna configuration and location.
Labels: Source-linked, Low
MH370 carried 221 kg of Motorola lithium-ion batteries (models PMNN4081BRC and PMNN4073AR) within a broader 2…
MH370 carried 221 kg of Motorola lithium-ion batteries (models PMNN4081BRC and PMNN4073AR) within a broader 2,453 kg consignment of chargers and accessories.
Labels: Inferred, Low
The Malaysian Safety Investigation Report identified lithium-ion batteries and mangosteens as the only two ca…
The Malaysian Safety Investigation Report identified lithium-ion batteries and mangosteens as the only two cargo items of concern, but ruled them out following destructive testing by Malaysia's STRIDE.
Labels: Source-linked, Low
The First Officer's mobile phone registered a connection with a cellular tower in Bandar Baru Farlim, Penang…
The First Officer's mobile phone registered a connection with a cellular tower in Bandar Baru Farlim, Penang at 01:52:27 MYT.
Labels: Inferred, Low
Prior to MH370, 36 flights had transported similar combinations of battery consignments and mangosteens witho…
Prior to MH370, 36 flights had transported similar combinations of battery consignments and mangosteens without recorded incident.
Labels: Inferred, Low
The preflight oxygen servicing entry for MH370 was initiated at 1,120 psi, which was well above Malaysia Airl…
The preflight oxygen servicing entry for MH370 was initiated at 1,120 psi, which was well above Malaysia Airlines' dispatch minimum of 310 psi at 35°C and consistent with routine replenishment policy.
Labels: Inferred, Low
Malaysian military radar tracked MH370 until 02:22:12 MYT, losing contact approximately 10 nautical miles nor…
Malaysian military radar tracked MH370 until 02:22:12 MYT, losing contact approximately 10 nautical miles north of waypoint MEKAR.
Labels: Source-linked, Low
Seven B777 flight simulator trials conducted by investigators indicated that MH370's turns after IGARI and so…
Seven B777 flight simulator trials conducted by investigators indicated that MH370's turns after IGARI and south of Penang were likely executed manually.
Labels: Source-linked, Low
MH370's crew oxygen system was replenished to 1,800 psi hours before departure, providing two pilots with app…
MH370's crew oxygen system was replenished to 1,800 psi hours before departure, providing two pilots with approximately 13 hours of oxygen endurance across two 115-cubic-foot cylinders.
Labels: Source-linked, Low
MH370's cargo manifest listed 221 kilograms of lithium batteries and approximately 4.6 tonnes of fresh mangos…
MH370's cargo manifest listed 221 kilograms of lithium batteries and approximately 4.6 tonnes of fresh mangosteens.
Labels: Source-linked, Low
The lithium batteries on MH370 were 7.4-volt radio battery packs rated at 11.1 or 11.8 watt-hours packed 24 p…
The lithium batteries on MH370 were 7.4-volt radio battery packs rated at 11.1 or 11.8 watt-hours packed 24 per shipping box.
Labels: Source-linked, Low
MH370 passenger oxygen systems were designed to deploy automatically above 13,500 feet cabin altitude and pro…
MH370 passenger oxygen systems were designed to deploy automatically above 13,500 feet cabin altitude and provide oxygen for approximately 22 minutes.
Labels: Inferred, Low
The Safety Investigation Report noted that although relevant systems were retrofitted, it could not completel…
The Safety Investigation Report noted that although relevant systems were retrofitted, it could not completely exclude an oxygen leak as a potential fire source.
Labels: Inferred, Low
FAA AD 2012-13-05 was prompted by an incident on another Boeing 777 operator where electrical heating of an o…
FAA AD 2012-13-05 was prompted by an incident on another Boeing 777 operator where electrical heating of an oxygen hose caused extensive cockpit damage near the first officer's seat.
Labels: Source-linked, Low
At an altitude of 35,000 feet, unprotected aircraft occupants have an estimated time of useful consciousness…
At an altitude of 35,000 feet, unprotected aircraft occupants have an estimated time of useful consciousness of 30 to 60 seconds.
Labels: Inferred, Low
The official record of the final voice transmission from MH370 is "Good night, Malaysian Three Seven Zero".
The official record of the final voice transmission from MH370 is "Good night, Malaysian Three Seven Zero".
Labels: Inferred, Low
The aircraft involved in MH370 was a Boeing 777-200ER with registration 9M-MRO.
The aircraft involved in MH370 was a Boeing 777-200ER with registration 9M-MRO.
Labels: Inferred, Low
Exemplar Motorola batteries tested by investigators held approximately 60% charge and survived a 48-inch drop…
Exemplar Motorola batteries tested by investigators held approximately 60% charge and survived a 48-inch drop test without functional loss or visible damage.
Labels: Inferred, Low
Maintenance logs show an initial 'nil noted' for oxygen replenishment before an engineer added oxygen solely…
Maintenance logs show an initial 'nil noted' for oxygen replenishment before an engineer added oxygen solely to the flight deck crew system.
Labels: Contested, Medium
In October 2014, MH370 family association Voice370 formally requested the full detailed cargo manifest and lo…
In October 2014, MH370 family association Voice370 formally requested the full detailed cargo manifest and load instruction sheet, which Malaysia Airlines refused to release.
Labels: Source-linked, Low
The 221 kg of lithium-ion batteries manufactured by Motorola Solutions Penang did not undergo security screen…
The 221 kg of lithium-ion batteries manufactured by Motorola Solutions Penang did not undergo security screening before loading at KLIA.
Labels: Inferred, Medium
Acting Transport Minister Hishammuddin Hussein refuted media reports alleging that the co-pilot made a teleph…
Acting Transport Minister Hishammuddin Hussein refuted media reports alleging that the co-pilot made a telephone call while flying low near Penang.
Labels: Inferred, Low
Malaysian authorities corrected the widely reported final voice transmission from MH370 in April 2014.
Malaysian authorities corrected the widely reported final voice transmission from MH370 in April 2014.
Labels: Inferred, Low
MH370 departed Kuala Lumpur International Airport shortly after midnight on 8 March 2014.
MH370 departed Kuala Lumpur International Airport shortly after midnight on 8 March 2014.
Labels: Inferred, Low
The passengers on MH370 included three children and two infants, representing 14 nationalities, with the larg…
The passengers on MH370 included three children and two infants, representing 14 nationalities, with the largest group being Chinese.
Labels: Inferred, Medium
MH370 remained airborne for more than seven hours after its diversion.
MH370 remained airborne for more than seven hours after its diversion.
Labels: Inferred, Medium
All 12 crew members of MH370 were Malaysian.
All 12 crew members of MH370 were Malaysian.
Labels: Inferred, Medium
Approximately one minute and 43 seconds after the last voice contact, MH370's transponders stopped transmitti…
Approximately one minute and 43 seconds after the last voice contact, MH370's transponders stopped transmitting and the aircraft turned back toward the Strait of Malacca.
Labels: Inferred, Low
The MH370 aircraft was delivered in 2002.
The MH370 aircraft was delivered in 2002.
Labels: Inferred, Low
The captain of MH370 was Zaharie Ahmad Shah, aged 53, with approximately 18,000 flight hours.
The captain of MH370 was Zaharie Ahmad Shah, aged 53, with approximately 18,000 flight hours.
Labels: Inferred, Medium
The ACARS data reporting system on MH370 stopped before its transponder.
The ACARS data reporting system on MH370 stopped before its transponder.
Labels: Inferred, Low
MH370 almost certainly ended in the southern Indian Ocean after fuel exhaustion.
MH370 almost certainly ended in the southern Indian Ocean after fuel exhaustion.
Labels: Inferred, Medium
Malaysian military primary radar tracked MH370 for roughly an hour as it crossed the peninsula toward the And…
Malaysian military primary radar tracked MH370 for roughly an hour as it crossed the peninsula toward the Andaman Sea until it left radar coverage.
Labels: Inferred, Low
First Officer Fariq Abdul Hamid was completing his final line-training flight before being qualified as a Boe…
First Officer Fariq Abdul Hamid was completing his final line-training flight before being qualified as a Boeing 777 first officer.
Labels: Inferred, Medium
Investigators analyzed MH370's satellite communications records after initial searches of the Bay of Bengal a…
Investigators analyzed MH370's satellite communications records after initial searches of the Bay of Bengal and Andaman Sea.
Labels: Inferred, Low
The satellite data unit (SDU) on MH370 re-logged on to the Inmarsat network at about 02:25 MYT, consistent wi…
The satellite data unit (SDU) on MH370 re-logged on to the Inmarsat network at about 02:25 MYT, consistent with a power interruption and restoration.
Labels: Inferred, Low
Captain Zaharie Ahmad Shah and First Officer Fariq Abdul Hamid had not previously flown together after Fariq’…
Captain Zaharie Ahmad Shah and First Officer Fariq Abdul Hamid had not previously flown together after Fariq’s upgrade training.
Labels: Inferred, Medium
Physical debris confirms that the MH370 aircraft was destroyed.
Physical debris confirms that the MH370 aircraft was destroyed.
Labels: Inferred, Medium
A ground station in Perth sent automatic hourly status requests ("handshakes") to MH370.
A ground station in Perth sent automatic hourly status requests ("handshakes") to MH370.
Labels: Inferred, Low
The main wreckage, flight recorders, and human remains of MH370 have not been recovered.
The main wreckage, flight recorders, and human remains of MH370 have not been recovered.
Labels: Inferred, Medium
The SDU re-logon event on MH370 is a fact that drives much of the "deliberate action" analysis regarding the…
The SDU re-logon event on MH370 is a fact that drives much of the "deliberate action" analysis regarding the flight's disappearance.
Labels: Inferred, Low
A 2025–2026 Ocean Infinity search for MH370 covered approximately 7,571 square kilometres without finding con…
A 2025–2026 Ocean Infinity search for MH370 covered approximately 7,571 square kilometres without finding confirmed wreckage.
Labels: Inferred, Low
A new underwater search for MH370 by Ocean Infinity was approved by Malaysia's cabinet in December 2024 and r…
A new underwater search for MH370 by Ocean Infinity was approved by Malaysia's cabinet in December 2024 and resumed in early 2025.
Labels: Source-linked, Low
Investigators derived the distance between MH370 and the satellite at hourly intervals using automatic hourly…
Investigators derived the distance between MH370 and the satellite at hourly intervals using automatic hourly status requests from a Perth ground station.
Labels: Inferred, Low
The "7th arc" of likely positions for MH370 was derived from burst timing offset (BTO) and burst frequency of…
The "7th arc" of likely positions for MH370 was derived from burst timing offset (BTO) and burst frequency offset (BFO) values on Inmarsat satellite 3-F1.
Labels: Inferred, Low
Malaysia extended its agreement with Ocean Infinity for the search of MH370 from July 1, 2026, to June 30, 20…
Malaysia extended its agreement with Ocean Infinity for the search of MH370 from July 1, 2026, to June 30, 2027.
Labels: Inferred, Low
The search for MH370 remains authorized but unresolved as of October 1, 2026.
The search for MH370 remains authorized but unresolved as of October 1, 2026.
Labels: Inferred, Low