Resources

The 7th arc

00:19:29 UTC aircraft-initiated log-on

BTO range ring at the last transmission. Official and Ocean Infinity boxes are arguments about a segment of this arc plus a stand-off. It is not a crash pin.

7th arc (schematic locus)

00:19 UTC range ring from Inmarsat I-3

Search geometry, not a wreck coordinate. Official and Ocean Infinity boxes are arguments about a segment of this arc.

Surface search begins in the South China Sea

8 March 2014

Ships and aircraft search the Gulf of Thailand / South China Sea along the filed route — the wrong ocean for several days.

The Search for MH370 is Back ON!

Mentour Now · 24 March 2025 · 23:19

Follow-up on Malaysia’s 2025 Ocean Infinity restart. Recaps BTO as range and BFO as Doppler, the southern-arc choice, and overlays Godfrey’s WSPR figure-eights on a line through the captain’s simulator coordinates.

Fuel exhaustion, then uncontrolled descent at the 7th arc

Prevailing official end-of-flight model

After a long southern cruise the aircraft flames out near 00:19 UTC, the SDU logs on from APU/emergency power, and the aeroplane leaves controlled flight. Wreckage should lie on or near the 7th arc.

ATSB underwater search box 2014–2017

~120,000 km² · suspended 17 January 2017

High-resolution seabed search along a refined 7th-arc corridor. No wreckage.

Official underwater search suspended

17 January 2017

Australia, Malaysia and China suspend the ATSB-led search after 120,000 km² of seabed have been covered with no wreckage.

USS Kidd (DDG 100) joins the surface search

Also diverted from South China Sea training

Confirmed later in the search: Kidd and Pinckney had both been training in the South China Sea. Kidd took the southwestern Gulf of Thailand sector; Pinckney the northeast. Pre-search tracks remain unpublished.

Wikipedia — search for MH370

South China Sea to Ocean Infinity 2027

Most expensive aviation search. Surface 4.5 million km² in 2014; ATSB 120,000 km² underwater; Ocean Infinity 112,000 km² in 2018 and a 15,000 km² 2025–27 box. No main wreckage.

A BIG SAFARI collection architecture around MH370

The family is documented. A specific 8 March operation is open.

Gorgon Stare, Blue Devil and MAGIC/Orion are one overlapping ISR family under 645 AESG / BIG SAFARI: same office, overlapping WAMI/SIGINT sensors, reusable GFE through Greenville, and a podded architecture meant to move between airframes. That family is confirmed. Whether any of it collected MH370 is not established and is not ruled out.

The Operational Search for MH370

ATSB AE-2014-054 · final search report 2017

Australia’s account of how the southern Indian Ocean search box was drawn, refined, and exhausted over 120,000 km². Primary technical home of the 7th-arc argument used in the field.

RMAF notifies KL ARCC of the western military track

22:30 MYT 8 March 2014 · ~12 hours after the minister

SAR chronology: civilian rescue centre informed of the possible turn-back / western last-known at 22:30 Malaysian time. Ministerial awareness ~10:30. The gap is a documented information-latency issue, not by itself a finding of a cover-up.

USS Pinckney (DDG 91) diverted from South China Sea training to search

7th Fleet · 8 March 2014 · two MH-60R embarked

Confirmed. Pinckney was already at sea in the South China Sea on a training and maritime-security task, then ordered toward Vietnam’s southern coast after MH370 was missing. Helicopters flew search sorties from 9 March. Pre-search combat-system logs are not public.

Diego Garcia

British Indian Ocean Territory · collection-geography question

US/UK atoll. CTBTO HA08 North hydrophones went dark in March 2014 after a deep-ocean cable break. UCT-2 was on the island that month on near-shore HDAS cables. Neither fact is a finding that MH370 was collected or hidden here.

Ocean Infinity 2018 corridor

~112,000 km² along a revised arc

No-find-no-fee AUV search from Seabed Constructor. No wreckage.

What can be documented at Diego Garcia on 7–8 March 2014?

HA08 North’s trunk failed in March 2014 about 189 km off Diego Garcia; UCT-2 was on the atoll doing near-shore HDAS anode work in 110 ft of water. Sensor, SIGINT, satellite-downlink and aircraft records for 7–8 March are still the question — not a finding.

Australia leads the southern search

March 2014 onward

The Joint Agency Coordination Centre coordinates a vast surface search, then an underwater search, in the southern Indian Ocean.

Ocean Infinity 2025–27 priority box

15,000 km² · 7,571 surveyed · 7,429 remaining

New no-find-no-fee area along the 7th arc. Empty as of the 8 March 2026 family update. Contract to 30 June 2027.

Kadena P-3C tasked to the MH370 search

Announced 8 March 2014 · on station 9 March

Confirmed search tasking. Seventh Fleet said a P-3C would leave Kadena Air Base, Okinawa, shortly on 8 March. Naval Today: the P-3 arrived on station the afternoon of 9 March. VP-16 P-8A Poseidon had been in theatre from December 2013 — basing, not a 7–9 March sortie card.

UCT-2 inspected near-shore HDAS cables at Diego Garcia

February–early March 2014 · 110 ft of water · zinc anodes

Confirmed Seabee deployment. Construction Diving Detachment Charlie spent February and early March at NSF Diego Garcia on fleet moorings and Hydro-acoustic Data Acquisition System cables. Final task: inspect and repair two HDAS cables north of the lagoon in about 110 feet of seawater. That is not the 189 km / 1.5 km-deep HA08 North trunk.

Ocean Infinity 2018 no-find-no-fee search

January–May 2018

Ocean Infinity’s Seabed Constructor searches on the order of 112,000 km² along a revised 7th-arc corridor. No wreckage.

Bathymetry and underwater search begin

October 2014

Fugro vessels and partners begin wide-area bathymetric mapping and towed-sonar search of a defined 7th-arc corridor.

MH370 search operation 2025/2026 — update to families

Ministry of Transport Malaysia · 8 March 2026

Official family briefing: 28 operational days, ~7,571 km² of the 15,000 km² box surveyed, no wreckage confirmed. Contract later extended to June 2027.

Ocean Infinity proposes a new search

May–December 2024

Ocean Infinity submits a fresh no-find-no-fee proposal. In December 2024 Malaysia approves in principle a 15,000 km² search worth up to US$70 million if wreckage is found.

CTBTO HA08 North at Diego Garcia went dark in March 2014

Cable break ~189 km offshore · South array kept listening

Confirmed by CTBTO. The northern hydroacoustic segment of HA08, off Diego Garcia, suffered a trunk-cable fault in March 2014 about 189–190 km from shore, more than a kilometre and a half down. HA08 South continued. North stayed silent for twelve years. A conventional splash in the southern Indian Ocean is not thereby erased — Cape Leeuwin (HA01) and HA08 South remained in the network.

Handshake 6 — last successful hourly ping

00:10:58 UTC 8 March

The last completed ground-initiated handshake. Eight minutes later the aircraft sends a log-on associated with fuel exhaustion.

Inside the Investigation: The Search for MH370 Truth

7NEWS · Peter Foley, Joe Hattley

Former lead search officials on internal protocol, sonar-mapping mistakes, and why a debris field can still be found. An Australian operational view, not a cockpit narrative.

Michael Selig testimony — Diego Garcia, Gorgon Stare, cold plasma

Nic Moneypenny notes a written and recorded account by Michael Selig, former fast-jet pilot who flew into Diego Garcia, describing an MH370 end-state, a leaked video, Gorgon Stare and scalar / plasma language.

Controlled descent / ditching

Someone still flying at the end

A pilot or system flies a glide after flame-out, so the wreck lies tens of kilometres from the 7th arc. Flaperon damage is read by some independent engineers as consistent with a ditching sequence.

Gorgon Stare’s podded architecture was designed for more than MQ-9

HASC 113-102: open/podded architecture permitted integration on multiple aircraft types. Aviation Week 2010 named it as a potential MAGIC payload. An Orion installation by 8 March 2014 is not shown.

US military presence in theatre, 7–9 March 2014

Public-source board · confirmed search assets vs records still needed

Working chart of publicly documented US assets around MH370: USS Pinckney already in the South China Sea and diverted to search on 8 March; a Kadena P-3C announced the same day; USS Kidd joined. Guam RQ-4, Diego Garcia sensors, EP-3E, RC-135 and exact 7–9 March sortie lists remain open. Presence is not the same as tracking 9M-MRO.

MAGIC was designed for multi-INT payload modularity, not only endurance

OSD PB2012 lists EO/IR, SIGINT, GMTI, wide-area surveillance, communications relay and strike as modular payload classes, plus reduced-manning / open-architecture avionics. That is the documented architecture. It is not an installed-GFE list for March 2014.

Malaysia extends the search contract to June 2027

29 June 2026

Cabinet extends the Ocean Infinity agreement from 1 July 2026 to 30 June 2027 to finish a remaining 7,428.54 km². No-find-no-fee terms continue.

Ocean Infinity

Private seabed search · 2018 and 2025–2027

No-find-no-fee searches along the 7th arc. 2018 ~112,000 km². 2025–26: 7,571 km² of a 15,000 km² box. Contract extended to 30 June 2027.

West-track disclosure lag — ministerial 10:30, ARCC 22:30, Thai 9–10 days

8 March and 18–19 March 2014

Hishammuddin 1 May 2014: military radar playback ~08:30 MYT 8 March, Air Force ops ~09:00, minister informed ~10:30 of a possible turn-back; a military aircraft west at 10:54. KL ARCC was not informed by RMAF of the western last-known until 22:30 MYT — a roughly 12-hour operational gap. Thai Surat Thani radar disclosed 18–19 March.

Capt. Patrick Blelly & Jean-Luc Marchand

Independent trajectory paper

End-of-flight reconstruction used by Mentour: flame-out, APU, cross-feed, possible glide. Argues the last BFO need not be a wreck on the 7th arc.

Gulf of Thailand / South China Sea search

Wrong-ocean SAR · 8–14 March 2014

Where the aircraft was last seen on civil radar — and where it no longer was.

2025–2026 Ocean Infinity phases

25–28 March 2025 and 31 Dec 2025 – 23 Jan 2026

Two operational phases survey about 7,571 km² of a 15,000 km² priority box. Malaysia’s 8 March 2026 family update: nothing found that confirms the wreckage.

Australian Transport Safety Bureau

Lead of the 2014–2017 southern Indian Ocean search

Drew and exhausted the 120,000 km² underwater box. Operational-search report is the engineering baseline for later Ocean Infinity boxes.

Blelly & Marchand: last log-on is not necessarily a straight dive

Independent paper used by Mentour: right-engine flame-out, APU start, cross-feed, possible eastward or gliding end. BFO steep-descent figures can be read as a manoeuvre, not only as a wreck on the arc.

Joint Agency Coordination Centre

Australia · southern Indian Ocean search coordination

Stood up to run the multinational southern search after the SATCOM pivot.

Malaysia announces the southern Indian Ocean track

15 March 2014

Prime Minister Najib Razak states that new satellite data show MH370 flew for hours into the southern Indian Ocean. The search pivots.

Flight MH370 Vanished 10 Years Ago. What’s Happened Since?

CNA Insider · Insight · 8 March 2024 · 47:24

Tenth-anniversary Singapore broadcast: Inmarsat handshake rings, the 120,000 km² ATSB box, family pressure, and the state of independent debris work. Does not adopt a cockpit perpetrator.

Southern Indian Ocean

Search theatre after 15 March 2014

The ocean in which official and private underwater campaigns have been conducted.

What sensors were actually on Orion by March 2014?

Orion was selected as MAGIC’s multi-day, multi-sensor ISR aircraft. First flight had no mission system; flight 18 (Dec 2014) carried ballast. Those two points do not empty the aircraft. Sorties 2–17, including March 2014, are the hole. Gorgon Stare / MTS-B / VADER remain live leads, not closed fits.

Wikipedia timeline — night of 7–8 March 2014

Duty sign-in through failed 09:15 handshake

Compiled public chronology: captain sign-in 22:50 MYT 7 March, F/O 23:15, SDU log-on 00:00, push 00:27, takeoff 00:42, FL350 01:01, last ACARS 01:07, last voice 01:19:30, transponder 01:21:13, Penang cell 01:52, last radar 02:22, SDU log-on 02:25, hourly pings, last transmission 08:19:37, no reply 09:15.

Handshake 7 — aircraft-initiated log-on

00:19:29 UTC · probable fuel exhaustion

The SDU sends a log-on request, then a log-on acknowledge eight seconds later. The investigation treats this as power-up after dual engine flame-out.

Oliver Plunkett

Ocean Infinity leadership (2026 search close-out statements)

Publicly closed the January 2026 phase: nothing found in the surveyed box; commitment to return if circumstances allow.

Source archive index

18 September 2026 · source register

Index of the important sources in the ISR investigation, with a status for each: full text, targeted extract, archived copy, snapshot, lead only, or still to be upgraded.

Was Gorgon Stare Increment 2 operational on 8 March 2014?

Sierra Nevada (1 Jul 2014): deployed to Afghanistan ‘earlier this year’ and at IOC. Air & Space Forces (7 Apr 2014): Col Brandon Baker — second iteration ‘has been tried operationally’ and would undergo a six-month evaluation. Mercury SEC: 18-month QRC delivery from a 2011 win. None of these pin 7–8 March.

What was on Orion flights 2–17 between August 2013 and March 2014?

First flight: no mission system. Flight 18 (Dec 2014): ballast. The MH370-relevant interval is the unlisted sorties in between, plus whether the ‘second flight series’ PB2015 said was being scheduled had begun by 8 March.

Where was the Blue Devil I government-owned sensor package in January–March 2014?

Aircraft gone; sensors remaining as government property, being assessed for reassignment. Destination on 8 March is open — including Orion, MQ-9, MC-12, or another host. Not shown, and not ruled out.

Anthony Loke

Malaysian Minister of Transport (2025–2026 search rounds)

Announced the 2025 Ocean Infinity restart and the 29 June 2026 extension to 30 June 2027.

Boeing–NAVAIR delivery order signed 4 March 2014

$955,853.54 · N0001914D0012 · engineering/technical support · St Louis

Confirmed public contracting record, four days before MH370. Department of the Navy, Naval Air Systems Command, NAICS aircraft manufacturing, PSC R425 professional engineering/technical support. Subject of the order is not in the public header. Chronology is not a collection event.

MH370 / US Military ISR Working Research Report v1

Working paper · 18 September 2026

Working paper on US military ISR programmes in the MH370 window: MAGIC, Orion, Gorgon Stare, Blue Devil and remote-control patents, read as one overlapping family under BIG SAFARI. The family is documented. A specific MH370 collection is not established and is not ruled out.

MH370 Research Master Log

Investigation chronology · 18–20 September 2026

Running chronology of findings: cargo, 2011–2013 ISR programmes, radar disclosure on the westbound track, MAGIC budget exhibits, and the alleged-video file.

New Evidence, New Answers? The Endless Search For Flight MH370

Independent overview of debris and Ocean Infinity

Survey of African-coast debris identifications and whether a marine-robotics return can close the case. No new wreckage coordinate.

New search for Malaysia Airlines Flight 370 underway

CBC News: The National · 31 December 2025 · 2:19

Canadian network report on Ocean Infinity Phase 2 putting to sea. Matches MOT dates: 31 December 2025 to 23 January 2026.

The radar story and the 9 March cyberattack

Working chart · tracks, delays, and a spear-phish of the investigation

Two panels. Left: civilian secondary, Malaysian military primary, Thai paint disclosed ten days later, and the 12-hour lag before the civilian rescue centre was told. Right: one day after the loss, officials on the investigation were hit with a spear-phish that CyberSecurity Malaysia later said stole classified material toward an IP in China. Presence of a hack is confirmed as that agency’s public account. What was in the take — and whether it included radar — is still open.

The Search for MH370 — Journal of Navigation

Ashton, Dickinson, Hall, Roberts, Smith · Inmarsat · 2014/15

The paper that showed how BTO and BFO from routine signalling units can reconstruct a long flight the airline did not know it still had.