Resources

Inmarsat

Classic Aero I-3 · Perth Ground Earth Station

The communications company that became the principal witness to MH370’s last six hours.

Inmarsat signalling-unit log for 9M-MRO

Perth Ground Earth Station · 7–8 March 2014

The table of channel, BTO, BFO and message type that underpins every arc on every search map. Released by Malaysia with Inmarsat notes.

Inmarsat signalling-unit logs for 9M-MRO

Perth Ground Earth Station · 7–8 March 2014

The raw-ish tables of channel, BTO, BFO and message type that underpin every arc on every search map. Released by Malaysia with Inmarsat explanatory notes.

Could the Inmarsat BFO have been spoofed?

Wise’s northern path stands or falls on this. Inmarsat and ATSB treat BFO as a physical Doppler residual. No public demonstration has shown a 2014-era 777 SDU emitting a false BFO while keeping a consistent BTO.

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.

Satellite data unit logs back on

18:25:27 UTC · Handshake 1

Three minutes after the last radar paint, the aircraft SDU sends a log-on request to Inmarsat. Investigators treat this as a power restoration to the SATCOM avionics.

A NEW Trace! The FULL MH370 Story, so Far

Mentour Pilot · Petter Hörnfeldt · 16 March 2024 · 56:06

Type-rated 737 captain’s reconstruction from the 2018 report, Inmarsat BTO/BFO, and the Blelly–Marchand end-of-flight paper. Argues the transponder was selected off in two steps, not failed as a unit. Closes with a WSPR lead and a request to restart the search.

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.

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.

BTO range rings and BFO Doppler residuals

Inmarsat / Ashton et al. · Journal of Navigation

Burst Timing Offset describes distance from the satellite (an arc on the Earth). Burst Frequency Offset encodes relative motion and is why official analysis went south, not north.

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.

Forensic evidence board — facts, capabilities, missing dossiers

Working chart of intersections · ten target records still outstanding

Cork-board reconstruction: Malaysian military radar and MH370 data on one side; QF-16 2013, UAV/UAS patents, JORN, Kadena P-8A/P-3C, Inmarsat SATCOM and Boeing range models on the other. The bottom row is the live request list — Boeing’s 4 March statement of work, sortie logs, Global Hawk, Pinckney/Kidd tracks, JORN tasking, SBIRS, Five Eyes correspondence, 9M-MRO avionics configuration.

Handshake 2

19:41:00 UTC

Ground-initiated hourly handshake. The aircraft remains a live Inmarsat terminal, southbound on the Indian Ocean corridor in later reconstructions.

Is Flight 370 still sending signals?

CNN · 13 March 2014 · 2:09

Week-one report, before the 15 March Inmarsat southern-arc briefing. Captures the live confusion over whether the aircraft was still electrically alive.

Wikipedia — Malaysia Airlines Flight 370

en.wikipedia.org · living page · read 18 September 2026

Crowd-maintained digest of the public case: 239 dead, 9M-MRO, 8 March 2014, KUL–PEK, cause undetermined. Useful as a citation map into ATSB, MOT, Inmarsat and Ocean Infinity. Not a primary source.

Malaysia Airlines

Operator of MH370 / 9M-MRO

Declared the flight missing at 23:24 UTC while the SDU was still a live Inmarsat terminal.

MH370 Disappearance: Minute by Minute

Licensed 53-minute feature · 2025–26 reprints

The same ~53:13 timeline film appears under DocuReal, Spark, Wonder, Real Stories and Progress with new title cards. Content is the public night: 00:41 takeoff, 01:19 sign-off, Malacca radar, Inmarsat, African debris.

Najib Razak

Prime Minister of Malaysia, 2014

On 24 March 2014 announced that MH370 ended in the southern Indian Ocean with no survivors, based on Inmarsat’s then-new analysis.

Northern corridor

Inconsistent with BFO sign and with African debris

Early public maps showed a northern Inmarsat ring. BFO and later debris on western Indian Ocean coasts disfavour it.

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.

DSTG Bayesian flight-path analysis

Defence Science and Technology Group, Australia

A probabilistic reconstruction of MH370’s path from SATCOM metadata. Output is a distribution along the 7th arc, not a pin in the map.

Failed handshake — terminal silent

01:15:56 UTC

The ground station interrogates 9M-MRO and receives no response. The aircraft is no longer a live terminal.

Jeff Wise: northern hijack to Kazakhstan, BFO spoofed

2015 New York Magazine thesis, restated in Netflix episode 2 and in Finding MH370 “Landing MH370.” Keep BTO, discard or spoof BFO, fly borders, land on a long Central Asian runway. Requires the African debris field to be explained away.

Landing MH370

Jeff Wise · Finding MH370 S1E27 · 28 November 2024 · 45:12

The northern-landing telling: discard or spoof BFO, keep BTO, fly borders, land at a long Central Asian runway (Wise’s 2015 candidate was Yubileyniy / Baikonur). Requires the African debris field to be explained away.

Last primary radar contact

18:22:12 UTC

The final military primary-radar return is recorded northwest of Malaysia, over the Andaman Sea approaches. After this, only the satellite terminal speaks.

Malaysia Airlines declares the flight missing

23:24 UTC

The airline issues a public statement that MH370 is missing, hours after radio and radar contact were lost and while the aircraft is still exchanging satellite handshakes.

MH370: The Plane That Disappeared

Netflix · three episodes · March 2023

Louise Malkinson’s three-part series gives one episode to each of three tellings: the pilot, a Russian hijack (Jeff Wise), and a US intercept (Florence de Changy). Families and Malaysia Airlines crisis staff are interviewed. It is a survey of hypotheses, not a finding.

MH370: The Untold Story / The Cover-Up

Peter Stefanovic · Sky News 2020 · later Amazon two-part

Interviews with Tony Abbott, Warren Truss and Sir Angus Houston on the first hours, plus Capt. Byron Bailey’s claim that the aircraft was hidden on purpose. Radar-sharing delay is documented; “hidden” is Bailey’s inference.

Project Quiet Exodus — Part 1

SecretMilitaryTechnology.com thesis · asset denial of the Freescale team

A long-form thesis that MH370 was a US operation to stop twenty Freescale employees reaching China, protecting a compact-fusion / spacetime platform. Public facts inside it (headcount, Carlyle, Lockheed CFR patents, HA08 outage, UCT-2 at Diego Garcia) are filed separately. The operation itself is not established.

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.

Why did SAR start in the wrong ocean for days?

Military primary radar and live SATCOM existed while the public search flew the South China Sea. Minister ~10:30 MYT; KL ARCC 22:30; Thai Surat Thani 18–19 March. GADSS is the policy answer; the night-of organisational failure is still a research subject.

Why Planes Vanish: The Mystery of Flight MH370

BBC · tenth-anniversary feature · WSPR

BBC anniversary piece that brought Weak Signal Propagation Reporter analysis to a general audience. Richard Godfrey’s method is not peer-reviewed; the data are not an open, reproducible track.

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.

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.