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Communications were more likely switched off or unpowered than randomly failed

ACARS, transponder and VHF drop together near IGARI. The report favours manual off / power interrupt, without proving intent.

Last ACARS transmission

17:07:29 UTC

The final Aircraft Communications Addressing and Reporting System message leaves 9M-MRO. Expected reports at 17:37 and 18:07 never arrive.

MAGIC

Medium Altitude Global ISR and Communications

USAF endurance-ISR programme. Air vehicle: Aurora Orion. Office: 645 AESG / BIG SAFARI — the same rapid-acquisition group that ran Gorgon Stare and took Blue Devil residuals. Confirmed as a multi-day ISR platform in that family. A specific MH370 operation is not established and is not ruled out.

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.

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.

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.

Last voice contact

17:19:30 UTC · “Good night Malaysian three seven zero”

Lumpur Radar transfers MH370 to Ho Chi Minh. The reply — attributed to the captain — is the last recorded voice transmission from the flight.

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.

Raytheon Space and Airborne Systems

ISIS radar · MTS for USAF UAVs · large classified SAS bookings

Radar on ISIS; MTS-B is an Orion payload lead. 2013 SAS booked $210m MTS for USAF UAVs and $862m classified. Those totals do not establish an MH370/MAGIC contract.

Safety Investigation Report — MH370

Malaysian ICAO Annex 13 Team · 30 July 2018

The official accident report. Cause undetermined. Diversion likely from manual inputs; third-party intervention not excluded; 00:19 log-on treated as fuel exhaustion. No wreckage, no recorders.

Secondary radar lost

17:21:13 UTC

Mode S transponder returns cease. Primary (military) radar continues to paint an unidentified westbound track consistent with MH370.

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.

Transponder dropped in two steps, not as a single failure

Mentour Pilot and others: Mode S / TA-RA selected off seconds after IGARI; the remaining secondary-radar symbol gone ~37 seconds later; then the left turn. A total electrical failure would have blanked every emitter at once.

Turn back across the Malay Peninsula

17:21–17:52 UTC

Primary radar shows a left turn off the Beijing airway, a crossing of Malaysia, and a track toward the Andaman Sea. The official report calls this diversion likely the result of manual inputs.

What were the two MAGIC JUON numbers and the FY2012/13 add sponsors?

USAF says two Joint Urgent Operational Needs for long dwell / persistent ISR. Exact numbers, submitting commands, and the $19m / $50m Congressional language are unresolved.

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.

Boeing files uninterruptible-autopilot priority

19 February 2003 · later US7142971B2

Patent architecture: remote or automatic engagement; onboard controls may be disconnected; dedicated communications; inaccessible power path. Precedent, not an MH370 installation.

Boeing US7142971B2 — uninterruptible automatic control

Remote engagement · disconnected onboard controls

Confirmed patent disclosure. Claims include remote initiation, dedicated comms distinct from other aircraft communications, disabled onboard override, and automatic landing at a predetermined (including military) site.

Business Case Analysis of MAGIC UAV System

Naval Postgraduate School thesis · public PDF

Academic model of MAGIC as long-range ISR, not a named communications-relay payload. The $510m RDT&E figure in the thesis is an academic model, not an official acquisition estimate.

Cubic US6641087B1 — anti-hijack remote pilot

Commercial retrofit · satellite relay · cockpit exclusion

Confirmed patent. Activation onboard or by remote override; deactivate normal pilot control; uplink airspeed/altitude/fuel; optional disable of ordinary communications; CVR/FDR upload. USPTO: 4-year fee 4 May 2007, 8-year fee 4 May 2011, expired 4 Nov 2015 for later non-payment. In force on 8 March 2014. No installation evidence in this archive.

Freescale as a causal thread

Twenty employees confirmed; assignment unreconstructed

Presence is a fact. A defence, inertial, or communications assignment that would matter to MH370 is an open question, not a finding.

Inmarsat

Classic Aero I-3 · Perth Ground Earth Station

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

L-3 Greenville awarded Blue Devil 2 integration / test

FA8620-06-G-4003 / order 1157 · $12.054m · 17 Aug 2011

L-3 Communications Integrated Systems, Greenville, Texas, paid for BD2 airship integration and test support. Later Q4 FY2012 storage was also at a 645 AESG-managed Greenville facility. Geographic coincidence is not a custody finding.

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.

OSD PB2012 — MAGIC JCTD primary record

PE 0603648D8Z · pp. 32–33 · USCENTCOM sponsor

Primary OSD budget exhibit: MAGIC is a USCENTCOM-sponsored JCTD. 120-hour sortie, nominal 1,000 lb / maximum 2,600 lb at 15,000 ft. Modular payload classes: EO/IR, SIGINT, GMTI, wide-area surveillance, communications relay, strike. Transition named to USAF 303rd AESW.