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MRTA
3 Multi-role turret.
4 Miniature receive terminal.
5 Maintenance release tag.
6 Mountain rescue team.
7 Multi-radar tracker, or tracking.
8 Multiple remote terminal.
MRTA Medium-range tactical aircraft.
MRTD 1 Minimum-resolvable temperature [rarely, time]
difference.
2 Machine-readable travel document[s].
MRTF Mean rounds to failure (gun).
MRTFB Major range and test-facility base (USAF).
MRTM Maritime.
MRTS Microwave repeater test set.
MRTT 1 Multi-role tanker/transport.
2 Multi-role towed target.
MRTU Multiple remote terminal unit.
MRU 1 Mountain rescue unit.
2 Mobile radio, or radar, or reporting, unit.
3 Mach repeater unit.
4 Mobile receiver unit (UAV).
5 Maintenance recorder, or recording, unit.
6 Medical Rehabilitation Unit (RAF, Headley Court).
MRUASTAS Medium-range unmanned aerial surveillance
and target acquisition system.
MRV 1 Multiple re-entry vehicles.
2 Machine-readable visa.
MRW Maximum ramp weight.
MRWS Manned remote work-station (for space-station
construction).
MS 1 Minus (ICAO).
2 Military standard (US).
3 Mild steel.
4 Maintenance schedule.
5 Medium supercharge[d].
6 Mossbauer spectrometer.
7 Margin of safety.
M s Minus.
ms Millisecond = 10 -3 s.
m/s Metres per second.
MSA 1 Mission system(s) avionics.
2 Monolithic stretched acrylic.
3 Minimum sector altitude.
4 Minimum safe, or separation, or sector, altitude.
5 Maritime Safety Agency(J).
MSAB Multinational security accreditation board
[overdue] (NATO).
MSAD Multisatellite attitude determination.
MSAFQ Minimum speed for acceptable flying qualities.
MSAM Mobile (or, UK, medium) surface-to-air missile.
MSAR Miniature synthetic-aperture radar.
MSAS 1 MTSAT satellite-based augmentation system.
2 Multifunction satellite augmentation system.
MSAT Multi-sensor aided targeting [-Air adds airborne].
MSAW Minimum safe altitude warning; S adds system.
MSB 1 Most significant bit (EDP [1]).
2 Mandatory service bulletin.
3 Master systems bench.
MSBS Mer/sol balistique stratégique; submarine-based
strategic missile (F).
MSC 1 Manned Spacecraft Center [now Lyndon B
Johnson Spaceflight Center, Houston, TX 77058] (NASA).
2 Major subordinate command (NATO).
3 Manpower Services Commission (UK).
4 Military Sealift Command (US).
5 Multi-scan correlation.
6 Master server computer.
7 Microspark coating.
8 Military Satellite Communications [JPO adds Joint
Program Office] [DoD/USAF] (US).
MSCADC Miniature standard CADC.
MSCP Mean spherical candlepower (non-SI).
MSD 1 Mass storage device.
2 Minimum separation distance.
3 Multisensor display.
4 Multimode silent digital (radar).
5 Most significant digit.
6 Multiple-site damage [airframe].
7 Mid-span damper.
8 Map storage display.
9 Mean square deviation.
MSDB Mission-system databus.
MSDF Manual spinning directon finding.
MSDPS Military survey digital production system.
MSDS 1 Mode-selector damping service.
2 Material safety data sheet (OSHA).
MSE 1 Minimum single-engine speed.
2 Manned spacecraft engineer.
3 Mean square error (signal processing).
4 Mission support element.
msec Millisecond.
MSER Multiple stores ejector rack.
MSET Multi-sensor exploitations testbed.
MSF
1 Militarily significant fallout.
MSIP
2 Multi-sensor fusion.
3 Mission support facility.
4 Mobile strike force.
MSFC George C Marshall Space Flight Center
[Huntsville, Alabama 35821] (NASA).
MSFL Minimum safe flight level.
MSFN Manned Space Flight Network (NASA).
MSFP Mosaic-staring focal plane (early-warning
sensors).
MSFSG Manned spaceflight support group (USAF).
MSFU Merchant ship fighter unit (WW2).
MSG 1 Maintenance steering group [inter-airline; suffix
number denotes edition, currently 3] (Int.).
2 Message (ICAO).
3 Microgravity science glovebox, for space experiments.
MSH 1 Metastable helium.
2 Medium support helicopter; ATF adds aircrew
training facility [RAF Benson] (UK).
MSHE Multispectral hostile environment.
MSI 1 Medium-scale integration.
2 Moon’s sphere of influence (NASA).
3 Mission-systems integration.
4 Multi-source integration or integrator.
5 Mission, or missile, store interface.
6 Multi-sensor integration.
MSIAC Modeling and Simulation Information Analysis
Center (DoD).
MSIC Multi-ship integrated control.
MSIM Museum of Science and Industry in Manchester
[M3 4FP] (UK).
MSIP 1 Multinational [or multi-] staged improvement
program.
2 Multispectral imagery processor.
3 Multi-sensor integrated payload.
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