L&D: Landing and Deceleration
L&L: Launch and Landing
L&LS: Launch and Landing Site
La: launch area
LA: launch azimuth
LACB: Landing Aids Control Building
LACE: Low Power Atmospheric Compensation Experiment
LAGEOS: Laser Geodynamic Satellite
LAGEOS: Laser Geodynamics Satellite
LAGS: Launch Abort Guide Simulation
LAIRT: Large-Aperture Infrared Telescope
LAIU: Launch Abort Interface Unit
LAM: Low-Altitude Mission
LAMMR: Large-Antenna Multichannel Microwave Radiometer
LAMP: Lyman-Alpha Mapping Project
LAPSS: Large-Area Pulse Solar Simulator
LaRC: Langley Research Center
LASCO: Large Angle Spectrometric Coronograph
LASS: Large-Amplitude Space Simulator
LawOB: Laws Observatory Bulletin
LBLRR: LBL Research Review
LBTP: Launch Base Test Plan
LBTPP: Launch Base Test Plan/Procedure
LC: Launch Complex
LC: Launch Cost
LC: launch countdown
LC&CO: Launch Control and Checkout
LCA: Launch Control Amplifier
LCC: Launch Commit Criteria
LCC: Launch Control Center
LCC: Launch Control Complex
LCCD: Launch Commit Criteria Document
LCE: Launch Complex Engineer
LCE: Launch Complex Equipment
LCMS: Low-Cost Modular Spacecraft
LCROSS: Lunar CRater Observation and Sensing Satellite
LCS: Launch Control System
LDEC: Lunar Docking Events Controller
LDIU: Launch Data Interface Unit
LDR: Low Data Rate