The Whelen 01-0771424-10 is a 14V PAR-36 LED landing light designed as a direct drop-in replacement for legacy incandescent and halogen sealed-beam aircraft landing lights. It is part of Whelen’s original Parmetheus LED series and is widely used in general aviation aircraft for upgrading older lighting systems without modifying the existing housing.

This model provides focused forward illumination for landing and takeoff operations while significantly reducing power consumption and improving service life compared to traditional PAR-36 bulbs. It has since been superseded by newer Parmetheus Plus and G3 series variants, which offer higher brightness and efficiency.

Its primary features include:
14V DC LED aircraft landing light
PAR-36 form factor (drop-in sealed-beam replacement)
Direct replacement for legacy halogen landing lamps
Reduced electrical load with improved efficiency
High-intensity forward beam for runway illumination
FAA-PMA certified aviation lighting component
Vibration-resistant sealed LED construction
Compatible with standard PAR-36 aircraft lighting housings

This light is part of the earlier generation of Whelen LED landing solutions and is commonly referenced as the baseline model for upgrades to newer systems like the Parmetheus Plus 01-0771833-10 series.