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Proximity Sensor System Experience

DC-9 Series 10 Through 50 Retrofit

Goodrich Fuel and Utility Systems designed a Proximity Sensing System for retrofit on the Northwest Airlines DC-9 Series 10 through 50 aircraft. The redesigned system solved reliability problems caused by the original microswitches and proximity sensors. Goodrich provided a complete package to Northwest and obtained an Supplemental Type Certificate (STC) by working with the FAA. Goodrich has also supplied the proximity sensing systems to Air Canada and FinnAir to retrofit their DC-9 aircraft.


We supplied the following to Northwest Airlines:

  • Complete Retrofit Kit
    • Proximity Sensing Electronics Unit (PSEU)
    • Rectangular, all-metal Proximity Sensors
    • Landing Gear Harnesses
    • Mechanical Hardware Including Targets and Brackets
  • Complete Overhaul and Installation Documentation Package

For more information about Goodrich Proximity Sensing Systems please contact us.

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